Add automatic type detection for Embedded. (#8724)

* Add automatic type detection for Embedded.

* Inline statement.

Co-authored-by: Benjamin Eberlei <kontakt@beberlei.de>

.doctrine-project.json

@@ -7,26 +7,38 @@
     "versions": [
         {
             "name": "3.0",
-            "branchName": "master",
+            "branchName": "3.0.x",
             "slug": "latest",
             "upcoming": true
         },
         {
-            "name": "2.8",
-            "branchName": "2.8.x",
-            "slug": "2.8",
+            "name": "2.10",
+            "branchName": "2.10.x",
+            "slug": "2.10",
             "upcoming": true
         },
         {
-            "name": "2.7",
-            "branchName": "2.7",
-            "slug": "2.7",
+            "name": "2.9",
+            "branchName": "2.9.x",
+            "slug": "2.9",
             "current": true,
             "aliases": [
                 "current",
                 "stable"
             ]
         },
+        {
+            "name": "2.8",
+            "branchName": "2.8.x",
+            "slug": "2.8",
+            "maintained": false
+        },
+        {
+            "name": "2.7",
+            "branchName": "2.7",
+            "slug": "2.7",
+            "maintained": false
+        },
         {
             "name": "2.6",
             "branchName": "2.6",

.gitattributes

@@ -1,10 +1,10 @@
 /tests export-ignore
 /tools export-ignore
+/docs export-ignore
 /.github export-ignore
+.doctrine-project.json export-ignore
 .gitattributes export-ignore
 .gitignore export-ignore
-.gitmodules export-ignore
-.travis.yml export-ignore
 build.properties export-ignore
 build.properties.dev export-ignore
 build.xml export-ignore
@@ -14,4 +14,6 @@ run-all.sh export-ignore
 phpcs.xml.dist export-ignore
 phpbench.json export-ignore
 phpstan.neon export-ignore
+phpstan-baseline.neon export-ignore
 psalm.xml export-ignore
+psalm-baseline.xml export-ignore

.github/workflows/coding-standard.yml

@@ -1,12 +1,17 @@
-name: Static Analysis
+name: "Coding Standards"
 
 on:
   pull_request:
+    branches:
+      - "*.x"
+  push:
+    branches:
+      - "*.x"
 
 jobs:
   coding-standards:
     name: "Coding Standards"
-    runs-on: "ubuntu-latest"
+    runs-on: "ubuntu-20.04"
 
     strategy:
       matrix:
@@ -16,8 +21,6 @@ jobs:
     steps:
       - name: "Checkout"
         uses: "actions/checkout@v2"
-        with:
-          fetch-depth: 10
 
       - name: "Install PHP"
         uses: "shivammathur/setup-php@v2"
@@ -26,21 +29,11 @@ jobs:
           php-version: "${{ matrix.php-version }}"
           tools: "cs2pr"
 
-      - name: "Cache dependencies installed with composer"
-        uses: "actions/cache@v1"
+      - name: "Install dependencies with Composer"
+        uses: "ramsey/composer-install@v1"
         with:
-          path: "~/.composer/cache"
-          key: "php-${{ matrix.php-version }}-composer-locked-${{ hashFiles('composer.lock') }}"
-          restore-keys: "php-${{ matrix.php-version }}-composer-locked-"
+          dependency-versions: "highest"
 
-      - name: "Install dependencies with composer"
-        run: "composer update --no-interaction --no-progress --no-suggest"
-
-      - name: "Install git-phpcs"
-        run: "wget https://github.com/diff-sniffer/git/releases/download/0.3.2/git-phpcs.phar"
-
-      - name: "Fetch head branch"
-        run: "git remote set-branches --add origin $GITHUB_BASE_REF && git fetch origin $GITHUB_BASE_REF"
-
-      - name: "Run git-phpcs"
-        run: "php git-phpcs.phar origin/$GITHUB_BASE_REF...$GITHUB_SHA --report=checkstyle | cs2pr"
+      # https://github.com/doctrine/.github/issues/3
+      - name: "Run PHP_CodeSniffer"
+        run: "vendor/bin/phpcs -q --no-colors --report=checkstyle | cs2pr"

.github/workflows/continuous-integration.yml

@@ -18,11 +18,7 @@ jobs:
           - "7.2"
           - "7.3"
           - "7.4"
-        deps:
-          - "normal"
-        include:
-          - deps: "low"
-            php-version: "7.3"
+          - "8.0"
 
     steps:
       - name: "Checkout"
@@ -38,20 +34,8 @@ jobs:
           coverage: "pcov"
           ini-values: "zend.assertions=1"
 
-      - name: "Cache dependencies installed with composer"
-        uses: "actions/cache@v2"
-        with:
-          path: "~/.composer/cache"
-          key: "php-${{ matrix.php-version }}-composer-locked-${{ hashFiles('composer.lock') }}"
-          restore-keys: "php-${{ matrix.php-version }}-composer-locked-"
-
-      - name: "Install dependencies with composer"
-        run: "composer update --no-interaction --no-progress --no-suggest"
-        if: "${{ matrix.deps == 'normal' }}"
-
-      - name: "Install lowest possible dependencies with composer"
-        run: "composer update --no-interaction --no-progress --no-suggest --prefer-dist --prefer-lowest"
-        if: "${{ matrix.deps == 'low' }}"
+      - name: "Install dependencies with Composer"
+        uses: "ramsey/composer-install@v1"
 
       - name: "Run PHPUnit"
         run: "vendor/bin/phpunit -c ci/github/phpunit/sqlite.xml --coverage-clover=coverage-no-cache.xml"
@@ -66,7 +50,7 @@ jobs:
       - name: "Upload coverage file"
         uses: "actions/upload-artifact@v2"
         with:
-          name: "phpunit-sqlite-${{ matrix.deps }}-${{ matrix.php-version }}-coverage"
+          name: "phpunit-sqlite-${{ matrix.php-version }}-coverage"
           path: "coverage*.xml"
 
 
@@ -108,15 +92,8 @@ jobs:
           coverage: "pcov"
           ini-values: "zend.assertions=1"
 
-      - name: "Cache dependencies installed with composer"
-        uses: "actions/cache@v2"
-        with:
-          path: "~/.composer/cache"
-          key: "php-${{ matrix.php-version }}-composer-locked-${{ hashFiles('composer.lock') }}"
-          restore-keys: "php-${{ matrix.php-version }}-composer-locked-"
-
-      - name: "Install dependencies with composer"
-        run: "composer update --no-interaction --no-progress --no-suggest"
+      - name: "Install dependencies with Composer"
+        uses: "ramsey/composer-install@v1"
 
       - name: "Run PHPUnit"
         run: "vendor/bin/phpunit -c ci/github/phpunit/pdo_pgsql.xml --coverage-clover=coverage.xml"
@@ -170,15 +147,8 @@ jobs:
           ini-values: "zend.assertions=1"
           extensions: "${{ matrix.extension }}"
 
-      - name: "Cache dependencies installed with composer"
-        uses: "actions/cache@v2"
-        with:
-          path: "~/.composer/cache"
-          key: "php-${{ matrix.php-version }}-composer-locked-${{ hashFiles('composer.lock') }}"
-          restore-keys: "php-${{ matrix.php-version }}-composer-locked-"
-
-      - name: "Install dependencies with composer"
-        run: "composer update --no-interaction --no-progress --no-suggest"
+      - name: "Install dependencies with Composer"
+        uses: "ramsey/composer-install@v1"
 
       - name: "Run PHPUnit"
         run: "vendor/bin/phpunit -c ci/github/phpunit/${{ matrix.extension }}.xml --coverage-clover=coverage.xml"
@@ -232,15 +202,8 @@ jobs:
           ini-values: "zend.assertions=1"
           extensions: "${{ matrix.extension }}"
 
-      - name: "Cache dependencies installed with composer"
-        uses: "actions/cache@v2"
-        with:
-          path: "~/.composer/cache"
-          key: "php-${{ matrix.php-version }}-composer-locked-${{ hashFiles('composer.lock') }}"
-          restore-keys: "php-${{ matrix.php-version }}-composer-locked-"
-
-      - name: "Install dependencies with composer"
-        run: "composer update --no-interaction --no-progress --no-suggest"
+      - name: "Install dependencies with Composer"
+        uses: "ramsey/composer-install@v1"
 
       - name: "Run PHPUnit"
         run: "vendor/bin/phpunit -c ci/github/phpunit/${{ matrix.extension }}.xml --coverage-clover=coverage-no-cache.xml"
@@ -258,6 +221,38 @@ jobs:
           name: "${{ github.job }}-${{ matrix.mysql-version }}-${{ matrix.extension }}-${{ matrix.php-version }}-coverage"
           path: "coverage*.xml"
 
+  phpunit-lower-php-versions:
+    name: "PHPUnit with SQLite"
+    runs-on: "ubuntu-20.04"
+
+    strategy:
+      matrix:
+        php-version:
+          - "7.1"
+        deps:
+          - "highest"
+          - "lowest"
+
+    steps:
+      - name: "Checkout"
+        uses: "actions/checkout@v2"
+        with:
+          fetch-depth: 2
+
+      - name: "Install PHP"
+        uses: "shivammathur/setup-php@v2"
+        with:
+          php-version: "${{ matrix.php-version }}"
+          ini-values: "zend.assertions=1"
+
+      - name: "Install dependencies with Composer"
+        uses: "ramsey/composer-install@v1"
+        with:
+          dependency-versions: "${{ matrix.deps }}"
+
+      - name: "Run PHPUnit"
+        run: "vendor/bin/phpunit -c ci/github/phpunit/sqlite.xml"
+
   upload_coverage:
     name: "Upload coverage to Codecov"
     runs-on: "ubuntu-20.04"

.github/workflows/release-on-milestone-closed.yml

@@ -35,16 +35,6 @@ jobs:
           "GIT_AUTHOR_NAME": ${{ secrets.GIT_AUTHOR_NAME }}
           "GIT_AUTHOR_EMAIL": ${{ secrets.GIT_AUTHOR_EMAIL }}
 
-      - name: "Create and/or Switch to new Release Branch"
-        uses: "laminas/automatic-releases@v1"
-        with:
-          command-name: "laminas:automatic-releases:switch-default-branch-to-next-minor"
-        env:
-          "GITHUB_TOKEN": ${{ secrets.ORGANIZATION_ADMIN_TOKEN }}
-          "SIGNING_SECRET_KEY": ${{ secrets.SIGNING_SECRET_KEY }}
-          "GIT_AUTHOR_NAME": ${{ secrets.GIT_AUTHOR_NAME }}
-          "GIT_AUTHOR_EMAIL": ${{ secrets.GIT_AUTHOR_EMAIL }}
-
       - name: "Create new milestones"
         uses: "laminas/automatic-releases@v1"
         with:

.github/workflows/static-analysis.yml

@@ -1,12 +1,18 @@
-name: Static Analysis
+
+name: "Static Analysis"
 
 on:
   pull_request:
+    branches:
+      - "*.x"
+  push:
+    branches:
+      - "*.x"
 
 jobs:
   static-analysis-phpstan:
-    name: "PHPStan"
-    runs-on: "ubuntu-latest"
+    name: "Static Analysis with PHPStan"
+    runs-on: "ubuntu-20.04"
 
     strategy:
       matrix:
@@ -22,24 +28,18 @@ jobs:
         with:
           coverage: "none"
           php-version: "${{ matrix.php-version }}"
-          tools: cs2pr
 
-      - name: "Cache dependencies installed with composer"
-        uses: "actions/cache@v1"
+      - name: "Install dependencies with Composer"
+        uses: "ramsey/composer-install@v1"
         with:
-          path: "~/.composer/cache"
-          key: "php-${{ matrix.php-version }}-composer-locked-${{ hashFiles('composer.lock') }}"
-          restore-keys: "php-${{ matrix.php-version }}-composer-locked-"
-
-      - name: "Install dependencies with composer"
-        run: "composer update --no-progress --no-suggest --no-interaction --prefer-dist"
+          dependency-versions: "highest"
 
       - name: "Run a static analysis with phpstan/phpstan"
-        run: "php vendor/bin/phpstan analyse --error-format=checkstyle | cs2pr"
+        run: "vendor/bin/phpstan analyse"
 
   static-analysis-psalm:
-    name: "Psalm"
-    runs-on: "ubuntu-latest"
+    name: "Static Analysis with Psalm"
+    runs-on: "ubuntu-20.04"
 
     strategy:
       matrix:
@@ -56,15 +56,10 @@ jobs:
           coverage: "none"
           php-version: "${{ matrix.php-version }}"
 
-      - name: "Cache dependencies installed with composer"
-        uses: "actions/cache@v1"
+      - name: "Install dependencies with Composer"
+        uses: "ramsey/composer-install@v1"
         with:
-          path: "~/.composer/cache"
-          key: "php-${{ matrix.php-version }}-composer-locked-${{ hashFiles('composer.lock') }}"
-          restore-keys: "php-${{ matrix.php-version }}-composer-locked-"
-
-      - name: "Install dependencies with composer"
-        run: "composer update --no-interaction --no-progress --no-suggest"
+          dependency-versions: "highest"
 
       - name: "Run a static analysis with vimeo/psalm"
         run: "vendor/bin/psalm --show-info=false --stats --output-format=github --threads=$(nproc)"

.gitignore

@@ -16,3 +16,4 @@ vendor/
 /.phpcs-cache
 composer.lock
 /.phpunit.result.cache
+/*.phpunit.xml

CONTRIBUTING.md

@@ -6,30 +6,17 @@ Before we can merge your Pull-Request here are some guidelines that you need to
 These guidelines exist not to annoy you, but to keep the code base clean,
 unified and future proof.
 
-## We only accept PRs  to "master"
+Doctrine has [general contributing guidelines][contributor workflow], make
+sure you follow them.
 
-Our branching strategy is "everything to master first", even
-bugfixes and we then merge them into the stable branches. You should only 
-open pull requests against the master branch. Otherwise we cannot accept the PR.
-
-There is one exception to the rule, when we merged a bug into some stable branches
-we do occasionally accept pull requests that merge the same bug fix into earlier
-branches.
+[contributor workflow]: https://www.doctrine-project.org/contribute/index.html
 
 ## Coding Standard
 
-We use PSR-1 and PSR-2:
+This project follows [`doctrine/coding-standard`][coding standard homepage].
+You may fix many some of the issues with `vendor/bin/phpcbf`.
 
-* https://github.com/php-fig/fig-standards/blob/master/accepted/PSR-1-basic-coding-standard.md
-* https://github.com/php-fig/fig-standards/blob/master/accepted/PSR-2-coding-style-guide.md
-
-with some exceptions/differences:
-
-* Keep the nesting of control structures per method as small as possible
-* Align equals (=) signs
-* Add spaces between assignment, control and return statements
-* Prefer early exit over nesting conditions
-* Add spaces around a negation if condition ``if ( ! $cond)``
+[coding standard homepage]: https://github.com/doctrine/coding-standard
 
 ## Unit-Tests
 
@@ -56,25 +43,19 @@ curl -sS https://getcomposer.org/installer | php --
 
 To run the testsuite against another database, copy the ``phpunit.xml.dist``
 to for example ``mysql.phpunit.xml`` and edit the parameters. You can
-take a look at the ``tests/travis`` folder for some examples. Then run:
+take a look at the ``ci/github/phpunit`` directory for some examples. Then run:
 
     vendor/bin/phpunit -c mysql.phpunit.xml
-    
+
 If you do not provide these parameters, the test suite will use an in-memory
 sqlite database.
 
 Tips for creating unit tests:
 
 1. If you put a test into the `Ticket` namespace as described above, put the testcase and all entities into the same class.
-   See `https://github.com/doctrine/orm/tree/master/tests/Doctrine/Tests/ORM/Functional/Ticket/DDC2306Test.php` for an
+   See `https://github.com/doctrine/orm/tree/2.8.x/tests/Doctrine/Tests/ORM/Functional/Ticket/DDC2306Test.php` for an
    example.
 
-## Travis
-
-We automatically run your pull request through [Travis CI](http://www.travis-ci.org)
-against SQLite, MySQL and PostgreSQL. If you break the tests, we cannot merge your code,
-so please make sure that your code is working before opening up a Pull-Request.
-
 ## Getting merged
 
 Please allow us time to review your pull requests. We will give our best to review

README.md

@@ -1,7 +1,7 @@
-| [Master][Master] | [2.7][2.7] |
-|:----------------:|:----------:|
-| [![Build status][Master image]][Master] | [![Build status][2.7 image]][2.7] |
-| [![Coverage Status][Master coverage image]][Master coverage] | [![Coverage Status][2.7 coverage image]][2.7 coverage] |
+| [3.0.x][3.0] | [2.9.x][2.9] | [2.8.x][2.8] |
+|:----------------:|:----------------:|:----------:|
+| [![Build status][3.0 image]][3.0] | [![Build status][2.9 image]][2.9] | [![Build status][2.8 image]][2.8] |
+| [![Coverage Status][3.0 coverage image]][3.0 coverage]| [![Coverage Status][2.9 coverage image]][2.9 coverage]  | [![Coverage Status][2.8 coverage image]][2.8 coverage] |
 
 Doctrine 2 is an object-relational mapper (ORM) for PHP 7.1+ that provides transparent persistence
 for PHP objects. It sits on top of a powerful database abstraction layer (DBAL). One of its key features
@@ -13,14 +13,18 @@ without requiring unnecessary code duplication.
 ## More resources:
 
 * [Website](http://www.doctrine-project.org)
-* [Documentation](http://docs.doctrine-project.org/projects/doctrine-orm/en/latest/index.html)
+* [Documentation](https://www.doctrine-project.org/projects/doctrine-orm/en/latest/index.html)
 
 
-  [Master image]: https://img.shields.io/travis/doctrine/orm/master.svg?style=flat-square
-  [Master]: https://travis-ci.org/doctrine/orm
-  [Master coverage image]: https://codecov.io/gh/doctrine/orm/branch/master/graph/badge.svg
-  [Master coverage]: https://codecov.io/gh/doctrine/orm/branch/master
-  [2.7 image]: https://img.shields.io/travis/doctrine/orm/2.7.svg?style=flat-square
-  [2.7]: https://github.com/doctrine/orm/tree/2.7
-  [2.7 coverage image]: https://codecov.io/gh/doctrine/orm/branch/2.7/graph/badge.svg
-  [2.7 coverage]: https://codecov.io/gh/doctrine/orm/branch/2.7
+  [3.0 image]: https://github.com/doctrine/orm/actions/workflows/continuous-integration.yml/badge.svg?branch=3.0.x
+  [3.0]: https://github.com/doctrine/orm/tree/3.0.x
+  [3.0 coverage image]: https://codecov.io/gh/doctrine/orm/branch/3.0.x/graph/badge.svg
+  [3.0 coverage]: https://codecov.io/gh/doctrine/orm/branch/3.0.x
+  [2.9 image]: https://github.com/doctrine/orm/actions/workflows/continuous-integration.yml/badge.svg?branch=2.9.x
+  [2.9]: https://github.com/doctrine/orm/tree/2.9.x
+  [2.9 coverage image]: https://codecov.io/gh/doctrine/orm/branch/2.9.x/graph/badge.svg
+  [2.9 coverage]: https://codecov.io/gh/doctrine/orm/branch/2.9.x
+  [2.8 image]: https://github.com/doctrine/orm/actions/workflows/continuous-integration.yml/badge.svg
+  [2.8]: https://github.com/doctrine/orm/tree/2.8
+  [2.8 coverage image]: https://codecov.io/gh/doctrine/orm/branch/2.8.x/graph/badge.svg
+  [2.8 coverage]: https://codecov.io/gh/doctrine/orm/branch/2.8.x

SECURITY.md

@@ -10,8 +10,8 @@ we cannot protect you from SQL injection.
 Please read the documentation chapter on Security in Doctrine DBAL and ORM to
 understand the assumptions we make.
 
-- [DBAL Security Page](https://github.com/doctrine/dbal/blob/master/docs/en/reference/security.rst)
-- [ORM Security Page](https://github.com/doctrine/orm/blob/master/docs/en/reference/security.rst)
+- [DBAL Security Page](https://www.doctrine-project.org/projects/doctrine-dbal/en/latest/reference/security.html)
+- [ORM Security Page](https://www.doctrine-project.org/projects/doctrine-orm/en/latest/reference/security.html)
 
 If you find a Security bug in Doctrine, please report it on Jira and change the
 Security Level to "Security Issues". It will be visible to Doctrine Core

UPGRADE.md

@@ -1,3 +1,43 @@
+# Upgrade to 2.9
+
+## Minor BC BREAK: Setup tool needs cache implementation
+
+With the deprecation of doctrine/cache, the setup tool might no longer work as expected without a different cache
+implementation. To work around this:
+* Install symfony/cache: `composer require symfony/cache`. This will keep previous behaviour without any changes
+* Instantiate caches yourself: to use a different cache implementation, pass a cache instance when calling any
+  configuration factory in the setup tool:
+  ```diff
+  - $config = Setup::createAnnotationMetadataConfiguration($paths, $isDevMode, $proxyDir);
+  + $cache = \Doctrine\Common\Cache\Psr6\DoctrineProvider::wrap($anyPsr6Implementation);
+  + $config = Setup::createAnnotationMetadataConfiguration($paths, $isDevMode, $proxyDir, $cache);
+  ```
+* As a quick workaround, you can lock the doctrine/cache dependency to work around this: `composer require doctrine/cache ^1.11`.
+  Note that this is only recommended as a bandaid fix, as future versions of ORM will no longer work with doctrine/cache
+  1.11.
+  
+## Deprecated: doctrine/cache for metadata caching
+
+The `Doctrine\ORM\Configuration#setMetadataCacheImpl()` method is deprecated and should no longer be used. Please use
+`Doctrine\ORM\Configuration#setMetadataCache()` with any PSR-6 cache adapter instead.
+
+## Removed: flushing metadata cache
+
+To support PSR-6 caches, the `--flush` option for the `orm:clear-cache:metadata` command is ignored. Metadata cache is
+now always cleared regardless of the cache adapter being used.
+
+# Upgrade to 2.8
+
+## Minor BC BREAK: Failed commit now throw OptimisticLockException
+
+Method `Doctrine\ORM\UnitOfWork#commit()` can throw an OptimisticLockException when a commit silently fails and returns false
+since `Doctrine\DBAL\Connection#commit()` signature changed from returning void to boolean
+
+## Deprecated: `Doctrine\ORM\AbstractQuery#iterator()`
+
+The method `Doctrine\ORM\AbstractQuery#iterator()` is deprecated in favor of `Doctrine\ORM\AbstractQuery#toIterable()`.
+Note that `toIterable()` yields results of the query, unlike `iterator()` which yielded each result wrapped into an array.
+
 # Upgrade to 2.7
 
 ## Added `Doctrine\ORM\AbstractQuery#enableResultCache()` and `Doctrine\ORM\AbstractQuery#disableResultCache()` methods	
@@ -30,7 +70,7 @@ Method `Doctrine\ORM\AbstractQuery#useResultCache()` is deprecated because it is
 and `disableResultCache()`. It will be removed in 3.0.
 
 ## Deprecated code generators and related console commands
- 
+
 These console commands have been deprecated:
 
  * `orm:convert-mapping`

bin/doctrine

@@ -1,4 +1,4 @@
 #!/usr/bin/env php
 <?php
 
-include('doctrine.php');
+include(__DIR__ . '/doctrine.php');

ci/github/phpunit/mysqli.xml

@@ -5,7 +5,6 @@
          beStrictAboutOutputDuringTests="true"
          beStrictAboutTodoAnnotatedTests="true"
          failOnRisky="true"
-         failOnWarning="true"
 >
     <php>
         <var name="db_driver" value="mysqli"/>

ci/github/phpunit/pdo_mysql.xml

@@ -5,7 +5,6 @@
          beStrictAboutOutputDuringTests="true"
          beStrictAboutTodoAnnotatedTests="true"
          failOnRisky="true"
-         failOnWarning="true"
 >
     <php>
         <var name="db_driver" value="pdo_mysql"/>

ci/github/phpunit/pdo_pgsql.xml

@@ -5,7 +5,6 @@
          beStrictAboutOutputDuringTests="true"
          beStrictAboutTodoAnnotatedTests="true"
          failOnRisky="true"
-         failOnWarning="true"
 >
     <php>
         <var name="db_driver" value="pdo_pgsql"/>

ci/github/phpunit/sqlite.xml

@@ -5,9 +5,12 @@
          beStrictAboutOutputDuringTests="true"
          beStrictAboutTodoAnnotatedTests="true"
          failOnRisky="true"
-         failOnWarning="true"
 >
     <php>
+        <!-- use an in-memory sqlite database -->
+        <var name="db_driver" value="pdo_sqlite"/>
+        <var name="db_memory" value="true"/>
+
         <!-- necessary change for some CLI/console output test assertions -->
         <env name="COLUMNS" value="120"/>
     </php>

composer.json

@@ -16,29 +16,34 @@
         "sort-packages": true
     },
     "require": {
-        "php": "^7.1",
+        "php": "^7.1|^8.0",
         "ext-pdo": "*",
         "composer/package-versions-deprecated": "^1.8",
-        "doctrine/annotations": "^1.11.1",
-        "doctrine/cache": "^1.9.1",
+        "doctrine/annotations": "^1.13",
+        "doctrine/cache": "^1.11.3|^2.0.3",
         "doctrine/collections": "^1.5",
-        "doctrine/common": "^2.11 || ^3.0",
-        "doctrine/dbal": "^2.9.3",
+        "doctrine/common": "^3.0.3",
+        "doctrine/dbal": "^2.13.0",
+        "doctrine/deprecations": "^0.5.3",
         "doctrine/event-manager": "^1.1",
-        "doctrine/inflector": "^1.0",
+        "doctrine/inflector": "^1.4|^2.0",
         "doctrine/instantiator": "^1.3",
         "doctrine/lexer": "^1.0",
-        "doctrine/persistence": "^1.3.3 || ^2.0",
-        "symfony/console": "^3.0|^4.0|^5.0"
+        "doctrine/persistence": "^2.2",
+        "psr/cache": "^1 || ^2 || ^3",
+        "symfony/console": "^3.0|^4.0|^5.0|^6.0"
     },
     "require-dev": {
-        "doctrine/coding-standard": "^6.0",
-        "phpstan/phpstan": "^0.12.18",
-        "phpunit/phpunit": "^8.0",
-        "symfony/yaml": "^3.4|^4.0|^5.0",
-        "vimeo/psalm": "^3.11"
+        "doctrine/coding-standard": "^9.0",
+        "phpstan/phpstan": "^0.12.83",
+        "phpunit/phpunit": "^7.5|^8.5|^9.4",
+        "squizlabs/php_codesniffer": "3.6.0",
+        "symfony/cache": "^4.4|^5.2",
+        "symfony/yaml": "^3.4|^4.0|^5.0|^6.0",
+        "vimeo/psalm": "4.7.0"
     },
     "suggest": {
+        "symfony/cache": "Provides cache support for Setup Tool with doctrine/cache 2.0",
         "symfony/yaml": "If you want to use YAML Metadata Mapping Driver"
     },
     "autoload": {
@@ -51,12 +56,7 @@
         }
     },
     "bin": ["bin/doctrine"],
-    "extra": {
-        "branch-alias": {
-            "dev-master": "2.7.x-dev"
-        }
-    },
     "archive": {
-        "exclude": ["!vendor", "tests", "*phpunit.xml", ".travis.yml", "build.xml", "build.properties", "composer.phar", "vendor/satooshi", "lib/vendor", "*.swp"]
+        "exclude": ["!vendor", "tests", "*phpunit.xml", "build.xml", "build.properties", "composer.phar", "vendor/satooshi", "lib/vendor", "*.swp"]
     }
 }

docs/LICENSE.md

@@ -1,4 +1,4 @@
-The Doctrine2 documentation is licensed under [CC BY-NC-SA 3.0](http://creativecommons.org/licenses/by-nc-sa/3.0/deed.en_US)
+The Doctrine ORM documentation is licensed under [CC BY-NC-SA 3.0](http://creativecommons.org/licenses/by-nc-sa/3.0/deed.en_US)
 
 Creative Commons Legal Code
 

docs/en/cookbook/aggregate-fields.rst

@@ -6,7 +6,7 @@ Aggregate Fields
 You will often come across the requirement to display aggregate
 values of data that can be computed by using the MIN, MAX, COUNT or
 SUM SQL functions. For any ORM this is a tricky issue
-traditionally. Doctrine 2 offers several ways to get access to
+traditionally. Doctrine ORM offers several ways to get access to
 these values and this article will describe all of them from
 different perspectives.
 

docs/en/cookbook/decorator-pattern.rst

@@ -3,45 +3,45 @@ Persisting the Decorator Pattern
 
 .. sectionauthor:: Chris Woodford <chris.woodford@gmail.com>
 
-This recipe will show you a simple example of how you can use 
-Doctrine 2 to persist an implementation of the
+This recipe will show you a simple example of how you can use
+Doctrine ORM to persist an implementation of the
 `Decorator Pattern <http://en.wikipedia.org/wiki/Decorator_pattern>`_
 
 Component
 ---------
 
-The ``Component`` class needs to be persisted, so it's going to 
-be an ``Entity``. As the top of the inheritance hierarchy, it's going 
-to have to define the persistent inheritance. For this example, we 
-will use Single Table Inheritance, but Class Table Inheritance  
-would work as well. In the discriminator map, we will define two 
-concrete subclasses, ``ConcreteComponent`` and ``ConcreteDecorator``. 
+The ``Component`` class needs to be persisted, so it's going to
+be an ``Entity``. As the top of the inheritance hierarchy, it's going
+to have to define the persistent inheritance. For this example, we
+will use Single Table Inheritance, but Class Table Inheritance
+would work as well. In the discriminator map, we will define two
+concrete subclasses, ``ConcreteComponent`` and ``ConcreteDecorator``.
 
 .. code-block:: php
 
     <?php
-    
+
     namespace Test;
- 
+
     /**
      * @Entity
      * @InheritanceType("SINGLE_TABLE")
      * @DiscriminatorColumn(name="discr", type="string")
-     * @DiscriminatorMap({"cc" = "Test\Component\ConcreteComponent", 
+     * @DiscriminatorMap({"cc" = "Test\Component\ConcreteComponent",
         "cd" = "Test\Decorator\ConcreteDecorator"})
      */
     abstract class Component
     {
- 
+
         /**
          * @Id @Column(type="integer")
          * @GeneratedValue(strategy="AUTO")
          */
         protected $id;
- 
+
         /** @Column(type="string", nullable=true) */
         protected $name;
- 
+
         /**
          * Get id
          * @return integer $id
@@ -50,7 +50,7 @@ concrete subclasses, ``ConcreteComponent`` and ``ConcreteDecorator``.
         {
             return $this->id;
         }
- 
+
         /**
          * Set name
          * @param string $name
@@ -59,7 +59,7 @@ concrete subclasses, ``ConcreteComponent`` and ``ConcreteDecorator``.
         {
             $this->name = $name;
         }
- 
+
         /**
          * Get name
          * @return string $name
@@ -68,33 +68,33 @@ concrete subclasses, ``ConcreteComponent`` and ``ConcreteDecorator``.
         {
             return $this->name;
         }
- 
+
     }
-    
+
 ConcreteComponent
 -----------------
 
-The ``ConcreteComponent`` class is pretty simple and doesn't do much 
-more than extend the abstract ``Component`` class (only for the 
+The ``ConcreteComponent`` class is pretty simple and doesn't do much
+more than extend the abstract ``Component`` class (only for the
 purpose of keeping this example simple).
 
 .. code-block:: php
 
     <?php
-    
+
     namespace Test\Component;
- 
+
     use Test\Component;
- 
+
     /** @Entity */
     class ConcreteComponent extends Component
     {}
-    
+
 Decorator
 ---------
 
-The ``Decorator`` class doesn't need to be persisted, but it does 
-need to define an association with a persisted ``Entity``. We can 
+The ``Decorator`` class doesn't need to be persisted, but it does
+need to define an association with a persisted ``Entity``. We can
 use a ``MappedSuperclass`` for this.
 
