Merge pull request #12424 from doctrine/3.6.x-merge-up-into-3.7.x_xA84VK5A

Merge release 3.6.3 into 3.7.x

.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/dependabot.yml

@@ -7,3 +7,7 @@ updates:
     labels:
       - "CI"
     target-branch: "2.20.x"
+    groups:
+      doctrine:
+        patterns:
+          - "doctrine/*"

.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@14.0.0"

.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@14.0.0"

.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
 
@@ -80,12 +99,24 @@ 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: "${{ matrix.native_lazy == '0' }}"
+
       - name: "Install dependencies with Composer"
-        uses: "ramsey/composer-install@v3"
+        uses: "ramsey/composer-install@v4"
         with:
           composer-options: "--ignore-platform-req=php+"
           dependency-versions: "${{ matrix.deps }}"
@@ -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@v7"
         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
 
@@ -220,7 +257,7 @@ jobs:
         if: "${{ matrix.dbal-version != 'default' }}"
 
       - name: "Install dependencies with Composer"
-        uses: "ramsey/composer-install@v3"
+        uses: "ramsey/composer-install@v4"
         with:
           composer-options: "--ignore-platform-req=php+"
 
@@ -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@v7"
         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
 
@@ -288,7 +331,7 @@ jobs:
           extensions: "${{ matrix.extension }}"
 
       - name: "Install dependencies with Composer"
-        uses: "ramsey/composer-install@v3"
+        uses: "ramsey/composer-install@v4"
         with:
           composer-options: "--ignore-platform-req=php+"
 
@@ -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@v7"
         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
 
@@ -364,7 +413,7 @@ jobs:
         if: "${{ matrix.dbal-version != 'default' }}"
 
       - name: "Install dependencies with Composer"
-        uses: "ramsey/composer-install@v3"
+        uses: "ramsey/composer-install@v4"
         with:
           composer-options: "--ignore-platform-req=php+"
 
@@ -393,7 +442,7 @@ jobs:
             ENABLE_SECOND_LEVEL_CACHE: 1
 
       - name: "Upload coverage files"
-        uses: "actions/upload-artifact@v5"
+        uses: "actions/upload-artifact@v7"
         with:
           name: "${{ github.job }}-${{ matrix.mysql-version }}-${{ matrix.extension }}-${{ matrix.php-version }}-${{ matrix.dbal-version }}-coverage"
           path: "coverage*.xml"
@@ -411,17 +460,17 @@ 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@v8"
         with:
           path: "reports"
 
       - name: "Upload to Codecov"
-        uses: "codecov/codecov-action@v5"
+        uses: "codecov/codecov-action@v6"
         with:
           directory: reports
         env:

.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@14.0.0"

.github/workflows/phpbench.yml

@@ -36,7 +36,7 @@ jobs:
 
     steps:
       - name: "Checkout"
-        uses: "actions/checkout@v5"
+        uses: "actions/checkout@v6"
         with:
           fetch-depth: 2
 
@@ -48,7 +48,7 @@ jobs:
           ini-values: "zend.assertions=1, apc.enable_cli=1"
 
       - name: "Install dependencies with Composer"
-        uses: "ramsey/composer-install@v3"
+        uses: "ramsey/composer-install@v4"
 
       - name: "Run PHPBench"
         run: "vendor/bin/phpbench run --report=default"

.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@14.0.0"
     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
@@ -50,7 +50,7 @@ jobs:
 
 
       - name: Install dependencies with Composer
-        uses: ramsey/composer-install@v2
+        uses: ramsey/composer-install@v4
 
       - name: Run static analysis with phpstan/phpstan
         run: "vendor/bin/phpstan analyse -c ${{ matrix.config }} --error-format=checkstyle | cs2pr"

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 +27,185 @@ 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 3.7
+
+## Conditional breaking changes
+
+3.7 adds support for `doctrine/collections` 3. If you upgrade to that version
+of `doctrine/collections`, there are breaking changes in `doctrine/orm` as well,
+because of cross-package inheritance and type declarations.
+
+Most notably, `Doctrine\ORM\PersistentCollection::add` no longer returns a boolean:
+
+```diff
+- public function add(mixed $value): bool
++ public function add(mixed $value): void
+```
+
+That method always returned `true`, so you can safely stop using the return
+value before upgrading.
+
+Also, if you extend `Doctrine\ORM\Persisters\SqlValueVisitor`, you need to
+ensure the following methods have a return type in your subclasses:
+
+- `walkComparison()`
+- `walkCompositeExpression()`
+- `walkValue()`
+
+## Deprecate `EventManager` return type in `EntityManager` methods
+
+The return type of the following methods has been changed from
+`Doctrine\Common\EventManager` to `Doctrine\Common\EventManagerInterface`:
+
+- `Doctrine\ORM\Decorator\EntityManagerDecorator::getEventManager()`
+- `Doctrine\ORM\EntityManager::getEventManager()`
+- `Doctrine\ORM\EntityManagerInterface::getEventManager()`
+
+All three methods continue to return an instance of `EventManager`, however
+relying on that is deprecated and will no longer be the guaranteed in 4.0.
+
+# 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 +2338,7 @@ 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

