fix: update index to be serialized in __sleep() (#12366)

Signed-off-by: Vikram Vaswani <2571660+vvaswani@users.noreply.github.com`>

.doctrine-project.json

@@ -12,42 +12,17 @@
             "upcoming": true
         },
         {
-            "name": "3.6",
-            "branchName": "3.6.x",
-            "slug": "3.6",
+            "name": "3.7",
+            "branchName": "3.7.x",
+            "slug": "3.7",
             "upcoming": true
         },
         {
-            "name": "3.5",
-            "branchName": "3.5.x",
-            "slug": "3.5",
+            "name": "3.6",
+            "branchName": "3.6.x",
+            "slug": "3.6",
             "current": true
         },
-        {
-            "name": "3.4",
-            "slug": "3.4",
-            "maintained": false
-        },
-        {
-            "name": "3.3",
-            "slug": "3.3",
-            "maintained": false
-        },
-        {
-            "name": "3.2",
-            "slug": "3.2",
-            "maintained": false
-        },
-        {
-            "name": "3.1",
-            "slug": "3.1",
-            "maintained": false
-        },
-        {
-            "name": "3.0",
-            "slug": "3.0",
-            "maintained": false
-        },
         {
             "name": "2.21",
             "branchName": "2.21.x",
@@ -89,26 +64,6 @@
             "name": "2.14",
             "slug": "2.14",
             "maintained": false
-        },
-        {
-            "name": "2.13",
-            "slug": "2.13",
-            "maintained": false
-        },
-        {
-            "name": "2.12",
-            "slug": "2.12",
-            "maintained": false
-        },
-        {
-            "name": "2.11",
-            "slug": "2.11",
-            "maintained": false
-        },
-        {
-            "name": "2.10",
-            "slug": "2.10",
-            "maintained": false
         }
     ]
 }

.gitattributes

@@ -15,6 +15,6 @@ phpcs.xml.dist export-ignore
 phpbench.json export-ignore
 phpstan.neon export-ignore
 phpstan-baseline.neon export-ignore
-phpstan-dbal2.neon export-ignore
+phpstan-dbal3.neon export-ignore
 phpstan-params.neon export-ignore
 phpstan-persistence2.neon export-ignore

.github/workflows/coding-standards.yml

@@ -24,4 +24,4 @@ on:
 
 jobs:
   coding-standards:
-    uses: "doctrine/.github/.github/workflows/coding-standards.yml@12.1.0"
+    uses: "doctrine/.github/.github/workflows/coding-standards.yml@13.1.0"

.github/workflows/composer-lint.yml

@@ -0,0 +1,20 @@
+name: "Composer Lint"
+
+on:
+  pull_request:
+    branches:
+      - "*.x"
+    paths:
+      - ".github/workflows/composer-lint.yml"
+      - "composer.json"
+  push:
+    branches:
+      - "*.x"
+    paths:
+      - ".github/workflows/composer-lint.yml"
+      - "composer.json"
+
+jobs:
+  composer-lint:
+    name: "Composer Lint"
+    uses: "doctrine/.github/.github/workflows/composer-lint.yml@13.1.0"

.github/workflows/continuous-integration.yml

@@ -1,4 +1,4 @@
-name: "CI"
+name: "CI: PHPUnit"
 
 on:
   pull_request:
@@ -25,7 +25,14 @@ env:
 
 jobs:
   phpunit-smoke-check:
-    name: "PHPUnit with SQLite"
+    name: >
+      SQLite -
+      ${{ format('PHP {0} - DBAL {1} - ext. {2} - proxy {3}',
+        matrix.php-version || 'Ø',
+        matrix.dbal-version || 'Ø',
+        matrix.extension || 'Ø',
+        matrix.proxy || 'Ø'
+      ) }}
     runs-on: "ubuntu-22.04"
 
     strategy:
@@ -44,31 +51,43 @@ jobs:
           - "pdo_sqlite"
         deps:
           - "highest"
+        stability:
+          - "stable"
         native_lazy:
           - "0"
         include:
           - php-version: "8.2"
             dbal-version: "4@dev"
             extension: "pdo_sqlite"
+            stability: "stable"
             native_lazy: "0"
           - php-version: "8.2"
             dbal-version: "4@dev"
             extension: "sqlite3"
+            stability: "stable"
             native_lazy: "0"
           - php-version: "8.1"
             dbal-version: "default"
             deps: "lowest"
             extension: "pdo_sqlite"
+            stability: "stable"
             native_lazy: "0"
           - php-version: "8.4"
             dbal-version: "default"
             deps: "highest"
             extension: "pdo_sqlite"
+            stability: "stable"
+            native_lazy: "1"
+          - php-version: "8.4"
+            dbal-version: "default"
+            deps: "highest"
+            extension: "sqlite3"
+            stability: "dev"
             native_lazy: "1"
 
     steps:
       - name: "Checkout"
-        uses: "actions/checkout@v5"
+        uses: "actions/checkout@v6"
         with:
           fetch-depth: 2
 
@@ -80,10 +99,22 @@ jobs:
           coverage: "pcov"
           ini-values: "zend.assertions=1, apc.enable_cli=1"
 
+      - name: "Allow dev dependencies"
+        run: |
+          composer config minimum-stability dev
+          composer remove --no-update --dev phpbench/phpbench phpdocumentor/guides-cli
+          composer require --no-update symfony/console:^8 symfony/var-exporter:^8 doctrine/dbal:^4.4
+          composer require --dev --no-update symfony/cache:^8
+        if: "${{ matrix.stability == 'dev' }}"
+
       - name: "Require specific DBAL version"
         run: "composer require doctrine/dbal ^${{ matrix.dbal-version }} --no-update"
         if: "${{ matrix.dbal-version != 'default' }}"
 
+      - name: "Downgrade VarExporter"
+        run: 'composer require --no-update "symfony/var-exporter:^6.4 || ^7.4"'
+        if: "${{ matrix.native_lazy == '0' }}"
+
       - name: "Install dependencies with Composer"
         uses: "ramsey/composer-install@v3"
         with:
@@ -119,9 +150,9 @@ jobs:
             ENABLE_NATIVE_LAZY_OBJECTS: ${{ matrix.native_lazy }}
 
       - name: "Upload coverage file"
-        uses: "actions/upload-artifact@v5"
+        uses: "actions/upload-artifact@v6"
         with:
-          name: "phpunit-${{ matrix.extension }}-${{ matrix.php-version }}-${{ matrix.dbal-version }}-${{ matrix.deps }}-${{ matrix.native_lazy }}-coverage"
+          name: "phpunit-${{ matrix.extension }}-${{ matrix.php-version }}-${{ matrix.dbal-version }}-${{ matrix.deps }}-${{ matrix.stability }}-${{ matrix.native_lazy }}-coverage"
           path: "coverage*.xml"
 
 
@@ -160,7 +191,13 @@ jobs:
 
 
   phpunit-postgres:
-    name: "PHPUnit with PostgreSQL"
+    name: >
+      ${{ format('PostgreSQL {0} - PHP {1} - DBAL {2} - ext. {3}',
+        matrix.postgres-version || 'Ø',
+        matrix.php-version || 'Ø',
+        matrix.dbal-version || 'Ø',
+        matrix.extension || 'Ø'
+      ) }}
     runs-on: "ubuntu-22.04"
     needs: "phpunit-smoke-check"
 
@@ -203,7 +240,7 @@ jobs:
 
     steps:
       - name: "Checkout"
-        uses: "actions/checkout@v5"
+        uses: "actions/checkout@v6"
         with:
           fetch-depth: 2
 
@@ -228,14 +265,20 @@ jobs:
         run: "vendor/bin/phpunit -c ci/github/phpunit/pdo_pgsql.xml --coverage-clover=coverage.xml"
 
       - name: "Upload coverage file"
-        uses: "actions/upload-artifact@v5"
+        uses: "actions/upload-artifact@v6"
         with:
           name: "${{ github.job }}-${{ matrix.postgres-version }}-${{ matrix.php-version }}-${{ matrix.dbal-version }}-${{ matrix.extension }}-coverage"
           path: "coverage.xml"
 
 
   phpunit-mariadb:
-    name: "PHPUnit with MariaDB"
+    name: >
+      ${{ format('MariaDB {0} - PHP {1} - DBAL {2} - ext. {3}',
+        matrix.mariadb-version || 'Ø',
+        matrix.php-version || 'Ø',
+        matrix.dbal-version || 'Ø',
+        matrix.extension || 'Ø'
+      ) }}
     runs-on: "ubuntu-22.04"
     needs: "phpunit-smoke-check"
 
@@ -271,7 +314,7 @@ jobs:
 
     steps:
       - name: "Checkout"
-        uses: "actions/checkout@v5"
+        uses: "actions/checkout@v6"
         with:
           fetch-depth: 2
 
@@ -296,14 +339,20 @@ jobs:
         run: "vendor/bin/phpunit -c ci/github/phpunit/${{ matrix.extension }}.xml --coverage-clover=coverage.xml"
 
       - name: "Upload coverage file"
-        uses: "actions/upload-artifact@v5"
+        uses: "actions/upload-artifact@v6"
         with:
           name: "${{ github.job }}-${{ matrix.mariadb-version }}-${{ matrix.extension }}-${{ matrix.php-version }}-${{ matrix.dbal-version }}-coverage"
           path: "coverage.xml"
 
 
   phpunit-mysql:
-    name: "PHPUnit with MySQL"
+    name: >
+      ${{ format('MySQL {0} - PHP {1} - DBAL {2} - ext. {3}',
+        matrix.mysql-version || 'Ø',
+        matrix.php-version || 'Ø',
+        matrix.dbal-version || 'Ø',
+        matrix.extension || 'Ø'
+      ) }}
     runs-on: "ubuntu-22.04"
     needs: "phpunit-smoke-check"
 
@@ -347,7 +396,7 @@ jobs:
 
     steps:
       - name: "Checkout"
-        uses: "actions/checkout@v5"
+        uses: "actions/checkout@v6"
         with:
           fetch-depth: 2
 
@@ -393,7 +442,7 @@ jobs:
             ENABLE_SECOND_LEVEL_CACHE: 1
 
       - name: "Upload coverage files"
-        uses: "actions/upload-artifact@v5"
+        uses: "actions/upload-artifact@v6"
         with:
           name: "${{ github.job }}-${{ matrix.mysql-version }}-${{ matrix.extension }}-${{ matrix.php-version }}-${{ matrix.dbal-version }}-coverage"
           path: "coverage*.xml"
@@ -411,12 +460,12 @@ jobs:
 
     steps:
       - name: "Checkout"
-        uses: "actions/checkout@v5"
+        uses: "actions/checkout@v6"
         with:
           fetch-depth: 2
 
       - name: "Download coverage files"
-        uses: "actions/download-artifact@v6"
+        uses: "actions/download-artifact@v7"
         with:
           path: "reports"
 

.github/workflows/documentation.yml

@@ -17,4 +17,4 @@ on:
 jobs:
   documentation:
     name: "Documentation"
-    uses: "doctrine/.github/.github/workflows/documentation.yml@12.1.0"
+    uses: "doctrine/.github/.github/workflows/documentation.yml@13.1.0"

.github/workflows/phpbench.yml

@@ -36,7 +36,7 @@ jobs:
 
     steps:
       - name: "Checkout"
-        uses: "actions/checkout@v5"
+        uses: "actions/checkout@v6"
         with:
           fetch-depth: 2
 

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

@@ -7,7 +7,7 @@ on:
 
 jobs:
   release:
-    uses: "doctrine/.github/.github/workflows/release-on-milestone-closed.yml@12.1.0"
+    uses: "doctrine/.github/.github/workflows/release-on-milestone-closed.yml@13.1.0"
     secrets:
       GIT_AUTHOR_EMAIL: ${{ secrets.GIT_AUTHOR_EMAIL }}
       GIT_AUTHOR_NAME: ${{ secrets.GIT_AUTHOR_NAME }}

.github/workflows/static-analysis.yml

@@ -35,7 +35,7 @@ jobs:
 
     steps:
       - name: "Checkout code"
-        uses: "actions/checkout@v5"
+        uses: "actions/checkout@v6"
 
       - name: Install PHP
         uses: shivammathur/setup-php@v2

README.md

@@ -1,7 +1,7 @@
-|                      [4.0.x][4.0]                      |                      [3.6.x][3.6]                      |                      [3.5.x][3.5]                      |                      [2.21.x][2.21]                      |                      [2.20.x][2.20]                      |
+|                      [4.0.x][4.0]                      |                      [3.7.x][3.7]                      |                      [3.6.x][3.6]                      |                      [2.21.x][2.21]                      |                      [2.20.x][2.20]                      |
 |:------------------------------------------------------:|:------------------------------------------------------:|:------------------------------------------------------:|:--------------------------------------------------------:|:--------------------------------------------------------:|
-|       [![Build status][4.0 image]][4.0 workflow]       |       [![Build status][3.6 image]][3.6 workflow]       |       [![Build status][3.5 image]][3.5 workflow]       |       [![Build status][2.21 image]][2.21 workflow]       |       [![Build status][2.20 image]][2.20 workflow]       |
-| [![Coverage Status][4.0 coverage image]][4.0 coverage] | [![Coverage Status][3.6 coverage image]][3.6 coverage] | [![Coverage Status][3.5 coverage image]][3.5 coverage] | [![Coverage Status][2.21 coverage image]][2.21 coverage] | [![Coverage Status][2.20 coverage image]][2.20 coverage] |
+|       [![Build status][4.0 image]][4.0 workflow]       |       [![Build status][3.7 image]][3.7 workflow]       |       [![Build status][3.6 image]][3.6 workflow]       |       [![Build status][2.21 image]][2.21 workflow]       |       [![Build status][2.20 image]][2.20 workflow]       |
+| [![Coverage Status][4.0 coverage image]][4.0 coverage] | [![Coverage Status][3.7 coverage image]][3.7 coverage] | [![Coverage Status][3.6 coverage image]][3.6 coverage] | [![Coverage Status][2.21 coverage image]][2.21 coverage] | [![Coverage Status][2.20 coverage image]][2.20 coverage] |
 
 Doctrine ORM is an object-relational mapper for PHP 8.1+ that provides transparent persistence
 for PHP objects. It sits on top of a powerful database abstraction layer (DBAL). One of its key features
@@ -21,16 +21,16 @@ without requiring unnecessary code duplication.
   [4.0 workflow]: https://github.com/doctrine/orm/actions/workflows/continuous-integration.yml?query=branch%3A4.0.x
   [4.0 coverage image]: https://codecov.io/gh/doctrine/orm/branch/4.0.x/graph/badge.svg
   [4.0 coverage]: https://codecov.io/gh/doctrine/orm/branch/4.0.x
+  [3.7 image]: https://github.com/doctrine/orm/actions/workflows/continuous-integration.yml/badge.svg?branch=3.7.x
+  [3.7]: https://github.com/doctrine/orm/tree/3.7.x
+  [3.7 workflow]: https://github.com/doctrine/orm/actions/workflows/continuous-integration.yml?query=branch%3A3.7.x
+  [3.7 coverage image]: https://codecov.io/gh/doctrine/orm/branch/3.7.x/graph/badge.svg
+  [3.7 coverage]: https://codecov.io/gh/doctrine/orm/branch/3.7.x
   [3.6 image]: https://github.com/doctrine/orm/actions/workflows/continuous-integration.yml/badge.svg?branch=3.6.x
   [3.6]: https://github.com/doctrine/orm/tree/3.6.x
   [3.6 workflow]: https://github.com/doctrine/orm/actions/workflows/continuous-integration.yml?query=branch%3A3.6.x
   [3.6 coverage image]: https://codecov.io/gh/doctrine/orm/branch/3.6.x/graph/badge.svg
   [3.6 coverage]: https://codecov.io/gh/doctrine/orm/branch/3.6.x
-  [3.5 image]: https://github.com/doctrine/orm/actions/workflows/continuous-integration.yml/badge.svg?branch=3.5.x
-  [3.5]: https://github.com/doctrine/orm/tree/3.5.x
-  [3.5 workflow]: https://github.com/doctrine/orm/actions/workflows/continuous-integration.yml?query=branch%3A3.5.x
-  [3.5 coverage image]: https://codecov.io/gh/doctrine/orm/branch/3.5.x/graph/badge.svg
-  [3.5 coverage]: https://codecov.io/gh/doctrine/orm/branch/3.5.x
   [2.21 image]: https://github.com/doctrine/orm/actions/workflows/continuous-integration.yml/badge.svg?branch=2.21.x
   [2.21]: https://github.com/doctrine/orm/tree/2.21.x
   [2.21 workflow]: https://github.com/doctrine/orm/actions/workflows/continuous-integration.yml?query=branch%3A2.21.x

UPGRADE.md

@@ -27,6 +27,148 @@ At this point, we recommend upgrading to PHP 8.4 first and then directly from
 ORM 2.19 to 3.5 and up so that you can skip the lazy ghost proxy generation
 and directly start using native lazy objects.
 
+# Upgrade to 3.6
+
+## Deprecate using string expression for default values in mappings
+
+Using a string expression for default values in field mappings is deprecated.
+Use `Doctrine\DBAL\Schema\DefaultExpression` instances instead.
+
+Here is how to address this deprecation when mapping entities using PHP attributes:
+
+```diff
+ use DateTime;
++use Doctrine\DBAL\Schema\DefaultExpression\CurrentDate;
++use Doctrine\DBAL\Schema\DefaultExpression\CurrentTime;
++use Doctrine\DBAL\Schema\DefaultExpression\CurrentTimestamp;
+ use Doctrine\ORM\Mapping as ORM;
+
+ #[ORM\Entity]
+ final class TimeEntity
+ {
+     #[ORM\Id]
+     #[ORM\Column]
+     public int $id;
+
+-    #[ORM\Column(options: ['default' => 'CURRENT_TIMESTAMP'], insertable: false, updatable: false)]
++    #[ORM\Column(options: ['default' => new CurrentTimestamp()], insertable: false, updatable: false)]
+     public DateTime $createdAt;
+
+-    #[ORM\Column(options: ['default' => 'CURRENT_TIME'], insertable: false, updatable: false)]
++    #[ORM\Column(options: ['default' => new CurrentTime()], insertable: false, updatable: false)]
+     public DateTime $createdTime;
+
+-    #[ORM\Column(options: ['default' => 'CURRENT_DATE'], insertable: false, updatable: false)]
++    #[ORM\Column(options: ['default' => new CurrentDate()], insertable: false, updatable: false)]
+     public DateTime $createdDate;
+ }
+```
+
+Here is how to do the same when mapping entities using XML:
+
+```diff
+ <?xml version="1.0" encoding="UTF-8"?>
+
+ <doctrine-mapping xmlns="http://doctrine-project.org/schemas/orm/doctrine-mapping"
+                   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+                   xsi:schemaLocation="http://doctrine-project.org/schemas/orm/doctrine-mapping
+                           https://www.doctrine-project.org/schemas/orm/doctrine-mapping.xsd">
+
+     <entity name="Doctrine\Tests\ORM\Functional\XmlTimeEntity">
+         <id name="id" type="integer" column="id">
+             <generator strategy="AUTO"/>
+         </id>
+
+         <field name="createdAt" type="datetime" insertable="false" updatable="false">
+             <options>
+-                <option name="default">CURRENT_TIMESTAMP</option>
++                <option name="default">
++                    <object class="Doctrine\DBAL\Schema\DefaultExpression\CurrentTimestamp"/>
++                </option>
+             </options>
+         </field>
+
+         <field name="createdAtImmutable" type="datetime_immutable" insertable="false" updatable="false">
+             <options>
+-                <option name="default">CURRENT_TIMESTAMP</option>
++                <option name="default">
++                    <object class="Doctrine\DBAL\Schema\DefaultExpression\CurrentTimestamp"/>
++                </option>
+             </options>
+         </field>
+
+         <field name="createdTime" type="time" insertable="false" updatable="false">
+             <options>
+-                <option name="default">CURRENT_TIME</option>
++                <option name="default">
++                    <object class="Doctrine\DBAL\Schema\DefaultExpression\CurrentTime"/>
++                </option>
+             </options>
+         </field>
+         <field name="createdDate" type="date" insertable="false" updatable="false">
+             <options>
+-                <option name="default">CURRENT_DATE</option>
++                <option name="default">
++                    <object class="Doctrine\DBAL\Schema\DefaultExpression\CurrentDate"/>
++                </option>
+             </options>
+         </field>
+     </entity>
+ </doctrine-mapping>
+```
+
+
+## Deprecate `FieldMapping::$default`
+
+The `default` property of `Doctrine\ORM\Mapping\FieldMapping` is deprecated and
+will be removed in 4.0. Instead, use `FieldMapping::$options['default']`.
+
+## Deprecate specifying `nullable` on columns that end up being used in a primary key
+
+Specifying `nullable` on join columns that are part of a primary key is
+deprecated and will be an error in 4.0.
+
+This can happen when using a join column mapping together with an id mapping,
+or when using a join column mapping or an inverse join column mapping on a
+many-to-many relationship.
+
+```diff
+ class User
+ {
+     #[ORM\Id]
+     #[ORM\Column(type: 'integer')]
+     private int $id;
+
+     #[ORM\Id]
+     #[ORM\ManyToOne(targetEntity: Family::class, inversedBy: 'users')]
+-    #[ORM\JoinColumn(name: 'family_id', referencedColumnName: 'id', nullable: true)]
++    #[ORM\JoinColumn(name: 'family_id', referencedColumnName: 'id')]
+     private ?Family $family;
+
+     #[ORM\ManyToMany(targetEntity: Group::class)]
+     #[ORM\JoinTable(name: 'user_group')]
+-    #[ORM\JoinColumn(name: 'user_id', referencedColumnName: 'id', nullable: true)]
+-    #[ORM\InverseJoinColumn(name: 'group_id', referencedColumnName: 'id', nullable: true)]
++    #[ORM\JoinColumn(name: 'user_id', referencedColumnName: 'id')]
++    #[ORM\InverseJoinColumn(name: 'group_id', referencedColumnName: 'id')]
+     private Collection $groups;
+ }
+```
+
+## Deprecate `Doctrine\ORM\QueryBuilder::add('join', ...)` with a list of join parts
+
+Using `Doctrine\ORM\QueryBuilder::add('join', ...)` with a list of join parts
+is deprecated in favor of using an associative array of join parts with the
+root alias as key.
+
+## Deprecate using the `WITH` keyword for arbitrary DQL joins
+
+Using the `WITH` keyword to specify the condition for an arbitrary DQL join is
+deprecated in favor of using the `ON` keyword (similar to the SQL syntax for
+joins).
+The `WITH` keyword is now meant to be used only for filtering conditions in
+association joins.
+
 # Upgrade to 3.5
 