 .. code-block:: php
@@ -102,17 +102,17 @@ use a ``MappedSuperclass`` for this.
     <?php
 
     namespace Test;
- 
+
     /** @MappedSuperclass */
     abstract class Decorator extends Component
     {
- 
+
         /**
          * @OneToOne(targetEntity="Test\Component", cascade={"all"})
          * @JoinColumn(name="decorates", referencedColumnName="id")
          */
         protected $decorates;
- 
+
         /**
          * initialize the decorator
          * @param Component $c
@@ -121,7 +121,7 @@ use a ``MappedSuperclass`` for this.
         {
             $this->setDecorates($c);
         }
- 
+
         /**
          * (non-PHPdoc)
          * @see Test.Component::getName()
@@ -130,7 +130,7 @@ use a ``MappedSuperclass`` for this.
         {
     	    return 'Decorated ' . $this->getDecorates()->getName();
         }
- 
+
         /**
          * the component being decorated
          * @return Component
@@ -139,7 +139,7 @@ use a ``MappedSuperclass`` for this.
         {
     	    return $this->decorates;
         }
- 
+
         /**
          * sets the component being decorated
          * @param Component $c
@@ -148,52 +148,52 @@ use a ``MappedSuperclass`` for this.
         {
     	    $this->decorates = $c;
         }
- 
+
     }
 
-All operations on the ``Decorator`` (i.e. persist, remove, etc) will 
-cascade from the ``Decorator`` to the ``Component``. This means that 
-when we persist a ``Decorator``, Doctrine will take care of 
-persisting the chain of decorated objects for us. A ``Decorator`` can 
-be treated exactly as a ``Component`` when it comes time to 
+All operations on the ``Decorator`` (i.e. persist, remove, etc) will
+cascade from the ``Decorator`` to the ``Component``. This means that
+when we persist a ``Decorator``, Doctrine will take care of
+persisting the chain of decorated objects for us. A ``Decorator`` can
+be treated exactly as a ``Component`` when it comes time to
 persisting it.
- 
-The ``Decorator's`` constructor accepts an instance of a 
-``Component``, as defined by the ``Decorator`` pattern. The 
-setDecorates/getDecorates methods have been defined as protected to 
-hide the fact that a ``Decorator`` is decorating a ``Component`` and 
-keeps the ``Component`` interface and the ``Decorator`` interface 
+
+The ``Decorator's`` constructor accepts an instance of a
+``Component``, as defined by the ``Decorator`` pattern. The
+setDecorates/getDecorates methods have been defined as protected to
+hide the fact that a ``Decorator`` is decorating a ``Component`` and
+keeps the ``Component`` interface and the ``Decorator`` interface
 identical.
 
-To illustrate the intended result of the ``Decorator`` pattern, the 
-getName() method has been overridden to append a string to the 
+To illustrate the intended result of the ``Decorator`` pattern, the
+getName() method has been overridden to append a string to the
 ``Component's`` getName() method.
 
 ConcreteDecorator
 -----------------
 
-The final class required to complete a simple implementation of the 
-Decorator pattern is the ``ConcreteDecorator``. In order to further 
-illustrate how the ``Decorator`` can alter data as it moves through 
-the chain of decoration, a new field, "special", has been added to 
-this class. The getName() has been overridden and appends the value 
-of the getSpecial() method to its return value.  
+The final class required to complete a simple implementation of the
+Decorator pattern is the ``ConcreteDecorator``. In order to further
+illustrate how the ``Decorator`` can alter data as it moves through
+the chain of decoration, a new field, "special", has been added to
+this class. The getName() has been overridden and appends the value
+of the getSpecial() method to its return value.
 
 .. code-block:: php
 
     <?php
-    
+
     namespace Test\Decorator;
- 
+
     use Test\Decorator;
- 
+
     /** @Entity */
     class ConcreteDecorator extends Decorator
     {
- 
+
         /** @Column(type="string", nullable=true) */
         protected $special;
- 
+
         /**
          * Set special
          * @param string $special
@@ -202,7 +202,7 @@ of the getSpecial() method to its return value.
         {
             $this->special = $special;
         }
- 
+
         /**
          * Get special
          * @return string $special
@@ -211,7 +211,7 @@ of the getSpecial() method to its return value.
         {
             return $this->special;
         }
- 
+
         /**
          * (non-PHPdoc)
          * @see Test.Component::getName()
@@ -219,55 +219,55 @@ of the getSpecial() method to its return value.
         public function getName()
         {
             return '[' . $this->getSpecial()
-                . '] ' . parent::getName(); 
+                . '] ' . parent::getName();
         }
- 
+
     }
-    
+
 Examples
 --------
 
-Here is an example of how to persist and retrieve your decorated 
+Here is an example of how to persist and retrieve your decorated
 objects
 
 .. code-block:: php
 
     <?php
-    
+
     use Test\Component\ConcreteComponent,
         Test\Decorator\ConcreteDecorator;
- 
-    // assumes Doctrine 2 is configured and an instance of
+
+    // assumes Doctrine ORM is configured and an instance of
     // an EntityManager is available as $em
- 
+
     // create a new concrete component
     $c = new ConcreteComponent();
     $c->setName('Test Component 1');
     $em->persist($c); // assigned unique ID = 1
- 
+
     // create a new concrete decorator
     $c = new ConcreteComponent();
     $c->setName('Test Component 2');
- 
+
     $d = new ConcreteDecorator($c);
     $d->setSpecial('Really');
-    $em->persist($d); 
+    $em->persist($d);
     // assigns c as unique ID = 2, and d as unique ID = 3
-    
+
     $em->flush();
 
     $c = $em->find('Test\Component', 1);
     $d = $em->find('Test\Component', 3);
- 
+
     echo get_class($c);
     // prints: Test\Component\ConcreteComponent
- 
+
     echo $c->getName();
-    // prints: Test Component 1 
- 
-    echo get_class($d) 
+    // prints: Test Component 1
+
+    echo get_class($d)
     // prints: Test\Component\ConcreteDecorator
- 
+
     echo $d->getName();
     // prints: [Really] Decorated Test Component 2
-    
+

docs/en/cookbook/dql-custom-walkers.rst

@@ -1,4 +1,4 @@
-Extending DQL in Doctrine 2: Custom AST Walkers
+Extending DQL in Doctrine ORM: Custom AST Walkers
 ===============================================
 
 .. sectionauthor:: Benjamin Eberlei <kontakt@beberlei.de>
@@ -12,7 +12,7 @@ the Doctrine ORM.
 
 In Doctrine 1 the DQL language was not implemented using a real
 parser. This made modifications of the DQL by the user impossible.
-Doctrine 2 in contrast has a real parser for the DQL language,
+Doctrine ORM in contrast has a real parser for the DQL language,
 which transforms the DQL statement into an
 `Abstract Syntax Tree <http://en.wikipedia.org/wiki/Abstract_syntax_tree>`_
 and generates the appropriate SQL statement for it. Since this

docs/en/cookbook/dql-user-defined-functions.rst

@@ -10,7 +10,7 @@ change it during the life of your project. This decision for a
 specific vendor potentially allows you to make use of powerful SQL
 features that are unique to the vendor.
 
-It is worth to mention that Doctrine 2 also allows you to handwrite
+It is worth to mention that Doctrine ORM also allows you to handwrite
 your SQL instead of extending the DQL parser. Extending DQL is sort of an
 advanced extension point. You can map arbitrary SQL to your objects
 and gain access to vendor specific functionalities using the
@@ -240,7 +240,7 @@ functionalities in DQL, we would be excited to see user extensions
 that add vendor specific function packages, for example more math
 functions, XML + GIS Support, Hashing functions and so on.
 
-For 2.0 we will come with the current set of functions, however for
+For ORM we will come with the current set of functions, however for
 a future version we will re-evaluate if we can abstract even more
 vendor sql functions and extend the DQL languages scope.
 

docs/en/cookbook/implementing-the-notify-changetracking-policy.rst

@@ -10,6 +10,11 @@ code should look like. We will implement it on a
 `Layer Supertype <http://martinfowler.com/eaaCatalog/layerSupertype.html>`_
 for all our domain objects.
 
+.. note::
+
+    The notify change tracking policy is deprecated and will be removed in ORM 3.0.
+    (`Details <https://github.com/doctrine/orm/issues/8383>`_)
+
 Implementing NotifyPropertyChanged
 ----------------------------------
 

docs/en/cookbook/mysql-enums.rst

@@ -1,12 +1,12 @@
 Mysql Enums
 ===========
 
-The type system of Doctrine 2 consists of flyweights, which means there is only
+The type system of Doctrine ORM consists of flyweights, which means there is only
 one instance of any given type. Additionally types do not contain state. Both
 assumptions make it rather complicated to work with the Enum Type of MySQL that
 is used quite a lot by developers.
 
-When using Enums with a non-tweaked Doctrine 2 application you will get
+When using Enums with a non-tweaked Doctrine ORM application you will get
 errors from the Schema-Tool commands due to the unknown database type "enum".
 By default Doctrine does not map the MySQL enum type to a Doctrine type.
 This is because Enums contain state (their allowed values) and Doctrine

docs/en/cookbook/resolve-target-entity-listener.rst

@@ -1,13 +1,11 @@
 Keeping your Modules independent
 =================================
 
-.. versionadded:: 2.2
-
 One of the goals of using modules is to create discrete units of functionality
 that do not have many (if any) dependencies, allowing you to use that
 functionality in other applications without including unnecessary items.
 
-Doctrine 2.2 includes a new utility called the ``ResolveTargetEntityListener``,
+Doctrine ORM includes a new utility called the ``ResolveTargetEntityListener``,
 that functions by intercepting certain calls inside Doctrine and rewrite
 targetEntity parameters in your metadata mapping at runtime. It means that
 in your bundle you are able to use an interface or abstract class in your

docs/en/cookbook/strategy-cookbook-introduction.rst

@@ -30,7 +30,7 @@ highly uncomfortable because of the following:
    every panel-type? This wouldn't be flexible. You might be tempted
    to add an AbstractPanelEntity and an AbstractBlockEntity that use
    class inheritance. Your page could then only confer to the
-   AbstractPanelType and Doctrine 2 would do the rest for you, i.e.
+   AbstractPanelType and Doctrine ORM would do the rest for you, i.e.
    load the right entities. But - you'll for sure have lots of panels
    and blocks, and even worse, you'd have to edit the discriminator
    map *manually* every time you or another developer implements a new
@@ -152,7 +152,7 @@ As you can see, we have a method "setBlockEntity" which ties a potential strateg
 
         /**
          * This var contains the classname of the strategy
-         * that is used for this blockitem. (This string (!) value will be persisted by Doctrine 2)
+         * that is used for this blockitem. (This string (!) value will be persisted by Doctrine ORM)
          *
          * This is a doctrine field, so make sure that you use an @column annotation or setup your
          * yaml or xml files correctly
@@ -161,7 +161,7 @@ As you can see, we have a method "setBlockEntity" which ties a potential strateg
         protected $strategyClassName;
 
         /**
-         * This var contains an instance of $this->blockStrategy. Will not be persisted by Doctrine 2.
+         * This var contains an instance of $this->blockStrategy. Will not be persisted by Doctrine ORM.
          *
          * @var BlockStrategyInterface
          */
@@ -199,7 +199,7 @@ As you can see, we have a method "setBlockEntity" which ties a potential strateg
             $strategy->setBlockEntity($this);
         }
 
-Now, the important point is that $strategyClassName is a Doctrine 2
+Now, the important point is that $strategyClassName is a Doctrine ORM
 field, i.e. Doctrine will persist this value. This is only the
 class name of your strategy and not an instance!
 

docs/en/cookbook/validation-of-entities.rst

@@ -3,7 +3,7 @@ Validation of Entities
 
 .. sectionauthor:: Benjamin Eberlei <kontakt@beberlei.de>
 
-Doctrine 2 does not ship with any internal validators, the reason
+Doctrine ORM does not ship with any internal validators, the reason
 being that we think all the frameworks out there already ship with
 quite decent ones that can be integrated into your Domain easily.
 What we offer are hooks to execute any kind of validation.

docs/en/cookbook/working-with-datetime.rst

@@ -3,7 +3,7 @@ Working with DateTime Instances
 
 There are many nitty gritty details when working with PHPs DateTime instances. You have to know their inner
 workings pretty well not to make mistakes with date handling. This cookbook entry holds several
-interesting pieces of information on how to work with PHP DateTime instances in Doctrine 2.
+interesting pieces of information on how to work with PHP DateTime instances in ORM.
 
 DateTime changes are detected by Reference
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@@ -58,7 +58,7 @@ Handling different Timezones with the DateTime Type
 
 If you first come across the requirement to save different timezones you may be still optimistic about how
 to manage this mess,
-however let me crush your expectations fast. There is not a single database out there (supported by Doctrine 2)
+however let me crush your expectations fast. There is not a single database out there (supported by Doctrine ORM)
 that supports timezones correctly. Correctly here means that you can cover all the use-cases that
 can come up with timezones. If you don't believe me you should read up on `Storing DateTime
 in Databases <http://derickrethans.nl/storing-date-time-in-database.html>`_.
@@ -67,7 +67,7 @@ The problem is simple. Not a single database vendor saves the timezone, only the
 However with frequent daylight saving and political timezone changes you can have a UTC offset that moves
 in different offset directions depending on the real location.
 
-The solution for this dilemma is simple. Don't use timezones with DateTime and Doctrine 2. However there is a workaround
+The solution for this dilemma is simple. Don't use timezones with DateTime and Doctrine ORM. However there is a workaround
 that even allows correct date-time handling with timezones:
 
 1. Always convert any DateTime instance to UTC.

docs/en/reference/advanced-configuration.rst

@@ -11,15 +11,15 @@ steps of configuration.
     <?php
     use Doctrine\ORM\EntityManager,
         Doctrine\ORM\Configuration;
-    
+
     // ...
-    
+
     if ($applicationMode == "development") {
         $cache = new \Doctrine\Common\Cache\ArrayCache;
     } else {
         $cache = new \Doctrine\Common\Cache\ApcCache;
     }
-    
+
     $config = new Configuration;
     $config->setMetadataCacheImpl($cache);
     $driverImpl = $config->newDefaultAnnotationDriver('/path/to/lib/MyProject/Entities');
@@ -27,18 +27,18 @@ steps of configuration.
     $config->setQueryCacheImpl($cache);
     $config->setProxyDir('/path/to/myproject/lib/MyProject/Proxies');
     $config->setProxyNamespace('MyProject\Proxies');
-    
+
     if ($applicationMode == "development") {
         $config->setAutoGenerateProxyClasses(true);
     } else {
         $config->setAutoGenerateProxyClasses(false);
     }
-    
+
     $connectionOptions = array(
         'driver' => 'pdo_sqlite',
         'path' => 'database.sqlite'
     );
-    
+
     $em = EntityManager::create($connectionOptions, $config);
 
 .. note::
@@ -101,10 +101,11 @@ Gets or sets the metadata driver implementation that is used by
 Doctrine to acquire the object-relational metadata for your
 classes.
 
-There are currently 4 available implementations:
+There are currently 5 available implementations:
 
 
 -  ``Doctrine\ORM\Mapping\Driver\AnnotationDriver``
+-  ``Doctrine\ORM\Mapping\Driver\AttributeDriver``
 -  ``Doctrine\ORM\Mapping\Driver\XmlDriver``
 -  ``Doctrine\ORM\Mapping\Driver\YamlDriver``
 -  ``Doctrine\ORM\Mapping\Driver\DriverChain``
@@ -259,7 +260,7 @@ In a production environment, it is highly recommended to use
 AUTOGENERATE_NEVER to allow for optimal performances. The other
 options are interesting in development environment.
 
-Before v2.4, ``setAutoGenerateProxyClasses`` would accept a boolean
+``setAutoGenerateProxyClasses`` can accept a boolean
 value. This is still possible, ``FALSE`` being equivalent to
 AUTOGENERATE_NEVER and ``TRUE`` to AUTOGENERATE_ALWAYS.
 
@@ -299,7 +300,7 @@ Proxy Objects
 
 A proxy object is an object that is put in place or used instead of
 the "real" object. A proxy object can add behavior to the object
-being proxied without that object being aware of it. In Doctrine 2,
+being proxied without that object being aware of it. In ORM,
 proxy objects are used to realize several features but mainly for
 transparent lazy-loading.
 
@@ -309,7 +310,7 @@ of the objects. This is an essential property as without it there
 would always be fragile partial objects at the outer edges of your
 object graph.
 
-Doctrine 2 implements a variant of the proxy pattern where it
+Doctrine ORM implements a variant of the proxy pattern where it
 generates classes that extend your entity classes and adds
 lazy-loading capabilities to them. Doctrine can then give you an
 instance of such a proxy class whenever you request an object of
@@ -411,7 +412,7 @@ be found.
 Multiple Metadata Sources
 -------------------------
 
-When using different components using Doctrine 2 you may end up
+When using different components using Doctrine ORM you may end up
 with them using two different metadata drivers, for example XML and
 YAML. You can use the DriverChain Metadata implementations to
 aggregate these drivers based on namespaces:

docs/en/reference/annotations-reference.rst

@@ -5,29 +5,29 @@ You've probably used docblock annotations in some form already,
 most likely to provide documentation metadata for a tool like
 ``PHPDocumentor`` (@author, @link, ...). Docblock annotations are a
 tool to embed metadata inside the documentation section which can
-then be processed by some tool. Doctrine 2 generalizes the concept
+then be processed by some tool. Doctrine ORM generalizes the concept
 of docblock annotations so that they can be used for any kind of
 metadata and so that it is easy to define new docblock annotations.
 In order to allow more involved annotation values and to reduce the
-chances of clashes with other docblock annotations, the Doctrine 2
+chances of clashes with other docblock annotations, the Doctrine ORM
 docblock annotations feature an alternative syntax that is heavily
 inspired by the Annotation syntax introduced in Java 5.
 
 The implementation of these enhanced docblock annotations is
 located in the ``Doctrine\Common\Annotations`` namespace and
-therefore part of the Common package. Doctrine 2 docblock
+therefore part of the Common package. Doctrine ORM docblock
 annotations support namespaces and nested annotations among other
-things. The Doctrine 2 ORM defines its own set of docblock
+things. The Doctrine ORM ORM defines its own set of docblock
 annotations for supplying object-relational mapping metadata.
 
 .. note::
 
     If you're not comfortable with the concept of docblock
-    annotations, don't worry, as mentioned earlier Doctrine 2 provides
+    annotations, don't worry, as mentioned earlier Doctrine ORM provides
     XML and YAML alternatives and you could easily implement your own
     favourite mechanism for defining ORM metadata.
 
-In this chapter a reference of every Doctrine 2 Annotation is given
+In this chapter a reference of every Doctrine ORM Annotation is given
 with short explanations on their context and usage.
 
 Index
@@ -89,7 +89,7 @@ as part of the lifecycle of the instance variables entity-class.
 Required attributes:
 
 -  **type**: Name of the Doctrine Type which is converted between PHP
-   and Database representation.
+   and Database representation. Default to ``string`` or :ref:`Type from PHP property type <reference-php-mapping-types>`
 
 Optional attributes:
 
@@ -213,7 +213,7 @@ Optional attributes:
 ~~~~~~~~~~~~~~~~~~~~~
 
 The Change Tracking Policy annotation allows to specify how the
-Doctrine 2 UnitOfWork should detect changes in properties of
+Doctrine ORM UnitOfWork should detect changes in properties of
 entities during flush. By default each entity is checked according
 to a deferred implicit strategy, which means upon flush UnitOfWork
 compares all the properties of an entity to a previously stored
@@ -254,7 +254,7 @@ Example:
 
     <?php
     /**
-     * @Id 
+     * @Id
      * @Column(type="integer")
      * @GeneratedValue(strategy="CUSTOM")
      * @CustomIdGenerator(class="My\Namespace\MyIdGenerator")
@@ -350,7 +350,7 @@ in order to specify that it is an embedded class.
 
 Required attributes:
 
--  **class**: The embeddable class
+-  **class**: The embeddable class. You can omit this value if you use a PHP property type instead.
 
 
 .. code-block:: php
@@ -388,7 +388,7 @@ Optional attributes:
    EntityRepository. Use of repositories for entities is encouraged to keep
    specialized DQL and SQL operations separated from the Model/Domain
    Layer.
--  **readOnly**: (>= 2.1) Specifies that this entity is marked as read only and not
+-  **readOnly**: Specifies that this entity is marked as read only and not
    considered for change-tracking. Entities of this type can be persisted
    and removed though.
 
@@ -513,7 +513,8 @@ Required attributes:
 
 
 -  **name**: Name of the Index
--  **columns**: Array of columns.
+-  **fields**: Array of fields. Exactly one of **fields**, **columns** is required.
+-  **columns**: Array of columns. Exactly one of **fields**, **columns** is required.
 
 Optional attributes:
 
@@ -535,6 +536,19 @@ Basic example:
     {
     }
 
+Basic example using fields:
+
+.. code-block:: php
+
+    <?php
+    /**
+     * @Entity
+     * @Table(name="ecommerce_products",indexes={@Index(name="search_idx", fields={"name", "email"})})
+     */
+    class ECommerceProduct
+    {
+    }
+
 Example with partial indexes:
 
 .. code-block:: php
@@ -715,6 +729,7 @@ Required attributes:
 
 -  **targetEntity**: FQCN of the referenced target entity. Can be the
    unqualified class name if both classes are in the same namespace.
+   You can omit this value if you use a PHP property type instead.
    *IMPORTANT:* No leading backslash!
 
 Optional attributes:
@@ -812,7 +827,7 @@ The @MappedSuperclass annotation cannot be used in conjunction with
 Optional attributes:
 
 
--  **repositoryClass**: (>= 2.2) Specifies the FQCN of a subclass of the EntityRepository.
+-  **repositoryClass**: Specifies the FQCN of a subclass of the EntityRepository.
    That will be inherited for all subclasses of that Mapped Superclass.
 
 Example:
@@ -840,6 +855,11 @@ Example:
 
 @NamedNativeQuery
 ~~~~~~~~~~~~~~~~~
+
+.. note::
+
+    Named Native Queries are deprecated as of version 2.9 and will be removed in ORM 3.0
+
 Is used to specify a native SQL named query.
 The NamedNativeQuery annotation can be applied to an entity or mapped superclass.
 
@@ -923,6 +943,7 @@ Required attributes:
 
 -  **targetEntity**: FQCN of the referenced target entity. Can be the
    unqualified class name if both classes are in the same namespace.
+   When typed properties are used it is inherited from PHP type.
    *IMPORTANT:* No leading backslash!
 
 Optional attributes:
@@ -1231,7 +1252,7 @@ Optional attributes:
 
 -  **indexes**: Array of @Index annotations
 -  **uniqueConstraints**: Array of @UniqueConstraint annotations.
--  **schema**: (>= 2.5) Name of the schema the table lies in.
+-  **schema**: Name of the schema the table lies in.
 
 Example:
 
@@ -1263,7 +1284,8 @@ Required attributes:
 
 
 -  **name**: Name of the Index
--  **columns**: Array of columns.
+-  **fields**: Array of fields. Exactly one of **fields**, **columns** is required.
+-  **columns**: Array of columns. Exactly one of **fields**, **columns** is required.
 
 Optional attributes:
 
@@ -1285,6 +1307,19 @@ Basic example:
     {
     }
 
+Basic example using fields:
+
+.. code-block:: php
+
+    <?php
+    /**
+     * @Entity
+     * @Table(name="ecommerce_products",uniqueConstraints={@UniqueConstraint(name="search_idx", fields={"name", "email"})})
+     */
+    class ECommerceProduct
+    {
+    }
+
 Example with partial indexes:
 
 .. code-block:: php

docs/en/reference/architecture.rst

@@ -2,29 +2,29 @@ Architecture
 ============
 
 This chapter gives an overview of the overall architecture,
-terminology and constraints of Doctrine 2. It is recommended to
+terminology and constraints of Doctrine ORM. It is recommended to
 read this chapter carefully.
 
 Using an Object-Relational Mapper
 ---------------------------------
 
-As the term ORM already hints at, Doctrine 2 aims to simplify the
+As the term ORM already hints at, Doctrine ORM aims to simplify the
 translation between database rows and the PHP object model. The
 primary use case for Doctrine are therefore applications that
 utilize the Object-Oriented Programming Paradigm. For applications
-that do not primarily work with objects Doctrine 2 is not suited very
+that do not primarily work with objects Doctrine ORM is not suited very
 well.
 
 Requirements
 ------------
 
-Doctrine 2 requires a minimum of PHP 7.1. For greatly improved
+Doctrine ORM requires a minimum of PHP 7.1. For greatly improved
 performance it is also recommended that you use APC with PHP.
 
-Doctrine 2 Packages
+Doctrine ORM Packages
 -------------------
 
-Doctrine 2 is divided into three main packages.
+Doctrine ORM is divided into three main packages.
 
 -  Common
 -  DBAL (includes Common)
@@ -166,8 +166,8 @@ did not find a way yet, if you did, please contact us).
 The EntityManager
 ~~~~~~~~~~~~~~~~~
 
-The ``EntityManager`` class is a central access point to the ORM
-functionality provided by Doctrine 2. The ``EntityManager`` API is
+The ``EntityManager`` class is a central access point to the
+functionality provided by Doctrine ORM. The ``EntityManager`` API is
 used to manage the persistence of your objects and to query for
 persistent objects.
 

docs/en/reference/association-mapping.rst

@@ -22,9 +22,9 @@ One tip for working with relations is to read the relation from left to right, w
 - ManyToOne - Many instances of the current Entity refer to One instance of the referred Entity.
 - OneToOne - One instance of the current Entity refers to One instance of the referred Entity.
 
-See below for all the possible relations. 
+See below for all the possible relations.
 
-An association is considered to be unidirectional if only one side of the association has 
+An association is considered to be unidirectional if only one side of the association has
 a property referring to the other side.
 
 To gain a full understanding of associations you should also read about :doc:`owning and
@@ -1061,6 +1061,70 @@ join columns default to the simple, unqualified class name of the
 targeted class followed by "\_id". The referencedColumnName always
 defaults to "id", just as in one-to-one or many-to-one mappings.
 
+Additionally, when using typed properties with Doctrine 2.9 or newer
+you can skip ``targetEntity`` in ``ManyToOne`` and ``OneToOne``
+associations as they will be set based on type. Also ``nullable``
+attribute on ``JoinColumn`` will be inherited from PHP type. So that:
+
+.. configuration-block::
+
+    .. code-block:: php
+
+        <?php
+        /** @OneToOne */
+        private Shipment $shipment;
+
+    .. code-block:: xml
+
+        <doctrine-mapping>
+            <entity class="Product">
+                <one-to-one field="shipment" />
+            </entity>
+        </doctrine-mapping>
+
+    .. code-block:: yaml
+
+        Product:
+          type: entity
+          oneToOne:
+            shipment: ~
+
+Is essentially the same as following:
+
+.. configuration-block::
+
+    .. code-block:: php
+
+        <?php
+        /**
+         * One Product has One Shipment.
+         * @OneToOne(targetEntity="Shipment")
+         * @JoinColumn(name="shipment_id", referencedColumnName="id", nullable=false)
+         */
+        private Shipment $shipment;
+
+    .. code-block:: xml
+
+        <doctrine-mapping>
+            <entity class="Product">
+                <one-to-one field="shipment" target-entity="Shipment">
+                    <join-column name="shipment_id" referenced-column-name="id" nulable=false />
+                </one-to-one>
+            </entity>
+        </doctrine-mapping>
+
+    .. code-block:: yaml
+
+        Product:
+          type: entity
+          oneToOne:
+            shipment:
+              targetEntity: Shipment
+              joinColumn:
+                name: shipment_id
+                referencedColumnName: id
+                nullable: false
+
 If you accept these defaults, you can reduce the mapping code to a
 minimum.
 

docs/en/reference/basic-mapping.rst

@@ -211,6 +211,25 @@ list:
 - ``options``: (optional) Key-value pairs of options that get passed
   to the underlying database platform when generating DDL statements.
 
+.. _reference-php-mapping-types:
+
+PHP Types Mapping
+_________________
+
+Since version 2.9 Doctrine can determine usable defaults from property types
+on entity classes. When property type is nullable the default for ``nullable``
+Column attribute is set to TRUE. Additionally, Doctrine will map PHP types
+to ``type`` attribute as follows:
+
+- ``DateInterval``: ``dateinterval``
+- ``DateTime``: ``datetime``
+- ``DateTimeImmutable``: ``datetime_immutable``
+- ``array``: ``json``
+- ``bool``: ``boolean``
+- ``float``: ``float``
+- ``int``: ``integer``
+- ``string`` or any other type: ``string``
+
 .. _reference-mapping-types:
 
 Doctrine Mapping Types
@@ -328,7 +347,7 @@ annotation.
 
 In most cases using the automatic generator strategy (``@GeneratedValue``) is
 what you want. It defaults to the identifier generation mechanism your current
-database vendor prefers: AUTO_INCREMENT with MySQL, sequences with PostgreSQL 
+database vendor prefers: AUTO_INCREMENT with MySQL, sequences with PostgreSQL
 and Oracle and so on.
 
 Identifier Generation Strategies
@@ -423,7 +442,7 @@ performance of Doctrine. The allocationSize specifies by how much
 values the sequence is incremented whenever the next value is
 retrieved. If this is larger than 1 (one) Doctrine can generate
 identifier values for the allocationSizes amount of entities. In
-the above example with ``allocationSize=100`` Doctrine 2 would only
+the above example with ``allocationSize=100`` Doctrine ORM would only
 need to access the sequence once to generate the identifiers for
 100 new entities.
 
@@ -451,7 +470,7 @@ need to access the sequence once to generate the identifiers for
 Composite Keys
 ~~~~~~~~~~~~~~
 
-With Doctrine 2 you can use composite primary keys, using ``@Id`` on more then
+With Doctrine ORM you can use composite primary keys, using ``@Id`` on more then
 one column. Some restrictions exist opposed to using a single identifier in
 this case: The use of the ``@GeneratedValue`` annotation is not supported,
 which means you can only use composite keys if you generate the primary key
@@ -484,15 +503,11 @@ according to the used database platform.
 
 .. _reference-basic-mapping-custom-mapping-types:
 
-.. versionadded: 2.3
-
 For more control over column quoting the ``Doctrine\ORM\Mapping\QuoteStrategy`` interface
-was introduced in 2.3. It is invoked for every column, table, alias and other
+was introduced in ORM. It is invoked for every column, table, alias and other
 SQL names. You can implement the QuoteStrategy and set it by calling
 ``Doctrine\ORM\Configuration#setQuoteStrategy()``.
 
-.. versionadded: 2.4
-
 The ANSI Quote Strategy was added, which assumes quoting is not necessary for any SQL name.
 You can use it with the following code:
 

docs/en/reference/batch-processing.rst

@@ -75,7 +75,7 @@ Iterating results
 ~~~~~~~~~~~~~~~~~
 
 An alternative solution for bulk updates is to use the
-``Query#iterate()`` facility to iterate over the query results step
+``Query#toIterable()`` facility to iterate over the query results step
 by step instead of loading the whole result into memory at once.
 The following example shows how to do this, combining the iteration
 with the batching strategy that was already used for bulk inserts:
@@ -86,16 +86,14 @@ with the batching strategy that was already used for bulk inserts:
     $batchSize = 20;
     $i = 1;
     $q = $em->createQuery('select u from MyProject\Model\User u');
-    $iterableResult = $q->iterate();
-    foreach ($iterableResult as $row) {
-        $user = $row[0];
+    foreach ($q->toIterable() as $user) {
         $user->increaseCredit();
         $user->calculateNewBonuses();
+        ++$i;
         if (($i % $batchSize) === 0) {
             $em->flush(); // Executes all updates.
             $em->clear(); // Detaches all objects from Doctrine!
         }
-        ++$i;
     }
     $em->flush();
 
@@ -137,7 +135,7 @@ Iterating results
 ~~~~~~~~~~~~~~~~~
 
 An alternative solution for bulk deletes is to use the
-``Query#iterate()`` facility to iterate over the query results step
+``Query#toIterable()`` facility to iterate over the query results step
 by step instead of loading the whole result into memory at once.
 The following example shows how to do this:
 
@@ -147,14 +145,13 @@ The following example shows how to do this:
     $batchSize = 20;
     $i = 1;
     $q = $em->createQuery('select u from MyProject\Model\User u');
-    $iterableResult = $q->iterate();
-    while (($row = $iterableResult->next()) !== false) {
-        $em->remove($row[0]);
+    foreach($q->toIterable() as $row) {
+        $em->remove($row);
+        ++$i;
         if (($i % $batchSize) === 0) {
             $em->flush(); // Executes all deletions.
             $em->clear(); // Detaches all objects from Doctrine!
         }
-        ++$i;
     }
     $em->flush();
 
@@ -168,20 +165,18 @@ The following example shows how to do this:
 Iterating Large Results for Data-Processing
 -------------------------------------------
 
-You can use the ``iterate()`` method just to iterate over a large
-result and no UPDATE or DELETE intention. The ``IterableResult``
-instance returned from ``$query->iterate()`` implements the
-Iterator interface so you can process a large result without memory
+You can use the ``toIterable()`` method just to iterate over a large
+result and no UPDATE or DELETE intention. ``$query->toIterable()`` returns ``iterable``
+so you can process a large result without memory
 problems using the following approach:
 
 .. code-block:: php
 
     <?php
     $q = $this->_em->createQuery('select u from MyProject\Model\User u');
-    $iterableResult = $q->iterate();
-    foreach ($iterableResult as $row) {
-        // do stuff with the data in the row, $row[0] is always the object
-    
+    foreach ($q->toIterable() as $row) {
+        // do stuff with the data in the row
+
         // detach from Doctrine, so that it can be Garbage-Collected immediately
         $this->_em->detach($row[0]);
     }

docs/en/reference/caching.rst

@@ -43,7 +43,7 @@ these methods.
 