@@ -1,19 +1,76 @@
 {
     "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"
+    "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"
+        }
+    ],
+    "homepage": "https://www.doctrine-project.org/projects/orm.html",
+    "require": {
+        "php": "^8.1",
+        "ext-ctype": "*",
+        "composer-runtime-api": "^2",
+        "doctrine/collections": "^2.2 || ^3",
+        "doctrine/dbal": "^3.8.2 || ^4",
+        "doctrine/deprecations": "^0.5.3 || ^1",
+        "doctrine/event-manager": "^2.1.1",
+        "doctrine/inflector": "^1.4 || ^2.0",
+        "doctrine/instantiator": "^1.3 || ^2",
+        "doctrine/lexer": "^3",
+        "doctrine/persistence": "^3.3.1 || ^4",
+        "psr/cache": "^1 || ^2 || ^3",
+        "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",
+        "phpstan/extension-installer": "^1.4",
+        "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 || ^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"
+        }
+    },
+    "autoload-dev": {
+        "psr-4": {
+            "Doctrine\\Performance\\": "tests/Performance",
+            "Doctrine\\StaticAnalysis\\": "tests/StaticAnalysis",
+            "Doctrine\\Tests\\": "tests/Tests"
+        }
     },
     "config": {
         "allow-plugins": {
@@ -23,48 +80,7 @@
         },
         "sort-packages": true
     },
-    "require": {
-        "php": "^8.1",
-        "composer-runtime-api": "^2",
-        "ext-ctype": "*",
-        "doctrine/collections": "^2.2",
-        "doctrine/dbal": "^3.8.2 || ^4",
-        "doctrine/deprecations": "^0.5.3 || ^1",
-        "doctrine/event-manager": "^1.2 || ^2",
-        "doctrine/inflector": "^1.4 || ^2.0",
-        "doctrine/instantiator": "^1.3 || ^2",
-        "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"
-    },
-    "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-deprecation-rules": "^2",
-        "phpunit/phpunit": "^10.5.0 || ^11.5",
-        "psr/log": "^1 || ^2 || ^3",
-        "symfony/cache": "^5.4 || ^6.2 || ^7.0"
-    },
-    "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" }
-    },
-    "autoload-dev": {
-        "psr-4": {
-            "Doctrine\\Tests\\": "tests/Tests",
-            "Doctrine\\StaticAnalysis\\": "tests/StaticAnalysis",
-            "Doctrine\\Performance\\": "tests/Performance"
-        }
-    },
-    "archive": {
-        "exclude": ["!vendor", "tests", "*phpunit.xml", "build.xml", "build.properties", "composer.phar", "vendor/satooshi", "lib/vendor", "*.swp"]
+    "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

@@ -168,7 +168,7 @@ Here is a complete list of ``Column``s attributes (all optional):
 - ``insertable`` (default: ``true``): Whether the column should be inserted.
 - ``updatable`` (default: ``true``): Whether the column should be updated.
 - ``generated`` (default: ``null``): Whether the generated strategy should be ``'NEVER'``, ``'INSERT'`` and ``ALWAYS``.
-- ``enumType`` (requires PHP 8.1 and ``doctrine/orm`` 2.11): The PHP enum class name to convert the database value into.
+- ``enumType`` (requires PHP 8.1 and ``doctrine/orm`` 2.11): The PHP enum class name to convert the database value into. See :ref:`reference-enum-mapping`.
 - ``precision`` (default: 0): The precision for a decimal (exact numeric) column
   (applies only for decimal column),
   which is the maximum number of digits that are stored for the values.
@@ -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
@@ -290,6 +321,160 @@ that value and raw value are different, you have to use the raw value representa
     $messageRepository = $entityManager->getRepository(Message::class);
     $deMessages = $messageRepository->findBy(['language' => 'de']); // Use lower case here for raw value representation
 