 See the General notes to upgrading to 3.x versions above.
@@ -2159,7 +2301,7 @@ from 2.0 have to configure the annotation driver if they don't use `Configuratio
 
 ## Scalar mappings can now be omitted from DQL result
 
-You are now allowed to mark scalar SELECT expressions as HIDDEN an they are not hydrated anymore.
+You are now allowed to mark scalar SELECT expressions as HIDDEN and they are not hydrated anymore.
 Example:
 
 SELECT u, SUM(a.id) AS HIDDEN numArticles FROM User u LEFT JOIN u.Articles a ORDER BY numArticles DESC HAVING numArticles > 10

composer.json

@@ -1,32 +1,39 @@
 {
     "name": "doctrine/orm",
-    "type": "library",
     "description": "Object-Relational-Mapper for PHP",
-    "keywords": ["orm", "database"],
-    "homepage": "https://www.doctrine-project.org/projects/orm.html",
     "license": "MIT",
-    "authors": [
-        {"name": "Guilherme Blanco", "email": "guilhermeblanco@gmail.com"},
-        {"name": "Roman Borschel", "email": "roman@code-factory.org"},
-        {"name": "Benjamin Eberlei", "email": "kontakt@beberlei.de"},
-        {"name": "Jonathan Wage", "email": "jonwage@gmail.com"},
-        {"name": "Marco Pivetta", "email": "ocramius@gmail.com"}
+    "type": "library",
+    "keywords": [
+        "orm",
+        "database"
     ],
-    "scripts": {
-        "docs": "composer --working-dir docs update && ./docs/vendor/bin/build-docs.sh @additional_args"
-    },
-    "config": {
-        "allow-plugins": {
-            "composer/package-versions-deprecated": true,
-            "dealerdirect/phpcodesniffer-composer-installer": true,
-            "phpstan/extension-installer": true
+    "authors": [
+        {
+            "name": "Guilherme Blanco",
+            "email": "guilhermeblanco@gmail.com"
         },
-        "sort-packages": true
-    },
+        {
+            "name": "Roman Borschel",
+            "email": "roman@code-factory.org"
+        },
+        {
+            "name": "Benjamin Eberlei",
+            "email": "kontakt@beberlei.de"
+        },
+        {
+            "name": "Jonathan Wage",
+            "email": "jonwage@gmail.com"
+        },
+        {
+            "name": "Marco Pivetta",
+            "email": "ocramius@gmail.com"
+        }
+    ],
+    "homepage": "https://www.doctrine-project.org/projects/orm.html",
     "require": {
         "php": "^8.1",
-        "composer-runtime-api": "^2",
         "ext-ctype": "*",
+        "composer-runtime-api": "^2",
         "doctrine/collections": "^2.2",
         "doctrine/dbal": "^3.8.2 || ^4",
         "doctrine/deprecations": "^0.5.3 || ^1",
@@ -36,35 +43,44 @@
         "doctrine/lexer": "^3",
         "doctrine/persistence": "^3.3.1 || ^4",
         "psr/cache": "^1 || ^2 || ^3",
-        "symfony/console": "^5.4 || ^6.0 || ^7.0",
-        "symfony/var-exporter": "^6.3.9 || ^7.0"
+        "symfony/console": "^5.4 || ^6.0 || ^7.0 || ^8.0",
+        "symfony/var-exporter": "^6.3.9 || ^7.0 || ^8.0"
     },
     "require-dev": {
         "doctrine/coding-standard": "^14.0",
         "phpbench/phpbench": "^1.0",
-        "phpdocumentor/guides-cli": "^1.4",
         "phpstan/extension-installer": "^1.4",
-        "phpstan/phpstan": "2.1.22",
+        "phpstan/phpstan": "2.1.23",
         "phpstan/phpstan-deprecation-rules": "^2",
         "phpunit/phpunit": "^10.5.0 || ^11.5",
         "psr/log": "^1 || ^2 || ^3",
-        "symfony/cache": "^5.4 || ^6.2 || ^7.0"
+        "symfony/cache": "^5.4 || ^6.2 || ^7.0 || ^8.0"
     },
     "suggest": {
         "ext-dom": "Provides support for XSD validation for XML mapping files",
         "symfony/cache": "Provides cache support for Setup Tool with doctrine/cache 2.0"
     },
     "autoload": {
-        "psr-4": { "Doctrine\\ORM\\": "src" }
+        "psr-4": {
+            "Doctrine\\ORM\\": "src"
+        }
     },
     "autoload-dev": {
         "psr-4": {
-            "Doctrine\\Tests\\": "tests/Tests",
+            "Doctrine\\Performance\\": "tests/Performance",
             "Doctrine\\StaticAnalysis\\": "tests/StaticAnalysis",
-            "Doctrine\\Performance\\": "tests/Performance"
+            "Doctrine\\Tests\\": "tests/Tests"
         }
     },
-    "archive": {
-        "exclude": ["!vendor", "tests", "*phpunit.xml", "build.xml", "build.properties", "composer.phar", "vendor/satooshi", "lib/vendor", "*.swp"]
+    "config": {
+        "allow-plugins": {
+            "composer/package-versions-deprecated": true,
+            "dealerdirect/phpcodesniffer-composer-installer": true,
+            "phpstan/extension-installer": true
+        },
+        "sort-packages": true
+    },
+    "scripts": {
+        "docs": "composer --working-dir docs update && ./docs/vendor/bin/build-docs.sh @additional_args"
     }
 }

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

@@ -40,7 +40,8 @@ Now this is all awfully technical, so let me come to some use-cases
 fast to keep you motivated. Using walker implementation you can for
 example:
 
-
+-  Modify the Output walker to get the raw SQL via ``Query->getSQL()``
+   with interpolated parameters.
 -  Modify the AST to generate a Count Query to be used with a
    paginator for any given DQL query.
 -  Modify the Output Walker to generate vendor-specific SQL
@@ -50,7 +51,7 @@ example:
 -  Modify the Output walker to pretty print the SQL for debugging
    purposes.
 
-In this cookbook-entry I will show examples of the first two
+In this cookbook-entry I will show examples of the first three
 points. There are probably much more use-cases.
 
 Generic count query for pagination
@@ -223,3 +224,39 @@ huge benefits with using vendor specific features. This would still
 allow you write DQL queries instead of NativeQueries to make use of
 vendor specific features.
 
+Modifying the Output Walker to get the raw SQL with interpolated parameters
+---------------------------------------------------------------------------
+
+Sometimes we may want to log or trace the raw SQL being generated from its DQL
+for profiling slow queries afterwards or audit queries that changed many rows
+``$query->getSQL()`` will give us the prepared statement being passed to database
+with all values of SQL parameters being replaced by positional ``?`` or named ``:name``
+as parameters are interpolated into prepared statements by the database while executing the SQL.
+``$query->getParameters()`` will give us details about SQL parameters that we've provided.
+So we can create an output walker to interpolate all SQL parameters that will be
+passed into prepared statement in PHP before database handle them internally:
+
+.. literalinclude:: dql-custom-walkers/InterpolateParametersSQLOutputWalker.php
+   :language: php
+
+Then you may get the raw SQL with this output walker:
+
+.. code-block:: php
+
+    <?php
+    $query
+        ->where('t.int IN (:ints)')->setParameter(':ints', [1, 2])
+        ->orWhere('t.string IN (?0)')->setParameter(0, ['3', '4'])
+        ->orWhere("t.bool = ?1")->setParameter('?1', true)
+        ->orWhere("t.string = :string")->setParameter(':string', 'ABC')
+        ->setHint(\Doctrine\ORM\Query::HINT_CUSTOM_OUTPUT_WALKER, InterpolateParametersSQLOutputWalker::class)
+        ->getSQL();
+
+The where clause of the returned SQL should be like:
+
+.. code-block:: sql
+
+    WHERE t0_.int IN (1, 2)
+       OR t0_.string IN ('3', '4')
+       OR t0_.bool = 1
+       OR t0_.string = 'ABC'

docs/en/cookbook/dql-custom-walkers/InterpolateParametersSQLOutputWalker.php

@@ -0,0 +1,47 @@
+<?php
+use Doctrine\DBAL\ArrayParameterType;
+use Doctrine\DBAL\ParameterType;
+use Doctrine\DBAL\Types\BooleanType;
+use Doctrine\DBAL\Types\Exception\ValueNotConvertible;
+use Doctrine\DBAL\Types\Type;
+use Doctrine\ORM\Query\AST;
+use Doctrine\ORM\Query\SqlOutputWalker;
+
+class InterpolateParametersSQLOutputWalker extends SqlOutputWalker
+{
+    /** {@inheritdoc} */
+    public function walkInputParameter(AST\InputParameter $inputParam): string
+    {
+        $parameter = $this->getQuery()->getParameter($inputParam->name);
+        if ($parameter === null) {
+            return '?';
+        }
+
+        $value = $parameter->getValue();
+        /** @var ParameterType|ArrayParameterType|int|string $typeName */
+        /** @see \Doctrine\ORM\Query\ParameterTypeInferer::inferType() */
+        $typeName = $parameter->getType();
+        $platform = $this->getConnection()->getDatabasePlatform();
+        $processParameterType = static fn(ParameterType $type) => static fn($value): string =>
+            (match ($type) { /** @see Type::getBindingType() */
+                ParameterType::NULL => 'NULL',
+                ParameterType::INTEGER => $value,
+                ParameterType::BOOLEAN => (new BooleanType())->convertToDatabaseValue($value, $platform),
+                ParameterType::STRING, ParameterType::ASCII => $platform->quoteStringLiteral($value),
+                default => throw new ValueNotConvertible($value, $type->name)
+            });
+
+        if (is_string($typeName) && Type::hasType($typeName)) {
+            return Type::getType($typeName)->convertToDatabaseValue($value, $platform);
+        }
+        if ($typeName instanceof ParameterType) {
+            return $processParameterType($typeName)($value);
+        }
+        if ($typeName instanceof ArrayParameterType && is_array($value)) {
+            $type = ArrayParameterType::toElementParameterType($typeName);
+            return implode(', ', array_map($processParameterType($type), $value));
+        }
+
+        throw new ValueNotConvertible($value, $typeName);
+    }
+}

docs/en/index.rst

@@ -13,7 +13,6 @@ If this documentation is not helping to answer questions you have about
 Doctrine ORM don't panic. You can get help from different sources:
 
 -  There is a :doc:`FAQ <reference/faq>` with answers to frequent questions.
--  The `Doctrine Mailing List <https://groups.google.com/group/doctrine-user>`_
 -  Slack chat room `#orm <https://www.doctrine-project.org/slack>`_
 -  Report a bug on `GitHub <https://github.com/doctrine/orm/issues>`_.
 -  On `StackOverflow <https://stackoverflow.com/questions/tagged/doctrine-orm>`_

docs/en/reference/advanced-configuration.rst

@@ -29,7 +29,7 @@ steps of configuration.
 
     $config = new Configuration;
     $config->setMetadataCache($metadataCache);
-    $driverImpl = new AttributeDriver(['/path/to/lib/MyProject/Entities'], true);
+    $driverImpl = new AttributeDriver(['/path/to/lib/MyProject/Entities']);
     $config->setMetadataDriverImpl($driverImpl);
     $config->setQueryCache($queryCache);
 
@@ -156,15 +156,59 @@ The attribute driver can be injected in the ``Doctrine\ORM\Configuration``:
     <?php
     use Doctrine\ORM\Mapping\Driver\AttributeDriver;
 
-    $driverImpl = new AttributeDriver(['/path/to/lib/MyProject/Entities'], true);
+    $driverImpl = new AttributeDriver(['/path/to/lib/MyProject/Entities']);
     $config->setMetadataDriverImpl($driverImpl);
 
 The path information to the entities is required for the attribute
 driver, because otherwise mass-operations on all entities through
-the console could not work correctly. All of metadata drivers
-accept either a single directory as a string or an array of
-directories. With this feature a single driver can support multiple
-directories of Entities.
+the console could not work correctly. Metadata drivers can accept either
+a single directory as a string or an array of directories.
+
+AttributeDriver also accepts ``Doctrine\Persistence\Mapping\Driver\ClassLocator``,
+allowing one to customize file discovery logic. You may choose to use Symfony Finder, or
+utilize directory scan with ``FileClassLocator::createFromDirectories()``:
+
+.. code-block:: php
+
+    <?php
+    use Doctrine\ORM\Mapping\Driver\AttributeDriver;
+	use Doctrine\Persistence\Mapping\Driver\FileClassLocator;
+
+	$paths = ['/path/to/lib/MyProject/Entities'];
+	$classLocator = FileClassLocator::createFromDirectories($paths);
+
+    $driverImpl = new AttributeDriver($classLocator);
+    $config->setMetadataDriverImpl($driverImpl);
+
+With this feature, you're empowered to provide a fine-grained iterator of only necessary
+files to the Driver. For example, if you are using Vertical Slice architecture, you can
+exclude ``*Test.php``, ``*Controller.php``, ``*Service.php``, etc.:
+
+.. code-block:: php
+
+    <?php
+	use Symfony\Component\Finder\Finder;
+
+	$finder = new Finder()->files()->in($paths)
+		->name('*.php')
+		->notName(['*Test.php', '*Controller.php', '*Service.php']);
+
+	$classLocator = new FileClassLocator($finder);
+
+If you know the list of class names you want to track, use
+``Doctrine\Persistence\Mapping\Driver\ClassNames``:
+
+.. code-block:: php
+
+    <?php
+	use Doctrine\Persistence\Mapping\Driver\ClassNames;
+	use App\Entity\{Article, Book};
+
+	$entityClasses = [Article::class, Book::class];
+	$classLocator = new ClassNames($entityClasses);
+
+	$driverImpl = new AttributeDriver($classLocator);
+	$config->setMetadataDriverImpl($driverImpl);
 
 Metadata Cache (**RECOMMENDED**)
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

docs/en/reference/attributes-reference.rst

@@ -668,11 +668,6 @@ and in the Context of a :ref:`#[ManyToMany] <attrref_manytomany>`. If this attri
 are missing they will be computed considering the field's name and the current
 :doc:`naming strategy <namingstrategy>`.
 
-The ``#[InverseJoinColumn]`` is the same as ``#[JoinColumn]`` and is used in the context
-of a ``#[ManyToMany]`` attribute declaration to specifiy the details of the join table's
-column information used for the join to the inverse entity. This is only required
-on PHP 8.0, where nested attributes are not yet supported.
-
 Optional parameters:
 
 -  **name**: Column name that holds the foreign key identifier for

docs/en/reference/basic-mapping.rst

@@ -182,6 +182,37 @@ Here is a complete list of ``Column``s attributes (all optional):
 - ``options``: Key-value pairs of options that get passed
   to the underlying database platform when generating DDL statements.
 
+Specifying default values
+~~~~~~~~~~~~~~~~~~~~~~~~~
+
+While it is possible to specify default values for properties in your
+PHP class, Doctrine also allows you to specify default values for
+database columns using the ``default`` key in the ``options`` array of
+the ``Column`` attribute.
+
+When using XML, you can specify object instances using the ``<object>``
+element:
+
+.. code-block:: xml
+
+    <field name="createdAt" type="datetime" insertable="false" updatable="false">
+        <options>
+            <option name="default">
+                <object class="Doctrine\DBAL\Schema\DefaultExpression\CurrentTimestamp"/>
+            </option>
+        </options>
+    </field>
+
+The ``<object>`` element requires a ``class`` attribute specifying the
+fully qualified class name to instantiate.
+
+.. configuration-block::
+   .. literalinclude:: basic-mapping/DefaultValues.php
+       :language: attribute
+
+   .. literalinclude:: basic-mapping/default-values.xml
+       :language: xml
+
 .. _reference-php-mapping-types:
 
 PHP Types Mapping

docs/en/reference/basic-mapping/DefaultValues.php

@@ -0,0 +1,20 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Entity;
+
+use DateTime;
+use Doctrine\DBAL\Schema\DefaultExpression\CurrentTimestamp;
+use Doctrine\ORM\Mapping\Column;
+use Doctrine\ORM\Mapping\Entity;
+
+#[Entity]
+class Message
+{
+    #[Column(options: ['default' => 'Hello World!'])]
+    private string $text;
+
+    #[Column(options: ['default' => new CurrentTimestamp()], insertable: false, updatable: false)]
+    private DateTime $createdAt;
+}

docs/en/reference/basic-mapping/default-values.xml

@@ -0,0 +1,16 @@
+<doctrine-mapping>
+  <entity name="Message">
+    <field name="text">
+      <options>
+        <option name="default">Hello World!</option>
+      </options>
+    </field>
+    <field name="createdAt" insertable="false" updatable="false">
+      <options>
+        <option name="default">
+            <object class="Doctrine\DBAL\Schema\DefaultExpression\CurrentTimestamp"/>
+        </option>
+      </options>
+    </field>
+  </entity>
+</doctrine-mapping>

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

@@ -490,7 +490,7 @@ where you can generate an arbitrary join with the following syntax:
 .. code-block:: php
 
     <?php
-    $query = $em->createQuery('SELECT u FROM User u JOIN Banlist b WITH u.email = b.email');
+    $query = $em->createQuery('SELECT u FROM User u JOIN Banlist b ON u.email = b.email');
 
 With an arbitrary join the result differs from the joins using a mapped property.
 The result of an arbitrary join is an one dimensional array with a mix of the entity from the ``SELECT``
@@ -513,13 +513,15 @@ it loads all the related ``Banlist`` objects corresponding to this ``User``. Thi
 when the DQL is switched to an arbitrary join.
 
 .. note::
-    The differences between WHERE, WITH and HAVING clauses may be
+    The differences between WHERE, WITH, ON and HAVING clauses may be
     confusing.
 
     - WHERE is applied to the results of an entire query
-    - WITH is applied to a join as an additional condition. For
-      arbitrary joins (SELECT f, b FROM Foo f, Bar b WITH f.id = b.id)
-      the WITH is required, even if it is 1 = 1
+    - ON is applied to arbitrary joins as the join condition. For
+      arbitrary joins (SELECT f, b FROM Foo f, Bar b ON f.id = b.id)
+      the ON is required, even if it is 1 = 1. WITH is also
+      supported as alternative keyword for that case for BC reasons.
+    - WITH is applied to an association join as an additional condition.
     - HAVING is applied to the results of a query after
       aggregation (GROUP BY)
 
@@ -1409,8 +1411,7 @@ Result Cache API:
 
     $query->setResultCacheDriver(new ApcCache());
 
-    $query->useResultCache(true)
-          ->setResultCacheLifeTime(3600);
+    $query->enableResultCache(3600);
 
     $result = $query->getResult(); // cache miss
 
@@ -1420,8 +1421,8 @@ Result Cache API:
     $query->setResultCacheId('my_query_result');
     $result = $query->getResult(); // saved in given result cache id.
 
-    // or call useResultCache() with all parameters:
-    $query->useResultCache(true, 3600, 'my_query_result');
+    // or call enableResultCache() with all parameters:
+    $query->enableResultCache(3600, 'my_query_result');
     $result = $query->getResult(); // cache hit!
 