 This documentation does not cover every single cache driver included
 with Doctrine. For an up-to-date-list, see the
-`cache directory on GitHub <https://github.com/doctrine/cache/tree/master/lib/Doctrine/Common/Cache>`_.
+`cache directory on GitHub <https://github.com/doctrine/cache/tree/2.8.x/lib/Doctrine/Common/Cache>`_.
 
 PhpFileCache
 ~~~~~~~~~~~~

docs/en/reference/change-tracking-policies.rst

@@ -30,7 +30,7 @@ Deferred Explicit
 
 The deferred explicit policy is similar to the deferred implicit
 policy in that it detects changes through a property-by-property
-comparison at commit time. The difference is that Doctrine 2 only
+comparison at commit time. The difference is that Doctrine ORM only
 considers entities that have been explicitly marked for change detection
 through a call to EntityManager#persist(entity) or through a save
 cascade. All other entities are skipped. This policy therefore
@@ -61,6 +61,11 @@ This policy can be configured as follows:
 Notify
 ~~~~~~
 
+.. note::
+
+    The notify change tracking policy is deprecated and will be removed in ORM 3.0.
+    (`Details <https://github.com/doctrine/orm/issues/8383>`_)
+
 This policy is based on the assumption that the entities notify
 interested listeners of changes to their properties. For that
 purpose, a class that wants to use this policy needs to implement

docs/en/reference/configuration.rst

@@ -112,8 +112,6 @@ You need to register your applications EntityManager to the console tool
 to make use of the tasks by creating a ``cli-config.php`` file with the
 following content:
 
-On Doctrine 2.4 and above:
-
 .. code-block:: php
 
     <?php
@@ -126,19 +124,3 @@ On Doctrine 2.4 and above:
     $entityManager = GetEntityManager();
 
     return ConsoleRunner::createHelperSet($entityManager);
-
-On Doctrine 2.3 and below:
-
-.. code-block:: php
-
-    <?php
-    // cli-config.php
-    require_once 'my_bootstrap.php';
-
-    // Any way to access the EntityManager from  your application
-    $em = GetMyEntityManager();
-
-    $helperSet = new \Symfony\Component\Console\Helper\HelperSet(array(
-        'db' => new \Doctrine\DBAL\Tools\Console\Helper\ConnectionHelper($em->getConnection()),
-        'em' => new \Doctrine\ORM\Tools\Console\Helper\EntityManagerHelper($em)
-    ));

docs/en/reference/dql-doctrine-query-language.rst

@@ -458,8 +458,6 @@ Get all users that have no phonenumber
 Get all instances of a specific type, for use with inheritance
 hierarchies:
 
-.. versionadded:: 2.1
-
 .. code-block:: php
 
     <?php
@@ -469,24 +467,20 @@ hierarchies:
 
 Get all users visible on a given website that have chosen certain gender:
 
-.. versionadded:: 2.2
-
 .. code-block:: php
 
     <?php
     $query = $em->createQuery('SELECT u FROM User u WHERE u.gender IN (SELECT IDENTITY(agl.gender) FROM Site s JOIN s.activeGenderList agl WHERE s.id = ?1)');
 
-.. versionadded:: 2.4
-
-Starting with 2.4, the IDENTITY() DQL function also works for composite primary keys:
+The IDENTITY() DQL function also works for composite primary keys
 
 .. code-block:: php
 
     <?php
     $query = $em->createQuery("SELECT IDENTITY(c.location, 'latitude') AS latitude, IDENTITY(c.location, 'longitude') AS longitude FROM Checkpoint c WHERE c.user = ?1");
 
-Joins between entities without associations were not possible until version
-2.4, where you can generate an arbitrary join with the following syntax:
+Joins between entities without associations are available,
+where you can generate an arbitrary join with the following syntax:
 
 .. code-block:: php
 
@@ -534,8 +528,6 @@ You use the partial syntax when joining as well:
 "NEW" Operator Syntax
 ^^^^^^^^^^^^^^^^^^^^^
 
-.. versionadded:: 2.4
-
 Using the ``NEW`` operator you can construct Data Transfer Objects (DTOs) directly from DQL queries.
 
 - When using ``SELECT NEW`` you don't need to specify a mapped entity.
@@ -611,6 +603,13 @@ then phonenumber-id:
               ...
           'nameUpper' => string 'JWAGE' (length=5)
 
+You can also index by a to-one association, which will use the id of
+the associated entity (the join column) as the key in the result set:
+
+.. code-block:: sql
+
+    SELECT p, u FROM Participant INDEX BY p.user JOIN p.user u WHERE p.event = 3
+
 UPDATE queries
 --------------
 
@@ -657,6 +656,16 @@ The same restrictions apply for the reference of related entities.
     of the query. Additionally Deletes of specified entities are *NOT*
     cascaded to related entities even if specified in the metadata.
 
+Comments in queries
+-------------------
+
+We can use comments with the SQL syntax of comments.
+
+.. code-block:: sql
+
+    SELECT u FROM MyProject\Model\User u
+    -- my comment
+    WHERE u.age > 20 -- comment at the end of a line
 
 Functions, Operators, Aggregates
 --------------------------------
@@ -900,7 +909,7 @@ Class Table Inheritance
 is an inheritance mapping strategy where each class in a hierarchy
 is mapped to several tables: its own table and the tables of all
 parent classes. The table of a child class is linked to the table
-of a parent class through a foreign key constraint. Doctrine 2
+of a parent class through a foreign key constraint. Doctrine ORM
 implements this strategy through the use of a discriminator column
 in the topmost table of the hierarchy because this is the easiest
 way to achieve polymorphic queries with Class Table Inheritance.
@@ -1368,7 +1377,8 @@ userland:
    that contain char or binary data. Doctrine has no way of implicitly
    reloading this data. Partially loaded objects have to be passed to
    ``EntityManager::refresh()`` if they are to be reloaded fully from
-   the database.
+   the database. This query hint is deprecated and will be removed
+   in the future (`Details <https://github.com/doctrine/orm/issues/8471>`_)
 -  Query::HINT\_REFRESH - This query is used internally by
    ``EntityManager::refresh()`` and can be used in userland as well.
    If you specify this hint and a query returns the data for an entity
@@ -1613,7 +1623,7 @@ From, Join and Index by
     RangeVariableDeclaration                   ::= AbstractSchemaName ["AS"] AliasIdentificationVariable
     JoinAssociationDeclaration                 ::= JoinAssociationPathExpression ["AS"] AliasIdentificationVariable [IndexBy]
     Join                                       ::= ["LEFT" ["OUTER"] | "INNER"] "JOIN" (JoinAssociationDeclaration | RangeVariableDeclaration) ["WITH" ConditionalExpression]
-    IndexBy                                    ::= "INDEX" "BY" StateFieldPathExpression
+    IndexBy                                    ::= "INDEX" "BY" SingleValuedPathExpression
 
 Select Expressions
 ~~~~~~~~~~~~~~~~~~

docs/en/reference/events.rst

@@ -1,7 +1,7 @@
 Events
 ======
 
-Doctrine 2 features a lightweight event system that is part of the
+Doctrine ORM features a lightweight event system that is part of the
 Common package. Doctrine uses it to dispatch system events, mainly
 :ref:`lifecycle events <reference-events-lifecycle-events>`.
 You can also use it for your own custom events.
@@ -70,7 +70,7 @@ method.
     <?php
     $evm->removeEventListener(array(self::preFoo, self::postFoo), $this);
 
-The Doctrine 2 event system also has a simple concept of event
+The Doctrine ORM event system also has a simple concept of event
 subscribers. We can define a simple ``TestEventSubscriber`` class
 which implements the ``\Doctrine\Common\EventSubscriber`` interface
 and implements a ``getSubscribedEvents()`` method which returns an
@@ -124,7 +124,7 @@ Now you can test the ``$eventSubscriber`` instance to see if the
 Naming convention
 ~~~~~~~~~~~~~~~~~
 
-Events being used with the Doctrine 2 EventManager are best named
+Events being used with the Doctrine ORM EventManager are best named
 with camelcase and the value of the corresponding constant should
 be the name of the constant itself, even with spelling. This has
 several reasons:
@@ -195,10 +195,10 @@ events during the life-time of their registered entities.
 
 .. warning::
 
-    Note that, when using ``Doctrine\ORM\AbstractQuery#iterate()``, ``postLoad``
+    Note that, when using ``Doctrine\ORM\AbstractQuery#toIterable()``, ``postLoad``
     events will be executed immediately after objects are being hydrated, and therefore
     associations are not guaranteed to be initialized. It is not safe to combine
-    usage of ``Doctrine\ORM\AbstractQuery#iterate()`` and ``postLoad`` event
+    usage of ``Doctrine\ORM\AbstractQuery#toIterable()`` and ``postLoad`` event
     handlers.
 
 .. warning::
@@ -221,7 +221,7 @@ These can be hooked into by two different types of event
 listeners:
 
 -  Lifecycle Callbacks are methods on the entity classes that are
-   called when the event is triggered. As of v2.4 they receive some kind
+   called when the event is triggered. They receive some kind
    of ``EventArgs`` instance.
 -  Lifecycle Event Listeners and Subscribers are classes with specific callback
    methods that receives some kind of ``EventArgs`` instance.
@@ -383,9 +383,7 @@ defined on your ``User`` model.
 Lifecycle Callbacks Event Argument
 -----------------------------------
 
-.. versionadded:: 2.4
-
-Since 2.4 the triggered event is given to the lifecycle-callback.
+The triggered event is also given to the lifecycle-callback.
 
 With the additional argument you have access to the
 ``EntityManager`` and ``UnitOfWork`` APIs inside these callback methods.
@@ -761,8 +759,6 @@ EntityManager.
 Entity listeners
 ----------------
 
-.. versionadded:: 2.4
-
 An entity listener is a lifecycle listener class used for an entity.
 
 - The entity listener's mapping may be applied to an entity class or mapped superclass.

docs/en/reference/faq.rst

@@ -80,7 +80,7 @@ You can solve this exception by:
 How can I filter an association?
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
-Natively you can't filter associations in 2.0 and 2.1. You should use DQL queries to query for the filtered set of entities.
+You should use DQL queries to query for the filtered set of entities.
 
 I call clear() on a One-To-Many collection but the entities are not deleted
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@@ -98,7 +98,7 @@ How can I add columns to a many-to-many table?
 
 The many-to-many association is only supporting foreign keys in the table definition
 To work with many-to-many tables containing extra columns you have to use the
-foreign keys as primary keys feature of Doctrine introduced in version 2.1.
+foreign keys as primary keys feature of Doctrine ORM.
 
 See :doc:`the tutorial on composite primary keys for more information<../tutorials/composite-primary-keys>`.
 
@@ -128,10 +128,10 @@ See the previous question for a solution to this task.
 Inheritance
 -----------
 
-Can I use Inheritance with Doctrine 2?
+Can I use Inheritance with Doctrine ORM?
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- 
-Yes, you can use Single- or Joined-Table Inheritance in Doctrine 2.
+
+Yes, you can use Single- or Joined-Table Inheritance in ORM.
 
 See the documentation chapter on :doc:`inheritance mapping <inheritance-mapping>` for
 the details.

docs/en/reference/filters.rst

@@ -1,9 +1,7 @@
 Filters
 =======
 
-.. versionadded:: 2.2
-
-Doctrine 2.2 features a filter system that allows the developer to add SQL to
+Doctrine ORM features a filter system that allows the developer to add SQL to
 the conditional clauses of queries, regardless the place where the SQL is
 generated (e.g. from a DQL query, or by loading associated entities).
 
@@ -55,6 +53,9 @@ proper quoting of parameters.
         }
     }
 
+If the parameter is an array and should be quoted as a list of values for an IN query
+this is possible with the alternative ``SQLFilter#setParameterList()`` and
+``SQLFilter#getParameterList()`` functions.
 
 Configuration
 -------------

docs/en/reference/improving-performance.rst

@@ -43,14 +43,36 @@ in scenarios where data is loaded for read-only purposes.
 Read-Only Entities
 ------------------
 
-Starting with Doctrine 2.1 you can mark entities as read only (See metadata mapping
-references for details). This means that the entity marked as read only is never considered
-for updates, which means when you call flush on the EntityManager these entities are skipped
-even if properties changed. Read-Only allows to persist new entities of a kind and remove existing
-ones, they are just not considered for updates.
+You can mark entities as read only (See metadata mapping
+references for details).
+
+This means that the entity marked as read only is never considered for updates.
+During flush on the EntityManager these entities are skipped even if properties
+changed.
+
+Read-Only allows to persist new entities of a kind and remove existing ones,
+they are just not considered for updates.
 
 See :ref:`annref_entity`
 
+You can also explicitly mark individual entities read only directly on the
+UnitOfWork via a call to ``markReadOnly()``:
+
+.. code-block:: php
+
+   $user = $entityManager->find(User::class, $id);
+   $entityManager->getUnitOfWork()->markReadOnly($user);
+
+Or you can set all objects that are the result of a query hydration to be
+marked as read only with the following query hint:
+
+.. code-block:: php
+
+   $query = $entityManager->createQuery('SELECT u FROM App\\Entity\\User u');
+   $query->setHint(Query::HINT_READ_ONLY, true);
+
+   $users = $query->getResult();
+
 Extra-Lazy Collections
 ----------------------
 

docs/en/reference/inheritance-mapping.rst

@@ -185,7 +185,7 @@ Class Table Inheritance
 is an inheritance mapping strategy where each class in a hierarchy
 is mapped to several tables: its own table and the tables of all
 parent classes. The table of a child class is linked to the table
-of a parent class through a foreign key constraint. Doctrine 2
+of a parent class through a foreign key constraint. Doctrine ORM
 implements this strategy through the use of a discriminator column
 in the topmost table of the hierarchy because this is the easiest
 way to achieve polymorphic queries with Class Table Inheritance.
@@ -274,6 +274,9 @@ be a leaf entity in the inheritance hierarchy, (ie. have no subclasses).
 Otherwise Doctrine *CANNOT* create proxy instances
 of this entity and will *ALWAYS* load the entity eagerly.
 
+There is also another important performance consideration that it is *NOT POSSIBLE* 
+to query for the base entity without any LEFT JOINs to the sub-types.
+
 SQL Schema considerations
 ~~~~~~~~~~~~~~~~~~~~~~~~~
 

docs/en/reference/limitations-and-known-issues.rst

@@ -6,7 +6,7 @@ Therefore we think it is very important to be honest about the
 current limitations to our users. Much like every other piece of
 software Doctrine2 is not perfect and far from feature complete.
 This section should give you an overview of current limitations of
-Doctrine 2 as well as critical known issues that you should know
+Doctrine ORM as well as critical known issues that you should know
 about.
 
 Current Limitations
@@ -107,7 +107,7 @@ to the same entity.
 Behaviors
 ~~~~~~~~~
 
-Doctrine 2 will **never** include a behavior system like Doctrine 1
+Doctrine ORM will **never** include a behavior system like Doctrine 1
 in the core library. We don't think behaviors add more value than
 they cost pain and debugging hell. Please see the many different
 blog posts we have written on this topics:
@@ -115,9 +115,9 @@ blog posts we have written on this topics:
 -  `Doctrine2 "Behaviors" in a Nutshell <http://www.doctrine-project.org/2010/02/17/doctrine2-behaviours-nutshell.html>`_
 -  `A re-usable Versionable behavior for Doctrine2 <http://www.doctrine-project.org/2010/02/24/doctrine2-versionable.html>`_
 -  `Write your own ORM on top of Doctrine2 <http://www.doctrine-project.org/2010/07/19/your-own-orm-doctrine2.html>`_
--  `Doctrine 2 Behavioral Extensions <http://www.doctrine-project.org/2010/11/18/doctrine2-behavioral-extensions.html>`_
+-  `Doctrine ORM Behavioral Extensions <http://www.doctrine-project.org/2010/11/18/doctrine2-behavioral-extensions.html>`_
 
-Doctrine 2 has enough hooks and extension points so that **you** can
+Doctrine ORM has enough hooks and extension points so that **you** can
 add whatever you want on top of it. None of this will ever become
 core functionality of Doctrine2 however, you will have to rely on
 third party extensions for magical behaviors.
@@ -126,9 +126,9 @@ Nested Set
 ~~~~~~~~~~
 
 NestedSet was offered as a behavior in Doctrine 1 and will not be
-included in the core of Doctrine 2. However there are already two
+included in the core of Doctrine ORM. However there are already two
 extensions out there that offer support for Nested Set with
-Doctrine 2:
+ORM:
 
 
 -  `Doctrine2 Hierarchical-Structural Behavior <http://github.com/guilhermeblanco/Doctrine2-Hierarchical-Structural-Behavior>`_
@@ -149,9 +149,9 @@ Identifier Quoting and Legacy Databases
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 For compatibility reasons between all the supported vendors and
-edge case problems Doctrine 2 does **NOT** do automatic identifier
+edge case problems Doctrine ORM does **NOT** do automatic identifier
 quoting. This can lead to problems when trying to get
-legacy-databases to work with Doctrine 2.
+legacy-databases to work with Doctrine ORM.
 
 
 -  You can quote column-names as described in the

docs/en/reference/metadata-drivers.rst

@@ -14,6 +14,7 @@ metadata:
 
 -  **XML files** (XmlDriver)
 -  **Class DocBlock Annotations** (AnnotationDriver)
+-  **Attributes** (AttributeDriver)
 -  **YAML files** (YamlDriver)
 -  **PHP Code in files or static functions** (PhpDriver)
 
@@ -147,7 +148,7 @@ ClassMetadata
 -------------
 
 The last piece you need to know and understand about metadata in
-Doctrine 2 is the API of the ``ClassMetadata`` classes. You need to
+Doctrine ORM is the API of the ``ClassMetadata`` classes. You need to
 be familiar with them in order to implement your own drivers but
 more importantly to retrieve mapping information for a certain
 entity when needed.

docs/en/reference/namingstrategy.rst

@@ -1,8 +1,6 @@
 Implementing a NamingStrategy
 ==============================
 
-.. versionadded:: 2.3
-
 Using a naming strategy you can provide rules for generating database identifiers,
 column or table names. This feature helps
 reduce the verbosity of the mapping document, eliminating repetitive noise (eg: ``TABLE_``).

docs/en/reference/native-sql.rst

@@ -71,7 +71,7 @@ with inheritance hierarchies.
 
     use Doctrine\ORM\Query\ResultSetMappingBuilder;
 
-    $sql = "SELECT u.id, u.name, a.id AS address_id, a.street, a.city " . 
+    $sql = "SELECT u.id, u.name, a.id AS address_id, a.street, a.city " .
            "FROM users u INNER JOIN address a ON u.address_id = a.id";
 
     $rsm = new ResultSetMappingBuilder($entityManager);
@@ -80,9 +80,7 @@ with inheritance hierarchies.
 
 The builder extends the ``ResultSetMapping`` class and as such has all the functionality of it as well.
 
-.. versionadded:: 2.4
-
-Starting with Doctrine ORM 2.4 you can generate the ``SELECT`` clause
+The ``SELECT`` clause can be generated
 from a ``ResultSetMappingBuilder``. You can either cast the builder
 object to ``(string)`` and the DQL aliases are used as SQL table aliases
 or use the ``generateSelectClause($tableAliases)`` method and pass
@@ -267,7 +265,7 @@ detail:
     <?php
     /**
      * Adds a meta column (foreign key or discriminator column) to the result set.
-     * 
+     *
      * @param string  $alias
      * @param string  $columnAlias
      * @param string  $columnName
@@ -322,10 +320,10 @@ entity.
     $rsm->addEntityResult('User', 'u');
     $rsm->addFieldResult('u', 'id', 'id');
     $rsm->addFieldResult('u', 'name', 'name');
-    
+
     $query = $this->_em->createNativeQuery('SELECT id, name FROM users WHERE name = ?', $rsm);
     $query->setParameter(1, 'romanb');
-    
+
     $users = $query->getResult();
 
 The result would look like this:
@@ -358,10 +356,10 @@ thus owns the foreign key.
     $rsm->addFieldResult('u', 'id', 'id');
     $rsm->addFieldResult('u', 'name', 'name');
     $rsm->addMetaResult('u', 'address_id', 'address_id');
-    
+
     $query = $this->_em->createNativeQuery('SELECT id, name, address_id FROM users WHERE name = ?', $rsm);
     $query->setParameter(1, 'romanb');
-    
+
     $users = $query->getResult();
 
 Foreign keys are used by Doctrine for lazy-loading purposes when
@@ -387,12 +385,12 @@ associations that are lazy.
     $rsm->addFieldResult('a', 'address_id', 'id');
     $rsm->addFieldResult('a', 'street', 'street');
     $rsm->addFieldResult('a', 'city', 'city');
-    
+
     $sql = 'SELECT u.id, u.name, a.id AS address_id, a.street, a.city FROM users u ' .
            'INNER JOIN address a ON u.address_id = a.id WHERE u.name = ?';
     $query = $this->_em->createNativeQuery($sql, $rsm);
     $query->setParameter(1, 'romanb');
-    
+
     $users = $query->getResult();
 
 In this case the nested entity ``Address`` is registered with the
@@ -422,10 +420,10 @@ to map the hierarchy (both use a discriminator column).
     $rsm->addFieldResult('u', 'name', 'name');
     $rsm->addMetaResult('u', 'discr', 'discr'); // discriminator column
     $rsm->setDiscriminatorColumn('u', 'discr');
-    
+
     $query = $this->_em->createNativeQuery('SELECT id, name, discr FROM users WHERE name = ?', $rsm);
     $query->setParameter(1, 'romanb');
-    
+
     $users = $query->getResult();
 
 Note that in the case of Class Table Inheritance, an example as
@@ -437,6 +435,10 @@ strategy but with native SQL it is your responsibility.
 Named Native Query
 ------------------
 
+.. note::
+
+    Named Native Queries are deprecated as of version 2.9 and will be removed in ORM 3.0
+
 You can also map a native query using a named native query mapping.
 
 To achieve that, you must describe the SQL resultset structure
@@ -791,7 +793,7 @@ followed by a dot ("."), followed by the name or the field or property of the pr
                     6:
                       name: address.country
                       column: a_country
-                    
+
 
 
 If you retrieve a single entity and if you use the default mapping,

docs/en/reference/partial-objects.rst

@@ -1,6 +1,14 @@
 Partial Objects
 ===============
 
+
+.. note::
+
+    Creating Partial Objects through DQL is deprecated and
+    will be removed in the future, use data transfer object
+    support in DQL instead. (`Details
+    <https://github.com/doctrine/orm/issues/8471>`_)
+
 A partial object is an object whose state is not fully initialized
 after being reconstituted from the database and that is
 disconnected from the rest of its data. The following section will

docs/en/reference/php-mapping.rst

@@ -1,7 +1,7 @@
 PHP Mapping
 ===========
 
-Doctrine 2 also allows you to provide the ORM metadata in the form
+Doctrine ORM also allows you to provide the ORM metadata in the form
 of plain PHP code using the ``ClassMetadata`` API. You can write
 the code in PHP files or inside of a static function named
 ``loadMetadata($class)`` on the entity class itself.

docs/en/reference/query-builder.rst

@@ -277,10 +277,17 @@ following syntax:
 .. code-block:: php
 
     <?php
+
+    use Doctrine\Common\Collections\ArrayCollection;
+    use Doctrine\ORM\Query\Parameter;
+    
     // $qb instanceof QueryBuilder
 
     // Query here...
-    $qb->setParameters(array(1 => 'value for ?1', 2 => 'value for ?2'));
+    $qb->setParameters(new ArrayCollection([
+        new Parameter('1', 'value for ?1'),
+        new Parameter('2', 'value for ?2')
+    ]));
 
 Getting already bound parameters is easy - simply use the above
 mentioned syntax with "getParameter()" or "getParameters()":
@@ -354,6 +361,7 @@ a querybuilder instance into a Query object:
 
     // Execute Query
     $result = $query->getResult();
+    $iterableResult = $query->toIterable();
     $single = $query->getSingleResult();
     $array = $query->getArrayResult();
     $scalar = $query->getScalarResult();
@@ -512,6 +520,9 @@ complete list of supported helper methods available:
         // Example - $qb->expr()->sqrt('u.currentBalance')
         public function sqrt($x); // Returns Expr\Func
 
+        // Example - $qb->expr()->mod('u.currentBalance', '10')
+        public function mod($x); // Returns Expr\Func
+
         // Example - $qb->expr()->count('u.firstname')
         public function count($x); // Returns Expr\Func
 

docs/en/reference/tools.rst

@@ -5,7 +5,7 @@ Doctrine Console
 ----------------
 
 The Doctrine Console is a Command Line Interface tool for simplifying common
-administration tasks during the development of a project that uses Doctrine 2.
+administration tasks during the development of a project that uses ORM.
 
 Take a look at the :doc:`Installation and Configuration <configuration>`
 chapter for more information how to setup the console command.
@@ -27,64 +27,34 @@ Configuration
 ~~~~~~~~~~~~~
 
 Whenever the ``doctrine`` command line tool is invoked, it can
-access all Commands that were registered by developer. There is no
+access all Commands that were registered by a developer. There is no
 auto-detection mechanism at work. The Doctrine binary
 already registers all the commands that currently ship with
 Doctrine DBAL and ORM. If you want to use additional commands you
 have to register them yourself.
 
-All the commands of the Doctrine Console require access to the ``EntityManager``
-or ``DBAL`` Connection. You have to inject them into the console application
-using so called Helper-Sets. This requires either the ``db``
-or the ``em`` helpers to be defined in order to work correctly.
+All the commands of the Doctrine Console require access to the
+``EntityManager``. You have to inject it into the console application with
+``ConsoleRunner::createHelperSet``. Whenever you invoke the Doctrine
+binary, it searches the current directory for the file ``cli-config.php``.
+This file contains the project-specific configuration.
 
-Whenever you invoke the Doctrine binary the current folder is searched for a
-``cli-config.php`` file. This file contains the project specific configuration:
+Here is an example of a the project-specific ``cli-config.php``:
 
 .. code-block:: php
 
     <?php
-    $helperSet = new \Symfony\Component\Console\Helper\HelperSet(array(
-        'db' => new \Doctrine\DBAL\Tools\Console\Helper\ConnectionHelper($conn)
-    ));
-    $cli->setHelperSet($helperSet);
+    use Doctrine\ORM\Tools\Console\ConsoleRunner;
 
-When dealing with the ORM package, the EntityManagerHelper is
-required:
+    // replace this with the path to your own project bootstrap file.
+    require_once 'bootstrap.php';
 
-.. code-block:: php
+    // replace with mechanism to retrieve EntityManager in your app
+    $entityManager = GetEntityManager();
 
-    <?php
-    $helperSet = new \Symfony\Component\Console\Helper\HelperSet(array(
-        'em' => new \Doctrine\ORM\Tools\Console\Helper\EntityManagerHelper($em)
-    ));
-    $cli->setHelperSet($helperSet);
+    return ConsoleRunner::createHelperSet($entityManager);
 
-The HelperSet instance has to be generated in a separate file (i.e.
-``cli-config.php``) that contains typical Doctrine bootstrap code
-and predefines the needed HelperSet attributes mentioned above. A
-sample ``cli-config.php`` file looks as follows:
-
-.. code-block:: php
-
-    <?php
-    // cli-config.php
-    require_once 'my_bootstrap.php';
-
-    // Any way to access the EntityManager from  your application
-    $em = GetMyEntityManager();
-    
-    $helperSet = new \Symfony\Component\Console\Helper\HelperSet(array(
-        'db' => new \Doctrine\DBAL\Tools\Console\Helper\ConnectionHelper($em->getConnection()),
-        'em' => new \Doctrine\ORM\Tools\Console\Helper\EntityManagerHelper($em)
-    ));
-
-It is important to define a correct HelperSet that Doctrine binary
-script will ultimately use. The Doctrine Binary will automatically
-find the first instance of HelperSet in the global variable
-namespace and use this.
-
-.. note:: 
+.. note::
 
     You have to adjust this snippet for your specific application or framework
     and use their facilities to access the Doctrine EntityManager and
@@ -375,7 +345,7 @@ First you need to retrieve the metadata instances with the
             $em->getConnection()->getSchemaManager()
         )
     );
-    
+
     $cmf = new \Doctrine\ORM\Tools\DisconnectedClassMetadataFactory();
     $cmf->setEntityManager($em);
     $metadata = $cmf->getAllMetadata();
@@ -412,7 +382,7 @@ You can also reverse engineer a database using the
 Runtime vs Development Mapping Validation
 -----------------------------------------
 
-For performance reasons Doctrine 2 has to skip some of the
+For performance reasons Doctrine ORM has to skip some of the
 necessary validation of metadata mappings. You have to execute
 this validation in your development workflow to verify the
 associations are correctly defined.
@@ -517,4 +487,3 @@ HelperSet, like it is described in the configuration section.
 
     // Runs console application
     $cli->run();
-

docs/en/reference/transactions-and-concurrency.rst

@@ -16,13 +16,13 @@ transaction. Without any explicit transaction demarcation from your
 side, this quickly results in poor performance because transactions
 are not cheap.
 
-For the most part, Doctrine 2 already takes care of proper
+For the most part, Doctrine ORM already takes care of proper
 transaction demarcation for you: All the write operations
 (INSERT/UPDATE/DELETE) are queued until ``EntityManager#flush()``
 is invoked which wraps all of these changes in a single
 transaction.
 
-However, Doctrine 2 also allows (and encourages) you to take over
+However, Doctrine ORM also allows (and encourages) you to take over
 and control transaction demarcation yourself.
 