     // Introspection
@@ -1699,9 +1700,14 @@ From, Join and Index by
     SubselectIdentificationVariableDeclaration ::= IdentificationVariableDeclaration
     RangeVariableDeclaration                   ::= AbstractSchemaName ["AS"] AliasIdentificationVariable
     JoinAssociationDeclaration                 ::= JoinAssociationPathExpression ["AS"] AliasIdentificationVariable [IndexBy]
-    Join                                       ::= ["LEFT" ["OUTER"] | "INNER"] "JOIN" (JoinAssociationDeclaration | RangeVariableDeclaration) ["WITH" ConditionalExpression]
+    Join                                       ::= ["LEFT" ["OUTER"] | "INNER"] "JOIN" (JoinAssociationDeclaration ["WITH" ConditionalExpression] | RangeVariableDeclaration [("ON" | "WITH") ConditionalExpression])
     IndexBy                                    ::= "INDEX" "BY" SingleValuedPathExpression
 
+.. note::
+    Using the ``WITH`` keyword for the ``ConditionalExpression`` of a
+    ``RangeVariableDeclaration`` is deprecated and will be removed in
+    ORM 4.0. Use the ``ON`` keyword instead.
+
 Select Expressions
 ~~~~~~~~~~~~~~~~~~
 

docs/en/reference/faq.rst

@@ -18,30 +18,6 @@ In your mapping configuration, the column definition (for example, the
 the ``charset`` and ``collation``. The default values are ``utf8`` and
 ``utf8_unicode_ci``, respectively.
 
-Entity Classes
---------------
-
-How can I add default values to a column?
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-Doctrine does not support to set the default values in columns through the "DEFAULT" keyword in SQL.
-This is not necessary however, you can just use your class properties as default values. These are then used
-upon insert:
-
-.. code-block:: php
-
-    class User
-    {
-        private const STATUS_DISABLED = 0;
-        private const STATUS_ENABLED = 1;
-
-        private string $algorithm = "sha1";
-        /** @var self::STATUS_* */
-        private int $status = self::STATUS_DISABLED;
-    }
-
-.
-
 Mapping
 -------
 

docs/en/reference/inheritance-mapping.rst

@@ -208,6 +208,22 @@ Example:
             // ...
         }
 
+    .. code-block:: xml
+
+        <doctrine-mapping>
+          <entity name="MyProject\Model\Person" inheritance-type="SINGLE_TABLE">
+            <discriminator-column name="discr" type="string" />
+            <discriminator-map>
+                <discriminator-mapping value="person" class="MyProject\Model\Person"/>
+                <discriminator-mapping value="employee" class="MyProject\Model\Employee"/>
+            </discriminator-map>
+          </entity>
+        </doctrine-mapping>
+
+        <doctrine-mapping>
+            <entity name="MyProject\Model\Employee">
+            </entity>
+        </doctrine-mapping>
 
 In this example, the ``#[DiscriminatorMap]`` specifies that in the
 discriminator column, a value of "person" identifies a row as being of type

docs/en/reference/query-builder.rst

@@ -344,10 +344,10 @@ the Query object which can be retrieved from ``EntityManager#createQuery()``.
 Executing a Query
 ^^^^^^^^^^^^^^^^^
 
-The QueryBuilder is a builder object only -  it has no means of actually
-executing the Query. Additionally a set of parameters such as query hints
-cannot be set on the QueryBuilder itself. This is why you always have to convert
-a querybuilder instance into a Query object:
+The QueryBuilder is only a builder object - it has no means of actually
+executing the Query. Additional functionality, such as enabling the result cache,
+cannot be set on the QueryBuilder itself. This is why you must always convert
+a QueryBuilder instance into a Query object:
 
 .. code-block:: php
 
@@ -355,9 +355,8 @@ a querybuilder instance into a Query object:
     // $qb instanceof QueryBuilder
     $query = $qb->getQuery();
 
-    // Set additional Query options
-    $query->setQueryHint('foo', 'bar');
-    $query->useResultCache('my_cache_id');
+    // Enable the result cache
+    $query->enableResultCache(3600, 'my_custom_id');
 
     // Execute Query
     $result = $query->getResult();
@@ -555,6 +554,24 @@ using ``addCriteria``:
     $qb->addCriteria($criteria);
     // then execute your query like normal
 
+Adding hints to a Query
+^^^^^^^^^^^^^^^^^^^^^^^
+
+You can also set query hints to a QueryBuilder by using ``setHint``:
+
+.. code-block:: php
+
+    <?php
+    // ...
+
+    // $qb instanceof QueryBuilder
+    $qb->setHint('hintName', 'hintValue');
+    // then execute your query like normal
+
+The query hint can hold anything the usual query hints can hold
+except null. Those hints will be applied to the query when the
+query is created.
+
 Low Level API
 ^^^^^^^^^^^^^
 

docs/en/reference/second-level-cache.rst

@@ -133,7 +133,7 @@ Caching mode
   * Read Write cache employs locks before update/delete.
   * Use if data needs to be updated.
   * Slowest strategy.
-  * To use it a the cache region implementation must support locking.
+  * To use it the cache region implementation must support locking.
 
 
 Built-in cached persisters

docs/en/reference/tools.rst

@@ -22,7 +22,7 @@ have to register them yourself.
 All the commands of the Doctrine Console require access to the
 ``EntityManager``. You have to inject it into the console application.
 
-Here is an example of a the project-specific ``bin/doctrine`` binary.
+Here is an example of a project-specific ``bin/doctrine`` binary.
 
 .. code-block:: php
 
@@ -96,6 +96,10 @@ The following Commands are currently available:
 -  ``orm:schema-tool:update`` Processes the schema and either
    update the database schema of EntityManager Storage Connection or
    generate the SQL output.
+-  ``orm:debug:event-manager`` Lists event listeners for an entity
+   manager, optionally filtered by event name.
+-  ``orm:debug:entity-listeners`` Lists entity listeners for a given
+   entity, optionally filtered by event name.
 
 The following alias is defined:
 

doctrine-mapping.xsd

@@ -155,10 +155,20 @@
     </xs:restriction>
   </xs:simpleType>
 
+  <xs:complexType name="object">
+    <xs:attribute name="class" type="xs:string" use="required"/>
+    <xs:anyAttribute namespace="##other"/>
+  </xs:complexType>
+
   <xs:complexType name="option" mixed="true">
-    <xs:choice minOccurs="0" maxOccurs="unbounded">
-      <xs:element name="option" type="orm:option"/>
-      <xs:any minOccurs="0" maxOccurs="unbounded" namespace="##other"/>
+    <xs:choice minOccurs="0" maxOccurs="1">
+      <xs:element name="object" type="orm:object"/>
+      <xs:sequence>
+        <xs:choice minOccurs="0" maxOccurs="unbounded">
+          <xs:element name="option" type="orm:option"/>
+          <xs:any minOccurs="0" maxOccurs="unbounded" namespace="##other"/>
+        </xs:choice>
+      </xs:sequence>
     </xs:choice>
     <xs:attribute name="name" type="xs:NMTOKEN" use="required"/>
     <xs:anyAttribute namespace="##other"/>

phpstan-baseline.neon

@@ -619,7 +619,7 @@ parameters:
 			path: src/EntityRepository.php
 
 		-
-			message: '#^Method Doctrine\\ORM\\EntityRepository\:\:matching\(\) should return Doctrine\\Common\\Collections\\AbstractLazyCollection\<int, T of object\>&Doctrine\\Common\\Collections\\Selectable\<int, T of object\> but returns Doctrine\\ORM\\LazyCriteriaCollection\<\(int\|string\), object\>\.$#'
+			message: '#^Method Doctrine\\ORM\\EntityRepository\:\:matching\(\) should return Doctrine\\Common\\Collections\\AbstractLazyCollection\<int, T of object\> but returns Doctrine\\ORM\\LazyCriteriaCollection\<\(int\|string\), object\>\.$#'
 			identifier: return.type
 			count: 1
 			path: src/EntityRepository.php
@@ -696,12 +696,6 @@ parameters:
 			count: 1
 			path: src/Internal/Hydration/AbstractHydrator.php
 
-		-
-			message: '#^Method Doctrine\\ORM\\Internal\\Hydration\\AbstractHydrator\:\:gatherRowData\(\) should return array\{data\: array\<array\>, newObjects\?\: array\<array\{class\: ReflectionClass, args\: array, obj\: object\}\>, scalars\?\: array\} but returns array\{data\: array, newObjects\: array\<array\{class\: ReflectionClass\<object\>, args\: array, obj\?\: object\}\>, scalars\?\: non\-empty\-array\}\.$#'
-			identifier: return.type
-			count: 1
-			path: src/Internal/Hydration/AbstractHydrator.php
-
 		-
 			message: '#^Method Doctrine\\ORM\\Internal\\Hydration\\AbstractHydrator\:\:getClassMetadata\(\) return type with generic class Doctrine\\ORM\\Mapping\\ClassMetadata does not specify its types\: T$#'
 			identifier: missingType.generics
@@ -822,6 +816,12 @@ parameters:
 			count: 1
 			path: src/Internal/HydrationCompleteHandler.php
 
+		-
+			message: '#^Offset int\|null might not exist on array\<int, object\>\.$#'
+			identifier: offsetAccess.notFound
+			count: 1
+			path: src/Internal/StronglyConnectedComponents.php
+
 		-
 			message: '#^Property Doctrine\\ORM\\Internal\\StronglyConnectedComponents\:\:\$representingNodes \(array\<int, object\>\) does not accept array\<int\|string, object\>\.$#'
 			identifier: assign.propertyType
@@ -1410,12 +1410,6 @@ parameters:
 			count: 2
 			path: src/Mapping/Driver/DatabaseDriver.php
 
-		-
-			message: '#^Parameter \#1 \$asset of static method Doctrine\\ORM\\Mapping\\Driver\\DatabaseDriver\:\:getAssetName\(\) expects Doctrine\\DBAL\\Schema\\AbstractAsset, Doctrine\\DBAL\\Schema\\Column\|false given\.$#'
-			identifier: argument.type
-			count: 1
-			path: src/Mapping/Driver/DatabaseDriver.php
-
 		-
 			message: '#^Parameter \#2 \$columnName of method Doctrine\\ORM\\Mapping\\Driver\\DatabaseDriver\:\:getFieldNameForColumn\(\) expects string, string\|false given\.$#'
 			identifier: argument.type
@@ -1447,7 +1441,7 @@ parameters:
 			path: src/Mapping/Driver/XmlDriver.php
 
 		-
-			message: '#^Parameter \#1 \$columnDef of method Doctrine\\ORM\\Mapping\\ClassMetadata\<T of object\>\:\:setDiscriminatorColumn\(\) expects array\{name\: string\|null, fieldName\?\: string\|null, type\?\: string\|null, length\?\: int\|null, columnDefinition\?\: string\|null, enumType\?\: class\-string\<BackedEnum\>\|null, options\?\: array\<string, mixed\>\|null\}\|Doctrine\\ORM\\Mapping\\DiscriminatorColumnMapping\|null, array\{name\: string\|null, type\: string, length\: int, columnDefinition\: string\|null, enumType\: string\|null, options\?\: array\<int\|string, array\<int\|string, mixed\>\|bool\|string\>\} given\.$#'
+			message: '#^Parameter \#1 \$columnDef of method Doctrine\\ORM\\Mapping\\ClassMetadata\<T of object\>\:\:setDiscriminatorColumn\(\) expects array\{name\: string\|null, fieldName\?\: string\|null, type\?\: string\|null, length\?\: int\|null, columnDefinition\?\: string\|null, enumType\?\: class\-string\<BackedEnum\>\|null, options\?\: array\<string, mixed\>\|null\}\|Doctrine\\ORM\\Mapping\\DiscriminatorColumnMapping\|null, array\{name\: string\|null, type\: string, length\: int, columnDefinition\: string\|null, enumType\: string\|null, options\?\: array\<int\|string, array\<int\|string, mixed\>\|bool\|object\|string\>\} given\.$#'
 			identifier: argument.type
 			count: 1
 			path: src/Mapping/Driver/XmlDriver.php
@@ -1477,7 +1471,7 @@ parameters:
 			path: src/Mapping/Driver/XmlDriver.php
 
 		-
-			message: '#^Property Doctrine\\ORM\\Mapping\\ClassMetadata\<T of object\>\:\:\$table \(array\{name\: string, schema\?\: string, indexes\?\: array, uniqueConstraints\?\: array, options\?\: array\<string, mixed\>, quoted\?\: bool\}\) does not accept array\{name\: string, schema\?\: string, indexes\?\: array, uniqueConstraints\?\: array, options\: array\<int\|string, array\<int\|string, mixed\>\|bool\|string\>, quoted\?\: bool\}\.$#'
+			message: '#^Property Doctrine\\ORM\\Mapping\\ClassMetadata\<T of object\>\:\:\$table \(array\{name\: string, schema\?\: string, indexes\?\: array, uniqueConstraints\?\: array, options\?\: array\<string, mixed\>, quoted\?\: bool\}\) does not accept array\{name\: string, schema\?\: string, indexes\?\: array, uniqueConstraints\?\: array, options\: array\<int\|string, array\<int\|string, mixed\>\|bool\|object\|string\>, quoted\?\: bool\}\.$#'
 			identifier: assign.propertyType
 			count: 1
 			path: src/Mapping/Driver/XmlDriver.php
@@ -1536,6 +1530,12 @@ parameters:
 			count: 1
 			path: src/Mapping/LegacyReflectionFields.php
 
+		-
+			message: '#^Strict comparison using \!\=\= between array\<string, string\> and null will always evaluate to true\.$#'
+			identifier: notIdentical.alwaysTrue
+			count: 1
+			path: src/Mapping/ManyToManyOwningSideMapping.php
+
 		-
 			message: '#^Method Doctrine\\ORM\\Mapping\\MappedSuperclass\:\:__construct\(\) has parameter \$repositoryClass with generic class Doctrine\\ORM\\EntityRepository but does not specify its types\: T$#'
 			identifier: missingType.generics
@@ -2557,7 +2557,7 @@ parameters:
 			path: src/Query/Exec/MultiTableUpdateExecutor.php
 
 		-
-			message: '#^Parameter \#3 \$types of method Doctrine\\DBAL\\Connection\:\:executeStatement\(\) expects array\<int\<0, max\>\|string, Doctrine\\DBAL\\ArrayParameterType\|Doctrine\\DBAL\\ParameterType\|Doctrine\\DBAL\\Types\\Type\|string\>, list\<Doctrine\\DBAL\\ArrayParameterType\|Doctrine\\DBAL\\ParameterType\|Doctrine\\DBAL\\Types\\Type\|int\|string\> given\.$#'
+			message: '#^Parameter \#3 \$types of method Doctrine\\DBAL\\Connection\:\:executeStatement\(\) expects array\<int\<0, max\>\|string, Doctrine\\DBAL\\ArrayParameterType\|Doctrine\\DBAL\\ParameterType\|Doctrine\\DBAL\\Types\\Type\|string\>, list\<Doctrine\\DBAL\\ArrayParameterType\:\:ASCII\|Doctrine\\DBAL\\ArrayParameterType\:\:BINARY\|Doctrine\\DBAL\\ArrayParameterType\:\:INTEGER\|Doctrine\\DBAL\\ArrayParameterType\:\:STRING\|Doctrine\\DBAL\\ParameterType\:\:ASCII\|Doctrine\\DBAL\\ParameterType\:\:BINARY\|Doctrine\\DBAL\\ParameterType\:\:BOOLEAN\|Doctrine\\DBAL\\ParameterType\:\:INTEGER\|Doctrine\\DBAL\\ParameterType\:\:LARGE_OBJECT\|Doctrine\\DBAL\\ParameterType\:\:NULL\|Doctrine\\DBAL\\ParameterType\:\:STRING\|Doctrine\\DBAL\\Types\\Type\|int\|string\> given\.$#'
 			identifier: argument.type
 			count: 1
 			path: src/Query/Exec/MultiTableUpdateExecutor.php
@@ -2604,12 +2604,6 @@ parameters:
 			count: 1
 			path: src/Query/Expr/Select.php
 
-		-
-			message: '#^Property Doctrine\\ORM\\Query\\Filter\\SQLFilter\:\:\$parameters \(array\<string, array\{type\: string, value\: mixed, is_list\: bool\}\>\) does not accept non\-empty\-array\<string, array\{value\: mixed, type\: Doctrine\\DBAL\\ArrayParameterType\|Doctrine\\DBAL\\ParameterType\|int\|string, is_list\: bool\}\>\.$#'
-			identifier: assign.propertyType
-			count: 1
-			path: src/Query/Filter/SQLFilter.php
-
 		-
 			message: '#^Method Doctrine\\ORM\\Query\\ParameterTypeInferer\:\:inferType\(\) never returns int so it can be removed from the return type\.$#'
 			identifier: return.unusedType
@@ -2880,12 +2874,6 @@ parameters:
 			count: 1
 			path: src/Tools/Console/Command/GenerateProxiesCommand.php
 
-		-
-			message: '#^Parameter \#2 \$proxyDir of method Doctrine\\ORM\\Proxy\\ProxyFactory\:\:generateProxyClasses\(\) expects string\|null, string\|false given\.$#'
-			identifier: argument.type
-			count: 1
-			path: src/Tools/Console/Command/GenerateProxiesCommand.php
-
 		-
 			message: '#^Method Doctrine\\ORM\\Tools\\Console\\Command\\MappingDescribeCommand\:\:getClassMetadata\(\) return type with generic class Doctrine\\ORM\\Mapping\\ClassMetadata does not specify its types\: T$#'
 			identifier: missingType.generics
@@ -3351,6 +3339,12 @@ parameters:
 			count: 1
 			path: src/UnitOfWork.php
 
+		-
+			message: '#^Access to an undefined property Doctrine\\ORM\\Mapping\\AssociationMapping\:\:\$joinColumns\.$#'
+			identifier: property.notFound
+			count: 1
+			path: src/UnitOfWork.php
+
 		-
 			message: '#^Access to an undefined property Doctrine\\ORM\\Mapping\\ManyToManyInverseSideMapping\|Doctrine\\ORM\\Mapping\\ManyToManyOwningSideMapping\|Doctrine\\ORM\\Mapping\\ManyToOneAssociationMapping\|Doctrine\\ORM\\Mapping\\OneToManyAssociationMapping\|Doctrine\\ORM\\Mapping\\OneToOneInverseSideMapping\|Doctrine\\ORM\\Mapping\\OneToOneOwningSideMapping\:\:\$inversedBy\.$#'
 			identifier: property.notFound
@@ -3366,7 +3360,7 @@ parameters:
 		-
 			message: '#^Access to an undefined property Doctrine\\ORM\\Mapping\\ManyToManyInverseSideMapping\|Doctrine\\ORM\\Mapping\\ManyToManyOwningSideMapping\|Doctrine\\ORM\\Mapping\\ManyToOneAssociationMapping\|Doctrine\\ORM\\Mapping\\OneToManyAssociationMapping\|Doctrine\\ORM\\Mapping\\OneToOneInverseSideMapping\|Doctrine\\ORM\\Mapping\\OneToOneOwningSideMapping\:\:\$mappedBy\.$#'
 			identifier: property.notFound
-			count: 1
+			count: 3
 			path: src/UnitOfWork.php
 
 		-

phpstan-dbal3.neon

@@ -98,6 +98,17 @@ parameters:
             identifier: argument.unresolvableType
             path: src/Mapping/Driver/DatabaseDriver.php
 
+        -
+            message: '#^Parameter \#1 \$asset of static method Doctrine\\ORM\\Mapping\\Driver\\DatabaseDriver\:\:getAssetName\(\) expects Doctrine\\DBAL\\Schema\\AbstractAsset, Doctrine\\DBAL\\Schema\\Column\|false given\.$#'
+            identifier: argument.type
+            path: src/Mapping/Driver/DatabaseDriver.php
+
+        -
+            message: '#^Instantiated class Doctrine\\DBAL\\Schema\\DefaultExpression\\\w+ not found\.$#'
+            identifier: class.notFound
+            path: src/Tools/SchemaTool.php
+
+
         # To be removed in 4.0
         -
             message: '#Negated boolean expression is always false\.#'

phpstan.neon

@@ -12,6 +12,10 @@ parameters:
             message: '~^Match expression does not handle remaining values:~'
             path: src/Utility/PersisterHelper.php
 
+        # The return type is already narrow enough.
+        - '~^Method Doctrine\\ORM\\Query\\ParameterTypeInferer\:\:inferType\(\) never returns ''[a-z_]+'' so it can be removed from the return type\.$~'
+        - '~^Method Doctrine\\ORM\\Query\\ParameterTypeInferer\:\:inferType\(\) never returns Doctrine\\DBAL\\(?:Array)?ParameterType\:\:[A-Z_]+ so it can be removed from the return type\.$~'
+
         # DBAL 4 compatibility
         -
             message: '~^Method Doctrine\\ORM\\Query\\AST\\Functions\\TrimFunction::getTrimMode\(\) never returns .* so it can be removed from the return type\.$~'

src/AbstractQuery.php

@@ -1065,7 +1065,7 @@ abstract class AbstractQuery
     }
 
     /**
-     * Executes the query and returns a the resulting Statement object.
+     * Executes the query and returns the resulting Statement object.
      *
      * @return Result|int The executed database statement that holds
      *                    the results, or an integer indicating how

src/Internal/Hydration/AbstractHydrator.php

@@ -17,6 +17,7 @@ use Doctrine\ORM\UnitOfWork;
 use Generator;
 use LogicException;
 use ReflectionClass;
+use ReflectionEnum;
 
 use function array_key_exists;
 use function array_keys;
@@ -597,13 +598,18 @@ abstract class AbstractHydrator
      */
     final protected function buildEnum(mixed $value, string $enumType): BackedEnum|array
     {
+        $reflection  = new ReflectionEnum($enumType);
+        $isIntBacked = $reflection->isBacked() && $reflection->getBackingType()->getName() === 'int';
+
         if (is_array($value)) {
             return array_map(
-                static fn ($value) => $enumType::from($value),
+                static fn ($value) => $enumType::from($isIntBacked ? (int) $value : $value),
                 $value,
             );
         }
 
+        $value = $isIntBacked ? (int) $value : $value;
+
         return $enumType::from($value);
     }
 }

src/Internal/Hydration/ScalarColumnHydrator.php

@@ -7,7 +7,6 @@ namespace Doctrine\ORM\Internal\Hydration;
 use Doctrine\DBAL\Driver\Exception;
 use Doctrine\ORM\Exception\MultipleSelectorsFoundException;
 
-use function array_column;
 use function count;
 
 /**
@@ -27,8 +26,6 @@ final class ScalarColumnHydrator extends AbstractHydrator
             throw MultipleSelectorsFoundException::create($this->resultSetMapping()->fieldMappings);
         }
 
-        $result = $this->statement()->fetchAllNumeric();
-
-        return array_column($result, 0);
+        return $this->statement()->fetchFirstColumn();
     }
 }

src/Mapping/Builder/AssociationBuilder.php

@@ -113,6 +113,10 @@ class AssociationBuilder
         string|null $onDelete = null,
         string|null $columnDef = null,
     ): static {
+        if ($this->mapping['id'] ?? false) {
+            $nullable = null;
+        }
+
         $this->joinColumns[] = [
             'name' => $columnName,
             'referencedColumnName' => $referencedColumnName,
@@ -133,6 +137,9 @@ class AssociationBuilder
     public function makePrimaryKey(): static
     {
         $this->mapping['id'] = true;
+        foreach ($this->joinColumns ?? [] as $i => $joinColumn) {
+            $this->joinColumns[$i]['nullable'] = null;
+        }
 
         return $this;
     }

src/Mapping/Builder/ManyToManyAssociationBuilder.php

@@ -24,6 +24,30 @@ class ManyToManyAssociationBuilder extends OneToManyAssociationBuilder
         return $this;
     }
 
+    /**
+     * Add Join Columns.
+     *
+     * @return $this
+     */
+    public function addJoinColumn(
+        string $columnName,
+        string $referencedColumnName,
+        bool $nullable = true,
+        bool $unique = false,
+        string|null $onDelete = null,
+        string|null $columnDef = null,
+    ): static {
+        $this->joinColumns[] = [
+            'name' => $columnName,
+            'referencedColumnName' => $referencedColumnName,
+            'unique' => $unique,
+            'onDelete' => $onDelete,
+            'columnDefinition' => $columnDef,
+        ];
+
+        return $this;
+    }
+
     /**
      * Adds Inverse Join Columns.
      *
@@ -40,7 +64,6 @@ class ManyToManyAssociationBuilder extends OneToManyAssociationBuilder
         $this->inverseJoinColumns[] = [
             'name' => $columnName,
             'referencedColumnName' => $referencedColumnName,
-            'nullable' => $nullable,
             'unique' => $unique,
             'onDelete' => $onDelete,
             'columnDefinition' => $columnDef,

src/Mapping/ClassMetadata.php

@@ -546,7 +546,7 @@ class ClassMetadata implements PersistenceClassMetadata, Stringable
      */
     public LegacyReflectionFields|array $reflFields = [];
 
-    /** @var array<string, PropertyAccessors\PropertyAccessor> */
+    /** @var array<string, PropertyAccessor> */
     public array $propertyAccessors = [];
 
     private InstantiatorInterface|null $instantiator = null;
@@ -584,7 +584,7 @@ class ClassMetadata implements PersistenceClassMetadata, Stringable
     /**
      * Gets the ReflectionProperties of the mapped class.
      *
-     * @return PropertyAccessor[] An array of PropertyAccessor instances.
+     * @return array<string, PropertyAccessor> An array of PropertyAccessor instances by name.
      */
     public function getPropertyAccessors(): array
     {
@@ -2204,6 +2204,20 @@ class ClassMetadata implements PersistenceClassMetadata, Stringable
                 throw MappingException::invalidDiscriminatorColumnType($this->name, $columnDef['type']);
             }
 
+            if (isset($columnDef['enumType'])) {
+                if (! enum_exists($columnDef['enumType'])) {
+                    throw MappingException::nonEnumTypeMapped($this->name, $columnDef['fieldName'], $columnDef['enumType']);
+                }
+
+                if (
+                    defined('Doctrine\DBAL\Types\Types::ENUM')
+                    && $columnDef['type'] === Types::ENUM
+                    && ! isset($columnDef['options']['values'])
+                ) {
+                    $columnDef['options']['values'] = array_column($columnDef['enumType']::cases(), 'value');
+                }
+            }
+
             $this->discriminatorColumn = DiscriminatorColumnMapping::fromMappingArray($columnDef);
         }
     }
@@ -2222,6 +2236,8 @@ class ClassMetadata implements PersistenceClassMetadata, Stringable
      * Used for JOINED and SINGLE_TABLE inheritance mapping strategies.
      *
      * @param array<int|string, string> $map
+     *
+     * @throws MappingException
      */
     public function setDiscriminatorMap(array $map): void
     {
@@ -2241,6 +2257,16 @@ class ClassMetadata implements PersistenceClassMetadata, Stringable
             );
         }
 
+        $values = $this->discriminatorColumn->options['values'] ?? null;
+
+        if ($values !== null) {
+            $diff = array_diff(array_keys($map), $values);
+
+            if ($diff !== []) {
+                throw MappingException::invalidEntriesInDiscriminatorMap(array_values($diff), $this->name, $this->discriminatorColumn->enumType);
+            }
+        }
+
         foreach ($map as $value => $className) {
             $this->addDiscriminatorMapClass($value, $className);
         }
@@ -2454,9 +2480,9 @@ class ClassMetadata implements PersistenceClassMetadata, Stringable
 
         if (! isset($mapping['default'])) {
             if (in_array($mapping['type'], ['integer', 'bigint', 'smallint'], true)) {
-                $mapping['default'] = 1;
+                $mapping['options']['default'] = 1;
             } elseif ($mapping['type'] === 'datetime') {
-                $mapping['default'] = 'CURRENT_TIMESTAMP';
+                $mapping['options']['default'] = 'CURRENT_TIMESTAMP';
             } else {
                 throw MappingException::unsupportedOptimisticLockingType($this->name, $mapping['fieldName'], $mapping['type']);
             }

src/Mapping/Driver/AttributeDriver.php

@@ -10,6 +10,7 @@ use Doctrine\ORM\Mapping\Builder\EntityListenerBuilder;
 use Doctrine\ORM\Mapping\ClassMetadata;
 use Doctrine\ORM\Mapping\MappingException;
 use Doctrine\Persistence\Mapping\ClassMetadata as PersistenceClassMetadata;
+use Doctrine\Persistence\Mapping\Driver\ClassLocator;
 use Doctrine\Persistence\Mapping\Driver\ColocatedMappingDriver;
 use Doctrine\Persistence\Mapping\Driver\MappingDriver;
 use InvalidArgumentException;
@@ -35,10 +36,10 @@ class AttributeDriver implements MappingDriver
     private readonly AttributeReader $reader;
 
     /**
-     * @param array<string> $paths
-     * @param true          $reportFieldsWhereDeclared no-op, to be removed in 4.0
+     * @param string[]|ClassLocator $paths                     a ClassLocator, or an array of directories.
+     * @param true                  $reportFieldsWhereDeclared no-op, to be removed in 4.0
      */
-    public function __construct(array $paths, bool $reportFieldsWhereDeclared = true)
+    public function __construct(array|ClassLocator $paths, bool $reportFieldsWhereDeclared = true)
     {
         if (! $reportFieldsWhereDeclared) {
             throw new InvalidArgumentException(sprintf(
@@ -48,7 +49,12 @@ class AttributeDriver implements MappingDriver
         }
 
         $this->reader = new AttributeReader();
-        $this->addPaths($paths);
+
+        if ($paths instanceof ClassLocator) {
+            $this->classLocator = $paths;
+        } else {
+            $this->addPaths($paths);
+        }
     }
 
     public function isTransient(string $className): bool

src/Mapping/Driver/XmlDriver.php

@@ -4,8 +4,6 @@ declare(strict_types=1);
 
 namespace Doctrine\ORM\Mapping\Driver;
 
-use Doctrine\Common\Collections\Criteria;
-use Doctrine\Common\Collections\Order;
 use Doctrine\ORM\Mapping\Builder\EntityListenerBuilder;
 use Doctrine\ORM\Mapping\ClassMetadata;
 use Doctrine\ORM\Mapping\MappingException;
@@ -18,10 +16,10 @@ use LogicException;
 use SimpleXMLElement;
 
 use function assert;
+use function class_exists;
 use function constant;
 use function count;
 use function defined;
-use function enum_exists;
 use function explode;
 use function extension_loaded;
 use function file_get_contents;
@@ -409,10 +407,7 @@ class XmlDriver extends FileDriver
                 if (isset($oneToManyElement->{'order-by'})) {
                     $orderBy = [];
                     foreach ($oneToManyElement->{'order-by'}->{'order-by-field'} ?? [] as $orderByField) {
-                        $orderBy[(string) $orderByField['name']] = isset($orderByField['direction'])
-                            ? (string) $orderByField['direction']
-                            // @phpstan-ignore classConstant.deprecated
-                            : (enum_exists(Order::class) ? Order::Ascending->value : Criteria::ASC);
+                        $orderBy[(string) $orderByField['name']] = (string) ($orderByField['direction'] ?? 'ASC');
                     }
 
                     $mapping['orderBy'] = $orderBy;
@@ -538,10 +533,7 @@ class XmlDriver extends FileDriver
                 if (isset($manyToManyElement->{'order-by'})) {
                     $orderBy = [];
                     foreach ($manyToManyElement->{'order-by'}->{'order-by-field'} ?? [] as $orderByField) {
-                        $orderBy[(string) $orderByField['name']] = isset($orderByField['direction'])
-                            ? (string) $orderByField['direction']
-                            // @phpstan-ignore classConstant.deprecated
-                            : (enum_exists(Order::class) ? Order::Ascending->value : Criteria::ASC);
+                        $orderBy[(string) $orderByField['name']] = (string) ($orderByField['direction'] ?? 'ASC');
                     }
 
                     $mapping['orderBy'] = $orderBy;
@@ -665,15 +657,30 @@ class XmlDriver extends FileDriver
      * Parses (nested) option elements.
      *
      * @return mixed[] The options array.
-     * @phpstan-return array<int|string, array<int|string, mixed|string>|bool|string>
+     * @phpstan-return array<int|string, array<int|string, mixed|string>|bool|string|object>
      */
     private function parseOptions(SimpleXMLElement|null $options): array
     {
         $array = [];
 
         foreach ($options ?? [] as $option) {
+            $value = null;
             if ($option->count()) {
-                $value = $this->parseOptions($option->children());
+                // Check if this option contains an <object> element
+                $children         = $option->children();
+                $hasObjectElement = false;
+
+                foreach ($children as $child) {
+                    if ($child->getName() === 'object') {
+                        $value            = $this->parseObjectElement($child);
+                        $hasObjectElement = true;
+                        break;
+                    }
+                }
+
+                if (! $hasObjectElement) {
+                    $value = $this->parseOptions($children);
+                }
             } else {
                 $value = (string) $option;
             }
@@ -693,6 +700,33 @@ class XmlDriver extends FileDriver
         return $array;
     }
 
+    /**
+     * Parses an <object> element and returns the instantiated object.
+     *
+     * @param SimpleXMLElement $objectElement The XML element.
+     *
+     * @return object The instantiated object.
+     *
+     * @throws MappingException If the object specification is invalid.
+     * @throws InvalidArgumentException If the class does not exist.
+     */
+    private function parseObjectElement(SimpleXMLElement $objectElement): object
+    {
+        $attributes = $objectElement->attributes();
+
+        if (! isset($attributes->class)) {
+            throw MappingException::missingRequiredOption('object', 'class');
+        }
+
+        $className = (string) $attributes->class;
+
+        if (! class_exists($className)) {
+            throw new InvalidArgumentException(sprintf('Class "%s" does not exist', $className));
+        }
+
+        return new $className();
+    }
+
     /**
      * Constructs a joinColumn mapping array based on the information
      * found in the given SimpleXMLElement.

src/Mapping/FieldMapping.php

@@ -71,7 +71,9 @@ final class FieldMapping implements ArrayAccess
     public string|null $declaredField = null;
     public array|null $options        = null;
     public bool|null $version         = null;
-    public string|int|null $default   = null;
+
+    /** @deprecated Use options with 'default' key instead */
+    public string|int|null $default = null;
 
     /**
      * @param string $type       The type name of the mapped field. Can be one of
@@ -140,7 +142,7 @@ final class FieldMapping implements ArrayAccess
     {
         $serialized = ['type', 'fieldName', 'columnName'];
 
-        foreach (['nullable', 'notInsertable', 'notUpdatable', 'id', 'unique', 'version', 'quoted'] as $boolKey) {
+        foreach (['nullable', 'notInsertable', 'notUpdatable', 'id', 'unique', 'version', 'quoted', 'index'] as $boolKey) {
             if ($this->$boolKey) {
                 $serialized[] = $boolKey;
             }

src/Mapping/JoinTableMapping.php

@@ -84,9 +84,14 @@ final class JoinTableMapping implements ArrayAccess
     /** @return mixed[] */
     public function toArray(): array
     {
-        $array = (array) $this;
+        $array                       = (array) $this;
+        $toArray                     = static function (JoinColumnMapping $column) {
+            $array = (array) $column;
 
-        $toArray                     = static fn (JoinColumnMapping $column): array => (array) $column;
+            unset($array['nullable']);
+
+            return $array;
+        };
         $array['joinColumns']        = array_map($toArray, $array['joinColumns']);
         $array['inverseJoinColumns'] = array_map($toArray, $array['inverseJoinColumns']);
 

src/Mapping/ManyToManyOwningSideMapping.php

@@ -4,6 +4,8 @@ declare(strict_types=1);
 
 namespace Doctrine\ORM\Mapping;
 
+use Doctrine\Deprecations\Deprecation;
+
 use function strtolower;
 use function trim;
 
@@ -127,6 +129,20 @@ final class ManyToManyOwningSideMapping extends ToManyOwningSideMapping implemen
         $mapping->joinTableColumns = [];
 
         foreach ($mapping->joinTable->joinColumns as $joinColumn) {
+            if ($joinColumn->nullable !== null) {
+                Deprecation::trigger(
+                    'doctrine/orm',
+                    'https://github.com/doctrine/orm/pull/12126',
+                    <<<'DEPRECATION'
+                    Specifying the "nullable" attribute for join columns in many-to-many associations (here, %s::$%s) is a no-op.
+                    The ORM will always set it to false.
+                    Doing so is deprecated and will be an error in 4.0.
+                    DEPRECATION,
+                    $mapping->sourceEntity,
+                    $mapping->fieldName,
+                );
+            }
+
             $joinColumn->nullable = false;
 
             if (empty($joinColumn->referencedColumnName)) {
@@ -152,6 +168,20 @@ final class ManyToManyOwningSideMapping extends ToManyOwningSideMapping implemen
         }
 
         foreach ($mapping->joinTable->inverseJoinColumns as $inverseJoinColumn) {
+            if ($inverseJoinColumn->nullable !== null) {
+                Deprecation::trigger(
+                    'doctrine/orm',
+                    'https://github.com/doctrine/orm/pull/12126',
+                    <<<'DEPRECATION'
+                    Specifying the "nullable" attribute for join columns in many-to-many associations (here, %s::$%s) is a no-op.
+                    The ORM will always set it to false.
+                    Doing so is deprecated and will be an error in 4.0.
+                    DEPRECATION,
+                    $mapping->targetEntity,
+                    $mapping->fieldName,
+                );
+            }
+
             $inverseJoinColumn->nullable = false;
 
             if (empty($inverseJoinColumn->referencedColumnName)) {

src/Mapping/MappingException.php

@@ -179,7 +179,7 @@ class MappingException extends PersistenceMappingException implements ORMExcepti
 
     public static function joinTableRequired(string $fieldName): self
     {
-        return new self(sprintf("The mapping of field '%s' requires an the 'joinTable' attribute.", $fieldName));
+        return new self(sprintf("The mapping of field '%s' requires the 'joinTable' attribute.", $fieldName));
     }
 
     /**
@@ -329,6 +329,24 @@ class MappingException extends PersistenceMappingException implements ORMExcepti
         );
     }
 
+    /**
+     * Returns an exception that indicates that discriminator entries used in a discriminator map
+     * does not exist in the backed enum provided by enumType option.
+     *
+     * @param array<int,int|string> $entries     The discriminator entries that could not be found.
+     * @param string                $owningClass The class that declares the discriminator map.
+     * @param string                $enumType    The enum that entries were checked against.
+     */
+    public static function invalidEntriesInDiscriminatorMap(array $entries, string $owningClass, string $enumType): self
+    {
+        return new self(sprintf(
+            "The entries %s in the discriminator map of class '%s' do not correspond to enum cases of '%s'.",
+            implode(', ', array_map(static fn ($entry): string => sprintf("'%s'", $entry), $entries)),
+            $owningClass,
+            $enumType,
+        ));
+    }
+
     /**
      * Returns an exception that indicates that a class used in a discriminator map does not exist.
      * An example would be an outdated (maybe renamed) classname.

src/Mapping/PropertyAccessors/ReadonlyAccessor.php

@@ -10,6 +10,8 @@ use ReflectionProperty;
 
 use function sprintf;
 
+use const PHP_VERSION_ID;
+
 /** @internal */
 class ReadonlyAccessor implements PropertyAccessor
 {
@@ -26,7 +28,12 @@ class ReadonlyAccessor implements PropertyAccessor
 
     public function setValue(object $object, mixed $value): void
     {
-        if (! $this->reflectionProperty->isInitialized($object)) {
+        /* For lazy properties, skip the isInitialized() check
+           because it would trigger the initialization of the whole object. */
+        if (
+            PHP_VERSION_ID >= 80400 && $this->reflectionProperty->isLazy($object)
+            || ! $this->reflectionProperty->isInitialized($object)
+        ) {
             $this->parent->setValue($object, $value);
 
             return;

src/Mapping/ToOneOwningSideMapping.php

@@ -4,6 +4,7 @@ declare(strict_types=1);
 
 namespace Doctrine\ORM\Mapping;
 
+use Doctrine\Deprecations\Deprecation;
 use RuntimeException;
 
 use function array_flip;
@@ -131,6 +132,20 @@ abstract class ToOneOwningSideMapping extends OwningSideMapping implements ToOne
 
         foreach ($mapping->joinColumns as $joinColumn) {
             if ($mapping->id) {
+                if ($joinColumn->nullable !== null) {
+                    Deprecation::trigger(
+                        'doctrine/orm',
+                        'https://github.com/doctrine/orm/pull/12126',
+                        <<<'DEPRECATION'
+                        Specifying the "nullable" attribute for join columns in to-one associations (here, %s::$%s) that are part of the identifier is a no-op.
+                        The ORM will always set it to false.
+                        Doing so is deprecated and will be an error in 4.0.
+                        DEPRECATION,
+                        $mapping->sourceEntity,
+                        $mapping->fieldName,
+                    );
+                }
+
                 $joinColumn->nullable = false;
             } elseif ($joinColumn->nullable === null) {
                 $joinColumn->nullable = true;
@@ -200,7 +215,12 @@ abstract class ToOneOwningSideMapping extends OwningSideMapping implements ToOne
 
         $joinColumns = [];
         foreach ($array['joinColumns'] as $column) {
-            $joinColumns[] = (array) $column;
+            $columnArray = (array) $column;
+            if ($this->id) {
+                unset($columnArray['nullable']);
+            }
+
+            $joinColumns[] = $columnArray;
         }
 
         $array['joinColumns'] = $joinColumns;

src/ORMInvalidArgumentException.php

@@ -160,6 +160,11 @@ EXCEPTION
         return new self('You must configure a proxy directory. See docs for details');
     }
 
+    public static function lazyGhostUnavailable(): self
+    {
+        return new self('Symfony LazyGhost is not available. Please install the "symfony/var-exporter" package version 6.4 or 7 to use this feature or enable PHP 8.4 native lazy objects.');
+    }
+
     public static function proxyNamespaceRequired(): self
     {
         return new self('You must configure a proxy namespace');

src/ORMSetup.php

@@ -7,6 +7,7 @@ namespace Doctrine\ORM;
 use Doctrine\Deprecations\Deprecation;
 use Doctrine\ORM\Mapping\Driver\AttributeDriver;
 use Doctrine\ORM\Mapping\Driver\XmlDriver;
+use Doctrine\Persistence\Mapping\Driver\ClassLocator;
 use Psr\Cache\CacheItemPoolInterface;
 use Redis;
 use RuntimeException;
@@ -28,10 +29,10 @@ final class ORMSetup
     /**