 These are two ways to deal with transactions when using the
@@ -154,7 +154,7 @@ occurred you should do that with a new ``EntityManager``.
 Locking Support
 ---------------
 
-Doctrine 2 offers support for Pessimistic- and Optimistic-locking
+Doctrine ORM offers support for Pessimistic- and Optimistic-locking
 strategies natively. This allows to take very fine-grained control
 over what kind of locking is required for your Entities in your
 application.
@@ -367,7 +367,7 @@ And the change headline action (POST Request):
 Pessimistic Locking
 ~~~~~~~~~~~~~~~~~~~
 
-Doctrine 2 supports Pessimistic Locking at the database level. No
+Doctrine ORM supports Pessimistic Locking at the database level. No
 attempt is being made to implement pessimistic locking inside
 Doctrine, rather vendor-specific and ANSI-SQL commands are used to
 acquire row-level locks. Every Entity can be part of a pessimistic
@@ -376,11 +376,11 @@ lock, there is no special metadata required to use this feature.
 However for Pessimistic Locking to work you have to disable the
 Auto-Commit Mode of your Database and start a transaction around
 your pessimistic lock use-case using the "Approach 2: Explicit
-Transaction Demarcation" described above. Doctrine 2 will throw an
+Transaction Demarcation" described above. Doctrine ORM will throw an
 Exception if you attempt to acquire an pessimistic lock and no
 transaction is running.
 
-Doctrine 2 currently supports two pessimistic lock modes:
+Doctrine ORM currently supports two pessimistic lock modes:
 
 
 -  Pessimistic Write

docs/en/reference/unitofwork.rst

@@ -134,6 +134,10 @@ optimize the performance of the Flush Operation:
   explicit strategies of notifying the UnitOfWork what objects/properties
   changed.
 
+.. note::
+
+    Flush only a single entity with ``$entityManager->flush($entity)`` is deprecated and will be removed in ORM 3.0.
+    (`Details <https://github.com/doctrine/orm/issues/8459>`_)
 
 Query Internals
 ---------------

docs/en/reference/working-with-associations.rst

@@ -407,7 +407,7 @@ There are two approaches to handle this problem in your code:
 Transitive persistence / Cascade Operations
 -------------------------------------------
 
-Doctrine 2 provides a mechanism for transitive persistence through cascading of certain operations.
+Doctrine ORM provides a mechanism for transitive persistence through cascading of certain operations.
 Each association to another entity or a collection of
 entities can be configured to automatically cascade the following operations to the associated entities:
 ``persist``, ``remove``, ``merge``, ``detach``, ``refresh`` or ``all``.

docs/en/reference/working-with-objects.rst

@@ -27,7 +27,7 @@ Work that have not yet been persisted are lost.
 
 .. note::
 
-    Doctrine does NEVER touch the public API of methods in your entity 
+    Doctrine does NEVER touch the public API of methods in your entity
     classes (like getters and setters) nor the constructor method.
     Instead, it uses reflection to get/set data from/to your entity objects.
     When Doctrine fetches data from DB and saves it back,
@@ -48,12 +48,12 @@ headline "Hello World" with the ID 1234:
     <?php
     $article = $entityManager->find('CMS\Article', 1234);
     $article->setHeadline('Hello World dude!');
-    
+
     $article2 = $entityManager->find('CMS\Article', 1234);
     echo $article2->getHeadline();
 
 In this case the Article is accessed from the entity manager twice,
-but modified in between. Doctrine 2 realizes this and will only
+but modified in between. Doctrine ORM realizes this and will only
 ever give you access to one instance of the Article with ID 1234,
 no matter how often do you retrieve it from the EntityManager and
 even no matter what kind of Query method you are using (find,
@@ -100,25 +100,25 @@ from newly opened EntityManager.
     {
         /** @Id @Column(type="integer") @GeneratedValue */
         private $id;
-    
+
         /** @Column(type="string") */
         private $headline;
-    
+
         /** @ManyToOne(targetEntity="User") */
         private $author;
-    
+
         /** @OneToMany(targetEntity="Comment", mappedBy="article") */
         private $comments;
-    
+
         public function __construct()
         {
             $this->comments = new ArrayCollection();
         }
-    
+
         public function getAuthor() { return $this->author; }
         public function getComments() { return $this->comments; }
     }
-    
+
     $article = $em->find('Article', 1);
 
 This code only retrieves the ``Article`` instance with id 1 executing
@@ -139,22 +139,22 @@ your code. See the following code:
 
     <?php
     $article = $em->find('Article', 1);
-    
+
     // accessing a method of the user instance triggers the lazy-load
     echo "Author: " . $article->getAuthor()->getName() . "\n";
-    
+
     // Lazy Loading Proxies pass instanceof tests:
     if ($article->getAuthor() instanceof User) {
         // a User Proxy is a generated "UserProxy" class
     }
-    
+
     // accessing the comments as an iterator triggers the lazy-load
     // retrieving ALL the comments of this article from the database
     // using a single SELECT statement
     foreach ($article->getComments() as $comment) {
         echo $comment->getText() . "\n\n";
     }
-    
+
     // Article::$comments passes instanceof tests for the Collection interface
     // But it will NOT pass for the ArrayCollection interface
     if ($article->getComments() instanceof \Doctrine\Common\Collections\Collection) {
@@ -174,7 +174,7 @@ methods along the lines of the ``getName()`` method shown below:
         {
             // lazy loading code
         }
-    
+
         public function getName()
         {
             $this->_load();
@@ -275,7 +275,7 @@ which means that its persistent state will be deleted once
     for and appear in query and collection results. See
     the section on :ref:`Database and UnitOfWork Out-Of-Sync <workingobjects_database_uow_outofsync>`
     for more information.
-    
+
 
 Example:
 
@@ -318,7 +318,7 @@ Deleting an object with all its associated objects can be achieved
 in multiple ways with very different performance impacts.
 
 
-1. If an association is marked as ``CASCADE=REMOVE`` Doctrine 2
+1. If an association is marked as ``CASCADE=REMOVE`` Doctrine ORM
    will fetch this association. If its a Single association it will
    pass this entity to
    ``EntityManager#remove()``. If the association is a collection, Doctrine will loop over all    its elements and pass them to``EntityManager#remove()``.
@@ -653,7 +653,7 @@ just created via the "new" operator).
 Querying
 --------
 
-Doctrine 2 provides the following ways, in increasing level of
+Doctrine ORM provides the following ways, in increasing level of
 power and flexibility, to query for persistent objects. You should
 always start with the simplest one that suits your needs.
 
@@ -700,13 +700,13 @@ methods on a repository as follows:
 
     <?php
     // $em instanceof EntityManager
-    
+
     // All users that are 20 years old
     $users = $em->getRepository('MyProject\Domain\User')->findBy(array('age' => 20));
-    
+
     // All users that are 20 years old and have a surname of 'Miller'
     $users = $em->getRepository('MyProject\Domain\User')->findBy(array('age' => 20, 'surname' => 'Miller'));
-    
+
     // A single user by its nickname
     $user = $em->getRepository('MyProject\Domain\User')->findOneBy(array('nickname' => 'romanb'));
 
@@ -742,7 +742,7 @@ examples are equivalent:
     <?php
     // A single user by its nickname
     $user = $em->getRepository('MyProject\Domain\User')->findOneBy(array('nickname' => 'romanb'));
-    
+
     // A single user by its nickname (__call magic)
     $user = $em->getRepository('MyProject\Domain\User')->findOneByNickname('romanb');
 
@@ -757,8 +757,6 @@ Additionally, you can just count the result of the provided conditions when you
 By Criteria
 ~~~~~~~~~~~
 
-.. versionadded:: 2.3
-
 The Repository implement the ``Doctrine\Common\Collections\Selectable``
 interface. That means you can build ``Doctrine\Common\Collections\Criteria``
 and pass them to the ``matching($criteria)`` method.
@@ -800,7 +798,7 @@ A DQL query is represented by an instance of the
 
     <?php
     // $em instanceof EntityManager
-    
+
     // All users with an age between 20 and 30 (inclusive).
     $q = $em->createQuery("select u from MyDomain\Model\User u where u.age >= 20 and u.age <= 30");
     $users = $q->getResult();
@@ -845,18 +843,18 @@ in a central location.
 
     <?php
     namespace MyDomain\Model;
-    
+
     use Doctrine\ORM\EntityRepository;
     use Doctrine\ORM\Mapping as ORM;
-    
+
     /**
      * @ORM\Entity(repositoryClass="MyDomain\Model\UserRepository")
      */
     class User
     {
-    
+
     }
-    
+
     class UserRepository extends EntityRepository
     {
         public function getAllAdminUsers()
@@ -872,7 +870,7 @@ You can access your repository now by calling:
 
     <?php
     // $em instanceof EntityManager
-    
+
     $admins = $em->getRepository('MyDomain\Model\User')->getAllAdminUsers();
 
 

docs/en/reference/xml-mapping.rst

@@ -8,9 +8,7 @@ The XML driver is backed by an XML Schema document that describes
 the structure of a mapping document. The most recent version of the
 XML Schema document is available online at
 `https://www.doctrine-project.org/schemas/orm/doctrine-mapping.xsd <https://www.doctrine-project.org/schemas/orm/doctrine-mapping.xsd>`_.
-In order to point to the latest version of the document of a
-particular stable release branch, just append the release number,
-i.e.: doctrine-mapping-2.0.xsd The most convenient way to work with
+The most convenient way to work with
 XML mapping files is to use an IDE/editor that can provide
 code-completion based on such an XML Schema document. The following
 is an outline of a XML mapping document with the proper xmlns/xsi
@@ -208,10 +206,10 @@ Optional attributes:
 -  **inheritance-type** - The type of inheritance, defaults to none. A
    more detailed description follows in the
    *Defining Inheritance Mappings* section.
--  **read-only** - (>= 2.1) Specifies that this entity is marked as read only and not
+-  **read-only** - Specifies that this entity is marked as read only and not
    considered for change-tracking. Entities of this type can be persisted
    and removed though.
--  **schema** - (>= 2.5) The schema the table lies in, for platforms that support schemas
+-  **schema** - The schema the table lies in, for platforms that support schemas
 
 Defining Fields
 ~~~~~~~~~~~~~~~
@@ -293,7 +291,7 @@ Defining Identity and Generator Strategies
 
 An entity has to have at least one ``<id />`` element. For
 composite keys you can specify more than one id-element, however
-surrogate keys are recommended for use with Doctrine 2. The Id
+surrogate keys are recommended for use with Doctrine ORM. The Id
 field allows to define properties of the identifier and allows a
 subset of the ``<field />`` element attributes:
 

docs/en/tutorials/composite-primary-keys.rst

@@ -1,11 +1,9 @@
 Composite and Foreign Keys as Primary Key
 =========================================
 
-.. versionadded:: 2.1
-
-Doctrine 2 supports composite primary keys natively. Composite keys are a very powerful relational database concept
-and we took good care to make sure Doctrine 2 supports as many of the composite primary key use-cases.
-For Doctrine 2.0 composite keys of primitive data-types are supported, for Doctrine 2.1 even foreign keys as
+Doctrine ORM supports composite primary keys natively. Composite keys are a very powerful relational database concept
+and we took good care to make sure Doctrine ORM supports as many of the composite primary key use-cases.
+For Doctrine ORM composite keys of primitive data-types are supported, even foreign keys as
 primary keys are supported.
 
 This tutorial shows how the semantics of composite primary keys work and how they map to the database.
@@ -19,7 +17,7 @@ the ID fields have to have their values set before you call ``EntityManager#pers
 Primitive Types only
 ~~~~~~~~~~~~~~~~~~~~
 
-Even in version 2.0 you can have composite keys as long as they only consist of the primitive types
+You can have composite keys as long as they only consist of the primitive types
 ``integer`` and ``string``. Suppose you want to create a database of cars and use the model-name
 and year of production as primary keys:
 
@@ -120,10 +118,6 @@ and to ``year`` to the related entities.
 Identity through foreign Entities
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
-.. note::
-
-    Identity through foreign entities is only supported with Doctrine 2.1
-
 There are tons of use-cases where the identity of an Entity should be determined by the entity
 of one or many parent entities.
 

docs/en/tutorials/extra-lazy-associations.rst

@@ -3,21 +3,21 @@ Extra Lazy Associations
 
 .. versionadded:: 2.1
 
-In many cases associations between entities can get pretty large. Even in a simple scenario like a blog
+In many cases associations between entities can get pretty large. Even in a simple scenario like a blog.
 where posts can be commented, you always have to assume that a post draws hundreds of comments.
-In Doctrine 2.0 if you accessed an association it would always get loaded completely into memory. This
+In Doctrine ORM if you accessed an association it would always get loaded completely into memory. This
 can lead to pretty serious performance problems, if your associations contain several hundreds or thousands
 of entities.
 
-With Doctrine 2.1 a feature called **Extra Lazy** is introduced for associations. Associations
+Doctrine ORM includes a feature called **Extra Lazy** for associations. Associations
 are marked as **Lazy** by default, which means the whole collection object for an association is populated
 the first time its accessed. If you mark an association as extra lazy the following methods on collections
 can be called without triggering a full load of the collection:
 
 -  ``Collection#contains($entity)``
--  ``Collection#containsKey($key)`` (available with Doctrine 2.5)
+-  ``Collection#containsKey($key)``
 -  ``Collection#count()``
--  ``Collection#get($key)``  (available with Doctrine 2.4)
+-  ``Collection#get($key)``
 -  ``Collection#slice($offset, $length = null)``
 
 For each of the above methods the following semantics apply:
@@ -25,7 +25,7 @@ For each of the above methods the following semantics apply:
 -  For each call, if the Collection is not yet loaded, issue a straight SELECT statement against the database.
 -  For each call, if the collection is already loaded, fallback to the default functionality for lazy collections. No additional SELECT statements are executed.
 
-Additionally even with Doctrine 2.0 the following methods do not trigger the collection load:
+Additionally even with Doctrine ORM the following methods do not trigger the collection load:
 
 -  ``Collection#add($entity)``
 -  ``Collection#offsetSet($key, $entity)`` - ArrayAccess with no specific key ``$coll[] = $entity``, it does

docs/en/tutorials/getting-started-database.rst

@@ -20,8 +20,7 @@ development is said to use the *Database First* approach to Doctrine.
 
 In this workflow you would modify the database schema first and then
 regenerate the PHP code to use with this schema. You need a flexible
-code-generator for this task and up to Doctrine 2.2, the code generator hasn't
-been flexible enough to achieve this.
+code-generator for this task.
 
 We spinned off a subproject, Doctrine CodeGenerator, that will fill this gap and
 allow you to do *Database First* development.

docs/en/tutorials/getting-started.rst

@@ -23,15 +23,10 @@ installed:
 
 The code of this tutorial is `available on Github <https://github.com/doctrine/doctrine2-orm-tutorial>`_.
 
-.. note::
-
-    This tutorial assumes you work with **Doctrine 2.6** and above.
-    Some of the code will not work with lower versions.
-
 What is Doctrine?
 -----------------
 
-Doctrine 2 is an `object-relational mapper (ORM) <https://en.wikipedia.org/wiki/Object-relational_mapping>`_
+Doctrine ORM is an `object-relational mapper (ORM) <https://en.wikipedia.org/wiki/Object-relational_mapping>`_
 for PHP 7.1+ that provides transparent persistence for PHP objects. It uses the Data Mapper
 pattern at the heart, aiming for a complete separation of your domain/business
 logic from the persistence in a relational database management system.
@@ -123,7 +118,7 @@ Obtaining the EntityManager
 Doctrine's public interface is through the ``EntityManager``. This class
 provides access points to the complete lifecycle management for your entities,
 and transforms entities from and back to persistence. You have to
-configure and create it to use your entities with Doctrine 2. I
+configure and create it to use your entities with Doctrine ORM. I
 will show the configuration steps and then discuss them step by
 step:
 
@@ -133,9 +128,9 @@ step:
     // bootstrap.php
     use Doctrine\ORM\Tools\Setup;
     use Doctrine\ORM\EntityManager;
-    
+
     require_once "vendor/autoload.php";
-    
+
     // Create a simple "default" Doctrine ORM configuration for Annotations
     $isDevMode = true;
     $proxyDir = null;
@@ -145,13 +140,13 @@ step:
     // or if you prefer yaml or XML
     //$config = Setup::createXMLMetadataConfiguration(array(__DIR__."/config/xml"), $isDevMode);
     //$config = Setup::createYAMLMetadataConfiguration(array(__DIR__."/config/yaml"), $isDevMode);
-    
+
     // database configuration parameters
     $conn = array(
         'driver' => 'pdo_sqlite',
         'path' => __DIR__ . '/db.sqlite',
     );
-    
+
     // obtaining the entity manager
     $entityManager = EntityManager::create($conn, $config);
 
@@ -193,7 +188,7 @@ defined entity classes and their metadata. For this tool to work, a
     <?php
     // cli-config.php
     require_once "bootstrap.php";
-    
+
     return \Doctrine\ORM\Tools\Console\ConsoleRunner::createHelperSet($entityManager);
 
 Now call the Doctrine command-line tool:
@@ -299,14 +294,14 @@ but you only need to choose one.
          */
         class Product
         {
-            /** 
+            /**
              * @ORM\Id
              * @ORM\Column(type="integer")
              * @ORM\GeneratedValue
              */
             protected $id;
-            /** 
-             * @ORM\Column(type="string") 
+            /**
+             * @ORM\Column(type="string")
              */
             protected $name;
 
@@ -488,6 +483,7 @@ classes. We'll store them in ``src/Bug.php`` and ``src/User.php``, respectively.
     use Doctrine\ORM\Mapping as ORM;
 
     /**
+     * @ORM\Entity
      * @ORM\Table(name="bugs")
      */
     class Bug
@@ -562,7 +558,7 @@ classes. We'll store them in ``src/Bug.php`` and ``src/User.php``, respectively.
     use Doctrine\ORM\Mapping as ORM;
 
     /**
-     * @ORM\Entity 
+     * @ORM\Entity
      * @ORM\Table(name="users")
      */
     class User
@@ -610,7 +606,7 @@ foreign keys through their own identities.
 For every foreign key you either have a Doctrine ManyToOne or OneToOne
 association. On the inverse sides of these foreign keys you can have
 OneToMany associations. Obviously you can have ManyToMany associations
-that connect two tables with each other through a join table with 
+that connect two tables with each other through a join table with
 two foreign keys.
 
 Now that you know the basics about references in Doctrine, we can extend the
@@ -666,12 +662,12 @@ domain model to match the requirements:
 
     Lazy load proxies always contain an instance of
     Doctrine's EntityManager and all its dependencies. Therefore a
-    var\_dump() will possibly dump a very large recursive structure
+    ``var_dump()`` will possibly dump a very large recursive structure
     which is impossible to render and read. You have to use
     ``Doctrine\Common\Util\Debug::dump()`` to restrict the dumping to a
     human readable level. Additionally you should be aware that dumping
     the EntityManager to a Browser may take several minutes, and the
-    Debug::dump() method just ignores any occurrences of it in Proxy
+    ``Debug::dump()`` method just ignores any occurrences of it in Proxy
     instances.
 
 Because we only work with collections for the references we must be
@@ -679,8 +675,8 @@ careful to implement a bidirectional reference in the domain model.
 The concept of owning or inverse side of a relation is central to
 this notion and should always be kept in mind. The following
 assumptions are made about relations and have to be followed to be
-able to work with Doctrine 2. These assumptions are not unique to
-Doctrine 2 but are best practices in handling database relations
+able to work with Doctrine ORM. These assumptions are not unique to
+Doctrine ORM but are best practices in handling database relations
 and Object-Relational Mapping.
 
 -  In a one-to-one relation, the entity holding the foreign key of
@@ -832,14 +828,14 @@ the ``Product`` before:
         use Doctrine\ORM\Mapping as ORM;
 
         /**
-         * @ORM\Entity 
+         * @ORM\Entity
          * @ORM\Table(name="bugs")
          */
         class Bug
         {
             /**
-             * @ORM\Id 
-             * @ORM\Column(type="integer") 
+             * @ORM\Id
+             * @ORM\Column(type="integer")
              * @ORM\GeneratedValue
              */
             protected $id;
@@ -936,8 +932,8 @@ the ``Product`` before:
 
 
 Here we have the entity, id and primitive type definitions.
-For the "created" field we have used the ``datetime`` type, 
-which translates the YYYY-mm-dd HH:mm:ss database format 
+For the "created" field we have used the ``datetime`` type,
+which translates the YYYY-mm-dd HH:mm:ss database format
 into a PHP DateTime instance and back.
 
 After the field definitions, the two qualified references to the
@@ -975,8 +971,8 @@ Finally, we'll add metadata mappings for the ``User`` entity.
         class User
         {
             /**
-             * @ORM\Id 
-             * @ORM\GeneratedValue 
+             * @ORM\Id
+             * @ORM\GeneratedValue
              * @ORM\Column(type="integer")
              * @var int
              */
@@ -1215,10 +1211,10 @@ The console output of this script is then:
 
 
     As a last resort you can still use Native SQL and a description of the
-    result set to retrieve entities from the database. DQL boils down to a 
-    Native SQL statement and a ``ResultSetMapping`` instance itself. Using 
-    Native SQL you could even use stored procedures for data retrieval, or 
-    make use of advanced non-portable database queries like PostgreSql's 
+    result set to retrieve entities from the database. DQL boils down to a
+    Native SQL statement and a ``ResultSetMapping`` instance itself. Using
+    Native SQL you could even use stored procedures for data retrieval, or
+    make use of advanced non-portable database queries like PostgreSql's
     recursive queries.
 
 
@@ -1231,7 +1227,7 @@ objects only from Doctrine however. For a simple list view like the
 previous one we only need read access to our entities and can
 switch the hydration from objects to simple PHP arrays instead.
 
-Hydration can be an expensive process so only retrieving what you need can 
+Hydration can be an expensive process so only retrieving what you need can
 yield considerable performance benefits for read-only requests.
 
 Implementing the same list view as before using array hydration we

docs/en/tutorials/pagination.rst

@@ -1,9 +1,7 @@
 Pagination
 ==========
 
-.. versionadded:: 2.2
-
-Starting with version 2.2 Doctrine ships with a Paginator for DQL queries. It
+Doctrine ORM ships with a Paginator for DQL queries. It
 has a very simple API and implements the SPL interfaces ``Countable`` and
 ``IteratorAggregate``.
 

docs/en/tutorials/working-with-indexed-associations.rst

@@ -1,13 +1,9 @@
 Working with Indexed Associations
 =================================
 
-.. note::
-
-    This feature is available from version 2.1 of Doctrine.
-
-Doctrine 2 collections are modelled after PHPs native arrays. PHP arrays are an ordered hashmap, but in
+Doctrine ORM collections are modelled after PHPs native arrays. PHP arrays are an ordered hashmap, but in
 the first version of Doctrine keys retrieved from the database were always numerical unless ``INDEX BY``
-was used. Starting with Doctrine 2.1 you can index your collections by a value in the related entity.
+was used. You can index your collections by a value in the related entity.
 This is a first step towards full ordered hashmap support through the Doctrine ORM.
 The feature works like an implicit ``INDEX BY`` for the selected association but has several
 downsides also:

doctrine-mapping.xsd

@@ -309,7 +309,7 @@
 
   <xs:complexType name="embedded">
     <xs:attribute name="name" type="xs:string" use="required" />
-    <xs:attribute name="class" type="orm:fqcn" use="required" />
+    <xs:attribute name="class" type="orm:fqcn" use="optional" />
     <xs:attribute name="column-prefix" type="xs:string" use="optional" />
     <xs:attribute name="use-column-prefix" type="xs:boolean" default="true" use="optional" />
   </xs:complexType>
@@ -332,7 +332,8 @@
       <xs:any minOccurs="0" maxOccurs="unbounded" namespace="##other"/>
     </xs:sequence>
     <xs:attribute name="name" type="xs:NMTOKEN" use="optional"/>
-    <xs:attribute name="columns" type="xs:string" use="required"/>
+    <xs:attribute name="columns" type="xs:string" use="optional"/>
+    <xs:attribute name="fields" type="xs:string" use="optional"/>
     <xs:anyAttribute namespace="##other"/>
   </xs:complexType>
 
@@ -351,6 +352,7 @@
     </xs:sequence>
     <xs:attribute name="name" type="xs:NMTOKEN" use="optional"/>
     <xs:attribute name="columns" type="xs:string" use="required"/>
+    <xs:attribute name="fields" type="xs:string" use="optional"/>
     <xs:attribute name="flags" type="xs:string" use="optional"/>
     <xs:anyAttribute namespace="##other"/>
   </xs:complexType>
@@ -539,7 +541,7 @@
       <xs:any minOccurs="0" maxOccurs="unbounded" namespace="##other"/>
     </xs:sequence>
     <xs:attribute name="field" type="xs:NMTOKEN" use="required" />
-    <xs:attribute name="target-entity" type="xs:string" use="required" />
+    <xs:attribute name="target-entity" type="xs:string" />
     <xs:attribute name="inversed-by" type="xs:NMTOKEN" />
     <xs:attribute name="fetch" type="orm:fetch-type" default="LAZY" />
     <xs:anyAttribute namespace="##other"/>
@@ -557,7 +559,7 @@
       <xs:any minOccurs="0" maxOccurs="unbounded" namespace="##other"/>
     </xs:sequence>
     <xs:attribute name="field" type="xs:NMTOKEN" use="required" />
-    <xs:attribute name="target-entity" type="xs:string" use="required" />
+    <xs:attribute name="target-entity" type="xs:string" />
     <xs:attribute name="mapped-by" type="xs:NMTOKEN" />
     <xs:attribute name="inversed-by" type="xs:NMTOKEN" />
     <xs:attribute name="fetch" type="orm:fetch-type" default="LAZY" />

lib/Doctrine/ORM/AbstractQuery.php

@@ -1,4 +1,5 @@
 <?php
+
 /*
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
@@ -19,25 +20,41 @@
 
 namespace Doctrine\ORM;
 
-use Doctrine\Common\Util\ClassUtils;
-use Doctrine\Common\Collections\Collection;
+use Countable;
 use Doctrine\Common\Collections\ArrayCollection;
+use Doctrine\Common\Collections\Collection;
 use Doctrine\DBAL\Cache\QueryCacheProfile;
+use Doctrine\DBAL\Driver\ResultStatement;
+use Doctrine\Deprecations\Deprecation;
+use Doctrine\ORM\Cache\Logging\CacheLogger;
+use Doctrine\ORM\Cache\QueryCacheKey;
+use Doctrine\ORM\Cache\TimestampCacheKey;
+use Doctrine\ORM\Internal\Hydration\IterableResult;
 use Doctrine\ORM\Mapping\MappingException as ORMMappingException;
 use Doctrine\ORM\Query\Parameter;
-use Doctrine\ORM\Cache\QueryCacheKey;
+use Doctrine\ORM\Query\QueryException;
+use Doctrine\ORM\Query\ResultSetMapping;
 use Doctrine\Persistence\Mapping\MappingException;
+use Traversable;
+
+use function array_map;
+use function array_shift;
+use function count;
+use function is_array;
+use function is_numeric;
+use function is_object;
+use function is_scalar;
+use function iterator_count;
+use function iterator_to_array;
+use function ksort;
+use function reset;
+use function serialize;
+use function sha1;
 
 /**
  * Base contract for ORM queries. Base class for Query and NativeQuery.
  *
  * @link    www.doctrine-project.org
- * @since   2.0
- * @author  Benjamin Eberlei <kontakt@beberlei.de>
- * @author  Guilherme Blanco <guilhermeblanco@hotmail.com>
- * @author  Jonathan Wage <jonwage@gmail.com>
- * @author  Roman Borschel <roman@code-factory.org>
- * @author  Konsta Vesterinen <kvesteri@cc.hut.fi>
  */
 abstract class AbstractQuery
 {
@@ -46,27 +63,27 @@ abstract class AbstractQuery
     /**
      * Hydrates an object graph. This is the default behavior.
      */
-    const HYDRATE_OBJECT = 1;
+    public const HYDRATE_OBJECT = 1;
 
     /**
      * Hydrates an array graph.
      */
-    const HYDRATE_ARRAY = 2;
+    public const HYDRATE_ARRAY = 2;
 
     /**
      * Hydrates a flat, rectangular result set with scalar values.
      */
-    const HYDRATE_SCALAR = 3;
+    public const HYDRATE_SCALAR = 3;
 
     /**
      * Hydrates a single scalar value.
      */
-    const HYDRATE_SINGLE_SCALAR = 4;
+    public const HYDRATE_SINGLE_SCALAR = 4;
 
     /**
      * Very simple object hydrator (optimized for performance).
      */
-    const HYDRATE_SIMPLEOBJECT = 5;
+    public const HYDRATE_SIMPLEOBJECT = 5;
 
     /**
      * The parameter map of this query.
@@ -79,7 +96,7 @@ abstract class AbstractQuery
     /**
      * The user-specified ResultSetMapping to use.
      *
-     * @var \Doctrine\ORM\Query\ResultSetMapping
+     * @var ResultSetMapping
      */
     protected $_resultSetMapping;
 
@@ -93,7 +110,7 @@ abstract class AbstractQuery
     /**
      * The map of query hints.
      *
-     * @var array
+     * @psalm-var array<string, mixed>
      */
     protected $_hints = [];
 
@@ -104,33 +121,27 @@ abstract class AbstractQuery
      */
     protected $_hydrationMode = self::HYDRATE_OBJECT;
 
-    /**
-     * @var \Doctrine\DBAL\Cache\QueryCacheProfile
-     */
+    /** @var QueryCacheProfile|null */
     protected $_queryCacheProfile;
 
     /**
      * Whether or not expire the result cache.
      *
-     * @var boolean
+     * @var bool
      */
     protected $_expireResultCache = false;
 
-    /**
-     * @var \Doctrine\DBAL\Cache\QueryCacheProfile
-     */
+    /** @var QueryCacheProfile */
     protected $_hydrationCacheProfile;
 
     /**
      * Whether to use second level cache, if available.
      *
-     * @var boolean
+     * @var bool
      */
     protected $cacheable = false;
 
-    /**
-     * @var boolean
-     */
+    /** @var bool */
     protected $hasCache = false;
 
     /**
@@ -143,31 +154,25 @@ abstract class AbstractQuery
     /**
      * Second level query cache mode.
      *
-     * @var integer|null
+     * @var int|null
      */
     protected $cacheMode;
 
-    /**
-     * @var \Doctrine\ORM\Cache\Logging\CacheLogger|null
-     */
+    /** @var CacheLogger|null */
     protected $cacheLogger;
 
-    /**
-     * @var integer
-     */
+    /** @var int */
     protected $lifetime = 0;
 
     /**
      * Initializes a new instance of a class derived from <tt>AbstractQuery</tt>.
-     *
-     * @param \Doctrine\ORM\EntityManagerInterface $em
      */
     public function __construct(EntityManagerInterface $em)
     {
-        $this->_em          = $em;
-        $this->parameters   = new ArrayCollection();
-        $this->_hints       = $em->getConfiguration()->getDefaultQueryHints();
-        $this->hasCache     = $this->_em->getConfiguration()->isSecondLevelCacheEnabled();
+        $this->_em        = $em;
+        $this->parameters = new ArrayCollection();
+        $this->_hints     = $em->getConfiguration()->getDefaultQueryHints();
+        $this->hasCache   = $this->_em->getConfiguration()->isSecondLevelCacheEnabled();
 
         if ($this->hasCache) {
             $this->cacheLogger = $em->getConfiguration()
@@ -179,19 +184,19 @@ abstract class AbstractQuery
     /**
      * Enable/disable second level query (result) caching for this query.
      *
-     * @param boolean $cacheable
+     * @param bool $cacheable
      *
      * @return static This query instance.
      */
     public function setCacheable($cacheable)
     {
-        $this->cacheable = (boolean) $cacheable;
+        $this->cacheable = (bool) $cacheable;
 
         return $this;
     }
 
     /**
-     * @return boolean TRUE if the query results are enable for second level cache, FALSE otherwise.
+     * @return bool TRUE if the query results are enable for second level cache, FALSE otherwise.
      */
     public function isCacheable()
     {
@@ -211,17 +216,17 @@ abstract class AbstractQuery
     }
 
     /**
-    * Obtain the name of the second level query cache region in which query results will be stored
-    *
-    * @return string|null The cache region name; NULL indicates the default region.
-    */
+     * Obtain the name of the second level query cache region in which query results will be stored
+     *
+     * @return string|null The cache region name; NULL indicates the default region.
+     */
     public function getCacheRegion()
     {
         return $this->cacheRegion;
     }
 
     /**
-     * @return boolean TRUE if the query cache and second level cache are enabled, FALSE otherwise.
+     * @return bool TRUE if the query cache and second level cache are enabled, FALSE otherwise.
      */
     protected function isCacheEnabled()
     {
@@ -229,7 +234,7 @@ abstract class AbstractQuery
     }
 
     /**
-     * @return integer
+     * @return int
      */
     public function getLifetime()
     {
@@ -239,19 +244,19 @@ abstract class AbstractQuery
     /**
      * Sets the life-time for this query into second level cache.
      *
-     * @param integer $lifetime
+     * @param int $lifetime
      *
      * @return static This query instance.
      */
     public function setLifetime($lifetime)
     {
-        $this->lifetime = (integer) $lifetime;
+        $this->lifetime = (int) $lifetime;
 
         return $this;
     }
 
     /**
-     * @return integer
+     * @return int
      */
     public function getCacheMode()
     {
@@ -259,13 +264,13 @@ abstract class AbstractQuery
     }
 