      * Creates a configuration with an attribute metadata driver.
      *
-     * @param string[] $paths
+     * @param string[]|ClassLocator $paths
      */
     public static function createAttributeMetadataConfiguration(
-        array $paths,
+        array|ClassLocator $paths,
         bool $isDevMode = false,
         string|null $proxyDir = null,
         CacheItemPoolInterface|null $cache = null,
@@ -55,10 +56,10 @@ final class ORMSetup
     /**
      * Creates a configuration with an attribute metadata driver.
      *
-     * @param string[] $paths
+     * @param string[]|ClassLocator $paths
      */
     public static function createAttributeMetadataConfig(
-        array $paths,
+        array|ClassLocator $paths,
         bool $isDevMode = false,
         string|null $cacheNamespaceSeed = null,
         CacheItemPoolInterface|null $cache = null,

src/Persisters/Entity/BasicEntityPersister.php

@@ -1668,6 +1668,11 @@ class BasicEntityPersister implements EntityPersister
                     $value = [$value];
                 }
 
+                if ($value === []) {
+                    $selectedColumns[] = '1=0';
+                    continue;
+                }
+
                 $nullKeys      = array_keys($value, null, true);
                 $nonNullValues = array_diff_key($value, array_flip($nullKeys));
 

src/Proxy/ProxyFactory.php

@@ -37,6 +37,7 @@ use function is_dir;
 use function is_int;
 use function is_writable;
 use function ltrim;
+use function method_exists;
 use function mkdir;
 use function preg_match_all;
 use function random_bytes;
@@ -161,6 +162,11 @@ EOPHP;
                 );
             }
 
+            // @phpstan-ignore function.impossibleType (This method has been removed in Symfony 8)
+            if (! method_exists(ProxyHelper::class, 'generateLazyGhost')) {
+                throw ORMInvalidArgumentException::lazyGhostUnavailable();
+            }
+
             if (! $proxyDir) {
                 throw ORMInvalidArgumentException::proxyDirectoryRequired();
             }
@@ -464,7 +470,7 @@ EOPHP;
 
     private function generateUseLazyGhostTrait(ClassMetadata $class): string
     {
-        // @phpstan-ignore staticMethod.deprecated (Because we support Symfony < 7.3)
+        // @phpstan-ignore staticMethod.notFound (This method has been removed in Symfony 8)
         $code = ProxyHelper::generateLazyGhost($class->getReflectionClass());
         $code = substr($code, 7 + (int) strpos($code, "\n{"));
         $code = substr($code, 0, (int) strpos($code, "\n}"));

src/Query/Exec/SingleSelectExecutor.php

@@ -6,18 +6,28 @@ namespace Doctrine\ORM\Query\Exec;
 
 use Doctrine\DBAL\Connection;
 use Doctrine\DBAL\Result;
+use Doctrine\Deprecations\Deprecation;
 use Doctrine\ORM\Query\AST\SelectStatement;
 use Doctrine\ORM\Query\SqlWalker;
 
 /**
  * Executor that executes the SQL statement for simple DQL SELECT statements.
  *
+ * @deprecated This class is no longer needed by the ORM and will be removed in 4.0.
+ *
  * @link        www.doctrine-project.org
  */
 class SingleSelectExecutor extends AbstractSqlExecutor
 {
     public function __construct(SelectStatement $AST, SqlWalker $sqlWalker)
     {
+        Deprecation::trigger(
+            'doctrine/orm',
+            'https://github.com/doctrine/orm/pull/11188/',
+            'The %s is no longer needed by the ORM and will be removed in 4.0',
+            self::class,
+        );
+
         $this->sqlStatements = $sqlWalker->walkSelectStatement($AST);
     }
 

src/Query/Filter/Parameter.php

@@ -0,0 +1,20 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Doctrine\ORM\Query\Filter;
+
+use Doctrine\DBAL\ArrayParameterType;
+use Doctrine\DBAL\ParameterType;
+
+/** @internal */
+final class Parameter
+{
+    /** @param ParameterType::*|ArrayParameterType::*|string $type */
+    public function __construct(
+        public readonly mixed $value,
+        public readonly ParameterType|ArrayParameterType|int|string $type,
+        public readonly bool $isList,
+    ) {
+    }
+}

src/Query/Filter/SQLFilter.php

@@ -29,7 +29,7 @@ abstract class SQLFilter implements Stringable
     /**
      * Parameters for the filter.
      *
-     * @phpstan-var array<string,array{type: string, value: mixed, is_list: bool}>
+     * @phpstan-var array<string, Parameter>
      */
     private array $parameters = [];
 
@@ -49,7 +49,7 @@ abstract class SQLFilter implements Stringable
      */
     final public function setParameterList(string $name, array $values, string $type = Types::STRING): static
     {
-        $this->parameters[$name] = ['value' => $values, 'type' => $type, 'is_list' => true];
+        $this->parameters[$name] = new Parameter(value: $values, type: $type, isList: true);
 
         // Keep the parameters sorted for the hash
         ksort($this->parameters);
@@ -71,11 +71,11 @@ abstract class SQLFilter implements Stringable
      */
     final public function setParameter(string $name, mixed $value, string|null $type = null): static
     {
-        if ($type === null) {
-            $type = ParameterTypeInferer::inferType($value);
-        }
-
-        $this->parameters[$name] = ['value' => $value, 'type' => $type, 'is_list' => false];
+        $this->parameters[$name] = new Parameter(
+            value: $value,
+            type: $type ?? ParameterTypeInferer::inferType($value),
+            isList: false,
+        );
 
         // Keep the parameters sorted for the hash
         ksort($this->parameters);
@@ -102,11 +102,11 @@ abstract class SQLFilter implements Stringable
             throw new InvalidArgumentException("Parameter '" . $name . "' does not exist.");
         }
 
-        if ($this->parameters[$name]['is_list']) {
+        if ($this->parameters[$name]->isList) {
             throw FilterException::cannotConvertListParameterIntoSingleValue($name);
         }
 
-        return $this->em->getConnection()->quote((string) $this->parameters[$name]['value']);
+        return $this->em->getConnection()->quote((string) $this->parameters[$name]->value);
     }
 
     /**
@@ -124,7 +124,7 @@ abstract class SQLFilter implements Stringable
             throw new InvalidArgumentException("Parameter '" . $name . "' does not exist.");
         }
 
-        if ($this->parameters[$name]['is_list'] === false) {
+        if (! $this->parameters[$name]->isList) {
             throw FilterException::cannotConvertSingleParameterIntoListValue($name);
         }
 
@@ -133,7 +133,7 @@ abstract class SQLFilter implements Stringable
 
         $quoted = array_map(
             static fn (mixed $value): string => $connection->quote((string) $value),
-            $param['value'],
+            $param->value,
         );
 
         return implode(',', $quoted);
@@ -152,7 +152,14 @@ abstract class SQLFilter implements Stringable
      */
     final public function __toString(): string
     {
-        return serialize($this->parameters);
+        return serialize(array_map(
+            static fn (Parameter $value): array => [
+                'value'  => $value->value,
+                'type'   => $value->type,
+                'is_list' => $value->isList,
+            ],
+            $this->parameters,
+        ));
     }
 
     /**

src/Query/ParameterTypeInferer.php

@@ -25,9 +25,9 @@ use function is_int;
 final class ParameterTypeInferer
 {
     /**
-     * Infers type of a given value, returning a compatible constant:
-     * - Type (\Doctrine\DBAL\Types\Type::*)
-     * - Connection (\Doctrine\DBAL\Connection::PARAM_*)
+     * Infers the type of a given value
+     *
+     * @return ParameterType::*|ArrayParameterType::*|Types::*
      */
     public static function inferType(mixed $value): ParameterType|ArrayParameterType|int|string
     {

src/Query/Parser.php

@@ -1609,8 +1609,7 @@ final class Parser
 
     /**
      * Join ::= ["LEFT" ["OUTER"] | "INNER"] "JOIN"
-     *          (JoinAssociationDeclaration | RangeVariableDeclaration)
-     *          ["WITH" ConditionalExpression]
+     *          (JoinAssociationDeclaration ["WITH" ConditionalExpression] | RangeVariableDeclaration [("ON" | "WITH") ConditionalExpression])
      */
     public function Join(): AST\Join
     {
@@ -1644,21 +1643,31 @@ final class Parser
 
         $next = $this->lexer->glimpse();
         assert($next !== null);
-        $joinDeclaration = $next->type === TokenType::T_DOT ? $this->JoinAssociationDeclaration() : $this->RangeVariableDeclaration();
-        $adhocConditions = $this->lexer->isNextToken(TokenType::T_WITH);
-        $join            = new AST\Join($joinType, $joinDeclaration);
+        $conditionalExpression = null;
 
-        // Describe non-root join declaration
-        if ($joinDeclaration instanceof AST\RangeVariableDeclaration) {
+        if ($next->type === TokenType::T_DOT) {
+            $joinDeclaration = $this->JoinAssociationDeclaration();
+
+            if ($this->lexer->isNextToken(TokenType::T_WITH)) {
+                $this->match(TokenType::T_WITH);
+                $conditionalExpression = $this->ConditionalExpression();
+            }
+        } else {
+            $joinDeclaration         = $this->RangeVariableDeclaration();
             $joinDeclaration->isRoot = false;
+
+            if ($this->lexer->isNextToken(TokenType::T_ON)) {
+                $this->match(TokenType::T_ON);
+                $conditionalExpression = $this->ConditionalExpression();
+            } elseif ($this->lexer->isNextToken(TokenType::T_WITH)) {
+                $this->match(TokenType::T_WITH);
+                $conditionalExpression = $this->ConditionalExpression();
+                Deprecation::trigger('doctrine/orm', 'https://github.com/doctrine/orm/issues/12192', 'Using WITH for the join condition of arbitrary joins is deprecated. Use ON instead.');
+            }
         }
 
-        // Check for ad-hoc Join conditions
-        if ($adhocConditions) {
-            $this->match(TokenType::T_WITH);
-
-            $join->conditionalExpression = $this->ConditionalExpression();
-        }
+        $join                        = new AST\Join($joinType, $joinDeclaration);
+        $join->conditionalExpression = $conditionalExpression;
 
         return $join;
     }

src/Query/ParserResult.php

@@ -4,6 +4,7 @@ declare(strict_types=1);
 
 namespace Doctrine\ORM\Query;
 
+use Doctrine\Deprecations\Deprecation;
 use Doctrine\ORM\Query;
 use Doctrine\ORM\Query\Exec\AbstractSqlExecutor;
 use Doctrine\ORM\Query\Exec\SqlFinalizer;
@@ -71,20 +72,36 @@ class ParserResult
     /**
      * Sets the SQL executor that should be used for this ParserResult.
      *
-     * @deprecated
+     * @deprecated The SqlExecutor will be removed from ParserResult in 4.0. Provide a SqlFinalizer instead that can create the executor.
      */
     public function setSqlExecutor(AbstractSqlExecutor $executor): void
     {
+        Deprecation::trigger(
+            'doctrine/orm',
+            'https://github.com/doctrine/orm/pull/11188',
+            'The SqlExecutor will be removed from %s in 4.0. Provide a %s instead that can create the executor.',
+            self::class,
+            SqlFinalizer::class,
+        );
+
         $this->sqlExecutor = $executor;
     }
 
     /**
      * Gets the SQL executor used by this ParserResult.
      *
-     * @deprecated
+     * @deprecated The SqlExecutor will be removed from ParserResult in 4.0. Provide a SqlFinalizer instead that can create the executor.
      */
     public function getSqlExecutor(): AbstractSqlExecutor
     {
+        Deprecation::trigger(
+            'doctrine/orm',
+            'https://github.com/doctrine/orm/pull/11188',
+            'The SqlExecutor will be removed from %s in 4.0. Provide a %s instead that can create the executor.',
+            self::class,
+            SqlFinalizer::class,
+        );
+
         if ($this->sqlExecutor === null) {
             throw new LogicException(sprintf(
                 'Executor not set yet. Call %s::setSqlExecutor() first.',

src/Query/SqlWalker.php

@@ -9,6 +9,7 @@ use Doctrine\DBAL\Connection;
 use Doctrine\DBAL\LockMode;
 use Doctrine\DBAL\Platforms\AbstractPlatform;
 use Doctrine\DBAL\Types\Type;
+use Doctrine\Deprecations\Deprecation;
 use Doctrine\ORM\EntityManagerInterface;
 use Doctrine\ORM\Mapping\ClassMetadata;
 use Doctrine\ORM\Mapping\QuoteStrategy;
@@ -230,6 +231,14 @@ class SqlWalker
      */
     public function getExecutor(AST\SelectStatement|AST\UpdateStatement|AST\DeleteStatement $statement): Exec\AbstractSqlExecutor
     {
+        Deprecation::trigger(
+            'doctrine/orm',
+            'https://github.com/doctrine/orm/pull/11188/',
+            'Output walkers should implement %s. That way, the %s method is no longer needed and will be removed in 4.0',
+            OutputWalker::class,
+            __METHOD__,
+        );
+
         return match (true) {
             $statement instanceof AST\UpdateStatement => $this->createUpdateStatementExecutor($statement),
             $statement instanceof AST\DeleteStatement => $this->createDeleteStatementExecutor($statement),

src/Query/TokenType.php

@@ -90,4 +90,5 @@ enum TokenType: int
     case T_WHERE    = 255;
     case T_WITH     = 256;
     case T_NAMED    = 257;
+    case T_ON       = 258;
 }

src/QueryBuilder.php

@@ -8,6 +8,7 @@ use Doctrine\Common\Collections\ArrayCollection;
 use Doctrine\Common\Collections\Criteria;
 use Doctrine\DBAL\ArrayParameterType;
 use Doctrine\DBAL\ParameterType;
+use Doctrine\Deprecations\Deprecation;
 use Doctrine\ORM\Internal\NoUnknownNamedArguments;
 use Doctrine\ORM\Query\Expr;
 use Doctrine\ORM\Query\Parameter;
@@ -116,6 +117,13 @@ class QueryBuilder implements Stringable
      */
     private int $boundCounter = 0;
 
+    /**
+     * The hints to set on the query.
+     *
+     * @var array<string, string|int|bool|iterable<mixed>|object>
+     */
+    private array $hints = [];
+
     /**
      * Initializes a new <tt>QueryBuilder</tt> that uses the given <tt>EntityManager</tt>.
      *
@@ -207,6 +215,39 @@ class QueryBuilder implements Stringable
         return $this;
     }
 
+    /** @return array<string, string|int|bool|iterable<mixed>|object> */
+    public function getHints(): array
+    {
+        return $this->hints;
+    }
+
+    /**
+     * Gets the value of a query hint. If the hint name is not recognized, FALSE is returned.
+     *
+     * @return mixed The value of the hint or FALSE, if the hint name is not recognized.
+     */
+    public function getHint(string $name): mixed
+    {
+        return $this->hints[$name] ?? false;
+    }
+
+    public function hasHint(string $name): bool
+    {
+        return isset($this->hints[$name]);
+    }
+
+    /**
+     * Adds hints for the query.
+     *
+     * @return $this
+     */
+    public function setHint(string $name, mixed $value): static
+    {
+        $this->hints[$name] = $value;
+
+        return $this;
+    }
+
     /** @phpstan-return Cache::MODE_*|null */
     public function getCacheMode(): int|null
     {
@@ -287,6 +328,10 @@ class QueryBuilder implements Stringable
             $query->setCacheRegion($this->cacheRegion);
         }
 
+        foreach ($this->hints as $name => $value) {
+            $query->setHint($name, $value);
+        }
+
         return $query;
     }
 
@@ -305,8 +350,13 @@ class QueryBuilder implements Stringable
         } else {
             // Should never happen with correct joining order. Might be
             // thoughtful to throw exception instead.
-            // @phpstan-ignore method.deprecated
-            $rootAlias = $this->getRootAlias();
+            $aliases = $this->getRootAliases();
+
+            if (! isset($aliases[0])) {
+                throw new RuntimeException('No alias was set before invoking getRootAlias().');
+            }
+
+            $rootAlias = $aliases[0];
         }
 
         $this->joinRootAliases[$alias] = $rootAlias;
@@ -541,6 +591,10 @@ class QueryBuilder implements Stringable
      */
     public function setMaxResults(int|null $maxResults): static
     {
+        if ($this->type === QueryType::Delete || $this->type === QueryType::Update) {
+            throw new RuntimeException('Setting a limit is not supported for delete or update queries.');
+        }
+
         $this->maxResults = $maxResults;
 
         return $this;
@@ -582,14 +636,25 @@ class QueryBuilder implements Stringable
             $dqlPart = reset($dqlPart);
         }
 
-        // This is introduced for backwards compatibility reasons.
-        // TODO: Remove for 3.0
         if ($dqlPartName === 'join') {
             $newDqlPart = [];
 
             foreach ($dqlPart as $k => $v) {
-                // @phpstan-ignore method.deprecated
-                $k = is_numeric($k) ? $this->getRootAlias() : $k;
+                if (is_numeric($k)) {
+                    Deprecation::trigger(
+                        'doctrine/orm',
+                        'https://github.com/doctrine/orm/pull/12051',
+                        'Using numeric keys in %s for join parts is deprecated and will not be supported in 4.0. Use an associative array with the root alias as key instead.',
+                        __METHOD__,
+                    );
+                    $aliases = $this->getRootAliases();
+
+                    if (! isset($aliases[0])) {
+                        throw new RuntimeException('No alias was set before invoking add().');
+                    }
+
+                    $k = $aliases[0];
+                }
 
                 $newDqlPart[$k] = $v;
             }

src/Tools/Console/ApplicationCompatibility.php

@@ -18,11 +18,12 @@ trait ApplicationCompatibility
 {
     private static function addCommandToApplication(Application $application, Command $command): Command|null
     {
+        // @phpstan-ignore function.alreadyNarrowedType (This method did not exist before Symfony 7.4)
         if (method_exists(Application::class, 'addCommand')) {
-            // @phpstan-ignore method.notFound (This method will be added in Symfony 7.4)
             return $application->addCommand($command);
         }
 
+        // @phpstan-ignore method.notFound
         return $application->add($command);
     }
 }

src/Tools/Console/Command/Debug/AbstractCommand.php

@@ -0,0 +1,34 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Doctrine\ORM\Tools\Console\Command\Debug;
+
+use Doctrine\ORM\EntityManagerInterface;
+use Doctrine\Persistence\ManagerRegistry;
+use Symfony\Component\Console\Command\Command;
+
+use function assert;
+
+/** @internal */
+abstract class AbstractCommand extends Command
+{
+    public function __construct(private readonly ManagerRegistry $managerRegistry)
+    {
+        parent::__construct();
+    }
+
+    final protected function getEntityManager(string $name): EntityManagerInterface
+    {
+        $manager = $this->getManagerRegistry()->getManager($name);
+
+        assert($manager instanceof EntityManagerInterface);
+
+        return $manager;
+    }
+
+    final protected function getManagerRegistry(): ManagerRegistry
+    {
+        return $this->managerRegistry;
+    }
+}

src/Tools/Console/Command/Debug/DebugEntityListenersDoctrineCommand.php

@@ -0,0 +1,162 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Doctrine\ORM\Tools\Console\Command\Debug;
+
+use Doctrine\ORM\Mapping\ClassMetadata;
+use Symfony\Component\Console\Completion\CompletionInput;
+use Symfony\Component\Console\Completion\CompletionSuggestions;
+use Symfony\Component\Console\Helper\TableSeparator;
+use Symfony\Component\Console\Input\InputArgument;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+use Symfony\Component\Console\Style\SymfonyStyle;
+
+use function array_keys;
+use function array_merge;
+use function array_unique;
+use function array_values;
+use function assert;
+use function class_exists;
+use function ksort;
+use function ltrim;
+use function sort;
+use function sprintf;
+
+final class DebugEntityListenersDoctrineCommand extends AbstractCommand
+{
+    protected function configure(): void
+    {
+        $this
+            ->setName('orm:debug:entity-listeners')
+            ->setDescription('Lists entity listeners for a given entity')
+            ->addArgument('entity', InputArgument::OPTIONAL, 'The fully-qualified entity class name')
+            ->addArgument('event', InputArgument::OPTIONAL, 'The event name to filter by (e.g. postPersist)')
+            ->setHelp(<<<'EOT'
+The <info>%command.name%</info> command lists all entity listeners for a given entity:
+
+    <info>php %command.full_name% 'App\Entity\User'</info>
+
+To show only listeners for a specific event, pass the event name:
+
+    <info>php %command.full_name% 'App\Entity\User' postPersist</info>
+EOT);
+    }
+
+    protected function execute(InputInterface $input, OutputInterface $output): int
+    {
+        $io = new SymfonyStyle($input, $output);
+
+        /** @var class-string|null $entityName */
+        $entityName = $input->getArgument('entity');
+
+        if ($entityName === null) {
+            $choices = $this->listAllEntities();
+
+            if ($choices === []) {
+                $io->error('No entities are configured.');
+
+                return self::FAILURE;
+            }
+
+            /** @var class-string $entityName */
+            $entityName = $io->choice('Which entity do you want to list listeners for?', $choices);
+        }
+
+        $entityName    = ltrim($entityName, '\\');
+        $entityManager = $this->getManagerRegistry()->getManagerForClass($entityName);
+
+        if ($entityManager === null) {
+            $io->error(sprintf('No entity manager found for class "%s".', $entityName));
+
+            return self::FAILURE;
+        }
+
+        $classMetadata = $entityManager->getClassMetadata($entityName);
+        assert($classMetadata instanceof ClassMetadata);
+
+        $eventName = $input->getArgument('event');
+
+        if ($eventName === null) {
+            $allListeners = $classMetadata->entityListeners;
+            if (! $allListeners) {
+                $io->info(sprintf('No listeners are configured for the "%s" entity.', $entityName));
+
+                return self::SUCCESS;
+            }
+
+            ksort($allListeners);
+        } else {
+            if (! isset($classMetadata->entityListeners[$eventName])) {
+                $io->info(sprintf('No listeners are configured for the "%s" event.', $eventName));
+
+                return self::SUCCESS;
+            }
+
+            $allListeners = [$eventName => $classMetadata->entityListeners[$eventName]];
+        }
+
+        $io->title(sprintf('Entity listeners for <info>%s</info>', $entityName));
+
+        $rows = [];
+        foreach ($allListeners as $event => $listeners) {
+            if ($rows) {
+                $rows[] = new TableSeparator();
+            }
+
+            foreach ($listeners as $order => $listener) {
+                $rows[] = [$order === 0 ? $event : '', sprintf('#%d', ++$order), sprintf('%s::%s()', $listener['class'], $listener['method'])];
+            }
+        }
+
+        $io->table(['Event', 'Order', 'Listener'], $rows);
+
+        return self::SUCCESS;
+    }
+
+    public function complete(CompletionInput $input, CompletionSuggestions $suggestions): void
+    {
+        if ($input->mustSuggestArgumentValuesFor('entity')) {
+            $suggestions->suggestValues($this->listAllEntities());
+
+            return;
+        }
+
+        if ($input->mustSuggestArgumentValuesFor('event')) {
+            $entityName = ltrim($input->getArgument('entity'), '\\');
+
+            if (! class_exists($entityName)) {
+                return;
+            }
+
+            $entityManager = $this->getManagerRegistry()->getManagerForClass($entityName);
+
+            if ($entityManager === null) {
+                return;
+            }
+
+            $classMetadata = $entityManager->getClassMetadata($entityName);
+            assert($classMetadata instanceof ClassMetadata);
+
+            $suggestions->suggestValues(array_keys($classMetadata->entityListeners));
+
+            return;
+        }
+    }
+
+    /** @return list<class-string> */
+    private function listAllEntities(): array
+    {
+        $entities = [];
+        foreach (array_keys($this->getManagerRegistry()->getManagerNames()) as $managerName) {
+            $entities[] = $this->getEntityManager($managerName)->getConfiguration()->getMetadataDriverImpl()->getAllClassNames();
+        }
+
+        $entities = array_values(array_unique(array_merge(...$entities)));
+
+        sort($entities);
+
+        return $entities;
+    }
+}

src/Tools/Console/Command/Debug/DebugEventManagerDoctrineCommand.php

@@ -0,0 +1,111 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Doctrine\ORM\Tools\Console\Command\Debug;
+
+use Symfony\Component\Console\Completion\CompletionInput;
+use Symfony\Component\Console\Completion\CompletionSuggestions;
+use Symfony\Component\Console\Helper\TableSeparator;
+use Symfony\Component\Console\Input\InputArgument;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Input\InputOption;
+use Symfony\Component\Console\Output\OutputInterface;
+use Symfony\Component\Console\Style\SymfonyStyle;
+
+use function array_keys;
+use function array_values;
+use function ksort;
+use function method_exists;
+use function sprintf;
+
+final class DebugEventManagerDoctrineCommand extends AbstractCommand
+{
+    protected function configure(): void
+    {
+        $this
+            ->setName('orm:debug:event-manager')
+            ->setDescription('Lists event listeners for an entity manager')
+            ->addArgument('event', InputArgument::OPTIONAL, 'The event name to filter by (e.g. postPersist)')
+            ->addOption('em', null, InputOption::VALUE_REQUIRED, 'The entity manager to use for this command')
+            ->setHelp(<<<'EOT'
+The <info>%command.name%</info> command lists all event listeners for the default entity manager:
+
+    <info>php %command.full_name%</info>
+
+You can also specify an entity manager:
+
+    <info>php %command.full_name% --em=default</info>
+
+To show only listeners for a specific event, pass the event name as an argument:
+
+    <info>php %command.full_name% postPersist</info>
+EOT);
+    }
+
+    protected function execute(InputInterface $input, OutputInterface $output): int
+    {
+        $io = new SymfonyStyle($input, $output);
+
+        $entityManagerName = $input->getOption('em') ?: $this->getManagerRegistry()->getDefaultManagerName();
+        $eventManager      = $this->getEntityManager($entityManagerName)->getEventManager();
+
+        $eventName = $input->getArgument('event');
+
+        if ($eventName === null) {
+            $allListeners = $eventManager->getAllListeners();
+            if (! $allListeners) {
+                $io->info(sprintf('No listeners are configured for the "%s" entity manager.', $entityManagerName));
+
+                return self::SUCCESS;
+            }
+
+            ksort($allListeners);
+        } else {
+            $listeners = $eventManager->hasListeners($eventName) ? $eventManager->getListeners($eventName) : [];
+            if (! $listeners) {
+                $io->info(sprintf('No listeners are configured for the "%s" event.', $eventName));
+
+                return self::SUCCESS;
+            }
+
+            $allListeners = [$eventName => $listeners];
+        }
+
+        $io->title(sprintf('Event listeners for <info>%s</info> entity manager', $entityManagerName));
+
+        $rows = [];
+        foreach ($allListeners as $event => $listeners) {
+            if ($rows) {
+                $rows[] = new TableSeparator();
+            }
+
+            foreach (array_values($listeners) as $order => $listener) {
+                $method = method_exists($listener, '__invoke') ? '__invoke' : $event;
+                $rows[] = [$order === 0 ? $event : '', sprintf('#%d', ++$order), sprintf('%s::%s()', $listener::class, $method)];
+            }
+        }
+
+        $io->table(['Event', 'Order', 'Listener'], $rows);
+
+        return self::SUCCESS;
+    }
+
+    public function complete(CompletionInput $input, CompletionSuggestions $suggestions): void
+    {
+        if ($input->mustSuggestArgumentValuesFor('event')) {
+            $entityManagerName = $input->getOption('em') ?: $this->getManagerRegistry()->getDefaultManagerName();
+            $eventManager      = $this->getEntityManager($entityManagerName)->getEventManager();
+
+            $suggestions->suggestValues(array_keys($eventManager->getAllListeners()));
+
+            return;
+        }
+
+        if ($input->mustSuggestOptionValuesFor('em')) {
+            $suggestions->suggestValues(array_keys($this->getManagerRegistry()->getManagerNames()));
+
+            return;
+        }
+    }
+}

src/Tools/Console/Command/MappingDescribeCommand.php

@@ -10,6 +10,7 @@ use Doctrine\ORM\Mapping\ClassMetadata;
 use Doctrine\ORM\Mapping\FieldMapping;
 use Doctrine\Persistence\Mapping\MappingException;
 use InvalidArgumentException;
+use JsonException;
 use Symfony\Component\Console\Completion\CompletionInput;
 use Symfony\Component\Console\Completion\CompletionSuggestions;
 use Symfony\Component\Console\Input\InputArgument;
@@ -52,9 +53,17 @@ final class MappingDescribeCommand extends AbstractEntityManagerCommand
     protected function configure(): void
     {
         $this->setName('orm:mapping:describe')
-             ->addArgument('entityName', InputArgument::REQUIRED, 'Full or partial name of entity')
-             ->setDescription('Display information about mapped objects')
-             ->addOption('em', null, InputOption::VALUE_REQUIRED, 'Name of the entity manager to operate on')
+            ->addArgument('entityName', InputArgument::REQUIRED, 'Full or partial name of entity')
+            ->setDescription('Display information about mapped objects')
+            ->addOption('em', null, InputOption::VALUE_REQUIRED, 'Name of the entity manager to operate on')
+            ->addOption(
+                'format',
+                null,
+                InputOption::VALUE_REQUIRED,
+                'Output format (text, json)',
+                MappingDescribeCommandFormat::TEXT->value,
+                array_map(static fn (MappingDescribeCommandFormat $format) => $format->value, MappingDescribeCommandFormat::cases()),
+            )
              ->setHelp(<<<'EOT'
 The %command.full_name% command describes the metadata for the given full or partial entity class name.
 
@@ -63,6 +72,13 @@ The %command.full_name% command describes the metadata for the given full or par
 Or:
 
     <info>%command.full_name%</info> MyEntity
+    
+To output the metadata in JSON format, use the <info>--format</info> option:
+  <info>%command.full_name% My\Namespace\Entity\MyEntity --format=json</info>
+
+To use a specific entity manager (e.g., for multi-DB projects), use the <info>--em</info> option:
+  <info>%command.full_name% My\Namespace\Entity\MyEntity --em=my_custom_entity_manager</info>
+
 EOT);
     }
 
@@ -70,9 +86,11 @@ EOT);
     {
         $ui = new SymfonyStyle($input, $output);
 
+        $format = MappingDescribeCommandFormat::from($input->getOption('format'));
+
         $entityManager = $this->getEntityManager($input);
 
-        $this->displayEntity($input->getArgument('entityName'), $entityManager, $ui);
+        $this->displayEntity($input->getArgument('entityName'), $entityManager, $ui, $format);
 
         return 0;
     }
@@ -89,6 +107,10 @@ EOT);
 
             $suggestions->suggestValues(array_values($entities));
         }
+
+        if ($input->mustSuggestOptionValuesFor('format')) {
+            $suggestions->suggestValues(array_map(static fn (MappingDescribeCommandFormat $format) => $format->value, MappingDescribeCommandFormat::cases()));
+        }
     }
 
     /**
@@ -100,9 +122,47 @@ EOT);
         string $entityName,
         EntityManagerInterface $entityManager,
         SymfonyStyle $ui,
+        MappingDescribeCommandFormat $format,
     ): void {
         $metadata = $this->getClassMetadata($entityName, $entityManager);
 
+        if ($format === MappingDescribeCommandFormat::JSON) {
+            $ui->text(json_encode(
+                [
+                    'name' => $metadata->name,
+                    'rootEntityName' => $metadata->rootEntityName,
+                    'customGeneratorDefinition' => $this->formatValueAsJson($metadata->customGeneratorDefinition),
+                    'customRepositoryClassName' => $metadata->customRepositoryClassName,
+                    'isMappedSuperclass' => $metadata->isMappedSuperclass,
+                    'isEmbeddedClass' => $metadata->isEmbeddedClass,
+                    'parentClasses' => $metadata->parentClasses,
+                    'subClasses' => $metadata->subClasses,
+                    'embeddedClasses' => $metadata->embeddedClasses,
+                    'identifier' => $metadata->identifier,
+                    'inheritanceType' => $metadata->inheritanceType,
+                    'discriminatorColumn' => $this->formatValueAsJson($metadata->discriminatorColumn),
+                    'discriminatorValue' => $metadata->discriminatorValue,
+                    'discriminatorMap' => $metadata->discriminatorMap,
+                    'generatorType' => $metadata->generatorType,
+                    'table' => $this->formatValueAsJson($metadata->table),
+                    'isIdentifierComposite' => $metadata->isIdentifierComposite,
+                    'containsForeignIdentifier' => $metadata->containsForeignIdentifier,
+                    'containsEnumIdentifier' => $metadata->containsEnumIdentifier,
+                    'sequenceGeneratorDefinition' => $this->formatValueAsJson($metadata->sequenceGeneratorDefinition),
+                    'changeTrackingPolicy' => $metadata->changeTrackingPolicy,
+                    'isVersioned' => $metadata->isVersioned,
+                    'versionField' => $metadata->versionField,
+                    'isReadOnly' => $metadata->isReadOnly,
+                    'entityListeners' => $metadata->entityListeners,
+                    'associationMappings' => $this->formatMappingsAsJson($metadata->associationMappings),
+                    'fieldMappings' => $this->formatMappingsAsJson($metadata->fieldMappings),
+                ],
+                JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES | JSON_PRETTY_PRINT | JSON_THROW_ON_ERROR,
+            ));
+
+            return;
+        }
+
         $ui->table(
             ['Field', 'Value'],
             array_merge(
@@ -240,6 +300,22 @@ EOT);
         throw new InvalidArgumentException(sprintf('Do not know how to format value "%s"', print_r($value, true)));
     }
 
+    /** @throws JsonException */
+    private function formatValueAsJson(mixed $value): mixed
+    {
+        if (is_object($value)) {
+            $value = (array) $value;
+        }
+
+        if (is_array($value)) {
+            foreach ($value as $k => $v) {
+                $value[$k] = $this->formatValueAsJson($v);
+            }
+        }
+
+        return $value;
+    }
+
     /**
      * Add the given label and value to the two column table output
      *
@@ -281,6 +357,22 @@ EOT);
         return $output;
     }
 
+    /**
+     * @param array<string, FieldMapping|AssociationMapping> $propertyMappings
+     *
+     * @return array<string, mixed>
+     */
+    private function formatMappingsAsJson(array $propertyMappings): array
+    {
+        $output = [];
+
+        foreach ($propertyMappings as $propertyName => $mapping) {
+            $output[$propertyName] = $this->formatValueAsJson((array) $mapping);
+        }
+
+        return $output;
+    }
+
     /**
      * Format the entity listeners
      *

src/Tools/Console/Command/MappingDescribeCommandFormat.php

@@ -0,0 +1,11 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Doctrine\ORM\Tools\Console\Command;
+
+enum MappingDescribeCommandFormat: string
+{
+    case TEXT = 'text';
+    case JSON = 'json';
+}

src/Tools/SchemaTool.php

@@ -9,6 +9,10 @@ use Doctrine\DBAL\Platforms\AbstractPlatform;
 use Doctrine\DBAL\Schema\AbstractAsset;
 use Doctrine\DBAL\Schema\AbstractSchemaManager;
 use Doctrine\DBAL\Schema\ComparatorConfig;
+use Doctrine\DBAL\Schema\DefaultExpression;
+use Doctrine\DBAL\Schema\DefaultExpression\CurrentDate;
+use Doctrine\DBAL\Schema\DefaultExpression\CurrentTime;
+use Doctrine\DBAL\Schema\DefaultExpression\CurrentTimestamp;
 use Doctrine\DBAL\Schema\ForeignKeyConstraintEditor;
 use Doctrine\DBAL\Schema\Index;
 use Doctrine\DBAL\Schema\Index\IndexedColumn;
@@ -18,6 +22,8 @@ use Doctrine\DBAL\Schema\NamedObject;
 use Doctrine\DBAL\Schema\PrimaryKeyConstraint;
 use Doctrine\DBAL\Schema\Schema;
 use Doctrine\DBAL\Schema\Table;
+use Doctrine\DBAL\Types\Types;
+use Doctrine\Deprecations\Deprecation;
 use Doctrine\ORM\EntityManagerInterface;
 use Doctrine\ORM\Mapping\AssociationMapping;
 use Doctrine\ORM\Mapping\ClassMetadata;
@@ -46,6 +52,7 @@ use function count;
 use function current;
 use function implode;
 use function in_array;
+use function interface_exists;
 use function is_numeric;
 use function method_exists;
 use function preg_match;
@@ -478,7 +485,9 @@ class SchemaTool
             $options['scale'] = $mapping->scale;
         }
 
+        /** @phpstan-ignore property.deprecated */
         if (isset($mapping->default)) {
+            /** @phpstan-ignore property.deprecated */
             $options['default'] = $mapping->default;
         }
 
@@ -489,6 +498,64 @@ class SchemaTool
         // the 'default' option can be overwritten here
         $options = $this->gatherColumnOptions($mapping) + $options;
 
+        if (isset($options['default']) && interface_exists(DefaultExpression::class)) {
+            if (
+                in_array($mapping->type, [
+                    Types::DATETIME_MUTABLE,
+                    Types::DATETIME_IMMUTABLE,
+                    Types::DATETIMETZ_MUTABLE,
+                    Types::DATETIMETZ_IMMUTABLE,
+                ], true)
+                && $options['default'] === $this->platform->getCurrentTimestampSQL()
+            ) {
+                Deprecation::trigger(
+                    'doctrine/orm',
+                    'https://github.com/doctrine/orm/issues/12252',
+                    <<<'DEPRECATION'
+                    Using "%s" as a default value for datetime fields is deprecated and
+                    will not be supported in Doctrine ORM 4.0.
+                    Pass a `Doctrine\DBAL\Schema\DefaultExpression\CurrentTimestamp` instance instead.
+                    DEPRECATION,
+                    $this->platform->getCurrentTimestampSQL(),
+                );
+                $options['default'] = new CurrentTimestamp();
+            }
+
+            if (
+                in_array($mapping->type, [Types::TIME_MUTABLE, Types::TIME_IMMUTABLE], true)
+                && $options['default'] === $this->platform->getCurrentTimeSQL()
+            ) {
+                Deprecation::trigger(
+                    'doctrine/orm',
+                    'https://github.com/doctrine/orm/issues/12252',
+                    <<<'DEPRECATION'
+                    Using "%s" as a default value for time fields is deprecated and
+                    will not be supported in Doctrine ORM 4.0.
+                    Pass a `Doctrine\DBAL\Schema\DefaultExpression\CurrentTime` instance instead.
+                    DEPRECATION,
+                    $this->platform->getCurrentTimeSQL(),
+                );
+                $options['default'] = new CurrentTime();
+            }
+
+            if (
+                in_array($mapping->type, [Types::DATE_MUTABLE, Types::DATE_IMMUTABLE], true)
+                && $options['default'] === $this->platform->getCurrentDateSQL()
+            ) {
+                Deprecation::trigger(
+                    'doctrine/orm',
+                    'https://github.com/doctrine/orm/issues/12252',
+                    <<<'DEPRECATION'
+                    Using "%s" as a default value for date fields is deprecated and
+                    will not be supported in Doctrine ORM 4.0.
+                    Pass a `Doctrine\DBAL\Schema\DefaultExpression\CurrentDate` instance instead.
+                    DEPRECATION,
+                    $this->platform->getCurrentDateSQL(),
+                );
+                $options['default'] = new CurrentDate();
+            }
+        }
+
         if ($class->isIdGeneratorIdentity() && $class->getIdentifierFieldNames() === [$mapping->fieldName]) {
             $options['autoincrement'] = true;
         }
@@ -1009,7 +1076,7 @@ class SchemaTool
     {
         return $asset instanceof NamedObject
             ? $asset->getObjectName()->toString()
-            // DBAL < 4.4
+            // @phpstan-ignore method.deprecated (DBAL < 4.4)