     /**
-     * @param integer $cacheMode
+     * @param int $cacheMode
      *
      * @return static This query instance.
      */
     public function setCacheMode($cacheMode)
     {
-        $this->cacheMode = (integer) $cacheMode;
+        $this->cacheMode = (int) $cacheMode;
 
         return $this;
     }
@@ -282,7 +287,7 @@ abstract class AbstractQuery
     /**
      * Retrieves the associated EntityManager of this Query instance.
      *
-     * @return \Doctrine\ORM\EntityManager
+     * @return EntityManagerInterface
      */
     public function getEntityManager()
     {
@@ -307,6 +312,7 @@ abstract class AbstractQuery
      * Get all defined parameters.
      *
      * @return ArrayCollection The defined query parameters.
+     * @psalm-return ArrayCollection<int, Parameter>
      */
     public function getParameters()
     {
@@ -318,14 +324,14 @@ abstract class AbstractQuery
      *
      * @param mixed $key The key (index or name) of the bound parameter.
      *
-     * @return Query\Parameter|null The value of the bound parameter, or NULL if not available.
+     * @return Parameter|null The value of the bound parameter, or NULL if not available.
      */
     public function getParameter($key)
     {
         $key = Query\Parameter::normalizeName($key);
 
         $filteredParameters = $this->parameters->filter(
-            function (Query\Parameter $parameter) use ($key) : bool {
+            static function (Query\Parameter $parameter) use ($key): bool {
                 $parameterName = $parameter->getName();
 
                 return $key === $parameterName;
@@ -339,10 +345,9 @@ abstract class AbstractQuery
      * Sets a collection of query parameters.
      *
      * @param ArrayCollection|mixed[] $parameters
+     * @psalm-param ArrayCollection<int, Parameter>|mixed[] $parameters
      *
      * @return static This query instance.
-     *
-     * @psalm-param ArrayCollection<int, Parameter>|mixed[] $parameters
      */
     public function setParameters($parameters)
     {
@@ -395,10 +400,9 @@ abstract class AbstractQuery
      * @param mixed $value
      *
      * @return mixed[]|string|int|float|bool
-     *
-     * @throws \Doctrine\ORM\ORMInvalidArgumentException
-     *
      * @psalm-return array|scalar
+     *
+     * @throws ORMInvalidArgumentException
      */
     public function processParameterValue($value)
     {
@@ -407,14 +411,11 @@ abstract class AbstractQuery
         }
 
         if ($value instanceof Collection) {
-            $value = $value->toArray();
+            $value = iterator_to_array($value);
         }
 
         if (is_array($value)) {
-            foreach ($value as $key => $paramValue) {
-                $paramValue  = $this->processParameterValue($paramValue);
-                $value[$key] = is_array($paramValue) ? reset($paramValue) : $paramValue;
-            }
+            $value = $this->processArrayParameterValue($value);
 
             return $value;
         }
@@ -434,9 +435,47 @@ abstract class AbstractQuery
                 throw ORMInvalidArgumentException::invalidIdentifierBindingEntity();
             }
         } catch (MappingException | ORMMappingException $e) {
-            // Silence any mapping exceptions. These can occur if the object in
-            // question is not a mapped entity, in which case we just don't do
-            // any preparation on the value.
+            /* Silence any mapping exceptions. These can occur if the object in
+               question is not a mapped entity, in which case we just don't do
+               any preparation on the value.
+               Depending on MappingDriver, either MappingException or
+               ORMMappingException is thrown. */
+
+            $value = $this->potentiallyProcessIterable($value);
+        }
+
+        return $value;
+    }
+
+    /**
+     * If no mapping is detected, trying to resolve the value as a Traversable
+     *
+     * @param mixed $value
+     *
+     * @return mixed
+     */
+    private function potentiallyProcessIterable($value)
+    {
+        if ($value instanceof Traversable) {
+            $value = iterator_to_array($value);
+            $value = $this->processArrayParameterValue($value);
+        }
+
+        return $value;
+    }
+
+    /**
+     * Process a parameter value which was previously identified as an array
+     *
+     * @param mixed[] $value
+     *
+     * @return mixed[]
+     */
+    private function processArrayParameterValue(array $value): array
+    {
+        foreach ($value as $key => $paramValue) {
+            $paramValue  = $this->processParameterValue($paramValue);
+            $value[$key] = is_array($paramValue) ? reset($paramValue) : $paramValue;
         }
 
         return $value;
@@ -445,8 +484,6 @@ abstract class AbstractQuery
     /**
      * Sets the ResultSetMapping that should be used for hydration.
      *
-     * @param \Doctrine\ORM\Query\ResultSetMapping $rsm
-     *
      * @return static This query instance.
      */
     public function setResultSetMapping(Query\ResultSetMapping $rsm)
@@ -460,7 +497,7 @@ abstract class AbstractQuery
     /**
      * Gets the ResultSetMapping used for hydration.
      *
-     * @return \Doctrine\ORM\Query\ResultSetMapping
+     * @return ResultSetMapping
      */
     protected function getResultSetMapping()
     {
@@ -469,18 +506,14 @@ abstract class AbstractQuery
 
     /**
      * Allows to translate entity namespaces to full qualified names.
-     *
-     * @param Query\ResultSetMapping $rsm
-     *
-     * @return void
      */
-    private function translateNamespaces(Query\ResultSetMapping $rsm)
+    private function translateNamespaces(Query\ResultSetMapping $rsm): void
     {
-        $translate = function ($alias) : string {
+        $translate = function ($alias): string {
             return $this->_em->getClassMetadata($alias)->getName();
         };
 
-        $rsm->aliasMap = array_map($translate, $rsm->aliasMap);
+        $rsm->aliasMap         = array_map($translate, $rsm->aliasMap);
         $rsm->declaringClasses = array_map($translate, $rsm->declaringClasses);
     }
 
@@ -496,21 +529,19 @@ abstract class AbstractQuery
      * some form of caching with UnitOfWork registration you should use
      * {@see AbstractQuery::setResultCacheProfile()}.
      *
+     * @return static This query instance.
+     *
      * @example
      * $lifetime = 100;
      * $resultKey = "abc";
      * $query->setHydrationCacheProfile(new QueryCacheProfile());
      * $query->setHydrationCacheProfile(new QueryCacheProfile($lifetime, $resultKey));
-     *
-     * @param \Doctrine\DBAL\Cache\QueryCacheProfile $profile
-     *
-     * @return static This query instance.
      */
-    public function setHydrationCacheProfile(QueryCacheProfile $profile = null)
+    public function setHydrationCacheProfile(?QueryCacheProfile $profile = null)
     {
         if ($profile !== null && ! $profile->getResultCacheDriver()) {
             $resultCacheDriver = $this->_em->getConfiguration()->getHydrationCacheImpl();
-            $profile = $profile->setResultCacheDriver($resultCacheDriver);
+            $profile           = $profile->setResultCacheDriver($resultCacheDriver);
         }
 
         $this->_hydrationCacheProfile = $profile;
@@ -519,7 +550,7 @@ abstract class AbstractQuery
     }
 
     /**
-     * @return \Doctrine\DBAL\Cache\QueryCacheProfile
+     * @return QueryCacheProfile
      */
     public function getHydrationCacheProfile()
     {
@@ -532,15 +563,13 @@ abstract class AbstractQuery
      * If no result cache driver is set in the QueryCacheProfile, the default
      * result cache driver is used from the configuration.
      *
-     * @param \Doctrine\DBAL\Cache\QueryCacheProfile $profile
-     *
      * @return static This query instance.
      */
-    public function setResultCacheProfile(QueryCacheProfile $profile = null)
+    public function setResultCacheProfile(?QueryCacheProfile $profile = null)
     {
         if ($profile !== null && ! $profile->getResultCacheDriver()) {
             $resultCacheDriver = $this->_em->getConfiguration()->getResultCacheImpl();
-            $profile = $profile->setResultCacheDriver($resultCacheDriver);
+            $profile           = $profile->setResultCacheDriver($resultCacheDriver);
         }
 
         $this->_queryCacheProfile = $profile;
@@ -559,6 +588,7 @@ abstract class AbstractQuery
      */
     public function setResultCacheDriver($resultCacheDriver = null)
     {
+        /** @phpstan-ignore-next-line */
         if ($resultCacheDriver !== null && ! ($resultCacheDriver instanceof \Doctrine\Common\Cache\Cache)) {
             throw ORMException::invalidResultCacheDriver();
         }
@@ -614,7 +644,7 @@ abstract class AbstractQuery
      *
      * @return static This query instance.
      */
-    public function enableResultCache(?int $lifetime = null, ?string $resultCacheId = null) : self
+    public function enableResultCache(?int $lifetime = null, ?string $resultCacheId = null): self
     {
         $this->setResultCacheLifetime($lifetime);
         $this->setResultCacheId($resultCacheId);
@@ -627,7 +657,7 @@ abstract class AbstractQuery
      *
      * @return static This query instance.
      */
-    public function disableResultCache() : self
+    public function disableResultCache(): self
     {
         $this->_queryCacheProfile = null;
 
@@ -643,7 +673,7 @@ abstract class AbstractQuery
      */
     public function setResultCacheLifetime($lifetime)
     {
-        $lifetime = ($lifetime !== null) ? (int) $lifetime : 0;
+        $lifetime = $lifetime !== null ? (int) $lifetime : 0;
 
         $this->_queryCacheProfile = $this->_queryCacheProfile
             ? $this->_queryCacheProfile->setLifetime($lifetime)
@@ -657,7 +687,7 @@ abstract class AbstractQuery
      *
      * @deprecated
      *
-     * @return integer
+     * @return int
      */
     public function getResultCacheLifetime()
     {
@@ -667,7 +697,7 @@ abstract class AbstractQuery
     /**
      * Defines if the result cache is active or not.
      *
-     * @param boolean $expire Whether or not to force resultset cache expiration.
+     * @param bool $expire Whether or not to force resultset cache expiration.
      *
      * @return static This query instance.
      */
@@ -681,7 +711,7 @@ abstract class AbstractQuery
     /**
      * Retrieves if the resultset cache is active or not.
      *
-     * @return boolean
+     * @return bool
      */
     public function getExpireResultCache()
     {
@@ -689,7 +719,7 @@ abstract class AbstractQuery
     }
 
     /**
-     * @return QueryCacheProfile
+     * @return QueryCacheProfile|null
      */
     public function getQueryCacheProfile()
     {
@@ -762,7 +792,7 @@ abstract class AbstractQuery
      *
      * Alias for execute(null, HYDRATE_ARRAY).
      *
-     * @return array
+     * @return mixed[]
      */
     public function getArrayResult()
     {
@@ -774,7 +804,7 @@ abstract class AbstractQuery
      *
      * Alias for execute(null, HYDRATE_SCALAR).
      *
-     * @return array
+     * @return mixed[]
      */
     public function getScalarResult()
     {
@@ -798,17 +828,16 @@ abstract class AbstractQuery
             return null;
         }
 
-
         if ($this->_hydrationMode !== self::HYDRATE_SINGLE_SCALAR && ! $result) {
             return null;
         }
 
-        if ( ! is_array($result)) {
+        if (! is_array($result)) {
             return $result;
         }
 
         if (count($result) > 1) {
-            throw new NonUniqueResultException;
+            throw new NonUniqueResultException();
         }
 
         return array_shift($result);
@@ -834,15 +863,15 @@ abstract class AbstractQuery
         $result = $this->execute(null, $hydrationMode);
 
         if ($this->_hydrationMode !== self::HYDRATE_SINGLE_SCALAR && ! $result) {
-            throw new NoResultException;
+            throw new NoResultException();
         }
 
-        if ( ! is_array($result)) {
+        if (! is_array($result)) {
             return $result;
         }
 
         if (count($result) > 1) {
-            throw new NonUniqueResultException;
+            throw new NonUniqueResultException();
         }
 
         return array_shift($result);
@@ -887,7 +916,7 @@ abstract class AbstractQuery
      */
     public function getHint($name)
     {
-        return isset($this->_hints[$name]) ? $this->_hints[$name] : false;
+        return $this->_hints[$name] ?? false;
     }
 
     /**
@@ -905,7 +934,7 @@ abstract class AbstractQuery
     /**
      * Return the key value map of query hints that are currently set.
      *
-     * @return array
+     * @return array<string,mixed>
      */
     public function getHints()
     {
@@ -916,18 +945,27 @@ abstract class AbstractQuery
      * Executes the query and returns an IterableResult that can be used to incrementally
      * iterate over the result.
      *
-     * @param ArrayCollection|array|null $parameters    The query parameters.
-     * @param string|int|null            $hydrationMode The hydration mode to use.
+     * @deprecated 2.8 Use {@see toIterable} instead. See https://github.com/doctrine/orm/issues/8463
      *
-     * @return \Doctrine\ORM\Internal\Hydration\IterableResult
+     * @param ArrayCollection|mixed[]|null $parameters    The query parameters.
+     * @param string|int|null              $hydrationMode The hydration mode to use.
+     *
+     * @return IterableResult
      */
     public function iterate($parameters = null, $hydrationMode = null)
     {
+        Deprecation::trigger(
+            'doctrine/orm',
+            'https://github.com/doctrine/orm/issues/8463',
+            'Method %s() is deprecated and will be removed in Doctrine ORM 3.0. Use toIterable() instead.',
+            __METHOD__
+        );
+
         if ($hydrationMode !== null) {
             $this->setHydrationMode($hydrationMode);
         }
 
-        if ( ! empty($parameters)) {
+        if (! empty($parameters)) {
             $this->setParameters($parameters);
         }
 
@@ -937,11 +975,46 @@ abstract class AbstractQuery
         return $this->_em->newHydrator($this->_hydrationMode)->iterate($stmt, $rsm, $this->_hints);
     }
 
+    /**
+     * Executes the query and returns an iterable that can be used to incrementally
+     * iterate over the result.
+     *
+     * @param ArrayCollection|array|mixed[] $parameters    The query parameters.
+     * @param string|int|null               $hydrationMode The hydration mode to use.
+     * @psalm-param ArrayCollection<int, Parameter>|mixed[] $parameters
+     *
+     * @return iterable<mixed>
+     */
+    public function toIterable(iterable $parameters = [], $hydrationMode = null): iterable
+    {
+        if ($hydrationMode !== null) {
+            $this->setHydrationMode($hydrationMode);
+        }
+
+        if (
+            ($this->isCountable($parameters) && count($parameters) !== 0)
+            || ($parameters instanceof Traversable && iterator_count($parameters) !== 0)
+        ) {
+            $this->setParameters($parameters);
+        }
+
+        $rsm = $this->getResultSetMapping();
+
+        if ($rsm->isMixed && count($rsm->scalarMappings) > 0) {
+            throw QueryException::iterateWithMixedResultNotAllowed();
+        }
+
+        $stmt = $this->_doExecute();
+
+        return $this->_em->newHydrator($this->_hydrationMode)->toIterable($stmt, $rsm, $this->_hints);
+    }
+
     /**
      * Executes the query.
      *
-     * @param ArrayCollection|array|null $parameters Query parameters.
-     * @param string|int|null            $hydrationMode Processing mode to be used during the hydration process.
+     * @param ArrayCollection|mixed[]|null $parameters    Query parameters.
+     * @param string|int|null              $hydrationMode Processing mode to be used during the hydration process.
+     * @psalm-param ArrayCollection<int, Parameter>|mixed[]|null $parameters
      *
      * @return mixed
      */
@@ -957,8 +1030,9 @@ abstract class AbstractQuery
     /**
      * Execute query ignoring second level cache.
      *
-     * @param ArrayCollection|array|null $parameters
-     * @param string|int|null            $hydrationMode
+     * @param ArrayCollection|mixed[]|null $parameters
+     * @param string|int|null              $hydrationMode
+     * @psalm-param ArrayCollection<int, Parameter>|mixed[]|null $parameters
      *
      * @return mixed
      */
@@ -968,11 +1042,11 @@ abstract class AbstractQuery
             $this->setHydrationMode($hydrationMode);
         }
 
-        if ( ! empty($parameters)) {
+        if (! empty($parameters)) {
             $this->setParameters($parameters);
         }
 
-        $setCacheEntry = static function () : void {
+        $setCacheEntry = static function ($data): void {
         };
 
         if ($this->_hydrationCacheProfile !== null) {
@@ -986,11 +1060,11 @@ abstract class AbstractQuery
                 return $result[$realCacheKey];
             }
 
-            if ( ! $result) {
+            if (! $result) {
                 $result = [];
             }
 
-            $setCacheEntry = static function ($data) use ($cache, $result, $cacheKey, $realCacheKey, $queryCacheProfile) : void {
+            $setCacheEntry = static function ($data) use ($cache, $result, $cacheKey, $realCacheKey, $queryCacheProfile): void {
                 $result[$realCacheKey] = $data;
 
                 $cache->save($cacheKey, $result, $queryCacheProfile->getLifetime());
@@ -1016,8 +1090,9 @@ abstract class AbstractQuery
     /**
      * Load from second level cache or executes the query and put into cache.
      *
-     * @param ArrayCollection|array|null $parameters
-     * @param string|int|null            $hydrationMode
+     * @param ArrayCollection|mixed[]|null $parameters
+     * @param string|int|null              $hydrationMode
+     * @psalm-param ArrayCollection<int, Parameter>|mixed[]|null $parameters
      *
      * @return mixed
      */
@@ -1032,7 +1107,7 @@ abstract class AbstractQuery
             $this->getTimestampKey()
         );
 
-        $result     = $queryCache->get($queryKey, $rsm, $this->_hints);
+        $result = $queryCache->get($queryKey, $rsm, $this->_hints);
 
         if ($result !== null) {
             if ($this->cacheLogger) {
@@ -1056,10 +1131,7 @@ abstract class AbstractQuery
         return $result;
     }
 
-    /**
-     * @return \Doctrine\ORM\Cache\TimestampCacheKey|null
-     */
-    private function getTimestampKey()
+    private function getTimestampKey(): ?TimestampCacheKey
     {
         $entityName = reset($this->_resultSetMapping->aliasMap);
 
@@ -1130,7 +1202,9 @@ abstract class AbstractQuery
     /**
      * Executes the query and returns a the resulting Statement object.
      *
-     * @return \Doctrine\DBAL\Driver\Statement The executed database statement that holds the results.
+     * @return ResultStatement|int The executed database statement that holds
+     *                             the results, or an integer indicating how
+     *                             many rows were affected.
      */
     abstract protected function _doExecute();
 
@@ -1156,10 +1230,12 @@ abstract class AbstractQuery
     {
         $query  = $this->getSQL();
         $hints  = $this->getHints();
-        $params = array_map(function(Parameter $parameter) {
+        $params = array_map(function (Parameter $parameter) {
+            $value = $parameter->getValue();
+
             // Small optimization
-            // Does not invoke processParameterValue for scalar values
-            if (is_scalar($value = $parameter->getValue())) {
+            // Does not invoke processParameterValue for scalar value
+            if (is_scalar($value)) {
                 return $value;
             }
 
@@ -1170,4 +1246,10 @@ abstract class AbstractQuery
 
         return sha1($query . '-' . serialize($params) . '-' . serialize($hints));
     }
+
+    /** @param iterable<mixed> $subject */
+    private function isCountable(iterable $subject): bool
+    {
+        return $subject instanceof Countable || is_array($subject);
+    }
 }

lib/Doctrine/ORM/Cache.php

@@ -20,44 +20,44 @@
 
 namespace Doctrine\ORM;
 
+use Doctrine\ORM\Cache\QueryCache;
+use Doctrine\ORM\Cache\Region;
+
 /**
  * Provides an API for querying/managing the second level cache regions.
- *
- * @since   2.5
- * @author  Fabio B. Silva <fabio.bat.silva@gmail.com>
  */
 interface Cache
 {
-    const DEFAULT_QUERY_REGION_NAME = 'query_cache_region';
+    public const DEFAULT_QUERY_REGION_NAME = 'query_cache_region';
 
-    const DEFAULT_TIMESTAMP_REGION_NAME = 'timestamp_cache_region';
+    public const DEFAULT_TIMESTAMP_REGION_NAME = 'timestamp_cache_region';
 
     /**
      * May read items from the cache, but will not add items.
      */
-    const MODE_GET = 1;
+    public const MODE_GET = 1;
 
     /**
      * Will never read items from the cache,
      * but will add items to the cache as it reads them from the database.
      */
-    const MODE_PUT = 2;
+    public const MODE_PUT = 2;
 
     /**
      * May read items from the cache, and add items to the cache.
      */
-    const MODE_NORMAL = 3;
+    public const MODE_NORMAL = 3;
 
     /**
      * The query will never read items from the cache,
      * but will refresh items to the cache as it reads them from the database.
      */
-    const MODE_REFRESH = 4;
+    public const MODE_REFRESH = 4;
 
     /**
      * @param string $className The entity class.
      *
-     * @return \Doctrine\ORM\Cache\Region|null
+     * @return Region|null
      */
     public function getEntityCacheRegion($className);
 
@@ -65,7 +65,7 @@ interface Cache
      * @param string $className   The entity class.
      * @param string $association The field name that represents the association.
      *
-     * @return \Doctrine\ORM\Cache\Region|null
+     * @return Region|null
      */
     public function getCollectionCacheRegion($className, $association);
 
@@ -75,7 +75,7 @@ interface Cache
      * @param string $className  The entity class.
      * @param mixed  $identifier The entity identifier
      *
-     * @return boolean true if the underlying cache contains corresponding data; false otherwise.
+     * @return bool true if the underlying cache contains corresponding data; false otherwise.
      */
     public function containsEntity($className, $identifier);
 
@@ -112,7 +112,7 @@ interface Cache
      * @param string $association     The field name that represents the association.
      * @param mixed  $ownerIdentifier The identifier of the owning entity.
      *
-     * @return boolean true if the underlying cache contains corresponding data; false otherwise.
+     * @return bool true if the underlying cache contains corresponding data; false otherwise.
      */
     public function containsCollection($className, $association, $ownerIdentifier);
 
@@ -149,7 +149,7 @@ interface Cache
      *
      * @param string $regionName The cache name given to the query.
      *
-     * @return boolean true if the underlying cache contains corresponding data; false otherwise.
+     * @return bool true if the underlying cache contains corresponding data; false otherwise.
      */
     public function containsQuery($regionName);
 
@@ -172,7 +172,7 @@ interface Cache
      *
      * @param string|null $regionName Query cache region name, or default query cache if the region name is NULL.
      *
-     * @return \Doctrine\ORM\Cache\QueryCache The Query Cache associated with the region name.
+     * @return QueryCache The Query Cache associated with the region name.
      */
     public function getQueryCache($regionName = null);
 }

lib/Doctrine/ORM/Cache/AssociationCacheEntry.php

@@ -22,16 +22,13 @@ namespace Doctrine\ORM\Cache;
 
 /**
  * Association cache entry
- *
- * @since   2.5
- * @author  Fabio B. Silva <fabio.bat.silva@gmail.com>
  */
 class AssociationCacheEntry implements CacheEntry
 {
     /**
      * READ-ONLY: Public only for performance reasons, it should be considered immutable.
      *
-     * @var array The entity identifier
+     * @var array<string, mixed> The entity identifier
      */
     public $identifier;
 
@@ -43,13 +40,13 @@ class AssociationCacheEntry implements CacheEntry
     public $class;
 
     /**
-     * @param string $class      The entity class.
-     * @param array  $identifier The entity identifier.
+     * @param string               $class      The entity class.
+     * @param array<string, mixed> $identifier The entity identifier.
      */
     public function __construct($class, array $identifier)
     {
-        $this->class       = $class;
-        $this->identifier  = $identifier;
+        $this->class      = $class;
+        $this->identifier = $identifier;
     }
 
     /**
@@ -57,7 +54,7 @@ class AssociationCacheEntry implements CacheEntry
      *
      * This method allow Doctrine\Common\Cache\PhpFileCache compatibility
      *
-     * @param array $values array containing property values
+     * @param array<string, mixed> $values array containing property values
      *
      * @return AssociationCacheEntry
      */

lib/Doctrine/ORM/Cache/CacheConfiguration.php

@@ -24,34 +24,23 @@ use Doctrine\ORM\Cache\Logging\CacheLogger;
 
 /**
  * Configuration container for second-level cache.
- *
- * @since   2.5
- * @author  Fabio B. Silva <fabio.bat.silva@gmail.com>
  */
 class CacheConfiguration
 {
-    /**
-     * @var \Doctrine\ORM\Cache\CacheFactory|null
-     */
+    /** @var CacheFactory|null */
     private $cacheFactory;
 
-    /**
-     * @var \Doctrine\ORM\Cache\RegionsConfiguration|null
-     */
+    /** @var RegionsConfiguration|null */
     private $regionsConfig;
 
-    /**
-     * @var \Doctrine\ORM\Cache\Logging\CacheLogger|null
-     */
+    /** @var CacheLogger|null */
     private $cacheLogger;
 
-    /**
-     * @var \Doctrine\ORM\Cache\QueryCacheValidator|null
-     */
+    /** @var QueryCacheValidator|null */
     private $queryValidator;
 
     /**
-     * @return \Doctrine\ORM\Cache\CacheFactory|null
+     * @return CacheFactory|null
      */
     public function getCacheFactory()
     {
@@ -59,8 +48,6 @@ class CacheConfiguration
     }
 
     /**
-     * @param \Doctrine\ORM\Cache\CacheFactory $factory
-     *
      * @return void
      */
     public function setCacheFactory(CacheFactory $factory)
@@ -69,7 +56,7 @@ class CacheConfiguration
     }
 
     /**
-     * @return \Doctrine\ORM\Cache\Logging\CacheLogger|null
+     * @return CacheLogger|null
      */
     public function getCacheLogger()
     {
@@ -77,7 +64,7 @@ class CacheConfiguration
     }
 
     /**
-     * @param \Doctrine\ORM\Cache\Logging\CacheLogger $logger
+     * @return void
      */
     public function setCacheLogger(CacheLogger $logger)
     {
@@ -85,7 +72,7 @@ class CacheConfiguration
     }
 
     /**
-     * @return \Doctrine\ORM\Cache\RegionsConfiguration
+     * @return RegionsConfiguration
      */
     public function getRegionsConfiguration()
     {
@@ -97,7 +84,7 @@ class CacheConfiguration
     }
 
     /**
-     * @param \Doctrine\ORM\Cache\RegionsConfiguration $regionsConfig
+     * @return void
      */
     public function setRegionsConfiguration(RegionsConfiguration $regionsConfig)
     {
@@ -105,7 +92,7 @@ class CacheConfiguration
     }
 
     /**
-     * @return \Doctrine\ORM\Cache\QueryCacheValidator
+     * @return QueryCacheValidator
      */
     public function getQueryValidator()
     {
@@ -119,7 +106,7 @@ class CacheConfiguration
     }
 
     /**
-     * @param \Doctrine\ORM\Cache\QueryCacheValidator $validator
+     * @return void
      */
     public function setQueryValidator(QueryCacheValidator $validator)
     {

lib/Doctrine/ORM/Cache/CacheEntry.php

@@ -26,11 +26,7 @@ namespace Doctrine\ORM\Cache;
  * <b>IMPORTANT NOTE:</b>
  *
  * Fields of classes that implement CacheEntry are public for performance reason.
- *
- * @since   2.5
- * @author  Fabio B. Silva <fabio.bat.silva@gmail.com>
  */
 interface CacheEntry
 {
-
 }

lib/Doctrine/ORM/Cache/CacheException.php

@@ -1,4 +1,5 @@
 <?php
+
 /*
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
@@ -21,11 +22,10 @@ namespace Doctrine\ORM\Cache;
 
 use Doctrine\ORM\ORMException;
 
+use function sprintf;
+
 /**
  * Exception for cache.
- *
- * @since   2.5
- * @author  Fabio B. Silva <fabio.bat.silva@gmail.com>
  */
 class CacheException extends ORMException
 {
@@ -33,7 +33,7 @@ class CacheException extends ORMException
      * @param string $sourceEntity
      * @param string $fieldName
      *
-     * @return \Doctrine\ORM\Cache\CacheException
+     * @return CacheException
      */
     public static function updateReadOnlyCollection($sourceEntity, $fieldName)
     {
@@ -43,7 +43,7 @@ class CacheException extends ORMException
     /**
      * @param string $entityName
      *
-     * @return \Doctrine\ORM\Cache\CacheException
+     * @return CacheException
      */
     public static function updateReadOnlyEntity($entityName)
     {
@@ -53,7 +53,7 @@ class CacheException extends ORMException
     /**
      * @param string $entityName
      *
-     * @return \Doctrine\ORM\Cache\CacheException
+     * @return CacheException
      */
     public static function nonCacheableEntity($entityName)
     {

lib/Doctrine/ORM/Cache/CacheFactory.php

@@ -20,93 +20,91 @@
 
 namespace Doctrine\ORM\Cache;
 
-use Doctrine\ORM\Mapping\ClassMetadata;
+use Doctrine\ORM\Cache;
+use Doctrine\ORM\Cache\Persister\Collection\CachedCollectionPersister;
+use Doctrine\ORM\Cache\Persister\Entity\CachedEntityPersister;
 use Doctrine\ORM\EntityManagerInterface;
+use Doctrine\ORM\Mapping\ClassMetadata;
 use Doctrine\ORM\Persisters\Collection\CollectionPersister;
 use Doctrine\ORM\Persisters\Entity\EntityPersister;
 
 /**
  * Contract for building second level cache regions components.
- * 
- * @since   2.5
- * @author  Fabio B. Silva <fabio.bat.silva@gmail.com>
  */
 interface CacheFactory
 {
     /**
      * Build an entity persister for the given entity metadata.
      *
-     * @param \Doctrine\ORM\EntityManagerInterface            $em        The entity manager.
-     * @param \Doctrine\ORM\Persisters\Entity\EntityPersister $persister The entity persister that will be cached.
-     * @param \Doctrine\ORM\Mapping\ClassMetadata             $metadata  The entity metadata.
+     * @param EntityManagerInterface $em        The entity manager.
+     * @param EntityPersister        $persister The entity persister that will be cached.
+     * @param ClassMetadata          $metadata  The entity metadata.
      *
-     * @return \Doctrine\ORM\Cache\Persister\Entity\CachedEntityPersister
+     * @return CachedEntityPersister
      */
     public function buildCachedEntityPersister(EntityManagerInterface $em, EntityPersister $persister, ClassMetadata $metadata);
 
     /**
      * Build a collection persister for the given relation mapping.
      *
-     * @param \Doctrine\ORM\EntityManagerInterface                    $em        The entity manager.
-     * @param \Doctrine\ORM\Persisters\Collection\CollectionPersister $persister The collection persister that will be cached.
-     * @param array                                                   $mapping   The association mapping.
+     * @param EntityManagerInterface $em        The entity manager.
+     * @param CollectionPersister    $persister The collection persister that will be cached.
+     * @param mixed[]                $mapping   The association mapping.
      *
-     * @return \Doctrine\ORM\Cache\Persister\Collection\CachedCollectionPersister
+     * @return CachedCollectionPersister
      */
     public function buildCachedCollectionPersister(EntityManagerInterface $em, CollectionPersister $persister, array $mapping);
 
     /**
      * Build a query cache based on the given region name
      *
-     * @param \Doctrine\ORM\EntityManagerInterface $em         The Entity manager.
-     * @param string                               $regionName The region name.
+     * @param EntityManagerInterface $em         The Entity manager.
+     * @param string                 $regionName The region name.
      *
-     * @return \Doctrine\ORM\Cache\QueryCache The built query cache.
+     * @return QueryCache The built query cache.
      */
     public function buildQueryCache(EntityManagerInterface $em, $regionName = null);
 
     /**
      * Build an entity hydrator
      *
-     * @param \Doctrine\ORM\EntityManagerInterface $em       The Entity manager.
-     * @param \Doctrine\ORM\Mapping\ClassMetadata  $metadata The entity metadata.
+     * @param EntityManagerInterface $em       The Entity manager.
+     * @param ClassMetadata          $metadata The entity metadata.
      *
-     * @return \Doctrine\ORM\Cache\EntityHydrator The built entity hydrator.
+     * @return EntityHydrator The built entity hydrator.
      */
     public function buildEntityHydrator(EntityManagerInterface $em, ClassMetadata $metadata);
 
     /**
      * Build a collection hydrator
      *
-     * @param \Doctrine\ORM\EntityManagerInterface $em      The Entity manager.
-     * @param array                                $mapping The association mapping.
+     * @param EntityManagerInterface $em      The Entity manager.
+     * @param mixed[]                $mapping The association mapping.
      *
-     * @return \Doctrine\ORM\Cache\CollectionHydrator The built collection hydrator.
+     * @return CollectionHydrator The built collection hydrator.
      */
     public function buildCollectionHydrator(EntityManagerInterface $em, array $mapping);
 
     /**
      * Build a cache region
      *
-     * @param array $cache The cache configuration.
+     * @param array<string,mixed> $cache The cache configuration.
      *
-     * @return \Doctrine\ORM\Cache\Region The cache region.
+     * @return Region The cache region.
      */
     public function getRegion(array $cache);
 
     /**
      * Build timestamp cache region
      *
-     * @return \Doctrine\ORM\Cache\TimestampRegion The timestamp region.
+     * @return TimestampRegion The timestamp region.
      */
     public function getTimestampRegion();
 
     /**
      * Build \Doctrine\ORM\Cache
      *
-     * @param EntityManagerInterface $entityManager
-     *
-     * @return \Doctrine\ORM\Cache
+     * @return Cache
      */
     public function createCache(EntityManagerInterface $entityManager);
 }

lib/Doctrine/ORM/Cache/CacheKey.php

@@ -23,9 +23,6 @@ namespace Doctrine\ORM\Cache;
 /**
  * Defines entity / collection / query key to be stored in the cache region.
  * Allows multiple roles to be stored in the same cache region.
- *
- * @since   2.5
- * @author  Fabio B. Silva <fabio.bat.silva@gmail.com>
  */
 abstract class CacheKey
 {

lib/Doctrine/ORM/Cache/CollectionCacheEntry.php

@@ -22,9 +22,6 @@ namespace Doctrine\ORM\Cache;
 
 /**
  * Collection cache entry
- *
- * @since   2.5
- * @author  Fabio B. Silva <fabio.bat.silva@gmail.com>
  */
 class CollectionCacheEntry implements CacheEntry
 {
@@ -48,7 +45,7 @@ class CollectionCacheEntry implements CacheEntry
      *
      * This method allows for Doctrine\Common\Cache\PhpFileCache compatibility
      *
-     * @param array $values array containing property values
+     * @param array<string, mixed> $values array containing property values
      *
      * @return CollectionCacheEntry
      */

lib/Doctrine/ORM/Cache/CollectionCacheKey.php

@@ -20,18 +20,20 @@
 
 namespace Doctrine\ORM\Cache;
 
+use function implode;
+use function ksort;
+use function str_replace;
+use function strtolower;
+
 /**
  * Defines entity collection roles to be stored in the cache region.
- *
- * @since   2.5
- * @author  Fabio B. Silva <fabio.bat.silva@gmail.com>
  */
 class CollectionCacheKey extends CacheKey
 {
     /**
      * READ-ONLY: Public only for performance reasons, it should be considered immutable.
      *
-     * @var array The owner entity identifier
+     * @var array<string, mixed> The owner entity identifier
      */
     public $ownerIdentifier;
 
@@ -50,17 +52,17 @@ class CollectionCacheKey extends CacheKey
     public $association;
 
     /**
-     * @param string $entityClass     The entity class.
-     * @param string $association     The field name that represents the association.
-     * @param array  $ownerIdentifier The identifier of the owning entity.
+     * @param string               $entityClass     The entity class.
+     * @param string               $association     The field name that represents the association.
+     * @param array<string, mixed> $ownerIdentifier The identifier of the owning entity.
      */
     public function __construct($entityClass, $association, array $ownerIdentifier)
     {
         ksort($ownerIdentifier);
 
-        $this->ownerIdentifier  = $ownerIdentifier;
-        $this->entityClass      = (string) $entityClass;
-        $this->association      = (string) $association;
-        $this->hash             = str_replace('\\', '.', strtolower($entityClass)) . '_' . implode(' ', $ownerIdentifier) . '__' .  $association;
+        $this->ownerIdentifier = $ownerIdentifier;
+        $this->entityClass     = (string) $entityClass;
+        $this->association     = (string) $association;
+        $this->hash            = str_replace('\\', '.', strtolower($entityClass)) . '_' . implode(' ', $ownerIdentifier) . '__' . $association;
     }
 }

lib/Doctrine/ORM/Cache/CollectionHydrator.php

@@ -20,33 +20,31 @@
 
 namespace Doctrine\ORM\Cache;
 
-use Doctrine\ORM\PersistentCollection;
+use Doctrine\Common\Collections\Collection;
 use Doctrine\ORM\Mapping\ClassMetadata;
+use Doctrine\ORM\PersistentCollection;
 
 /**
  * Hydrator cache entry for collections
- *
- * @since   2.5
- * @author  Fabio B. Silva <fabio.bat.silva@gmail.com>
  */
 interface CollectionHydrator
 {
     /**
-     * @param \Doctrine\ORM\Mapping\ClassMetadata           $metadata   The entity metadata.
-     * @param \Doctrine\ORM\Cache\CollectionCacheKey        $key        The cached collection key.
-     * @param array|\Doctrine\Common\Collections\Collection $collection The collection.
+     * @param ClassMetadata            $metadata   The entity metadata.
+     * @param CollectionCacheKey       $key        The cached collection key.
+     * @param array|mixed[]|Collection $collection The collection.
      *
-     * @return \Doctrine\ORM\Cache\CollectionCacheEntry
+     * @return CollectionCacheEntry
      */
     public function buildCacheEntry(ClassMetadata $metadata, CollectionCacheKey $key, $collection);
 
     /**
-     * @param \Doctrine\ORM\Mapping\ClassMetadata      $metadata   The owning entity metadata.
-     * @param \Doctrine\ORM\Cache\CollectionCacheKey   $key        The cached collection key.
-     * @param \Doctrine\ORM\Cache\CollectionCacheEntry $entry      The cached collection entry.
-     * @param \Doctrine\ORM\PersistentCollection       $collection The collection to load the cache into.
+     * @param ClassMetadata        $metadata   The owning entity metadata.
+     * @param CollectionCacheKey   $key        The cached collection key.
+     * @param CollectionCacheEntry $entry      The cached collection entry.
+     * @param PersistentCollection $collection The collection to load the cache into.
      *
-     * @return array
+     * @return mixed[]
      */
     public function loadCacheEntry(ClassMetadata $metadata, CollectionCacheKey $key, CollectionCacheEntry $entry, PersistentCollection $collection);
 }

lib/Doctrine/ORM/Cache/ConcurrentRegion.php

@@ -26,32 +26,29 @@ namespace Doctrine\ORM\Cache;
  *
  * When a entry is locked another process should not be able to read or write the entry.
  * All evict operation should not consider locks, even though an entry is locked evict should be able to delete the entry and its lock.
- *
- * @since   2.5
- * @author  Fabio B. Silva <fabio.bat.silva@gmail.com>
  */
 interface ConcurrentRegion extends Region
 {
     /**
      * Attempts to read lock the mapping for the given key.
      *
-     * @param \Doctrine\ORM\Cache\CacheKey $key The key of the item to lock.
+     * @param CacheKey $key The key of the item to lock.
      *
-     * @return \Doctrine\ORM\Cache\Lock A lock instance or NULL if the lock already exists.
+     * @return Lock A lock instance or NULL if the lock already exists.
      *
-     * @throws \Doctrine\ORM\Cache\LockException Indicates a problem accessing the region.
+     * @throws LockException Indicates a problem accessing the region.
      */
     public function lock(CacheKey $key);
 
     /**
      * Attempts to read unlock the mapping for the given key.
      *
-     * @param \Doctrine\ORM\Cache\CacheKey $key  The key of the item to unlock.
-     * @param \Doctrine\ORM\Cache\Lock     $lock The lock previously obtained from {@link readLock}
+     * @param CacheKey $key  The key of the item to unlock.
+     * @param Lock     $lock The lock previously obtained from {@link readLock}
      *
      * @return void
      *
-     * @throws \Doctrine\ORM\Cache\LockException Indicates a problem accessing the region.
+     * @throws LockException Indicates a problem accessing the region.
      */
     public function unlock(CacheKey $key, Lock $lock);
 }

lib/Doctrine/ORM/Cache/DefaultCache.php

@@ -20,44 +20,35 @@
 
 namespace Doctrine\ORM\Cache;
 
-use Doctrine\ORM\Cache;
 use Doctrine\Common\Util\ClassUtils;
-use Doctrine\ORM\Mapping\ClassMetadata;
-use Doctrine\ORM\EntityManagerInterface;
+use Doctrine\ORM\Cache;
 use Doctrine\ORM\Cache\Persister\CachedPersister;
+use Doctrine\ORM\EntityManagerInterface;
+use Doctrine\ORM\Mapping\ClassMetadata;
 use Doctrine\ORM\ORMInvalidArgumentException;
+use Doctrine\ORM\UnitOfWork;
+
+use function is_array;
+use function is_object;
 
 /**
  * Provides an API for querying/managing the second level cache regions.
- *
- * @since   2.5
- * @author  Fabio B. Silva <fabio.bat.silva@gmail.com>
  */
 class DefaultCache implements Cache
 {
-    /**
-     * @var \Doctrine\ORM\EntityManagerInterface
-     */
+    /** @var EntityManagerInterface */
     private $em;
 
-    /**
-     * @var \Doctrine\ORM\UnitOfWork
-     */
+    /** @var UnitOfWork */
     private $uow;
 
-     /**
-     * @var \Doctrine\ORM\Cache\CacheFactory
-     */
+     /** @var CacheFactory */
     private $cacheFactory;
 
-    /**
-     * @var \Doctrine\ORM\Cache\QueryCache[]
-     */
+    /** @var QueryCache[] */
     private $queryCaches = [];
 
-    /**
-     * @var \Doctrine\ORM\Cache\QueryCache
-     */
+    /** @var QueryCache|null */
     private $defaultQueryCache;
 
     public function __construct(EntityManagerInterface $em)
@@ -77,7 +68,7 @@ class DefaultCache implements Cache
         $metadata  = $this->em->getClassMetadata($className);
         $persister = $this->uow->getEntityPersister($metadata->rootEntityName);
 
-        if ( ! ($persister instanceof CachedPersister)) {
+        if (! ($persister instanceof CachedPersister)) {
             return null;
         }
 
@@ -92,7 +83,7 @@ class DefaultCache implements Cache
         $metadata  = $this->em->getClassMetadata($className);
         $persister = $this->uow->getCollectionPersister($metadata->getAssociationMapping($association));
 
-        if ( ! ($persister instanceof CachedPersister)) {
+        if (! ($persister instanceof CachedPersister)) {
             return null;
         }
 
@@ -104,10 +95,10 @@ class DefaultCache implements Cache
      */
     public function containsEntity($className, $identifier)
     {
-        $metadata   = $this->em->getClassMetadata($className);
-        $persister  = $this->uow->getEntityPersister($metadata->rootEntityName);
+        $metadata  = $this->em->getClassMetadata($className);
+        $persister = $this->uow->getEntityPersister($metadata->rootEntityName);
 
-        if ( ! ($persister instanceof CachedPersister)) {
+        if (! ($persister instanceof CachedPersister)) {
             return false;
         }
 
@@ -122,7 +113,7 @@ class DefaultCache implements Cache
         $metadata  = $this->em->getClassMetadata($className);
         $persister = $this->uow->getEntityPersister($metadata->rootEntityName);
 
-        if ( ! ($persister instanceof CachedPersister)) {
+        if (! ($persister instanceof CachedPersister)) {
             return;
         }
 
@@ -137,7 +128,7 @@ class DefaultCache implements Cache
         $metadata  = $this->em->getClassMetadata($className);
         $persister = $this->uow->getEntityPersister($metadata->rootEntityName);
 
-        if ( ! ($persister instanceof CachedPersister)) {
+        if (! ($persister instanceof CachedPersister)) {
             return;
         }
 
@@ -154,7 +145,7 @@ class DefaultCache implements Cache
         foreach ($metadatas as $metadata) {
             $persister = $this->uow->getEntityPersister($metadata->rootEntityName);
 
-            if ( ! ($persister instanceof CachedPersister)) {
+            if (! ($persister instanceof CachedPersister)) {
                 continue;
             }
 
@@ -170,7 +161,7 @@ class DefaultCache implements Cache
         $metadata  = $this->em->getClassMetadata($className);
         $persister = $this->uow->getCollectionPersister($metadata->getAssociationMapping($association));
 
-        if ( ! ($persister instanceof CachedPersister)) {
+        if (! ($persister instanceof CachedPersister)) {
             return false;
         }
 
@@ -185,7 +176,7 @@ class DefaultCache implements Cache
         $metadata  = $this->em->getClassMetadata($className);
         $persister = $this->uow->getCollectionPersister($metadata->getAssociationMapping($association));
 
-        if ( ! ($persister instanceof CachedPersister)) {
+        if (! ($persister instanceof CachedPersister)) {
             return;
         }
 
@@ -200,7 +191,7 @@ class DefaultCache implements Cache
         $metadata  = $this->em->getClassMetadata($className);
         $persister = $this->uow->getCollectionPersister($metadata->getAssociationMapping($association));
 
-        if ( ! ($persister instanceof CachedPersister)) {
+        if (! ($persister instanceof CachedPersister)) {
             return;
         }
 
@@ -215,16 +206,14 @@ class DefaultCache implements Cache
         $metadatas = $this->em->getMetadataFactory()->getAllMetadata();
 
         foreach ($metadatas as $metadata) {
-
             foreach ($metadata->associationMappings as $association) {
-
-                if ( ! $association['type'] & ClassMetadata::TO_MANY) {
+                if (! $association['type'] & ClassMetadata::TO_MANY) {
                     continue;
                 }
 
                 $persister = $this->uow->getCollectionPersister($association);
 
-                if ( ! ($persister instanceof CachedPersister)) {
+                if (! ($persister instanceof CachedPersister)) {
                     continue;
                 }
 
@@ -279,7 +268,7 @@ class DefaultCache implements Cache
                 $this->defaultQueryCache = $this->cacheFactory->buildQueryCache($this->em);
         }
 
-        if ( ! isset($this->queryCaches[$regionName])) {
+        if (! isset($this->queryCaches[$regionName])) {
             $this->queryCaches[$regionName] = $this->cacheFactory->buildQueryCache($this->em, $regionName);
         }
 
@@ -287,14 +276,12 @@ class DefaultCache implements Cache
     }
 
      /**
-     * @param \Doctrine\ORM\Mapping\ClassMetadata $metadata   The entity metadata.
-     * @param mixed                               $identifier The entity identifier.
-     *
-     * @return \Doctrine\ORM\Cache\EntityCacheKey
-     */
-    private function buildEntityCacheKey(ClassMetadata $metadata, $identifier)
+      * @param ClassMetadata $metadata   The entity metadata.
+      * @param mixed         $identifier The entity identifier.
+      */
+    private function buildEntityCacheKey(ClassMetadata $metadata, $identifier): EntityCacheKey
     {
-        if ( ! is_array($identifier)) {
+        if (! is_array($identifier)) {
             $identifier = $this->toIdentifierArray($metadata, $identifier);
         }
 
@@ -302,15 +289,16 @@ class DefaultCache implements Cache
     }
 
     /**
-     * @param \Doctrine\ORM\Mapping\ClassMetadata $metadata        The entity metadata.
-     * @param string                              $association     The field name that represents the association.
-     * @param mixed                               $ownerIdentifier The identifier of the owning entity.
-     *
-     * @return \Doctrine\ORM\Cache\CollectionCacheKey
+     * @param ClassMetadata $metadata        The entity metadata.
+     * @param string        $association     The field name that represents the association.
+     * @param mixed         $ownerIdentifier The identifier of the owning entity.
      */
-    private function buildCollectionCacheKey(ClassMetadata $metadata, $association, $ownerIdentifier)
-    {
-        if ( ! is_array($ownerIdentifier)) {
+    private function buildCollectionCacheKey(
+        ClassMetadata $metadata,
+        string $association,
+        $ownerIdentifier
+    ): CollectionCacheKey {
+        if (! is_array($ownerIdentifier)) {
             $ownerIdentifier = $this->toIdentifierArray($metadata, $ownerIdentifier);
         }
 
@@ -318,12 +306,12 @@ class DefaultCache implements Cache
     }
 
     /**
-     * @param \Doctrine\ORM\Mapping\ClassMetadata $metadata   The entity metadata.
-     * @param mixed                               $identifier The entity identifier.
+     * @param ClassMetadata $metadata   The entity metadata.
+     * @param mixed         $identifier The entity identifier.
      *
-     * @return array
+     * @return array<string, mixed>
      */
-    private function toIdentifierArray(ClassMetadata $metadata, $identifier)
+    private function toIdentifierArray(ClassMetadata $metadata, $identifier): array
     {
         if (is_object($identifier) && $this->em->getMetadataFactory()->hasMetadataFor(ClassUtils::getClass($identifier))) {
             $identifier = $this->uow->getSingleIdentifierValue($identifier);
@@ -335,5 +323,4 @@ class DefaultCache implements Cache
 
         return [$metadata->identifier[0] => $identifier];
     }
-
 }

lib/Doctrine/ORM/Cache/DefaultCacheFactory.php

@@ -38,42 +38,30 @@ use Doctrine\ORM\EntityManagerInterface;
 use Doctrine\ORM\Mapping\ClassMetadata;
 use Doctrine\ORM\Persisters\Collection\CollectionPersister;
 use Doctrine\ORM\Persisters\Entity\EntityPersister;
+use InvalidArgumentException;
+use LogicException;
+
+use function sprintf;
+
+use const DIRECTORY_SEPARATOR;
 
-/**
- * @since   2.5
- * @author  Fabio B. Silva <fabio.bat.silva@gmail.com>
- */
 class DefaultCacheFactory implements CacheFactory
 {
-    /**
-     * @var CacheAdapter
-     */
+    /** @var CacheAdapter */
     private $cache;
 
-    /**
-     * @var \Doctrine\ORM\Cache\RegionsConfiguration
-     */
+    /** @var RegionsConfiguration */
     private $regionsConfig;
 
-    /**
-     * @var \Doctrine\ORM\Cache\TimestampRegion|null
-     */
+    /** @var TimestampRegion|null */
     private $timestampRegion;
 
-    /**
-     * @var \Doctrine\ORM\Cache\Region[]
-     */
+    /** @var Region[] */
     private $regions = [];
 
-    /**
-     * @var string|null
-     */
+    /** @var string|null */
     private $fileLockRegionDirectory;
 
-    /**
-     * @param RegionsConfiguration $cacheConfig
-     * @param CacheAdapter         $cache
-     */
     public function __construct(RegionsConfiguration $cacheConfig, CacheAdapter $cache)
     {
         $this->cache         = $cache;
@@ -82,6 +70,8 @@ class DefaultCacheFactory implements CacheFactory
 
     /**
      * @param string $fileLockRegionDirectory
+     *
+     * @return void
      */
     public function setFileLockRegionDirectory($fileLockRegionDirectory)
     {
@@ -97,7 +87,7 @@ class DefaultCacheFactory implements CacheFactory
     }
 
     /**
-     * @param \Doctrine\ORM\Cache\Region $region
+     * @return void
      */
     public function setRegion(Region $region)
     {
@@ -105,7 +95,7 @@ class DefaultCacheFactory implements CacheFactory
     }
 
     /**
-     * @param \Doctrine\ORM\Cache\TimestampRegion $region
+     * @return void
      */
     public function setTimestampRegion(TimestampRegion $region)
     {
@@ -117,8 +107,8 @@ class DefaultCacheFactory implements CacheFactory
      */
     public function buildCachedEntityPersister(EntityManagerInterface $em, EntityPersister $persister, ClassMetadata $metadata)
     {
-        $region     = $this->getRegion($metadata->cache);
-        $usage      = $metadata->cache['usage'];
+        $region = $this->getRegion($metadata->cache);
+        $usage  = $metadata->cache['usage'];
 
         if ($usage === ClassMetadata::CACHE_USAGE_READ_ONLY) {
             return new ReadOnlyCachedEntityPersister($persister, $region, $em, $metadata);
@@ -129,10 +119,14 @@ class DefaultCacheFactory implements CacheFactory
         }
 
         if ($usage === ClassMetadata::CACHE_USAGE_READ_WRITE) {
+            if (! $region instanceof ConcurrentRegion) {
+                throw new InvalidArgumentException(sprintf('Unable to use access strategy type of [%s] without a ConcurrentRegion', $usage));
+            }
+
             return new ReadWriteCachedEntityPersister($persister, $region, $em, $metadata);
         }
 
-        throw new \InvalidArgumentException(sprintf("Unrecognized access strategy type [%s]", $usage));
+        throw new InvalidArgumentException(sprintf('Unrecognized access strategy type [%s]', $usage));
     }
 
     /**
@@ -140,8 +134,8 @@ class DefaultCacheFactory implements CacheFactory
      */
     public function buildCachedCollectionPersister(EntityManagerInterface $em, CollectionPersister $persister, array $mapping)
     {
-        $usage      = $mapping['cache']['usage'];
-        $region     = $this->getRegion($mapping['cache']);
+        $usage  = $mapping['cache']['usage'];
+        $region = $this->getRegion($mapping['cache']);
 
         if ($usage === ClassMetadata::CACHE_USAGE_READ_ONLY) {
             return new ReadOnlyCachedCollectionPersister($persister, $region, $em, $mapping);
@@ -152,10 +146,14 @@ class DefaultCacheFactory implements CacheFactory
         }
 
         if ($usage === ClassMetadata::CACHE_USAGE_READ_WRITE) {
+            if (! $region instanceof ConcurrentRegion) {
+                throw new InvalidArgumentException(sprintf('Unable to use access strategy type of [%s] without a ConcurrentRegion', $usage));
+            }
+
             return new ReadWriteCachedCollectionPersister($persister, $region, $em, $mapping);
         }
 
-        throw new \InvalidArgumentException(sprintf("Unrecognized access strategy type [%s]", $usage));
+        throw new InvalidArgumentException(sprintf('Unrecognized access strategy type [%s]', $usage));
     }
 
     /**
@@ -168,7 +166,7 @@ class DefaultCacheFactory implements CacheFactory
             $this->getRegion(
                 [
                     'region' => $regionName ?: Cache::DEFAULT_QUERY_REGION_NAME,
-                    'usage'  => ClassMetadata::CACHE_USAGE_NONSTRICT_READ_WRITE
+                    'usage'  => ClassMetadata::CACHE_USAGE_NONSTRICT_READ_WRITE,
                 ]
             )
         );
@@ -203,45 +201,39 @@ class DefaultCacheFactory implements CacheFactory
         $cacheAdapter = $this->createRegionCache($name);
         $lifetime     = $this->regionsConfig->getLifetime($cache['region']);
 
-        $region = ($cacheAdapter instanceof MultiGetCache)
+        $region = $cacheAdapter instanceof MultiGetCache
             ? new DefaultMultiGetRegion($name, $cacheAdapter, $lifetime)
             : new DefaultRegion($name, $cacheAdapter, $lifetime);
 
         if ($cache['usage'] === ClassMetadata::CACHE_USAGE_READ_WRITE) {
-
             if (
-                '' === $this->fileLockRegionDirectory ||
-                null === $this->fileLockRegionDirectory
+                $this->fileLockRegionDirectory === '' ||
+                $this->fileLockRegionDirectory === null
             ) {
-                throw new \LogicException(
+                throw new LogicException(
                     'If you want to use a "READ_WRITE" cache an implementation of "Doctrine\ORM\Cache\ConcurrentRegion" is required, ' .
                     'The default implementation provided by doctrine is "Doctrine\ORM\Cache\Region\FileLockRegion" if you want to use it please provide a valid directory, DefaultCacheFactory#setFileLockRegionDirectory(). '
                 );
             }
 
             $directory = $this->fileLockRegionDirectory . DIRECTORY_SEPARATOR . $cache['region'];
-            $region    = new FileLockRegion($region, $directory, $this->regionsConfig->getLockLifetime($cache['region']));
+            $region    = new FileLockRegion($region, $directory, (string) $this->regionsConfig->getLockLifetime($cache['region']));
         }
 
         return $this->regions[$cache['region']] = $region;
     }
 
-    /**
-     * @param string $name
-     *
-     * @return CacheAdapter
-     */
-    private function createRegionCache($name)
+    private function createRegionCache(string $name): CacheAdapter
     {
         $cacheAdapter = clone $this->cache;
 
-        if (!$cacheAdapter instanceof CacheProvider) {
+        if (! $cacheAdapter instanceof CacheProvider) {
             return $cacheAdapter;
         }
 
         $namespace = $cacheAdapter->getNamespace();
 
-        if ('' !== $namespace) {
+        if ($namespace !== '') {
             $namespace .= ':';
         }
 

lib/Doctrine/ORM/Cache/DefaultCollectionHydrator.php

@@ -20,36 +20,32 @@
 
 namespace Doctrine\ORM\Cache;
 
-use Doctrine\ORM\Query;
-use Doctrine\ORM\PersistentCollection;
-use Doctrine\ORM\Mapping\ClassMetadata;
+use Doctrine\ORM\Cache\Persister\CachedPersister;
 use Doctrine\ORM\EntityManagerInterface;
+use Doctrine\ORM\Mapping\ClassMetadata;
+use Doctrine\ORM\PersistentCollection;
+use Doctrine\ORM\Query;
+use Doctrine\ORM\UnitOfWork;
+
+use function array_walk;
+use function assert;
 
 /**
  * Default hydrator cache for collections
- *
- * @since   2.5
- * @author  Fabio B. Silva <fabio.bat.silva@gmail.com>
  */
 class DefaultCollectionHydrator implements CollectionHydrator
 {
-    /**
-     * @var \Doctrine\ORM\EntityManagerInterface
-     */
+    /** @var EntityManagerInterface */
     private $em;
 
-    /**
-     * @var \Doctrine\ORM\UnitOfWork
-     */
+    /** @var UnitOfWork */
     private $uow;
 
-    /**
-     * @var array
-     */
+    /** @var array<string,mixed> */
     private static $hints = [Query::HINT_CACHE_ENABLED => true];
 
     /**
-     * @param \Doctrine\ORM\EntityManagerInterface $em The entity manager.
+     * @param EntityManagerInterface $em The entity manager.
      */
     public function __construct(EntityManagerInterface $em)
     {
@@ -77,23 +73,23 @@ class DefaultCollectionHydrator implements CollectionHydrator
     public function loadCacheEntry(ClassMetadata $metadata, CollectionCacheKey $key, CollectionCacheEntry $entry, PersistentCollection $collection)
     {
         $assoc           = $metadata->associationMappings[$key->association];
-        /* @var $targetPersister \Doctrine\ORM\Cache\Persister\CachedPersister */
         $targetPersister = $this->uow->getEntityPersister($assoc['targetEntity']);
-        $targetRegion    = $targetPersister->getCacheRegion();
-        $list            = [];
+        assert($targetPersister instanceof CachedPersister);
+        $targetRegion = $targetPersister->getCacheRegion();
+        $list         = [];
 
+        /** @var EntityCacheEntry[]|null $entityEntries */
         $entityEntries = $targetRegion->getMultiple($entry);
 
         if ($entityEntries === null) {
             return null;
         }
 
-        /* @var $entityEntries \Doctrine\ORM\Cache\EntityCacheEntry[] */
         foreach ($entityEntries as $index => $entityEntry) {
             $list[$index] = $this->uow->createEntity($entityEntry->class, $entityEntry->resolveAssociationEntries($this->em), self::$hints);
         }
 
-        array_walk($list, function($entity, $index) use ($collection) {
+        array_walk($list, static function ($entity, $index) use ($collection) {
             $collection->hydrateSet($index, $entity);
         });
 

lib/Doctrine/ORM/Cache/DefaultEntityHydrator.php

@@ -21,49 +21,45 @@
 namespace Doctrine\ORM\Cache;
 
 use Doctrine\Common\Util\ClassUtils;
-
-use Doctrine\ORM\Query;
-use Doctrine\ORM\Mapping\ClassMetadata;
 use Doctrine\ORM\EntityManagerInterface;
+use Doctrine\ORM\Mapping\ClassMetadata;
+use Doctrine\ORM\Query;
+use Doctrine\ORM\UnitOfWork;
 use Doctrine\ORM\Utility\IdentifierFlattener;
 
+use function array_merge;
+use function is_array;
+use function is_object;
+use function reset;
+
 /**
  * Default hydrator cache for entities
- *
- * @since   2.5
- * @author  Fabio B. Silva <fabio.bat.silva@gmail.com>
  */
 class DefaultEntityHydrator implements EntityHydrator
 {
-    /**
-     * @var \Doctrine\ORM\EntityManagerInterface
-     */
+    /** @var EntityManagerInterface */
     private $em;
 
-    /**
-     * @var \Doctrine\ORM\UnitOfWork
-     */
+    /** @var UnitOfWork */
     private $uow;
 
     /**
      * The IdentifierFlattener used for manipulating identifiers
      *
-     * @var \Doctrine\ORM\Utility\IdentifierFlattener
+     * @var IdentifierFlattener
      */
     private $identifierFlattener;
 
-    /**
-     * @var array
-     */
+    /** @var array<string,mixed> */
     private static $hints = [Query::HINT_CACHE_ENABLED => true];
 
     /**
-     * @param \Doctrine\ORM\EntityManagerInterface $em The entity manager.
+     * @param EntityManagerInterface $em The entity manager.
      */
     public function __construct(EntityManagerInterface $em)
     {
-        $this->em   = $em;
-        $this->uow  = $em->getUnitOfWork();
+        $this->em                  = $em;
+        $this->uow                 = $em->getUnitOfWork();
         $this->identifierFlattener = new IdentifierFlattener($em->getUnitOfWork(), $em->getMetadataFactory());
     }
 
@@ -80,19 +76,19 @@ class DefaultEntityHydrator implements EntityHydrator
         }
 
         foreach ($metadata->associationMappings as $name => $assoc) {
-            if ( ! isset($data[$name])) {
+            if (! isset($data[$name])) {
                 continue;
             }
 
-            if ( ! ($assoc['type'] & ClassMetadata::TO_ONE)) {
+            if (! ($assoc['type'] & ClassMetadata::TO_ONE)) {
                 unset($data[$name]);
 
                 continue;
             }
 
-            if ( ! isset($assoc['cache'])) {
+            if (! isset($assoc['cache'])) {
                 $targetClassMetadata = $this->em->getClassMetadata($assoc['targetEntity']);
-                $owningAssociation   = ( ! $assoc['isOwningSide'])
+                $owningAssociation   = ! $assoc['isOwningSide']
                     ? $targetClassMetadata->associationMappings[$assoc['mappedBy']]
                     : $assoc;
                 $associationIds      = $this->identifierFlattener->flattenIdentifier(
@@ -113,7 +109,7 @@ class DefaultEntityHydrator implements EntityHydrator
 
                     $targetAssoc = $targetClassMetadata->associationMappings[$fieldName];
 
-                    foreach($assoc['targetToSourceKeyColumns'] as $referencedColumn => $localColumn) {
+                    foreach ($assoc['targetToSourceKeyColumns'] as $referencedColumn => $localColumn) {
                         if (isset($targetAssoc['sourceToTargetKeyColumns'][$referencedColumn])) {
                             $data[$localColumn] = $fieldValue;
                         }
@@ -123,7 +119,7 @@ class DefaultEntityHydrator implements EntityHydrator
                 continue;
             }
 
-            if ( ! isset($assoc['id'])) {
+            if (! isset($assoc['id'])) {
                 $targetClass = ClassUtils::getClass($data[$name]);
                 $targetId    = $this->uow->getEntityIdentifier($data[$name]);
                 $data[$name] = new AssociationCacheEntry($targetClass, $targetId);
@@ -138,7 +134,7 @@ class DefaultEntityHydrator implements EntityHydrator
 
             // @TODO - fix it !
             // handle UnitOfWork#createEntity hash generation
-            if ( ! is_array($targetId)) {
+            if (! is_array($targetId)) {
                 $data[reset($assoc['joinColumnFieldNames'])] = $targetId;
 