             : $asset->getName();
     }
 }

src/UnitOfWork.php

@@ -62,6 +62,7 @@ use function array_map;
 use function array_sum;
 use function array_values;
 use function assert;
+use function count;
 use function current;
 use function get_debug_type;
 use function implode;
@@ -2594,8 +2595,14 @@ class UnitOfWork implements PropertyChangedListener
                     $reflField->setValue($entity, $pColl);
 
                     if ($hints['fetchMode'][$class->name][$field] === ClassMetadata::FETCH_EAGER) {
-                        $isIteration = isset($hints[Query::HINT_INTERNAL_ITERATION]) && $hints[Query::HINT_INTERNAL_ITERATION];
-                        if (! $isIteration && $assoc->isOneToMany() && ! $targetClass->isIdentifierComposite && ! $assoc->isIndexed()) {
+                        if (
+                            $assoc->isOneToMany()
+                            // is iteration
+                            && ! (isset($hints[Query::HINT_INTERNAL_ITERATION]) && $hints[Query::HINT_INTERNAL_ITERATION])
+                            // is foreign key composite
+                            && ! ($targetClass->hasAssociation($assoc->mappedBy) && count($targetClass->getAssociationMapping($assoc->mappedBy)->joinColumns) > 1)
+                            && ! $assoc->isIndexed()
+                        ) {
                             $this->scheduleCollectionForBatchLoading($pColl, $class);
                         } else {
                             $this->loadCollection($pColl);

tests/Performance/EntityManagerFactory.php

@@ -13,14 +13,13 @@ use Doctrine\DBAL\Result;
 use Doctrine\ORM\Configuration;
 use Doctrine\ORM\EntityManager;
 use Doctrine\ORM\EntityManagerInterface;
-use Doctrine\ORM\Mapping\Driver\AttributeDriver;
 use Doctrine\ORM\Proxy\ProxyFactory;
 use Doctrine\ORM\Tools\SchemaTool;
 use Doctrine\Tests\Mocks\ArrayResultFactory;
+use Doctrine\Tests\Mocks\AttributeDriverFactory;
 use Doctrine\Tests\TestUtil;
 
 use function array_map;
-use function realpath;
 
 final class EntityManagerFactory
 {
@@ -30,9 +29,9 @@ final class EntityManagerFactory
 
         TestUtil::configureProxies($config);
         $config->setAutoGenerateProxyClasses(ProxyFactory::AUTOGENERATE_EVAL);
-        $config->setMetadataDriverImpl(new AttributeDriver([
-            realpath(__DIR__ . '/Models/Cache'),
-            realpath(__DIR__ . '/Models/GeoNames'),
+        $config->setMetadataDriverImpl(AttributeDriverFactory::createAttributeDriver([
+            __DIR__ . '/../Tests/Models/Cache',
+            __DIR__ . '/../Tests/Models/GeoNames',
         ]));
 
         $entityManager = new EntityManager(
@@ -55,10 +54,10 @@ final class EntityManagerFactory
 
         TestUtil::configureProxies($config);
         $config->setAutoGenerateProxyClasses(ProxyFactory::AUTOGENERATE_EVAL);
-        $config->setMetadataDriverImpl(new AttributeDriver([
-            realpath(__DIR__ . '/Models/Cache'),
-            realpath(__DIR__ . '/Models/Generic'),
-            realpath(__DIR__ . '/Models/GeoNames'),
+        $config->setMetadataDriverImpl(AttributeDriverFactory::createAttributeDriver([
+            __DIR__ . '/../Tests/Models/Cache',
+            __DIR__ . '/../Tests/Models/Generic',
+            __DIR__ . '/../Tests/Models/GeoNames',
         ]));
 
         // A connection that doesn't really do anything

tests/Tests/Mocks/AttributeDriverFactory.php

@@ -0,0 +1,34 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Doctrine\Tests\Mocks;
+
+use Doctrine\ORM\Mapping\Driver\AttributeDriver;
+use Doctrine\Persistence\Mapping\Driver\ClassLocator;
+use Doctrine\Persistence\Mapping\Driver\FileClassLocator;
+
+use function interface_exists;
+
+final class AttributeDriverFactory
+{
+    /** @param list<string> $paths */
+    public static function createAttributeDriver(array $paths = []): AttributeDriver
+    {
+        if (! self::isClassLocatorSupported()) {
+            // Persistence < 4.1
+            return new AttributeDriver($paths);
+        }
+
+        // Persistence >= 4.1
+        $classLocator = FileClassLocator::createFromDirectories($paths);
+
+        return new AttributeDriver($classLocator);
+    }
+
+    /** Supported since doctrine/persistence >= 4.1 */
+    public static function isClassLocatorSupported(): bool
+    {
+        return interface_exists(ClassLocator::class);
+    }
+}

tests/Tests/Mocks/EntityManagerMock.php

@@ -8,7 +8,6 @@ use Doctrine\Common\EventManager;
 use Doctrine\DBAL\Connection;
 use Doctrine\ORM\Configuration;
 use Doctrine\ORM\EntityManager;
-use Doctrine\ORM\Mapping\Driver\AttributeDriver;
 use Doctrine\ORM\Proxy\ProxyFactory;
 use Doctrine\ORM\UnitOfWork;
 use Doctrine\Tests\TestUtil;
@@ -26,7 +25,7 @@ class EntityManagerMock extends EntityManager
         if ($config === null) {
             $config = new Configuration();
             TestUtil::configureProxies($config);
-            $config->setMetadataDriverImpl(new AttributeDriver([]));
+            $config->setMetadataDriverImpl(AttributeDriverFactory::createAttributeDriver());
         }
 
         parent::__construct($conn, $config, $eventManager);

tests/Tests/Models/DDC3579/DDC3579Admin.php

@@ -6,13 +6,14 @@ namespace Doctrine\Tests\Models\DDC3579;
 
 use Doctrine\ORM\Mapping\AssociationOverride;
 use Doctrine\ORM\Mapping\AssociationOverrides;
+use Doctrine\ORM\Mapping\ClassMetadata;
 use Doctrine\ORM\Mapping\Entity;
 
 #[Entity]
 #[AssociationOverrides([new AssociationOverride(name: 'groups', inversedBy: 'admins')])]
 class DDC3579Admin extends DDC3579User
 {
-    public static function loadMetadata($metadata): void
+    public static function loadMetadata(ClassMetadata $metadata): void
     {
         $metadata->setAssociationOverride('groups', ['inversedBy' => 'admins']);
     }

tests/Tests/Models/DDC3579/DDC3579User.php

@@ -58,7 +58,7 @@ class DDC3579User
         return $this->groups;
     }
 
-    public static function loadMetadata($metadata): void
+    public static function loadMetadata(ClassMetadata $metadata): void
     {
         $metadata->isMappedSuperclass = true;
 

tests/Tests/Models/EagerFetchedCompositeOneToMany/RootEntity.php

@@ -24,11 +24,16 @@ class RootEntity
     #[ORM\OneToMany(mappedBy: 'root', targetEntity: SecondLevel::class, fetch: 'EAGER')]
     private Collection $secondLevel;
 
+    /** @var Collection<int, SecondLevelWithoutCompositePrimaryKey> */
+    #[ORM\OneToMany(mappedBy: 'root', targetEntity: SecondLevelWithoutCompositePrimaryKey::class, fetch: 'EAGER')]
+    private Collection $anotherSecondLevel;
+
     public function __construct(int $id, string $other)
     {
-        $this->otherKey    = $other;
-        $this->secondLevel = new ArrayCollection();
-        $this->id          = $id;
+        $this->otherKey           = $other;
+        $this->secondLevel        = new ArrayCollection();
+        $this->anotherSecondLevel = new ArrayCollection();
+        $this->id                 = $id;
     }
 
     public function getId(): int|null

tests/Tests/Models/EagerFetchedCompositeOneToMany/SecondLevelWithoutCompositePrimaryKey.php

@@ -0,0 +1,31 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Doctrine\Tests\Models\EagerFetchedCompositeOneToMany;
+
+use Doctrine\ORM\Mapping as ORM;
+
+#[ORM\Entity]
+class SecondLevelWithoutCompositePrimaryKey
+{
+    #[ORM\Id]
+    #[ORM\GeneratedValue]
+    #[ORM\Column(type: 'integer', nullable: false)]
+    private int|null $id;
+
+    #[ORM\ManyToOne(targetEntity: RootEntity::class, inversedBy: 'anotherSecondLevel')]
+    #[ORM\JoinColumn(name: 'root_id', referencedColumnName: 'id')]
+    #[ORM\JoinColumn(name: 'root_other_key', referencedColumnName: 'other_key')]
+    private RootEntity $root;
+
+    public function __construct(RootEntity $upper)
+    {
+        $this->root = $upper;
+    }
+
+    public function getId(): int|null
+    {
+        return $this->id;
+    }
+}

tests/Tests/Models/GH10334/GH10334Foo.php

@@ -16,7 +16,7 @@ class GH10334Foo
 {
     #[Id]
     #[ManyToOne(targetEntity: GH10334FooCollection::class, inversedBy: 'foos')]
-    #[JoinColumn(name: 'foo_collection_id', referencedColumnName: 'id', nullable: false)]
+    #[JoinColumn(name: 'foo_collection_id', referencedColumnName: 'id')]
     #[GeneratedValue]
     protected GH10334FooCollection $collection;
 

tests/Tests/Models/OneToOneInverseSideWithAssociativeIdLoad/InverseSide.php

@@ -17,7 +17,7 @@ class InverseSide
     /** Associative id (owning identifier) */
     #[Id]
     #[OneToOne(targetEntity: InverseSideIdTarget::class, inversedBy: 'inverseSide')]
-    #[JoinColumn(nullable: false, name: 'associativeId')]
+    #[JoinColumn(name: 'associativeId')]
     public InverseSideIdTarget $associativeId;
 
     #[OneToOne(targetEntity: OwningSide::class, mappedBy: 'inverse')]

tests/Tests/ORM/Functional/DefaultTimeExpressionTest.php

@@ -0,0 +1,192 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Doctrine\Tests\ORM\Functional;
+
+use DateTime;
+use DateTimeImmutable;
+use Doctrine\DBAL\Platforms\AbstractMySQLPlatform;
+use Doctrine\DBAL\Schema\DefaultExpression;
+use Doctrine\DBAL\Schema\DefaultExpression\CurrentDate;
+use Doctrine\DBAL\Schema\DefaultExpression\CurrentTime;
+use Doctrine\DBAL\Schema\DefaultExpression\CurrentTimestamp;
+use Doctrine\DBAL\Types\Types;
+use Doctrine\Deprecations\PHPUnit\VerifyDeprecations;
+use Doctrine\ORM\Mapping as ORM;
+use Doctrine\Tests\OrmFunctionalTestCase;
+use PHPUnit\Framework\Attributes\IgnoreDeprecations;
+use PHPUnit\Framework\Attributes\RequiresMethod;
+
+use function interface_exists;
+
+class DefaultTimeExpressionTest extends OrmFunctionalTestCase
+{
+    use VerifyDeprecations;
+
+    #[IgnoreDeprecations]
+    #[RequiresMethod(DefaultExpression::class, 'toSQL')]
+    public function testUsingTimeRelatedDefaultExpressionCausesAnOrmDeprecationAndNoDbalDeprecation(): void
+    {
+        $platform = $this->_em->getConnection()->getDatabasePlatform();
+
+        if (
+            $platform->getCurrentTimestampSQL() !== 'CURRENT_TIMESTAMP'
+            || $platform->getCurrentTimeSQL() !== 'CURRENT_TIME'
+            || $platform->getCurrentDateSQL() !== 'CURRENT_DATE'
+        ) {
+            $this->markTestSkipped(
+                'This test requires platforms to support exactly CURRENT_TIMESTAMP, CURRENT_TIME and CURRENT_DATE.',
+            );
+        }
+
+        if ($platform instanceof AbstractMySQLPlatform) {
+            $this->markTestSkipped(
+                'MySQL platform does not support CURRENT_TIME or CURRENT_DATE as default expression.',
+            );
+        }
+
+        $this->expectDeprecationWithIdentifier('https://github.com/doctrine/orm/issues/12252');
+        $this->expectNoDeprecationWithIdentifier('https://github.com/doctrine/dbal/pull/7195');
+
+        $this->createSchemaForModels(LegacyTimeEntity::class);
+        $this->_em->persist($entity = new LegacyTimeEntity());
+        $this->_em->flush();
+        $this->_em->find(LegacyTimeEntity::class, $entity->id);
+    }
+
+    public function testNoDeprecationsAreTrownWhenTheyCannotBeAddressed(): void
+    {
+        if (interface_exists(DefaultExpression::class)) {
+            $this->markTestSkipped(
+                'This test requires Doctrine DBAL 4.3 or lower.',
+            );
+        }
+
+        $platform = $this->_em->getConnection()->getDatabasePlatform();
+
+        if (
+            $platform->getCurrentTimestampSQL() !== 'CURRENT_TIMESTAMP'
+            || $platform->getCurrentTimeSQL() !== 'CURRENT_TIME'
+            || $platform->getCurrentDateSQL() !== 'CURRENT_DATE'
+        ) {
+            $this->markTestSkipped(
+                'This test requires platforms to support exactly CURRENT_TIMESTAMP, CURRENT_TIME and CURRENT_DATE.',
+            );
+        }
+
+        if ($platform instanceof AbstractMySQLPlatform) {
+            $this->markTestSkipped(
+                'MySQL platform does not support CURRENT_TIME or CURRENT_DATE as default expression.',
+            );
+        }
+
+        $this->expectNoDeprecationWithIdentifier('https://github.com/doctrine/orm/issues/12252');
+        $this->expectNoDeprecationWithIdentifier('https://github.com/doctrine/dbal/pull/7195');
+
+        $this->createSchemaForModels(LegacyTimeEntity::class);
+        $this->_em->persist($entity = new LegacyTimeEntity());
+        $this->_em->flush();
+        $this->_em->find(LegacyTimeEntity::class, $entity->id);
+    }
+
+    #[RequiresMethod(DefaultExpression::class, 'toSQL')]
+    public function testUsingDefaultExpressionInstancesCausesNoDeprecation(): void
+    {
+        $platform = $this->_em->getConnection()->getDatabasePlatform();
+
+        if ($platform instanceof AbstractMySQLPlatform) {
+            $this->markTestSkipped('MySQL platform does not support CURRENT_TIME or CURRENT_DATE as default expression.');
+        }
+
+        $this->expectNoDeprecationWithIdentifier('https://github.com/doctrine/orm/issues/12252');
+        $this->expectNoDeprecationWithIdentifier('https://github.com/doctrine/dbal/pull/7195');
+
+        $this->createSchemaForModels(TimeEntity::class);
+        $this->_em->persist($entity = new TimeEntity());
+        $this->_em->flush();
+        $this->_em->find(TimeEntity::class, $entity->id);
+    }
+}
+
+#[ORM\Entity]
+class LegacyTimeEntity
+{
+    #[ORM\Id]
+    #[ORM\Column]
+    #[ORM\GeneratedValue]
+    public int $id;
+
+    #[ORM\Column(
+        type: Types::DATETIME_MUTABLE,
+        options: ['default' => 'CURRENT_TIMESTAMP'],
+        insertable: false,
+        updatable: false,
+    )]
+    public DateTime $createdAt;
+
+    #[ORM\Column(
+        type: Types::DATETIME_IMMUTABLE,
+        options: ['default' => 'CURRENT_TIMESTAMP'],
+        insertable: false,
+        updatable: false,
+    )]
+    public DateTimeImmutable $createdAtImmutable;
+
+    #[ORM\Column(
+        type: Types::TIME_MUTABLE,
+        options: ['default' => 'CURRENT_TIME'],
+        insertable: false,
+        updatable: false,
+    )]
+    public DateTime $createdTime;
+
+    #[ORM\Column(
+        type: Types::DATE_MUTABLE,
+        options: ['default' => 'CURRENT_DATE'],
+        insertable: false,
+        updatable: false,
+    )]
+    public DateTime $createdDate;
+}
+
+#[ORM\Entity]
+class TimeEntity
+{
+    #[ORM\Id]
+    #[ORM\Column]
+    #[ORM\GeneratedValue]
+    public int $id;
+
+    #[ORM\Column(
+        type: Types::DATETIME_MUTABLE,
+        options: ['default' => new CurrentTimestamp()],
+        insertable: false,
+        updatable: false,
+    )]
+    public DateTime $createdAt;
+
+    #[ORM\Column(
+        type: Types::DATETIME_IMMUTABLE,
+        options: ['default' => new CurrentTimestamp()],
+        insertable: false,
+        updatable: false,
+    )]
+    public DateTimeImmutable $createdAtImmutable;
+
+    #[ORM\Column(
+        type: Types::TIME_MUTABLE,
+        options: ['default' => new CurrentTime()],
+        insertable: false,
+        updatable: false,
+    )]
+    public DateTime $createdTime;
+
+    #[ORM\Column(
+        type: Types::DATE_MUTABLE,
+        options: ['default' => new CurrentDate()],
+        insertable: false,
+        updatable: false,
+    )]
+    public DateTime $createdDate;
+}

tests/Tests/ORM/Functional/DefaultTimeExpressionXmlTest.php

@@ -0,0 +1,101 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Doctrine\Tests\ORM\Functional;
+
+use DateTime;
+use DateTimeImmutable;
+use Doctrine\DBAL\Platforms\AbstractMySQLPlatform;
+use Doctrine\DBAL\Schema\DefaultExpression;
+use Doctrine\Deprecations\PHPUnit\VerifyDeprecations;
+use Doctrine\ORM\Mapping\Driver\XmlDriver;
+use Doctrine\ORM\Tools\SchemaTool;
+use Doctrine\Tests\OrmFunctionalTestCase;
+use PHPUnit\Framework\Attributes\IgnoreDeprecations;
+use PHPUnit\Framework\Attributes\RequiresMethod;
+
+class DefaultTimeExpressionXmlTest extends OrmFunctionalTestCase
+{
+    use VerifyDeprecations;
+
+    #[IgnoreDeprecations]
+    #[RequiresMethod(DefaultExpression::class, 'toSQL')]
+    public function testUsingTimeRelatedDefaultExpressionCausesAnOrmDeprecationAndNoDbalDeprecation(): void
+    {
+        $platform = $this->_em->getConnection()->getDatabasePlatform();
+
+        if (
+            $platform->getCurrentTimestampSQL() !== 'CURRENT_TIMESTAMP'
+            || $platform->getCurrentTimeSQL() !== 'CURRENT_TIME'
+            || $platform->getCurrentDateSQL() !== 'CURRENT_DATE'
+        ) {
+            $this->markTestSkipped('Platform does not use standard SQL for current time expressions.');
+        }
+
+        if ($platform instanceof AbstractMySQLPlatform) {
+            $this->markTestSkipped(
+                'MySQL platform does not support CURRENT_TIME or CURRENT_DATE as default expression.',
+            );
+        }
+
+        $this->_em         = $this->getEntityManager(
+            mappingDriver: new XmlDriver(__DIR__ . '/../Mapping/xml/'),
+        );
+        $this->_schemaTool = new SchemaTool($this->_em);
+
+        $this->expectDeprecationWithIdentifier('https://github.com/doctrine/orm/issues/12252');
+        $this->expectNoDeprecationWithIdentifier('https://github.com/doctrine/dbal/pull/7195');
+
+        $this->createSchemaForModels(XmlLegacyTimeEntity::class);
+        $this->_em->persist($entity = new XmlLegacyTimeEntity());
+        $this->_em->flush();
+        $this->_em->find(XmlLegacyTimeEntity::class, $entity->id);
+    }
+
+    #[RequiresMethod(DefaultExpression::class, 'toSQL')]
+    public function testUsingDefaultExpressionInstancesCausesNoDeprecationXmlDriver(): void
+    {
+        $platform = $this->_em->getConnection()->getDatabasePlatform();
+
+        if ($platform instanceof AbstractMySQLPlatform) {
+            $this->markTestSkipped(
+                'MySQL platform does not support CURRENT_TIME or CURRENT_DATE as default expression.',
+            );
+        }
+
+        $this->_em         = $this->getEntityManager(
+            mappingDriver: new XmlDriver(__DIR__ . '/../Mapping/xml/'),
+        );
+        $this->_schemaTool = new SchemaTool($this->_em);
+
+        $this->expectNoDeprecationWithIdentifier('https://github.com/doctrine/orm/issues/12252');
+        $this->expectNoDeprecationWithIdentifier('https://github.com/doctrine/dbal/pull/7195');
+
+        $this->createSchemaForModels(XmlTimeEntity::class);
+        $this->_em->persist($entity = new XmlTimeEntity());
+        $this->_em->flush();
+        $this->_em->clear();
+        $this->_em->find(XmlTimeEntity::class, $entity->id);
+    }
+}
+
+class XmlLegacyTimeEntity
+{
+    public int $id;
+
+    public DateTime $createdAt;
+    public DateTimeImmutable $createdAtImmutable;
+    public DateTime $createdTime;
+    public DateTime $createdDate;
+}
+
+class XmlTimeEntity
+{
+    public int $id;
+
+    public DateTime $createdAt;
+    public DateTimeImmutable $createdAtImmutable;
+    public DateTime $createdTime;
+    public DateTime $createdDate;
+}

tests/Tests/ORM/Functional/EagerFetchOneToManyWithCompositeKeyTest.php

@@ -6,6 +6,7 @@ namespace Doctrine\Tests\ORM\Functional;
 
 use Doctrine\Tests\Models\EagerFetchedCompositeOneToMany\RootEntity;
 use Doctrine\Tests\Models\EagerFetchedCompositeOneToMany\SecondLevel;
+use Doctrine\Tests\Models\EagerFetchedCompositeOneToMany\SecondLevelWithoutCompositePrimaryKey;
 use Doctrine\Tests\OrmFunctionalTestCase;
 use PHPUnit\Framework\Attributes\Group;
 
@@ -14,7 +15,7 @@ final class EagerFetchOneToManyWithCompositeKeyTest extends OrmFunctionalTestCas
     #[Group('GH11154')]
     public function testItDoesNotThrowAnExceptionWhenTriggeringALoad(): void
     {
-        $this->setUpEntitySchema([RootEntity::class, SecondLevel::class]);
+        $this->setUpEntitySchema([RootEntity::class, SecondLevel::class, SecondLevelWithoutCompositePrimaryKey::class]);
 
         $a1 = new RootEntity(1, 'A');
 

tests/Tests/ORM/Functional/EnumTest.php

@@ -9,10 +9,10 @@ use Doctrine\Common\Collections\Expr\Comparison;
 use Doctrine\DBAL\Types\EnumType;
 use Doctrine\ORM\AbstractQuery;
 use Doctrine\ORM\Mapping\Column;
-use Doctrine\ORM\Mapping\Driver\AttributeDriver;
 use Doctrine\ORM\Mapping\MappingException;
 use Doctrine\ORM\Query\Expr\Func;
 use Doctrine\ORM\Tools\SchemaTool;
+use Doctrine\Tests\Mocks\AttributeDriverFactory;
 use Doctrine\Tests\Models\DataTransferObjects\DtoWithArrayOfEnums;
 use Doctrine\Tests\Models\DataTransferObjects\DtoWithEnum;
 use Doctrine\Tests\Models\Enums\BookCategory;
@@ -35,7 +35,6 @@ use Generator;