                 $targetEntity = $this->em->getClassMetadata($assoc['targetEntity']);
@@ -160,20 +156,20 @@ class DefaultEntityHydrator implements EntityHydrator
         $hints = self::$hints;
 
         if ($entity !== null) {
-            $hints[Query::HINT_REFRESH]         = true;
-            $hints[Query::HINT_REFRESH_ENTITY]  = $entity;
+            $hints[Query::HINT_REFRESH]        = true;
+            $hints[Query::HINT_REFRESH_ENTITY] = $entity;
         }
 
         foreach ($metadata->associationMappings as $name => $assoc) {
-            if ( ! isset($assoc['cache']) ||  ! isset($data[$name])) {
+            if (! isset($assoc['cache']) || ! isset($data[$name])) {
                 continue;
             }
 
-            $assocClass     = $data[$name]->class;
-            $assocId        = $data[$name]->identifier;
-            $isEagerLoad    = ($assoc['fetch'] === ClassMetadata::FETCH_EAGER || ($assoc['type'] === ClassMetadata::ONE_TO_ONE && ! $assoc['isOwningSide']));
+            $assocClass  = $data[$name]->class;
+            $assocId     = $data[$name]->identifier;
+            $isEagerLoad = ($assoc['fetch'] === ClassMetadata::FETCH_EAGER || ($assoc['type'] === ClassMetadata::ONE_TO_ONE && ! $assoc['isOwningSide']));
 
-            if ( ! $isEagerLoad) {
+            if (! $isEagerLoad) {
                 $data[$name] = $this->em->getReference($assocClass, $assocId);
 
                 continue;

lib/Doctrine/ORM/Cache/DefaultQueryCache.php

@@ -21,68 +21,63 @@
 namespace Doctrine\ORM\Cache;
 
 use Doctrine\Common\Collections\ArrayCollection;
-use Doctrine\ORM\Cache\Persister\CachedPersister;
-use Doctrine\ORM\Cache\Persister\Entity\CachedEntityPersister;
-use Doctrine\ORM\EntityManagerInterface;
-use Doctrine\ORM\Query\ResultSetMapping;
-use Doctrine\ORM\Mapping\ClassMetadata;
-use Doctrine\ORM\PersistentCollection;
 use Doctrine\Common\Proxy\Proxy;
 use Doctrine\ORM\Cache;
+use Doctrine\ORM\Cache\Logging\CacheLogger;
+use Doctrine\ORM\Cache\Persister\Entity\CachedEntityPersister;
+use Doctrine\ORM\EntityManagerInterface;
+use Doctrine\ORM\Mapping\ClassMetadata;
+use Doctrine\ORM\PersistentCollection;
 use Doctrine\ORM\Query;
+use Doctrine\ORM\Query\ResultSetMapping;
+use Doctrine\ORM\UnitOfWork;
+
+use function array_key_exists;
+use function array_map;
+use function array_shift;
+use function array_unshift;
 use function assert;
+use function count;
+use function is_array;
+use function key;
+use function reset;
 
 /**
  * Default query cache implementation.
- *
- * @since   2.5
- * @author  Fabio B. Silva <fabio.bat.silva@gmail.com>
  */
 class DefaultQueryCache implements QueryCache
 {
-     /**
-     * @var \Doctrine\ORM\EntityManagerInterface
-     */
+     /** @var EntityManagerInterface */
     private $em;
 
-    /**
-     * @var \Doctrine\ORM\UnitOfWork
-     */
+    /** @var UnitOfWork */
     private $uow;
 
-    /**
-     * @var \Doctrine\ORM\Cache\Region
-     */
+    /** @var Region */
     private $region;
 
-    /**
-     * @var \Doctrine\ORM\Cache\QueryCacheValidator
-     */
+    /** @var QueryCacheValidator */
     private $validator;
 
-    /**
-     * @var \Doctrine\ORM\Cache\Logging\CacheLogger
-     */
+    /** @var CacheLogger */
     protected $cacheLogger;
 
-    /**
-     * @var array
-     */
+    /** @var array<string,mixed> */
     private static $hints = [Query::HINT_CACHE_ENABLED => true];
 
     /**
-     * @param \Doctrine\ORM\EntityManagerInterface $em     The entity manager.
-     * @param \Doctrine\ORM\Cache\Region           $region The query region.
+     * @param EntityManagerInterface $em     The entity manager.
+     * @param Region                 $region The query region.
      */
     public function __construct(EntityManagerInterface $em, Region $region)
     {
         $cacheConfig = $em->getConfiguration()->getSecondLevelCacheConfiguration();
 
-        $this->em           = $em;
-        $this->region       = $region;
-        $this->uow          = $em->getUnitOfWork();
-        $this->cacheLogger  = $cacheConfig->getCacheLogger();
-        $this->validator    = $cacheConfig->getQueryValidator();
+        $this->em          = $em;
+        $this->region      = $region;
+        $this->uow         = $em->getUnitOfWork();
+        $this->cacheLogger = $cacheConfig->getCacheLogger();
+        $this->validator   = $cacheConfig->getQueryValidator();
     }
 
     /**
@@ -90,17 +85,17 @@ class DefaultQueryCache implements QueryCache
      */
     public function get(QueryCacheKey $key, ResultSetMapping $rsm, array $hints = [])
     {
-        if ( ! ($key->cacheMode & Cache::MODE_GET)) {
+        if (! ($key->cacheMode & Cache::MODE_GET)) {
             return null;
         }
 
         $cacheEntry = $this->region->get($key);
 
-        if ( ! $cacheEntry instanceof QueryCacheEntry) {
+        if (! $cacheEntry instanceof QueryCacheEntry) {
             return null;
         }
 
-        if ( ! $this->validator->isValid($key, $cacheEntry)) {
+        if (! $this->validator->isValid($key, $cacheEntry)) {
             $this->region->evict($key);
 
             return null;
@@ -117,7 +112,7 @@ class DefaultQueryCache implements QueryCache
 
         $cm = $this->em->getClassMetadata($entityName);
 
-        $generateKeys = static function (array $entry) use ($cm) : EntityCacheKey {
+        $generateKeys = static function (array $entry) use ($cm): EntityCacheKey {
             return new EntityCacheKey($cm->rootEntityName, $entry['identifier']);
         };
 
@@ -140,8 +135,8 @@ class DefaultQueryCache implements QueryCache
                 $this->cacheLogger->entityCacheHit($regionName, $cacheKeys->identifiers[$index]);
             }
 
-            if ( ! $hasRelation) {
-                $result[$index]  = $this->uow->createEntity($entityEntry->class, $entityEntry->resolveAssociationEntries($this->em), self::$hints);
+            if (! $hasRelation) {
+                $result[$index] = $this->uow->createEntity($entityEntry->class, $entityEntry->resolveAssociationEntries($this->em), self::$hints);
 
                 continue;
             }
@@ -156,9 +151,10 @@ class DefaultQueryCache implements QueryCache
                 $assocMetadata = $this->em->getClassMetadata($assoc['targetEntity']);
 
                 if ($assoc['type'] & ClassMetadata::TO_ONE) {
+                    $assocKey   = new EntityCacheKey($assocMetadata->rootEntityName, $assoc['identifier']);
+                    $assocEntry = $assocRegion->get($assocKey);
 
-                    if (($assocEntry = $assocRegion->get($assocKey = new EntityCacheKey($assocMetadata->rootEntityName, $assoc['identifier']))) === null) {
-
+                    if ($assocEntry === null) {
                         if ($this->cacheLogger !== null) {
                             $this->cacheLogger->entityCacheMiss($assocRegion->getName(), $assocKey);
                         }
@@ -177,11 +173,11 @@ class DefaultQueryCache implements QueryCache
                     continue;
                 }
 
-                if ( ! isset($assoc['list']) || empty($assoc['list'])) {
+                if (! isset($assoc['list']) || empty($assoc['list'])) {
                     continue;
                 }
 
-                $generateKeys = function ($id) use ($assocMetadata): EntityCacheKey {
+                $generateKeys = static function ($id) use ($assocMetadata): EntityCacheKey {
                     return new EntityCacheKey($assocMetadata->rootEntityName, $id);
                 };
 
@@ -249,29 +245,29 @@ class DefaultQueryCache implements QueryCache
     public function put(QueryCacheKey $key, ResultSetMapping $rsm, $result, array $hints = [])
     {
         if ($rsm->scalarMappings) {
-            throw new CacheException("Second level cache does not support scalar results.");
+            throw new CacheException('Second level cache does not support scalar results.');
         }
 
         if (count($rsm->entityMappings) > 1) {
-            throw new CacheException("Second level cache does not support multiple root entities.");
+            throw new CacheException('Second level cache does not support multiple root entities.');
         }
 
-        if ( ! $rsm->isSelect) {
-            throw new CacheException("Second-level cache query supports only select statements.");
+        if (! $rsm->isSelect) {
+            throw new CacheException('Second-level cache query supports only select statements.');
         }
 
         if (($hints[Query\SqlWalker::HINT_PARTIAL] ?? false) === true || ($hints[Query::HINT_FORCE_PARTIAL_LOAD] ?? false) === true) {
-            throw new CacheException("Second level cache does not support partial entities.");
+            throw new CacheException('Second level cache does not support partial entities.');
         }
 
-        if ( ! ($key->cacheMode & Cache::MODE_PUT)) {
+        if (! ($key->cacheMode & Cache::MODE_PUT)) {
             return false;
         }
 
-        $data        = [];
-        $entityName  = reset($rsm->aliasMap);
-        $rootAlias   = key($rsm->aliasMap);
-        $persister   = $this->uow->getEntityPersister($entityName);
+        $data       = [];
+        $entityName = reset($rsm->aliasMap);
+        $rootAlias  = key($rsm->aliasMap);
+        $persister  = $this->uow->getEntityPersister($entityName);
 
         if (! $persister instanceof CachedEntityPersister) {
             throw CacheException::nonCacheableEntity($entityName);
@@ -288,7 +284,7 @@ class DefaultQueryCache implements QueryCache
 
             if (($key->cacheMode & Cache::MODE_REFRESH) || ! $region->contains($entityKey)) {
                 // Cancel put result if entity put fail
-                if ( ! $persister->storeEntityCache($entity, $entityKey)) {
+                if (! $persister->storeEntityCache($entity, $entityKey)) {
                     return false;
                 }
             }
@@ -298,11 +294,11 @@ class DefaultQueryCache implements QueryCache
 
             // @TODO - move to cache hydration components
             foreach ($rsm->relationMap as $alias => $name) {
-                $parentAlias  = $rsm->parentAliasMap[$alias];
-                $parentClass  = $rsm->aliasMap[$parentAlias];
-                $metadata     = $this->em->getClassMetadata($parentClass);
-                $assoc        = $metadata->associationMappings[$name];
-                $assocValue   = $this->getAssociationValue($rsm, $alias, $entity);
+                $parentAlias = $rsm->parentAliasMap[$alias];
+                $parentClass = $rsm->aliasMap[$parentAlias];
+                $metadata    = $this->em->getClassMetadata($parentClass);
+                $assoc       = $metadata->associationMappings[$name];
+                $assocValue  = $this->getAssociationValue($rsm, $alias, $entity);
 
                 if ($assocValue === null) {
                     continue;
@@ -311,7 +307,8 @@ class DefaultQueryCache implements QueryCache
                 // root entity association
                 if ($rootAlias === $parentAlias) {
                     // Cancel put result if association put fail
-                    if ( ($assocInfo = $this->storeAssociationCache($key, $assoc, $assocValue)) === null) {
+                    $assocInfo = $this->storeAssociationCache($key, $assoc, $assocValue);
+                    if ($assocInfo === null) {
                         return false;
                     }
 
@@ -321,7 +318,7 @@ class DefaultQueryCache implements QueryCache
                 }
 
                 // store single nested association
-                if ( ! is_array($assocValue)) {
+                if (! is_array($assocValue)) {
                     // Cancel put result if association put fail
                     if ($this->storeAssociationCache($key, $assoc, $assocValue) === null) {
                         return false;
@@ -344,15 +341,13 @@ class DefaultQueryCache implements QueryCache
     }
 
     /**
-     * @param \Doctrine\ORM\Cache\QueryCacheKey $key
-     * @param array                             $assoc
-     * @param mixed                             $assocValue
+     * @param array<string,mixed> $assoc
+     * @param mixed               $assocValue
      *
      * @return mixed[]|null
-     *
-     * @psalm-return array{targetEntity: string, type: mixed, list?: array[], identifier?: array}|null
+     * @psalm-return array{targetEntity: class-string, type: mixed, list?: array[], identifier?: array}|null
      */
-    private function storeAssociationCache(QueryCacheKey $key, array $assoc, $assocValue)
+    private function storeAssociationCache(QueryCacheKey $key, array $assoc, $assocValue): ?array
     {
         $assocPersister = $this->uow->getEntityPersister($assoc['targetEntity']);
         $assocMetadata  = $assocPersister->getClassMetadata();
@@ -363,9 +358,9 @@ class DefaultQueryCache implements QueryCache
             $assocIdentifier = $this->uow->getEntityIdentifier($assocValue);
             $entityKey       = new EntityCacheKey($assocMetadata->rootEntityName, $assocIdentifier);
 
-            if ( ! $assocValue instanceof Proxy && ($key->cacheMode & Cache::MODE_REFRESH) || ! $assocRegion->contains($entityKey)) {
+            if (! $assocValue instanceof Proxy && ($key->cacheMode & Cache::MODE_REFRESH) || ! $assocRegion->contains($entityKey)) {
                 // Entity put fail
-                if ( ! $assocPersister->storeEntityCache($assocValue, $entityKey)) {
+                if (! $assocPersister->storeEntityCache($assocValue, $entityKey)) {
                     return null;
                 }
             }
@@ -373,7 +368,7 @@ class DefaultQueryCache implements QueryCache
             return [
                 'targetEntity'  => $assocMetadata->rootEntityName,
                 'identifier'    => $assocIdentifier,
-                'type'          => $assoc['type']
+                'type'          => $assoc['type'],
             ];
         }
 
@@ -386,7 +381,7 @@ class DefaultQueryCache implements QueryCache
 
             if (($key->cacheMode & Cache::MODE_REFRESH) || ! $assocRegion->contains($entityKey)) {
                 // Entity put fail
-                if ( ! $assocPersister->storeEntityCache($assocItem, $entityKey)) {
+                if (! $assocPersister->storeEntityCache($assocItem, $entityKey)) {
                     return null;
                 }
             }
@@ -402,14 +397,15 @@ class DefaultQueryCache implements QueryCache
     }
 
     /**
-     * @param \Doctrine\ORM\Query\ResultSetMapping $rsm
-     * @param string                               $assocAlias
-     * @param object                               $entity
+     * @param object $entity
      *
-     * @return array|object
+     * @return array<object>|object
      */
-    private function getAssociationValue(ResultSetMapping $rsm, $assocAlias, $entity)
-    {
+    private function getAssociationValue(
+        ResultSetMapping $rsm,
+        string $assocAlias,
+        $entity
+    ) {
         $path  = [];
         $alias = $assocAlias;
 
@@ -420,9 +416,8 @@ class DefaultQueryCache implements QueryCache
 
             array_unshift($path, [
                 'field'  => $field,
-                'class'  => $class
-            ]
-            );
+                'class'  => $class,
+            ]);
 
             $alias = $parent;
         }
@@ -431,10 +426,10 @@ class DefaultQueryCache implements QueryCache
     }
 
     /**
-     * @param mixed $value
-     * @param array $path
+     * @param mixed        $value
+     * @param array<mixed> $path
      *
-     * @return array|object|null
+     * @return mixed
      */
     private function getAssociationPathValue($value, array $path)
     {
@@ -447,7 +442,7 @@ class DefaultQueryCache implements QueryCache
             return null;
         }
 
-        if (empty($path)) {
+        if ($path === []) {
             return $value;
         }
 

lib/Doctrine/ORM/Cache/EntityCacheEntry.php

@@ -22,18 +22,17 @@ namespace Doctrine\ORM\Cache;
 
 use Doctrine\ORM\EntityManagerInterface;
 
+use function array_map;
+
 /**
  * Entity cache entry
- *
- * @since   2.5
- * @author  Fabio B. Silva <fabio.bat.silva@gmail.com>
  */
 class EntityCacheEntry implements CacheEntry
 {
     /**
      * READ-ONLY: Public only for performance reasons, it should be considered immutable.
      *
-     * @var array The entity map data
+     * @var array<string,mixed> The entity map data
      */
     public $data;
 
@@ -41,12 +40,14 @@ class EntityCacheEntry implements CacheEntry
      * READ-ONLY: Public only for performance reasons, it should be considered immutable.
      *
      * @var string The entity class name
+     * @psalm-var class-string
      */
     public $class;
 
     /**
-     * @param string $class The entity class.
-     * @param array  $data  The entity data.
+     * @param string              $class The entity class.
+     * @param array<string,mixed> $data  The entity data.
+     * @psalm-param class-string $class
      */
     public function __construct($class, array $data)
     {
@@ -59,7 +60,7 @@ class EntityCacheEntry implements CacheEntry
      *
      * This method allow Doctrine\Common\Cache\PhpFileCache compatibility
      *
-     * @param array $values array containing property values
+     * @param array<string,mixed> $values array containing property values
      *
      * @return EntityCacheEntry
      */
@@ -71,14 +72,12 @@ class EntityCacheEntry implements CacheEntry
     /**
      * Retrieves the entity data resolving cache entries
      *
-     * @param \Doctrine\ORM\EntityManagerInterface $em
-     *
-     * @return array
+     * @return array<string, mixed>
      */
     public function resolveAssociationEntries(EntityManagerInterface $em)
     {
-        return array_map(function($value) use ($em) {
-            if ( ! ($value instanceof AssociationCacheEntry)) {
+        return array_map(static function ($value) use ($em) {
+            if (! ($value instanceof AssociationCacheEntry)) {
                 return $value;
             }
 

lib/Doctrine/ORM/Cache/EntityCacheKey.php

@@ -20,18 +20,20 @@
 
 namespace Doctrine\ORM\Cache;
 
+use function implode;
+use function ksort;
+use function str_replace;
+use function strtolower;
+
 /**
  * Defines entity classes roles to be stored in the cache region.
- *
- * @since   2.5
- * @author  Fabio B. Silva <fabio.bat.silva@gmail.com>
  */
 class EntityCacheKey extends CacheKey
 {
     /**
      * READ-ONLY: Public only for performance reasons, it should be considered immutable.
      *
-     * @var array The entity identifier
+     * @var array<string, mixed> The entity identifier
      */
     public $identifier;
 
@@ -43,8 +45,8 @@ class EntityCacheKey extends CacheKey
     public $entityClass;
 
     /**
-     * @param string $entityClass The entity class name. In a inheritance hierarchy it should always be the root entity class.
-     * @param array  $identifier  The entity identifier
+     * @param string               $entityClass The entity class name. In a inheritance hierarchy it should always be the root entity class.
+     * @param array<string, mixed> $identifier  The entity identifier
      */
     public function __construct($entityClass, array $identifier)
     {

lib/Doctrine/ORM/Cache/EntityHydrator.php

@@ -24,26 +24,23 @@ use Doctrine\ORM\Mapping\ClassMetadata;
 
 /**
  * Hydrator cache entry for entities
- *
- * @since   2.5
- * @author  Fabio B. Silva <fabio.bat.silva@gmail.com>
  */
 interface EntityHydrator
 {
     /**
-     * @param \Doctrine\ORM\Mapping\ClassMetadata $metadata The entity metadata.
-     * @param \Doctrine\ORM\Cache\EntityCacheKey  $key      The entity cache key.
-     * @param object                              $entity   The entity.
+     * @param ClassMetadata  $metadata The entity metadata.
+     * @param EntityCacheKey $key      The entity cache key.
+     * @param object         $entity   The entity.
      *
-     * @return \Doctrine\ORM\Cache\EntityCacheEntry
+     * @return EntityCacheEntry
      */
     public function buildCacheEntry(ClassMetadata $metadata, EntityCacheKey $key, $entity);
 
     /**
-     * @param \Doctrine\ORM\Mapping\ClassMetadata  $metadata The entity metadata.
-     * @param \Doctrine\ORM\Cache\EntityCacheKey   $key      The entity cache key.
-     * @param \Doctrine\ORM\Cache\EntityCacheEntry $entry    The entity cache entry.
-     * @param object                               $entity   The entity to load the cache into. If not specified, a new entity is created.
+     * @param ClassMetadata    $metadata The entity metadata.
+     * @param EntityCacheKey   $key      The entity cache key.
+     * @param EntityCacheEntry $entry    The entity cache entry.
+     * @param object           $entity   The entity to load the cache into. If not specified, a new entity is created.
      */
     public function loadCacheEntry(ClassMetadata $metadata, EntityCacheKey $key, EntityCacheEntry $entry, $entity = null);
 }

lib/Doctrine/ORM/Cache/Lock.php

@@ -20,27 +20,23 @@
 
 namespace Doctrine\ORM\Cache;
 
+use function time;
+use function uniqid;
+
 /**
  * Cache Lock
- *
- * @since   2.5
- * @author  Fabio B. Silva <fabio.bat.silva@gmail.com>
  */
 class Lock
 {
-    /**
-     * @var string
-     */
+    /** @var string */
     public $value;
 
-    /**
-     * @var integer
-     */
+    /** @var int */
     public $time;
 
     /**
-     * @param string  $value
-     * @param integer $time
+     * @param string $value
+     * @param int    $time
      */
     public function __construct($value, $time = null)
     {
@@ -49,7 +45,7 @@ class Lock
     }
 
     /**
-     * @return \Doctrine\ORM\Cache\Lock
+     * @return Lock
      */
     public static function createLockRead()
     {

lib/Doctrine/ORM/Cache/LockException.php

@@ -22,11 +22,7 @@ namespace Doctrine\ORM\Cache;
 
 /**
  * Lock exception for cache.
- *
- * @since   2.5
- * @author  Fabio B. Silva <fabio.bat.silva@gmail.com>
  */
 class LockException extends CacheException
 {
-
 }

lib/Doctrine/ORM/Cache/Logging/CacheLogger.php

@@ -26,81 +26,78 @@ use Doctrine\ORM\Cache\QueryCacheKey;
 
 /**
  * Interface for logging.
- *
- * @since   2.5
- * @author  Fabio B. Silva <fabio.bat.silva@gmail.com>
  */
 interface CacheLogger
 {
     /**
      * Log an entity put into second level cache.
      *
-     * @param string                             $regionName The name of the cache region.
-     * @param \Doctrine\ORM\Cache\EntityCacheKey $key        The cache key of the entity.
+     * @param string         $regionName The name of the cache region.
+     * @param EntityCacheKey $key        The cache key of the entity.
      */
     public function entityCachePut($regionName, EntityCacheKey $key);
 
     /**
      * Log an entity get from second level cache resulted in a hit.
      *
-     * @param string                             $regionName The name of the cache region.
-     * @param \Doctrine\ORM\Cache\EntityCacheKey $key        The cache key of the entity.
+     * @param string         $regionName The name of the cache region.
+     * @param EntityCacheKey $key        The cache key of the entity.
      */
     public function entityCacheHit($regionName, EntityCacheKey $key);
 
     /**
      * Log an entity get from second level cache resulted in a miss.
      *
-     * @param string                             $regionName The name of the cache region.
-     * @param \Doctrine\ORM\Cache\EntityCacheKey $key        The cache key of the entity.
+     * @param string         $regionName The name of the cache region.
+     * @param EntityCacheKey $key        The cache key of the entity.
      */
     public function entityCacheMiss($regionName, EntityCacheKey $key);
 
      /**
-     * Log an entity put into second level cache.
-     *
-     * @param string                                 $regionName The name of the cache region.
-     * @param \Doctrine\ORM\Cache\CollectionCacheKey $key        The cache key of the collection.
-     */
+      * Log an entity put into second level cache.
+      *
+      * @param string             $regionName The name of the cache region.
+      * @param CollectionCacheKey $key        The cache key of the collection.
+      */
     public function collectionCachePut($regionName, CollectionCacheKey $key);
 
     /**
      * Log an entity get from second level cache resulted in a hit.
      *
-     * @param string                                 $regionName The name of the cache region.
-     * @param \Doctrine\ORM\Cache\CollectionCacheKey $key        The cache key of the collection.
+     * @param string             $regionName The name of the cache region.
+     * @param CollectionCacheKey $key        The cache key of the collection.
      */
     public function collectionCacheHit($regionName, CollectionCacheKey $key);
 
     /**
      * Log an entity get from second level cache resulted in a miss.
      *
-     * @param string                                 $regionName The name of the cache region.
-     * @param \Doctrine\ORM\Cache\CollectionCacheKey $key        The cache key of the collection.
+     * @param string             $regionName The name of the cache region.
+     * @param CollectionCacheKey $key        The cache key of the collection.
      */
     public function collectionCacheMiss($regionName, CollectionCacheKey $key);
 
     /**
      * Log a query put into the query cache.
      *
-     * @param string                            $regionName The name of the cache region.
-     * @param \Doctrine\ORM\Cache\QueryCacheKey $key        The cache key of the query.
+     * @param string        $regionName The name of the cache region.
+     * @param QueryCacheKey $key        The cache key of the query.
      */
     public function queryCachePut($regionName, QueryCacheKey $key);
 
     /**
      * Log a query get from the query cache resulted in a hit.
      *
-     * @param string                            $regionName The name of the cache region.
-     * @param \Doctrine\ORM\Cache\QueryCacheKey $key        The cache key of the query.
+     * @param string        $regionName The name of the cache region.
+     * @param QueryCacheKey $key        The cache key of the query.
      */
     public function queryCacheHit($regionName, QueryCacheKey $key);
 
     /**
      * Log a query get from the query cache resulted in a miss.
      *
-     * @param string                            $regionName The name of the cache region.
-     * @param \Doctrine\ORM\Cache\QueryCacheKey $key        The cache key of the query.
+     * @param string        $regionName The name of the cache region.
+     * @param QueryCacheKey $key        The cache key of the query.
      */
     public function queryCacheMiss($regionName, QueryCacheKey $key);
 }

lib/Doctrine/ORM/Cache/Logging/CacheLoggerChain.php

@@ -26,20 +26,16 @@ use Doctrine\ORM\Cache\QueryCacheKey;
 
 /**
  * Cache logger chain
- *
- * @since   2.5
- * @author  Fabio B. Silva <fabio.bat.silva@gmail.com>
  */
 class CacheLoggerChain implements CacheLogger
 {
-    /**
-     * @var array<\Doctrine\ORM\Cache\Logging\CacheLogger>
-     */
+    /** @var array<CacheLogger> */
     private $loggers = [];
 
     /**
-     * @param string                                  $name
-     * @param \Doctrine\ORM\Cache\Logging\CacheLogger $logger
+     * @param string $name
+     *
+     * @return void
      */
     public function setLogger($name, CacheLogger $logger)
     {
@@ -49,15 +45,15 @@ class CacheLoggerChain implements CacheLogger
     /**
      * @param string $name
      *
-     * @return \Doctrine\ORM\Cache\Logging\CacheLogger|null
+     * @return CacheLogger|null
      */
     public function getLogger($name)
     {
-        return isset($this->loggers[$name]) ? $this->loggers[$name] : null;
+        return $this->loggers[$name] ?? null;
     }
 
     /**
-     * @return array<\Doctrine\ORM\Cache\Logging\CacheLogger>
+     * @return array<CacheLogger>
      */
     public function getLoggers()
     {

lib/Doctrine/ORM/Cache/Logging/StatisticsCacheLogger.php

@@ -24,27 +24,20 @@ use Doctrine\ORM\Cache\CollectionCacheKey;
 use Doctrine\ORM\Cache\EntityCacheKey;
 use Doctrine\ORM\Cache\QueryCacheKey;
 
+use function array_sum;
+
 /**
  * Provide basic second level cache statistics.
- *
- * @since   2.5
- * @author  Fabio B. Silva <fabio.bat.silva@gmail.com>
  */
 class StatisticsCacheLogger implements CacheLogger
 {
-    /**
-     * @var int[]
-     */
+    /** @var int[] */
     private $cacheMissCountMap = [];
 
-    /**
-     * @var int[]
-     */
+    /** @var int[] */
     private $cacheHitCountMap = [];
 
-    /**
-     * @var int[]
-     */
+    /** @var int[] */
     private $cachePutCountMap = [];
 
     /**
@@ -146,7 +139,7 @@ class StatisticsCacheLogger implements CacheLogger
      */
     public function getRegionHitCount($regionName)
     {
-        return isset($this->cacheHitCountMap[$regionName]) ? $this->cacheHitCountMap[$regionName] : 0;
+        return $this->cacheHitCountMap[$regionName] ?? 0;
     }
 
     /**
@@ -158,7 +151,7 @@ class StatisticsCacheLogger implements CacheLogger
      */
     public function getRegionMissCount($regionName)
     {
-        return isset($this->cacheMissCountMap[$regionName]) ? $this->cacheMissCountMap[$regionName] : 0;
+        return $this->cacheMissCountMap[$regionName] ?? 0;
     }
 
     /**
@@ -170,11 +163,11 @@ class StatisticsCacheLogger implements CacheLogger
      */
     public function getRegionPutCount($regionName)
     {
-        return isset($this->cachePutCountMap[$regionName]) ? $this->cachePutCountMap[$regionName] : 0;
+        return $this->cachePutCountMap[$regionName] ?? 0;
     }
 
     /**
-     * @return array
+     * @return array<string, int>
      */
     public function getRegionsMiss()
     {
@@ -182,7 +175,7 @@ class StatisticsCacheLogger implements CacheLogger
     }
 
     /**
-     * @return array
+     * @return array<string, int>
      */
     public function getRegionsHit()
     {
@@ -190,7 +183,7 @@ class StatisticsCacheLogger implements CacheLogger
     }
 
     /**
-     * @return array
+     * @return array<string, int>
      */
     public function getRegionsPut()
     {
@@ -201,6 +194,8 @@ class StatisticsCacheLogger implements CacheLogger
      * Clear region statistics
      *
      * @param string $regionName The name of the cache region.
+     *
+     * @return void
      */
     public function clearRegionStats($regionName)
     {
@@ -211,6 +206,8 @@ class StatisticsCacheLogger implements CacheLogger
 
     /**
      * Clear all statistics
+     *
+     * @return void
      */
     public function clearStats()
     {

lib/Doctrine/ORM/Cache/MultiGetRegion.php

@@ -24,9 +24,6 @@ namespace Doctrine\ORM\Cache;
  * Defines a region that supports multi-get reading.
  *
  * With one method call we can get multiple items.
- *
- * @since   2.5
- * @author  Asmir Mustafic
  */
 interface MultiGetRegion
 {

lib/Doctrine/ORM/Cache/Persister/CachedPersister.php

@@ -1,4 +1,5 @@
 <?php
+
 /*
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
@@ -19,11 +20,10 @@
 
 namespace Doctrine\ORM\Cache\Persister;
 
+use Doctrine\ORM\Cache\Region;
+
 /**
  * Interface for persister that support second level cache.
- *
- * @since   2.5
- * @author  Fabio B. Silva <fabio.bat.silva@gmail.com>
  */
 interface CachedPersister
 {
@@ -40,7 +40,7 @@ interface CachedPersister
     /**
      * Gets the The region access.
      *
-     * @return \Doctrine\ORM\Cache\Region
+     * @return Region
      */
     public function getCacheRegion();
 }

lib/Doctrine/ORM/Cache/Persister/Collection/AbstractCollectionPersister.php

@@ -21,99 +21,82 @@
 namespace Doctrine\ORM\Cache\Persister\Collection;
 
 use Doctrine\Common\Collections\Criteria;
-use Doctrine\ORM\Cache\EntityCacheKey;
-use Doctrine\ORM\Cache\CollectionCacheKey;
-use Doctrine\ORM\Cache\Persister\Entity\CachedEntityPersister;
-use Doctrine\ORM\Persisters\Collection\CollectionPersister;
-use Doctrine\ORM\PersistentCollection;
-use Doctrine\ORM\EntityManagerInterface;
-use Doctrine\ORM\Cache\Region;
 use Doctrine\Common\Util\ClassUtils;
+use Doctrine\ORM\Cache\CollectionCacheKey;
+use Doctrine\ORM\Cache\CollectionHydrator;
+use Doctrine\ORM\Cache\EntityCacheKey;
+use Doctrine\ORM\Cache\Logging\CacheLogger;
+use Doctrine\ORM\Cache\Persister\Entity\CachedEntityPersister;
+use Doctrine\ORM\Cache\Region;
+use Doctrine\ORM\EntityManagerInterface;
+use Doctrine\ORM\Mapping\ClassMetadata;
+use Doctrine\ORM\Mapping\ClassMetadataFactory;
+use Doctrine\ORM\PersistentCollection;
+use Doctrine\ORM\Persisters\Collection\CollectionPersister;
+use Doctrine\ORM\UnitOfWork;
+
+use function array_values;
+use function assert;
+use function count;
+use function is_array;
 