 use PHPUnit\Framework\Attributes\DataProvider;
 
 use function class_exists;
-use function dirname;
 use function sprintf;
 use function uniqid;
 
@@ -45,7 +44,9 @@ class EnumTest extends OrmFunctionalTestCase
     {
         parent::setUp();
 
-        $this->_em         = $this->getEntityManager(null, new AttributeDriver([dirname(__DIR__, 2) . '/Models/Enums'], true));
+        $mappingDriver = AttributeDriverFactory::createAttributeDriver([__DIR__ . '/../../Models/Enums']);
+
+        $this->_em         = $this->getEntityManager(null, $mappingDriver);
         $this->_schemaTool = new SchemaTool($this->_em);
 
         if ($this->isSecondLevelCacheEnabled) {

tests/Tests/ORM/Functional/Locking/LockAgentWorker.php

@@ -9,6 +9,7 @@ use Doctrine\DBAL\Connection;
 use Doctrine\ORM\Configuration;
 use Doctrine\ORM\EntityManager;
 use Doctrine\ORM\EntityManagerInterface;
+use Doctrine\Tests\Mocks\AttributeDriverFactory;
 use Doctrine\Tests\ORM\Functional\Locking\Doctrine\ORM\Query;
 use Doctrine\Tests\TestUtil;
 use GearmanWorker;
@@ -116,8 +117,8 @@ class LockAgentWorker
         TestUtil::configureProxies($config);
         $config->setAutoGenerateProxyClasses(true);
 
-        $annotDriver = new AttributeDriver([__DIR__ . '/../../../Models/']);
-        $config->setMetadataDriverImpl($annotDriver);
+        $attributeDriver = AttributeDriverFactory::createAttributeDriver([__DIR__ . '/../../../Models']);
+        $config->setMetadataDriverImpl($attributeDriver);
         $config->setMetadataCache(new ArrayAdapter());
 
         $config->setQueryCache(new ArrayAdapter());

tests/Tests/ORM/Functional/ManyToManyBasicAssociationTest.php

@@ -17,7 +17,6 @@ use Doctrine\Tests\OrmFunctionalTestCase;
 use PHPUnit\Framework\Attributes\Group;
 
 use function assert;
-use function class_exists;
 use function get_class;
 
 /**
@@ -438,7 +437,7 @@ class ManyToManyBasicAssociationTest extends OrmFunctionalTestCase
         $user = $this->_em->find($user::class, $user->id);
 
         $criteria = Criteria::create(true)
-            ->orderBy(['name' => class_exists(Order::class) ? Order::Ascending : Criteria::ASC]);
+            ->orderBy(['name' => Order::Ascending]);
 
         self::assertEquals(
             ['A', 'B', 'C', 'Developers_0'],
@@ -478,7 +477,7 @@ class ManyToManyBasicAssociationTest extends OrmFunctionalTestCase
         $user = $this->_em->find($user::class, $user->id);
 
         $criteria = Criteria::create(true)
-            ->orderBy(['name' => class_exists(Order::class) ? Order::Ascending : Criteria::ASC]);
+            ->orderBy(['name' => Order::Ascending]);
 
         self::assertEquals(
             ['A', 'B', 'C'],

tests/Tests/ORM/Functional/PaginationTest.php

@@ -678,7 +678,7 @@ SQL,
 
     public function testDifferentResultLengthsDoNotRequireExtraQueryCacheEntries(): void
     {
-        $dql   = 'SELECT u FROM Doctrine\Tests\Models\CMS\CmsUser u WHERE u.id >= :id';
+        $dql   = 'SELECT u FROM Doctrine\Tests\Models\CMS\CmsUser u WHERE u.id >= :id ORDER BY u.id';
         $query = $this->_em->createQuery($dql);
         $query->setMaxResults(10);
 

tests/Tests/ORM/Functional/ParserResultSerializationTest.php

@@ -5,6 +5,7 @@ declare(strict_types=1);
 namespace Doctrine\Tests\ORM\Functional;
 
 use Closure;
+use Doctrine\Deprecations\PHPUnit\VerifyDeprecations;
 use Doctrine\ORM\Query;
 use Doctrine\ORM\Query\Exec\FinalizedSelectExecutor;
 use Doctrine\ORM\Query\Exec\PreparedExecutorFinalizer;
@@ -16,7 +17,6 @@ use Generator;
 use PHPUnit\Framework\Attributes\DataProvider;
 use PHPUnit\Framework\Attributes\IgnoreDeprecations;
 use ReflectionMethod;
-use Symfony\Component\VarExporter\Instantiator;
 use Symfony\Component\VarExporter\VarExporter;
 
 use function file_get_contents;
@@ -26,6 +26,8 @@ use function unserialize;
 
 class ParserResultSerializationTest extends OrmFunctionalTestCase
 {
+    use VerifyDeprecations;
+
     protected function setUp(): void
     {
         $this->useModelSet('company');
@@ -78,11 +80,6 @@ class ParserResultSerializationTest extends OrmFunctionalTestCase
             },
         ];
 
-        $instantiatorMethod = new ReflectionMethod(Instantiator::class, 'instantiate');
-        if ($instantiatorMethod->getReturnType() === null) {
-            self::markTestSkipped('symfony/var-exporter 5.4+ is required.');
-        }
-
         yield 'symfony/var-exporter' => [
             static function (ParserResult $parserResult): ParserResult {
                 return eval('return ' . VarExporter::export($parserResult) . ';');
@@ -98,6 +95,8 @@ class ParserResultSerializationTest extends OrmFunctionalTestCase
         $this->assertInstanceOf(ParserResult::class, $unserialized);
         $this->assertInstanceOf(ResultSetMapping::class, $unserialized->getResultSetMapping());
         $this->assertEquals(['name' => [0]], $unserialized->getParameterMappings());
+
+        $this->expectDeprecationWithIdentifier('https://github.com/doctrine/orm/pull/11188');
         $this->assertInstanceOf(SingleSelectExecutor::class, $unserialized->getSqlExecutor());
         $this->assertIsString($unserialized->getSqlExecutor()->getSqlStatements());
     }

tests/Tests/ORM/Functional/QueryCacheTest.php

@@ -7,6 +7,7 @@ namespace Doctrine\Tests\ORM\Functional;
 use Doctrine\DBAL\Connection;
 use Doctrine\ORM\Query;
 use Doctrine\ORM\Query\Exec\AbstractSqlExecutor;
+use Doctrine\ORM\Query\Exec\SqlFinalizer;
 use Doctrine\ORM\Query\ParserResult;
 use Doctrine\Tests\OrmFunctionalTestCase;
 use PHPUnit\Framework\Attributes\Depends;
@@ -130,8 +131,11 @@ class QueryCacheTest extends OrmFunctionalTestCase
             }
         };
 
+        $sqlFinalizerMock = $this->createMock(SqlFinalizer::class);
+        $sqlFinalizerMock->method('createExecutor')->with($query)->willReturn($sqlExecutorStub);
+
         $parserResultMock = new ParserResult();
-        $parserResultMock->setSqlExecutor($sqlExecutorStub);
+        $parserResultMock->setSqlFinalizer($sqlFinalizerMock);
 
         $cache = $this->createMock(CacheItemPoolInterface::class);
 

tests/Tests/ORM/Functional/QueryTest.php

@@ -390,7 +390,7 @@ class QueryTest extends OrmFunctionalTestCase
         $this->_em->flush();
         $this->_em->clear();
 
-        $query = $this->_em->createQuery('select a, u from ' . CmsArticle::class . ' a JOIN ' . CmsUser::class . ' u WITH a.user = u');
+        $query = $this->_em->createQuery('select a, u from ' . CmsArticle::class . ' a JOIN ' . CmsUser::class . ' u ON a.user = u');
 
         $result = iterator_to_array($query->toIterable());
 
@@ -474,7 +474,9 @@ class QueryTest extends OrmFunctionalTestCase
         $this->_em->flush();
         $this->_em->clear();
 
-        $query  = $this->_em->createQuery('select a, u, a.topic, a.text from ' . CmsArticle::class . ' a, ' . CmsUser::class . ' u WHERE a.user = u ');
+        $query  = $this->_em->createQuery(
+            'select a, u, a.topic, a.text from ' . CmsArticle::class . ' a, ' . CmsUser::class . ' u WHERE a.user = u order by a.id asc',
+        );
         $result = $query->toIterable();
 
         $it = iterator_to_array($result);
@@ -517,7 +519,9 @@ class QueryTest extends OrmFunctionalTestCase
         $this->_em->flush();
         $this->_em->clear();
 
-        $query  = $this->_em->createQuery('select a.topic, a.text from ' . CmsArticle::class . ' a ');
+        $query  = $this->_em->createQuery(
+            'select a.topic, a.text from ' . CmsArticle::class . ' a order by a.id asc',
+        );
         $result = $query->toIterable();
 
         $it = iterator_to_array($result);
@@ -545,7 +549,9 @@ class QueryTest extends OrmFunctionalTestCase
         $this->_em->flush();
         $this->_em->clear();
 
-        $query = $this->_em->createQuery('select a from Doctrine\Tests\Models\CMS\CmsArticle a');
+        $query = $this->_em->createQuery(
+            'select a from Doctrine\Tests\Models\CMS\CmsArticle a order by a.id asc',
+        );
 
         $articles      = $query->toIterable();
         $iteratedCount = 0;
@@ -1061,7 +1067,7 @@ class QueryTest extends OrmFunctionalTestCase
         $query = $this->_em->createQuery('
             SELECT u, p
               FROM Doctrine\Tests\Models\CMS\CmsUser u
-             INNER JOIN Doctrine\Tests\Models\CMS\CmsPhonenumber p WITH u = p.user
+             INNER JOIN Doctrine\Tests\Models\CMS\CmsPhonenumber p ON u = p.user
         ');
         $users = $query->execute();
 
@@ -1094,7 +1100,7 @@ class QueryTest extends OrmFunctionalTestCase
         $query = $this->_em->createQuery('
             SELECT u, p
               FROM Doctrine\Tests\Models\CMS\CmsUser u
-              LEFT JOIN Doctrine\Tests\Models\CMS\CmsPhonenumber p WITH u = p.user
+              LEFT JOIN Doctrine\Tests\Models\CMS\CmsPhonenumber p ON u = p.user
         ');
         $users = $query->execute();
 

tests/Tests/ORM/Functional/ReadonlyPropertiesTest.php

@@ -4,16 +4,14 @@ declare(strict_types=1);
 
 namespace Doctrine\Tests\ORM\Functional;
 
-use Doctrine\ORM\Mapping\Driver\AttributeDriver;
 use Doctrine\ORM\Tools\SchemaTool;
+use Doctrine\Tests\Mocks\AttributeDriverFactory;
 use Doctrine\Tests\Models\ReadonlyProperties\Author;
 use Doctrine\Tests\Models\ReadonlyProperties\Book;
 use Doctrine\Tests\Models\ReadonlyProperties\SimpleBook;
 use Doctrine\Tests\OrmFunctionalTestCase;
 use Doctrine\Tests\TestUtil;
 
-use function dirname;
-
 class ReadonlyPropertiesTest extends OrmFunctionalTestCase
 {
     protected function setUp(): void
@@ -22,10 +20,9 @@ class ReadonlyPropertiesTest extends OrmFunctionalTestCase
             static::$sharedConn = TestUtil::getConnection();
         }
 
-        $this->_em         = $this->getEntityManager(null, new AttributeDriver(
-            [dirname(__DIR__, 2) . '/Models/ReadonlyProperties'],
-            true,
-        ));
+        $attributeDriver = AttributeDriverFactory::createAttributeDriver([__DIR__ . '/../../Models/ReadonlyProperties']);
+
+        $this->_em         = $this->getEntityManager(null, $attributeDriver);
         $this->_schemaTool = new SchemaTool($this->_em);
 
         parent::setUp();

tests/Tests/ORM/Functional/SchemaTool/MySqlSchemaToolTest.php

@@ -142,6 +142,8 @@ class MySqlSchemaToolTest extends OrmFunctionalTestCase
             self::equalTo('CREATE TABLE boolean_model (id INT AUTO_INCREMENT NOT NULL, booleanField TINYINT(1) NOT NULL, PRIMARY KEY(id)) DEFAULT CHARACTER SET utf8mb4 COLLATE `utf8mb4_unicode_ci` ENGINE = InnoDB'),
             // DBAL 4.3 (see https://github.com/doctrine/dbal/pull/6864)
             self::equalTo('CREATE TABLE boolean_model (id INT AUTO_INCREMENT NOT NULL, booleanField TINYINT(1) NOT NULL, PRIMARY KEY (id)) DEFAULT CHARACTER SET utf8mb4 COLLATE `utf8mb4_unicode_ci` ENGINE = InnoDB'),
+            // DBAL 4.4 (see https://github.com/doctrine/dbal/pull/7221)
+            self::equalTo('CREATE TABLE boolean_model (id INT AUTO_INCREMENT NOT NULL, booleanField TINYINT NOT NULL, PRIMARY KEY (id)) DEFAULT CHARACTER SET utf8mb4 COLLATE `utf8mb4_unicode_ci` ENGINE = InnoDB'),
         ));
     }
 

tests/Tests/ORM/Functional/Ticket/DDC1209Test.php

@@ -102,7 +102,7 @@ class DDC1209Two
     public function __construct(
         #[Id]
         #[ManyToOne(targetEntity: 'DDC1209One')]
-        #[JoinColumn(referencedColumnName: 'id', nullable: false)]
+        #[JoinColumn(referencedColumnName: 'id')]
         private DDC1209One $future1,
     ) {
         $this->startingDatetime = new DateTime2();

tests/Tests/ORM/Functional/Ticket/DDC1225Test.php

@@ -50,7 +50,7 @@ class DDC1225TestEntity1
 {
     #[Id]
     #[ManyToOne(targetEntity: 'Doctrine\Tests\ORM\Functional\Ticket\DDC1225TestEntity2')]
-    #[JoinColumn(name: 'test_entity2_id', referencedColumnName: 'id', nullable: false)]
+    #[JoinColumn(name: 'test_entity2_id', referencedColumnName: 'id')]
     private DDC1225TestEntity2|null $testEntity2 = null;
 
     public function setTestEntity2(DDC1225TestEntity2 $testEntity2): void

tests/Tests/ORM/Functional/Ticket/DDC1452Test.php

@@ -50,7 +50,7 @@ class DDC1452Test extends OrmFunctionalTestCase
         $this->_em->flush();
         $this->_em->clear();
 
-        $dql     = 'SELECT a, b, ba FROM ' . __NAMESPACE__ . '\DDC1452EntityA AS a LEFT JOIN a.entitiesB AS b LEFT JOIN b.entityATo AS ba';
+        $dql     = 'SELECT a, b, ba FROM ' . __NAMESPACE__ . '\DDC1452EntityA AS a LEFT JOIN a.entitiesB AS b LEFT JOIN b.entityATo AS ba ORDER BY a.id';
         $results = $this->_em->createQuery($dql)->setMaxResults(1)->getResult();
 
         self::assertSame($results[0], $results[0]->entitiesB[0]->entityAFrom);

tests/Tests/ORM/Functional/Ticket/DDC2084Test.php

@@ -80,7 +80,7 @@ class MyEntity1
     public function __construct(
         #[Id]
         #[OneToOne(targetEntity: 'MyEntity2')]
-        #[JoinColumn(name: 'entity2_id', referencedColumnName: 'id', nullable: false)]
+        #[JoinColumn(name: 'entity2_id', referencedColumnName: 'id')]
         private MyEntity2 $entity2,
     ) {
     }

tests/Tests/ORM/Functional/Ticket/DDC2359Test.php

@@ -49,7 +49,7 @@ class DDC2359Test extends TestCase
         $entityManager->expects(self::any())->method('getConnection')->willReturn($connection);
         $entityManager
             ->method('getEventManager')
-            ->willReturn($this->createMock(EventManager::class));
+            ->willReturn(new EventManager());
 
         $metadataFactory->method('newClassMetadataInstance')->willReturn($mockMetadata);
         $metadataFactory->expects(self::once())->method('wakeupReflection');

tests/Tests/ORM/Functional/Ticket/DDC2575Test.php

@@ -119,10 +119,10 @@ class DDC2575A
     public function __construct(
         #[Id]
         #[OneToOne(targetEntity: 'DDC2575Root', inversedBy: 'aRelation')]
-        #[JoinColumn(name: 'root_id', referencedColumnName: 'id', nullable: false, onDelete: 'CASCADE')]
+        #[JoinColumn(name: 'root_id', referencedColumnName: 'id', onDelete: 'CASCADE')]
         public DDC2575Root $rootRelation,
         #[ManyToOne(targetEntity: 'DDC2575B')]
-        #[JoinColumn(name: 'b_id', referencedColumnName: 'id', nullable: false, onDelete: 'CASCADE')]
+        #[JoinColumn(name: 'b_id', referencedColumnName: 'id', onDelete: 'CASCADE')]
         public DDC2575B $bRelation,
     ) {
     }

tests/Tests/ORM/Functional/Ticket/DDC3042Test.php

@@ -31,7 +31,7 @@ class DDC3042Test extends OrmFunctionalTestCase
                 $this
                 ->_em
                 ->createQuery(
-                    'SELECT f, b FROM ' . __NAMESPACE__ . '\DDC3042Foo f JOIN ' . __NAMESPACE__ . '\DDC3042Bar b WITH 1 = 1',
+                    'SELECT f, b FROM ' . __NAMESPACE__ . '\DDC3042Foo f JOIN ' . __NAMESPACE__ . '\DDC3042Bar b ON 1 = 1',
                 )
                 ->getSQL(),
                 'field_11',

tests/Tests/ORM/Functional/Ticket/GH10387Test.php

@@ -34,7 +34,7 @@ class GH10387Test extends OrmTestCase
     {
         yield 'hierarchy with Entity classes only' => [[GH10387EntitiesOnlyRoot::class, GH10387EntitiesOnlyMiddle::class, GH10387EntitiesOnlyLeaf::class]];
         yield 'MappedSuperclass in the middle of the hierarchy' => [[GH10387MappedSuperclassRoot::class, GH10387MappedSuperclassMiddle::class, GH10387MappedSuperclassLeaf::class]];
-        yield 'abstract entity the the root and in the middle of the hierarchy' => [[GH10387AbstractEntitiesRoot::class, GH10387AbstractEntitiesMiddle::class, GH10387AbstractEntitiesLeaf::class]];
+        yield 'abstract entity at the root and in the middle of the hierarchy' => [[GH10387AbstractEntitiesRoot::class, GH10387AbstractEntitiesMiddle::class, GH10387AbstractEntitiesLeaf::class]];
     }
 }
 

tests/Tests/ORM/Functional/Ticket/GH12166/GH12166Test.php

@@ -0,0 +1,32 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Doctrine\Tests\ORM\Functional\Ticket\GH12166;
+
+use Doctrine\Tests\OrmFunctionalTestCase;
+
+class GH12166Test extends OrmFunctionalTestCase
+{
+    public function testProxyWithReadonlyIdIsNotInitializedImmediately(): void
+    {
+        $this->createSchemaForModels(LazyEntityWithReadonlyId::class);
+        $this->_em->persist(new LazyEntityWithReadonlyId(123, 'Test Name'));
+        $this->_em->flush();
+        $this->_em->clear();
+        $proxy = $this->_em->getReference(LazyEntityWithReadonlyId::class, 123);
+
+        $reflClass = $this->_em->getClassMetadata(LazyEntityWithReadonlyId::class)->reflClass;
+        self::assertTrue(
+            $this->isUninitializedObject($proxy),
+            'Proxy should remain uninitialized after creation',
+        );
+
+        $id = $proxy->getId();
+        self::assertSame(123, $id);
+        self::assertTrue(
+            $this->isUninitializedObject($proxy),
+            'Proxy should remain uninitialized after accessing ID',
+        );
+    }
+}

tests/Tests/ORM/Functional/Ticket/GH12166/LazyEntityWithReadonlyId.php

@@ -0,0 +1,43 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Doctrine\Tests\ORM\Functional\Ticket\GH12166;
+
+use Doctrine\ORM\Mapping\Column;
+use Doctrine\ORM\Mapping\Entity;
+use Doctrine\ORM\Mapping\Id;
+use Doctrine\ORM\Mapping\Table;
+
+#[Entity]
+#[Table(name: 'gh12166_lazy_entity')]
+class LazyEntityWithReadonlyId
+{
+    #[Column(type: 'integer')]
+    #[Id]
+    private readonly int $id;
+
+    #[Column(type: 'string')]
+    private string $name;
+
+    public function __construct(int $id, string $name)
+    {
+        $this->id   = $id;
+        $this->name = $name;
+    }
+
+    public function getId(): int
+    {
+        return $this->id;
+    }
+
+    public function getName(): string
+    {
+        return $this->name;
+    }
+
+    public function setName(string $name): void
+    {
+        $this->name = $name;
+    }
+}

tests/Tests/ORM/Functional/Ticket/GH12254Test.php

@@ -0,0 +1,54 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Doctrine\Tests\ORM\Functional\Ticket;
+
+use Doctrine\ORM\Mapping\Column;
+use Doctrine\ORM\Mapping\Entity;
+use Doctrine\ORM\Mapping\GeneratedValue;
+use Doctrine\ORM\Mapping\Id;
+use Doctrine\Tests\OrmFunctionalTestCase;
+
+class GH12254Test extends OrmFunctionalTestCase
+{
+    protected function setUp(): void
+    {
+        parent::setUp();
+
+        $this->setUpEntitySchema([
+            GH12254EntityA::class,
+        ]);
+
+        $this->_em->persist(new GH12254EntityA());
+        $this->_em->flush();
+        $this->_em->clear();
+    }
+
+    public function testFindByEmptyArrayShouldReturnEmptyArray(): void
+    {
+        // pretend we are starting afresh
+        $this->_em = $this->getEntityManager();
+        $result    = $this->_em->getRepository(GH12254EntityA::class)->findBy(['id' => []]);
+        $this->assertEmpty($result);
+    }
+
+    public function testFindByInNullableField(): void
+    {
+        $this->_em = $this->getEntityManager();
+        $result    = $this->_em->getRepository(GH12254EntityA::class)->findBy(['name' => []]);
+        $this->assertEmpty($result);
+    }
+}
+
+#[Entity]
+class GH12254EntityA
+{
+    #[Column(type: 'integer')]
+    #[Id]
+    #[GeneratedValue(strategy: 'AUTO')]
+    public int $id;
+
+    #[Column(type: 'string', nullable: true)]
+    public string|null $name = null;
+}

tests/Tests/ORM/Functional/Ticket/GH6362Test.php

@@ -39,7 +39,7 @@ final class GH6362Test extends OrmFunctionalTestCase
      * SELECT a as base, b, c, d
      * FROM Start a
      * LEFT JOIN a.bases b
-     * LEFT JOIN Child c WITH b.id = c.id
+     * LEFT JOIN Child c ON b.id = c.id
      * LEFT JOIN c.joins d
      */
     #[Group('GH-6362')]

tests/Tests/ORM/Functional/Ticket/GH6394Test.php

@@ -23,7 +23,7 @@ class GH6394Test extends OrmFunctionalTestCase
     }
 
     /**
-     * Test the the version of an entity can be fetched, when the id field and
+     * Test the version of an entity can be fetched, when the id field and
      * the id column are different.
      */
     #[Group('6393')]

tests/Tests/ORM/Functional/Ticket/GH6464Test.php

@@ -39,7 +39,7 @@ class GH6464Test extends OrmFunctionalTestCase
         $query = $this->_em->createQueryBuilder()
             ->select('p')
             ->from(GH6464Post::class, 'p')
-            ->innerJoin(GH6464Author::class, 'a', 'WITH', 'p.authorId = a.id')
+            ->innerJoin(GH6464Author::class, 'a', 'ON', 'p.authorId = a.id')
             ->getQuery();
 
         self::assertDoesNotMatchRegularExpression(