-/**
- * @author Fabio B. Silva <fabio.bat.silva@gmail.com>
- * @author Guilherme Blanco <guilhermeblanco@hotmail.com>
- * @since 2.5
- */
 abstract class AbstractCollectionPersister implements CachedCollectionPersister
 {
-     /**
-     * @var \Doctrine\ORM\UnitOfWork
-     */
+     /** @var UnitOfWork */
     protected $uow;
 
-    /**
-     * @var \Doctrine\ORM\Mapping\ClassMetadataFactory
-     */
+    /** @var ClassMetadataFactory */
     protected $metadataFactory;
 
-    /**
-     * @var \Doctrine\ORM\Persisters\Collection\CollectionPersister
-     */
+    /** @var CollectionPersister */
     protected $persister;
 
-    /**
-     * @var \Doctrine\ORM\Mapping\ClassMetadata
-     */
+    /** @var ClassMetadata */
     protected $sourceEntity;
 
-    /**
-     * @var \Doctrine\ORM\Mapping\ClassMetadata
-     */
+    /** @var ClassMetadata */
     protected $targetEntity;
 
-    /**
-     * @var array
-     */
+    /** @var mixed[] */
     protected $association;
 
-     /**
-     * @var array
-     */
+     /** @var mixed[] */
     protected $queuedCache = [];
 
-    /**
-     * @var \Doctrine\ORM\Cache\Region
-     */
+    /** @var Region */
     protected $region;
 
-    /**
-     * @var string
-     */
+    /** @var string */
     protected $regionName;
 
-    /**
-     * @var \Doctrine\ORM\Cache\CollectionHydrator
-     */
+    /** @var CollectionHydrator */
     protected $hydrator;
 
-    /**
-     * @var \Doctrine\ORM\Cache\Logging\CacheLogger
-     */
+    /** @var CacheLogger|null */
     protected $cacheLogger;
 
     /**
-     * @param \Doctrine\ORM\Persisters\Collection\CollectionPersister $persister   The collection persister that will be cached.
-     * @param \Doctrine\ORM\Cache\Region                              $region      The collection region.
-     * @param \Doctrine\ORM\EntityManagerInterface                    $em          The entity manager.
-     * @param array                                                   $association The association mapping.
+     * @param CollectionPersister    $persister   The collection persister that will be cached.
+     * @param Region                 $region      The collection region.
+     * @param EntityManagerInterface $em          The entity manager.
+     * @param mixed[]                $association The association mapping.
      */
     public function __construct(CollectionPersister $persister, Region $region, EntityManagerInterface $em, array $association)
     {
-        $configuration  = $em->getConfiguration();
-        $cacheConfig    = $configuration->getSecondLevelCacheConfiguration();
-        $cacheFactory   = $cacheConfig->getCacheFactory();
+        $configuration = $em->getConfiguration();
+        $cacheConfig   = $configuration->getSecondLevelCacheConfiguration();
+        $cacheFactory  = $cacheConfig->getCacheFactory();
 
-        $this->region           = $region;
-        $this->persister        = $persister;
-        $this->association      = $association;
-        $this->regionName       = $region->getName();
-        $this->uow              = $em->getUnitOfWork();
-        $this->metadataFactory  = $em->getMetadataFactory();
-        $this->cacheLogger      = $cacheConfig->getCacheLogger();
-        $this->hydrator         = $cacheFactory->buildCollectionHydrator($em, $association);
-        $this->sourceEntity     = $em->getClassMetadata($association['sourceEntity']);
-        $this->targetEntity     = $em->getClassMetadata($association['targetEntity']);
+        $this->region          = $region;
+        $this->persister       = $persister;
+        $this->association     = $association;
+        $this->regionName      = $region->getName();
+        $this->uow             = $em->getUnitOfWork();
+        $this->metadataFactory = $em->getMetadataFactory();
+        $this->cacheLogger     = $cacheConfig->getCacheLogger();
+        $this->hydrator        = $cacheFactory->buildCollectionHydrator($em, $association);
+        $this->sourceEntity    = $em->getClassMetadata($association['sourceEntity']);
+        $this->targetEntity    = $em->getClassMetadata($association['targetEntity']);
     }
 
     /**
@@ -141,22 +124,17 @@ abstract class AbstractCollectionPersister implements CachedCollectionPersister
     }
 
     /**
-     * @param \Doctrine\ORM\PersistentCollection     $collection
-     * @param \Doctrine\ORM\Cache\CollectionCacheKey $key
-     *
      * @return object[]|null
      */
     public function loadCollectionCache(PersistentCollection $collection, CollectionCacheKey $key)
     {
-        if (($cache = $this->region->get($key)) === null) {
+        $cache = $this->region->get($key);
+
+        if ($cache === null) {
             return null;
         }
 
-        if (($cache = $this->hydrator->loadCacheEntry($this->sourceEntity, $key, $cache, $collection)) === null) {
-            return null;
-        }
-
-        return $cache;
+        return $this->hydrator->loadCacheEntry($this->sourceEntity, $key, $cache, $collection);
     }
 
     /**
@@ -164,14 +142,14 @@ abstract class AbstractCollectionPersister implements CachedCollectionPersister
      */
     public function storeCollectionCache(CollectionCacheKey $key, $elements)
     {
-        /* @var $targetPersister CachedEntityPersister */
         $associationMapping = $this->sourceEntity->associationMappings[$key->association];
         $targetPersister    = $this->uow->getEntityPersister($this->targetEntity->rootEntityName);
-        $targetRegion       = $targetPersister->getCacheRegion();
-        $targetHydrator     = $targetPersister->getEntityHydrator();
+        assert($targetPersister instanceof CachedEntityPersister);
+        $targetRegion   = $targetPersister->getCacheRegion();
+        $targetHydrator = $targetPersister->getEntityHydrator();
 
         // Only preserve ordering if association configured it
-        if ( ! (isset($associationMapping['indexBy']) && $associationMapping['indexBy'])) {
+        if (! (isset($associationMapping['indexBy']) && $associationMapping['indexBy'])) {
             // Elements may be an array or a Collection
             $elements = array_values(is_array($elements) ? $elements : $elements->getValues());
         }
@@ -183,15 +161,15 @@ abstract class AbstractCollectionPersister implements CachedCollectionPersister
                 continue;
             }
 
-            $class      = $this->targetEntity;
-            $className  = ClassUtils::getClass($elements[$index]);
+            $class     = $this->targetEntity;
+            $className = ClassUtils::getClass($elements[$index]);
 
             if ($className !== $this->targetEntity->name) {
                 $class = $this->metadataFactory->getMetadataFor($className);
             }
 
-            $entity       = $elements[$index];
-            $entityEntry  = $targetHydrator->buildCacheEntry($class, $entityKey, $entity);
+            $entity      = $elements[$index];
+            $entityEntry = $targetHydrator->buildCacheEntry($class, $entityKey, $entity);
 
             $targetRegion->put($entityKey, $entityEntry);
         }
@@ -262,7 +240,7 @@ abstract class AbstractCollectionPersister implements CachedCollectionPersister
     /**
      * Clears cache entries related to the current collection
      *
-     * @param PersistentCollection $collection
+     * @return void
      */
     protected function evictCollectionCache(PersistentCollection $collection)
     {
@@ -282,13 +260,15 @@ abstract class AbstractCollectionPersister implements CachedCollectionPersister
     /**
      * @param string $targetEntity
      * @param object $element
+     *
+     * @return void
      */
     protected function evictElementCache($targetEntity, $element)
     {
-        /* @var $targetPersister CachedEntityPersister */
         $targetPersister = $this->uow->getEntityPersister($targetEntity);
-        $targetRegion    = $targetPersister->getCacheRegion();
-        $key             = new EntityCacheKey($targetEntity, $this->uow->getEntityIdentifier($element));
+        assert($targetPersister instanceof CachedEntityPersister);
+        $targetRegion = $targetPersister->getCacheRegion();
+        $key          = new EntityCacheKey($targetEntity, $this->uow->getEntityIdentifier($element));
 
         $targetRegion->evict($key);
 

lib/Doctrine/ORM/Cache/Persister/Collection/CachedCollectionPersister.php

@@ -20,44 +20,39 @@
 
 namespace Doctrine\ORM\Cache\Persister\Collection;
 
+use Doctrine\Common\Collections\Collection;
 use Doctrine\ORM\Cache\CollectionCacheKey;
 use Doctrine\ORM\Cache\Persister\CachedPersister;
-use Doctrine\ORM\Persisters\Collection\CollectionPersister;
+use Doctrine\ORM\Mapping\ClassMetadata;
 use Doctrine\ORM\PersistentCollection;
+use Doctrine\ORM\Persisters\Collection\CollectionPersister;
 
 /**
  * Interface for second level cache collection persisters.
- *
- * @author Fabio B. Silva <fabio.bat.silva@gmail.com>
- * @since 2.5
  */
 interface CachedCollectionPersister extends CachedPersister, CollectionPersister
 {
     /**
-     * @return \Doctrine\ORM\Mapping\ClassMetadata
+     * @return ClassMetadata
      */
     public function getSourceEntityMetadata();
 
     /**
-     * @return \Doctrine\ORM\Mapping\ClassMetadata
+     * @return ClassMetadata
      */
     public function getTargetEntityMetadata();
 
     /**
      * Loads a collection from cache
      *
-     * @param \Doctrine\ORM\PersistentCollection     $collection
-     * @param \Doctrine\ORM\Cache\CollectionCacheKey $key
-     *
-     * @return \Doctrine\ORM\PersistentCollection|null
+     * @return PersistentCollection|null
      */
     public function loadCollectionCache(PersistentCollection $collection, CollectionCacheKey $key);
 
     /**
      * Stores a collection into cache
      *
-     * @param \Doctrine\ORM\Cache\CollectionCacheKey        $key
-     * @param array|\Doctrine\Common\Collections\Collection $elements
+     * @param array|mixed[]|Collection $elements
      *
      * @return void
      */

lib/Doctrine/ORM/Cache/Persister/Collection/NonStrictReadWriteCachedCollectionPersister.php

@@ -23,10 +23,8 @@ namespace Doctrine\ORM\Cache\Persister\Collection;
 use Doctrine\ORM\Cache\CollectionCacheKey;
 use Doctrine\ORM\PersistentCollection;
 
-/**
- * @author Fabio B. Silva <fabio.bat.silva@gmail.com>
- * @since 2.5
- */
+use function spl_object_hash;
+
 class NonStrictReadWriteCachedCollectionPersister extends AbstractCollectionPersister
 {
     /**
@@ -78,7 +76,7 @@ class NonStrictReadWriteCachedCollectionPersister extends AbstractCollectionPers
         $isInitialized = $collection->isInitialized();
         $isDirty       = $collection->isDirty();
 
-        if ( ! $isInitialized && ! $isDirty) {
+        if (! $isInitialized && ! $isDirty) {
             return;
         }
 
@@ -98,7 +96,7 @@ class NonStrictReadWriteCachedCollectionPersister extends AbstractCollectionPers
 
         $this->queuedCache['update'][spl_object_hash($collection)] = [
             'key'   => $key,
-            'list'  => $collection
+            'list'  => $collection,
         ];
     }
 }

lib/Doctrine/ORM/Cache/Persister/Collection/ReadOnlyCachedCollectionPersister.php

@@ -20,19 +20,15 @@
 
 namespace Doctrine\ORM\Cache\Persister\Collection;
 
-use Doctrine\ORM\PersistentCollection;
-use Doctrine\ORM\Cache\CacheException;
 use Doctrine\Common\Util\ClassUtils;
+use Doctrine\ORM\Cache\CacheException;
+use Doctrine\ORM\PersistentCollection;
 
-/**
- * @author Fabio B. Silva <fabio.bat.silva@gmail.com>
- * @since 2.5
- */
 class ReadOnlyCachedCollectionPersister extends NonStrictReadWriteCachedCollectionPersister
 {
      /**
-     * {@inheritdoc}
-     */
+      * {@inheritdoc}
+      */
     public function update(PersistentCollection $collection)
     {
         if ($collection->isDirty() && $collection->getSnapshot()) {

lib/Doctrine/ORM/Cache/Persister/Collection/ReadWriteCachedCollectionPersister.php

@@ -20,23 +20,21 @@
 
 namespace Doctrine\ORM\Cache\Persister\Collection;
 
-use Doctrine\ORM\Persisters\Collection\CollectionPersister;
-use Doctrine\ORM\EntityManagerInterface;
 use Doctrine\ORM\Cache\CollectionCacheKey;
 use Doctrine\ORM\Cache\ConcurrentRegion;
+use Doctrine\ORM\EntityManagerInterface;
 use Doctrine\ORM\PersistentCollection;
+use Doctrine\ORM\Persisters\Collection\CollectionPersister;
+
+use function spl_object_hash;
 
-/**
- * @author Fabio B. Silva <fabio.bat.silva@gmail.com>
- * @since 2.5
- */
 class ReadWriteCachedCollectionPersister extends AbstractCollectionPersister
 {
     /**
-     * @param \Doctrine\ORM\Persisters\Collection\CollectionPersister $persister   The collection persister that will be cached.
-     * @param \Doctrine\ORM\Cache\ConcurrentRegion                    $region      The collection region.
-     * @param \Doctrine\ORM\EntityManagerInterface                    $em          The entity manager.
-     * @param array                                                   $association The association mapping.
+     * @param CollectionPersister    $persister   The collection persister that will be cached.
+     * @param ConcurrentRegion       $region      The collection region.
+     * @param EntityManagerInterface $em          The entity manager.
+     * @param mixed[]                $association The association mapping.
      */
     public function __construct(CollectionPersister $persister, ConcurrentRegion $region, EntityManagerInterface $em, array $association)
     {
@@ -100,7 +98,7 @@ class ReadWriteCachedCollectionPersister extends AbstractCollectionPersister
 
         $this->queuedCache['delete'][spl_object_hash($collection)] = [
             'key'   => $key,
-            'lock'  => $lock
+            'lock'  => $lock,
         ];
     }
 
@@ -112,7 +110,7 @@ class ReadWriteCachedCollectionPersister extends AbstractCollectionPersister
         $isInitialized = $collection->isInitialized();
         $isDirty       = $collection->isDirty();
 
-        if ( ! $isInitialized && ! $isDirty) {
+        if (! $isInitialized && ! $isDirty) {
             return;
         }
 
@@ -128,7 +126,7 @@ class ReadWriteCachedCollectionPersister extends AbstractCollectionPersister
 
         $this->queuedCache['update'][spl_object_hash($collection)] = [
             'key'   => $key,
-            'lock'  => $lock
+            'lock'  => $lock,
         ];
     }
 }

lib/Doctrine/ORM/Cache/Persister/Entity/AbstractEntityPersister.php

@@ -20,117 +20,97 @@
 
 namespace Doctrine\ORM\Cache\Persister\Entity;
 
-use Doctrine\ORM\Cache;
-use Doctrine\ORM\Cache\Region;
-use Doctrine\ORM\Cache\EntityCacheKey;
-use Doctrine\ORM\Cache\CollectionCacheKey;
-use Doctrine\ORM\Cache\TimestampCacheKey;
-use Doctrine\ORM\Cache\QueryCacheKey;
-use Doctrine\ORM\Cache\Persister\CachedPersister;
-use Doctrine\ORM\Mapping\ClassMetadata;
-use Doctrine\ORM\PersistentCollection;
-use Doctrine\ORM\EntityManagerInterface;
-use Doctrine\ORM\Persisters\Entity\EntityPersister;
-
-use Doctrine\Common\Util\ClassUtils;
 use Doctrine\Common\Collections\Criteria;
+use Doctrine\Common\Util\ClassUtils;
+use Doctrine\ORM\Cache;
+use Doctrine\ORM\Cache\CollectionCacheKey;
+use Doctrine\ORM\Cache\EntityCacheKey;
+use Doctrine\ORM\Cache\EntityHydrator;
+use Doctrine\ORM\Cache\Logging\CacheLogger;
+use Doctrine\ORM\Cache\Persister\CachedPersister;
+use Doctrine\ORM\Cache\QueryCacheKey;
+use Doctrine\ORM\Cache\Region;
+use Doctrine\ORM\Cache\TimestampCacheKey;
+use Doctrine\ORM\Cache\TimestampRegion;
+use Doctrine\ORM\EntityManagerInterface;
+use Doctrine\ORM\Mapping\ClassMetadata;
+use Doctrine\ORM\Mapping\ClassMetadataFactory;
+use Doctrine\ORM\PersistentCollection;
+use Doctrine\ORM\Persisters\Entity\EntityPersister;
+use Doctrine\ORM\UnitOfWork;
+
+use function assert;
+use function serialize;
+use function sha1;
 
-/**
- * @author Fabio B. Silva <fabio.bat.silva@gmail.com>
- * @since 2.5
- */
 abstract class AbstractEntityPersister implements CachedEntityPersister
 {
-     /**
-     * @var \Doctrine\ORM\UnitOfWork
-     */
+     /** @var UnitOfWork */
     protected $uow;
 
-    /**
-     * @var \Doctrine\ORM\Mapping\ClassMetadataFactory
-     */
+    /** @var ClassMetadataFactory */
     protected $metadataFactory;
 
-    /**
-     * @var \Doctrine\ORM\Persisters\Entity\EntityPersister
-     */
+    /** @var EntityPersister */
     protected $persister;
 
-    /**
-     * @var \Doctrine\ORM\Mapping\ClassMetadata
-     */
+    /** @var ClassMetadata */
     protected $class;
 
-     /**
-     * @var array
-     */
+     /** @var mixed[] */
     protected $queuedCache = [];
 
-    /**
-     * @var \Doctrine\ORM\Cache\Region
-     */
+    /** @var Region */
     protected $region;
 
-    /**
-     * @var \Doctrine\ORM\Cache\TimestampRegion
-     */
+    /** @var TimestampRegion */
     protected $timestampRegion;
 
-    /**
-     * @var \Doctrine\ORM\Cache\TimestampCacheKey
-     */
+    /** @var TimestampCacheKey */
     protected $timestampKey;
 
-    /**
-     * @var \Doctrine\ORM\Cache\EntityHydrator
-     */
+    /** @var EntityHydrator */
     protected $hydrator;
 
-    /**
-     * @var \Doctrine\ORM\Cache
-     */
+    /** @var Cache */
     protected $cache;
 
-    /**
-     * @var \Doctrine\ORM\Cache\Logging\CacheLogger
-     */
+    /** @var CacheLogger|null */
     protected $cacheLogger;
 
-    /**
-     * @var string
-     */
+    /** @var string */
     protected $regionName;
 
     /**
      * Associations configured as FETCH_EAGER, as well as all inverse one-to-one associations.
      *
-     * @var array|null
+     * @var array<string>|null
      */
     protected $joinedAssociations;
 
     /**
-     * @param \Doctrine\ORM\Persisters\Entity\EntityPersister $persister The entity persister to cache.
-     * @param \Doctrine\ORM\Cache\Region                      $region    The entity cache region.
-     * @param \Doctrine\ORM\EntityManagerInterface            $em        The entity manager.
-     * @param \Doctrine\ORM\Mapping\ClassMetadata             $class     The entity metadata.
+     * @param EntityPersister        $persister The entity persister to cache.
+     * @param Region                 $region    The entity cache region.
+     * @param EntityManagerInterface $em        The entity manager.
+     * @param ClassMetadata          $class     The entity metadata.
      */
     public function __construct(EntityPersister $persister, Region $region, EntityManagerInterface $em, ClassMetadata $class)
     {
-        $configuration  = $em->getConfiguration();
-        $cacheConfig    = $configuration->getSecondLevelCacheConfiguration();
-        $cacheFactory   = $cacheConfig->getCacheFactory();
+        $configuration = $em->getConfiguration();
+        $cacheConfig   = $configuration->getSecondLevelCacheConfiguration();
+        $cacheFactory  = $cacheConfig->getCacheFactory();
 
-        $this->class            = $class;
-        $this->region           = $region;
-        $this->persister        = $persister;
-        $this->cache            = $em->getCache();
-        $this->regionName       = $region->getName();
-        $this->uow              = $em->getUnitOfWork();
-        $this->metadataFactory  = $em->getMetadataFactory();
-        $this->cacheLogger      = $cacheConfig->getCacheLogger();
-        $this->timestampRegion  = $cacheFactory->getTimestampRegion();
-        $this->hydrator         = $cacheFactory->buildEntityHydrator($em, $class);
-        $this->timestampKey     = new TimestampCacheKey($this->class->rootEntityName);
+        $this->class           = $class;
+        $this->region          = $region;
+        $this->persister       = $persister;
+        $this->cache           = $em->getCache();
+        $this->regionName      = $region->getName();
+        $this->uow             = $em->getUnitOfWork();
+        $this->metadataFactory = $em->getMetadataFactory();
+        $this->cacheLogger     = $cacheConfig->getCacheLogger();
+        $this->timestampRegion = $cacheFactory->getTimestampRegion();
+        $this->hydrator        = $cacheFactory->buildEntityHydrator($em, $class);
+        $this->timestampKey    = new TimestampCacheKey($this->class->rootEntityName);
     }
 
     /**
@@ -152,7 +132,7 @@ abstract class AbstractEntityPersister implements CachedEntityPersister
     /**
      * {@inheritdoc}
      */
-    public function getSelectSQL($criteria, $assoc = null, $lockMode = null, $limit = null, $offset = null, array $orderBy = null)
+    public function getSelectSQL($criteria, $assoc = null, $lockMode = null, $limit = null, $offset = null, ?array $orderBy = null)
     {
         return $this->persister->getSelectSQL($criteria, $assoc, $lockMode, $limit, $offset, $orderBy);
     }
@@ -192,9 +172,9 @@ abstract class AbstractEntityPersister implements CachedEntityPersister
     /**
      * {@inheritdoc}
      */
-    public function exists($entity, Criteria $extraConditions = null)
+    public function exists($entity, ?Criteria $extraConditions = null)
     {
-        if (null === $extraConditions) {
+        if ($extraConditions === null) {
             $key = new EntityCacheKey($this->class->rootEntityName, $this->class->getIdentifierValues($entity));
 
             if ($this->region->contains($key)) {
@@ -214,7 +194,7 @@ abstract class AbstractEntityPersister implements CachedEntityPersister
     }
 
     /**
-     * @return \Doctrine\ORM\Cache\EntityHydrator
+     * @return EntityHydrator
      */
     public function getEntityHydrator()
     {
@@ -226,8 +206,8 @@ abstract class AbstractEntityPersister implements CachedEntityPersister
      */
     public function storeEntityCache($entity, EntityCacheKey $key)
     {
-        $class      = $this->class;
-        $className  = ClassUtils::getClass($entity);
+        $class     = $this->class;
+        $className = ClassUtils::getClass($entity);
 
         if ($className !== $this->class->name) {
             $class = $this->metadataFactory->getMetadataFor($className);
@@ -246,16 +226,17 @@ abstract class AbstractEntityPersister implements CachedEntityPersister
     /**
      * @param object $entity
      */
-    private function storeJoinedAssociations($entity)
+    private function storeJoinedAssociations($entity): void
     {
         if ($this->joinedAssociations === null) {
             $associations = [];
 
             foreach ($this->class->associationMappings as $name => $assoc) {
-                if (isset($assoc['cache']) &&
+                if (
+                    isset($assoc['cache']) &&
                     ($assoc['type'] & ClassMetadata::TO_ONE) &&
-                    ($assoc['fetch'] === ClassMetadata::FETCH_EAGER || ! $assoc['isOwningSide'])) {
-
+                    ($assoc['fetch'] === ClassMetadata::FETCH_EAGER || ! $assoc['isOwningSide'])
+                ) {
                     $associations[] = $name;
                 }
             }
@@ -291,7 +272,7 @@ abstract class AbstractEntityPersister implements CachedEntityPersister
      *
      * @return string
      */
-    protected function getHash($query, $criteria, array $orderBy = null, $limit = null, $offset = null)
+    protected function getHash($query, $criteria, ?array $orderBy = null, $limit = null, $offset = null)
     {
         [$params] = $criteria instanceof Criteria
             ? $this->persister->expandCriteriaParameters($criteria)
@@ -361,9 +342,9 @@ abstract class AbstractEntityPersister implements CachedEntityPersister
     /**
      * {@inheritdoc}
      */
-    public function load(array $criteria, $entity = null, $assoc = null, array $hints = [], $lockMode = null, $limit = null, array $orderBy = null)
+    public function load(array $criteria, $entity = null, $assoc = null, array $hints = [], $lockMode = null, $limit = null, ?array $orderBy = null)
     {
-        if ($entity !== null || $assoc !== null || ! empty($hints) || $lockMode !== null) {
+        if ($entity !== null || $assoc !== null || $hints !== [] || $lockMode !== null) {
             return $this->persister->load($criteria, $entity, $assoc, $hints, $lockMode, $limit, $orderBy);
         }
 
@@ -383,7 +364,9 @@ abstract class AbstractEntityPersister implements CachedEntityPersister
             return $result[0];
         }
 
-        if (($result = $this->persister->load($criteria, $entity, $assoc, $hints, $lockMode, $limit, $orderBy)) === null) {
+        $result = $this->persister->load($criteria, $entity, $assoc, $hints, $lockMode, $limit, $orderBy);
+
+        if ($result === null) {
             return null;
         }
 
@@ -405,7 +388,7 @@ abstract class AbstractEntityPersister implements CachedEntityPersister
     /**
      * {@inheritdoc}
      */
-    public function loadAll(array $criteria = [], array $orderBy = null, $limit = null, $offset = null)
+    public function loadAll(array $criteria = [], ?array $orderBy = null, $limit = null, $offset = null)
     {
         $query      = $this->persister->getSelectSQL($criteria, null, null, $limit, $offset, $orderBy);
         $hash       = $this->getHash($query, $criteria, null, null, null);
@@ -469,8 +452,8 @@ abstract class AbstractEntityPersister implements CachedEntityPersister
             return null;
         }
 
-        $class      = $this->class;
-        $className  = ClassUtils::getClass($entity);
+        $class     = $this->class;
+        $className = ClassUtils::getClass($entity);
 
         if ($className !== $this->class->name) {
             $class = $this->metadataFactory->getMetadataFor($className);
@@ -479,7 +462,7 @@ abstract class AbstractEntityPersister implements CachedEntityPersister
         $cacheEntry = $this->hydrator->buildCacheEntry($class, $cacheKey, $entity);
         $cached     = $this->region->put($cacheKey, $cacheEntry);
 
-        if ($cached && (null === $this->joinedAssociations || $this->joinedAssociations)) {
+        if ($cached && ($this->joinedAssociations === null || $this->joinedAssociations)) {
             $this->storeJoinedAssociations($entity);
         }
 
@@ -549,7 +532,7 @@ abstract class AbstractEntityPersister implements CachedEntityPersister
         $persister = $this->uow->getCollectionPersister($assoc);
         $hasCache  = ($persister instanceof CachedPersister);
 
-        if ( ! $hasCache) {
+        if (! $hasCache) {
             return $this->persister->loadManyToManyCollection($assoc, $sourceEntity, $collection);
         }
 
@@ -584,7 +567,7 @@ abstract class AbstractEntityPersister implements CachedEntityPersister
         $persister = $this->uow->getCollectionPersister($assoc);
         $hasCache  = ($persister instanceof CachedPersister);
 
-        if ( ! $hasCache) {
+        if (! $hasCache) {
             return $this->persister->loadOneToManyCollection($assoc, $sourceEntity, $collection);
         }
 
@@ -636,15 +619,15 @@ abstract class AbstractEntityPersister implements CachedEntityPersister
     }
 
     /**
-     * @param array $association
-     * @param array $ownerId
+     * @param array<string, mixed> $association
+     * @param array<string, mixed> $ownerId
      *
      * @return CollectionCacheKey
      */
     protected function buildCollectionCacheKey(array $association, $ownerId)
     {
-        /** @var ClassMetadata $metadata */
         $metadata = $this->metadataFactory->getMetadataFor($association['sourceEntity']);
+        assert($metadata instanceof ClassMetadata);
 
         return new CollectionCacheKey($metadata->rootEntityName, $association['fieldName'], $ownerId);
     }

lib/Doctrine/ORM/Cache/Persister/Entity/CachedEntityPersister.php

@@ -21,27 +21,24 @@
 namespace Doctrine\ORM\Cache\Persister\Entity;
 
 use Doctrine\ORM\Cache\EntityCacheKey;
+use Doctrine\ORM\Cache\EntityHydrator;
 use Doctrine\ORM\Cache\Persister\CachedPersister;
 use Doctrine\ORM\Persisters\Entity\EntityPersister;
 
 /**
  * Interface for second level cache entity persisters.
- *
- * @author Fabio B. Silva <fabio.bat.silva@gmail.com>
- * @since 2.5
  */
 interface CachedEntityPersister extends CachedPersister, EntityPersister
 {
     /**
-     * @return \Doctrine\ORM\Cache\EntityHydrator
+     * @return EntityHydrator
      */
     public function getEntityHydrator();
 
     /**
-     * @param object                             $entity
-     * @param \Doctrine\ORM\Cache\EntityCacheKey $key
+     * @param object $entity
      *
-     * @return boolean
+     * @return bool
      */
     public function storeEntityCache($entity, EntityCacheKey $key);
 }

lib/Doctrine/ORM/Cache/Persister/Entity/NonStrictReadWriteCachedEntityPersister.php

@@ -22,12 +22,10 @@ namespace Doctrine\ORM\Cache\Persister\Entity;
 
 use Doctrine\ORM\Cache\EntityCacheKey;
 
+use function get_class;
+
 /**
  * Specific non-strict read/write cached entity persister
- *
- * @author Fabio B. Silva <fabio.bat.silva@gmail.com>
- * @author Guilherme Blanco <guilhermeblanco@hotmail.com>
- * @since  2.5
  */
 class NonStrictReadWriteCachedEntityPersister extends AbstractEntityPersister
 {
@@ -102,17 +100,14 @@ class NonStrictReadWriteCachedEntityPersister extends AbstractEntityPersister
 
     /**
      * @param object $entity
-     * @param bool   $isChanged
-     *
-     * @return bool
      */
-    private function updateCache($entity, $isChanged)
+    private function updateCache($entity, bool $isChanged): bool
     {
-        $class      = $this->metadataFactory->getMetadataFor(get_class($entity));
-        $key        = new EntityCacheKey($class->rootEntityName, $this->uow->getEntityIdentifier($entity));
-        $entry      = $this->hydrator->buildCacheEntry($class, $key, $entity);
-        $cached     = $this->region->put($key, $entry);
-        $isChanged  = $isChanged ?: $cached;
+        $class     = $this->metadataFactory->getMetadataFor(get_class($entity));
+        $key       = new EntityCacheKey($class->rootEntityName, $this->uow->getEntityIdentifier($entity));
+        $entry     = $this->hydrator->buildCacheEntry($class, $key, $entity);
+        $cached    = $this->region->put($key, $entry);
+        $isChanged = $isChanged || $cached;
 
         if ($this->cacheLogger && $cached) {
             $this->cacheLogger->entityCachePut($this->regionName, $key);

lib/Doctrine/ORM/Cache/Persister/Entity/ReadOnlyCachedEntityPersister.php

@@ -20,14 +20,11 @@
 
 namespace Doctrine\ORM\Cache\Persister\Entity;
 
-use Doctrine\ORM\Cache\CacheException;
 use Doctrine\Common\Util\ClassUtils;
+use Doctrine\ORM\Cache\CacheException;
 
 /**
  * Specific read-only region entity persister
- *
- * @author Fabio B. Silva <fabio.bat.silva@gmail.com>
- * @since 2.5
  */
 class ReadOnlyCachedEntityPersister extends NonStrictReadWriteCachedEntityPersister
 {