+.. _reference-enum-mapping:
+
+Mapping PHP Enums
+-----------------
+
+.. versionadded:: 2.11
+
+Doctrine natively supports mapping PHP backed enums to database columns.
+A backed enum is a PHP enum that the same scalar type (``string`` or ``int``)
+assigned to each case. Doctrine stores the scalar value in the database and
+converts it back to the enum instance when hydrating the entity.
+
+Using ``enumType`` provides three main benefits:
+
+- **Automatic conversion**: Doctrine handles the conversion in both directions
+  transparently. When loading an entity, scalar values from the database are
+  converted into enum instances. When persisting, enum instances are reduced
+  to their scalar ``->value`` before being sent to the database.
+- **Type-safety**: Entity properties contain enum instances directly. Your
+  getters return ``Suit`` instead of ``string``, removing the need to call
+  ``Suit::from()`` manually.
+- **Validation**: When a database value does not match any enum case, Doctrine
+  throws a ``MappingException`` during hydration instead of silently returning
+  an invalid value.
+
+This feature works with all database platforms supported by Doctrine (MySQL,
+PostgreSQL, SQLite, etc.) as it relies on standard column types (``string``,
+``integer``, ``json``, ``simple_array``) rather than any vendor-specific enum
+type.
+
+.. note::
+
+    This is unrelated to the MySQL-specific ``ENUM`` column type covered in
+    :doc:`the MySQL Enums cookbook entry </cookbook/mysql-enums>`.
+
+Defining an Enum
+~~~~~~~~~~~~~~~~
+
+.. literalinclude:: basic-mapping/Suit.php
+    :language: php
+
+Only backed enums (``string`` or ``int``) are supported. Unit enums (without
+a scalar value) cannot be mapped.
+
+Single-Value Columns
+~~~~~~~~~~~~~~~~~~~~
+
+Use the ``enumType`` option on ``#[Column]`` to map a property to a backed enum.
+The underlying database column stores the enum's scalar value (``string`` or ``int``).
+
+.. literalinclude:: basic-mapping/EnumMapping.php
+    :language: php
+
+When the PHP property is typed with the enum class, Doctrine automatically
+infers the appropriate column type (``string`` for string-backed enums,
+``integer`` for int-backed enums) and sets ``enumType``. You can also specify
+the column ``type`` explicitly.
+
+Storing Collections of Enums
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+You can store multiple enum values in a single column by combining ``enumType``
+with a collection column type: ``json`` or ``simple_array``.
+
+.. note::
+
+    Automatic type inference does not apply to collection columns. When the
+    PHP property is typed as ``array``, Doctrine cannot detect the enum class.
+    You must specify both ``type`` and ``enumType`` explicitly.
+
+.. literalinclude:: basic-mapping/EnumCollectionMapping.php
+    :language: php
+
+With ``json``, the values are stored as a JSON array (e.g. ``["hearts","spades"]``).
+With ``simple_array``, the values are stored as a comma-separated string
+(e.g. ``hearts,spades``).
+
+In both cases, Doctrine converts each element to and from the enum
+automatically during hydration and persistence.
+
+.. tip::
+
+    Use ``json`` when enum values may contain commas, when you need to store
+    int-backed enums (as it preserves value types), when the column also
+    stores complex/nested data structures, or when you want to query individual
+    values using database-native JSON operators (e.g. PostgreSQL ``jsonb``).
+    Prefer ``simple_array`` for a compact, human-readable storage of
+    string-backed enums whose values do not contain commas.
+
++-------------------+-----------------------------+-------------------------------+
+| Column type       | Database storage            | PHP type                      |
++===================+=============================+===============================+
+| ``string``        | ``hearts``                  | ``Suit``                      |
++-------------------+-----------------------------+-------------------------------+
+| ``integer``       | ``1``                       | ``Priority``                  |
++-------------------+-----------------------------+-------------------------------+
+| ``json``          | ``["hearts","spades"]``     | ``array<Suit>``               |
++-------------------+-----------------------------+-------------------------------+
+| ``simple_array``  | ``hearts,spades``           | ``array<Suit>``               |
++-------------------+-----------------------------+-------------------------------+
+
+Nullable Enums
+~~~~~~~~~~~~~~
+
+Enum columns can be nullable. When the database value is ``NULL``, Doctrine
+preserves it as ``null`` without triggering any validation error.
+
+.. code-block:: php
+
+    <?php
+    #[ORM\Column(type: 'string', nullable: true, enumType: Suit::class)]
+    private Suit|null $suit = null;
+
+Default Values
+~~~~~~~~~~~~~~
+
+You can specify a database-level default using an enum case directly in the
+column options:
+
+.. code-block:: php
+
+    <?php
+    #[ORM\Column(options: ['default' => Suit::Hearts])]
+    public Suit $suit;
+
+Using Enums in Queries
+~~~~~~~~~~~~~~~~~~~~~~
+
+Enum instances can be used directly as parameters in DQL, QueryBuilder, and
+repository methods. Doctrine converts them to their scalar value automatically.
+
+.. code-block:: php
+
+    <?php
+    // QueryBuilder
+    $qb = $em->createQueryBuilder();
+    $qb->select('c')
+        ->from(Card::class, 'c')
+        ->where('c.suit = :suit')
+        ->setParameter('suit', Suit::Clubs);
+
+    // Repository
+    $cards = $em->getRepository(Card::class)->findBy(['suit' => Suit::Clubs]);
+
+XML Mapping
+~~~~~~~~~~~
+
+When using XML mapping, the ``enum-type`` attribute is used on ``<field>``
+elements:
+
+.. code-block:: xml
+
+    <field name="suit" type="string" enum-type="App\Entity\Suit" />
+
 .. _reference-mapping-types:
 
 Doctrine Mapping Types

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/EnumCollectionMapping.php

@@ -0,0 +1,24 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Entity;
+
+use Doctrine\ORM\Mapping as ORM;
+
+#[ORM\Entity]
+class Player
+{
+    #[ORM\Id]
+    #[ORM\GeneratedValue]
+    #[ORM\Column]
+    private int $id;
+
+    /** @var list<Suit> */
+    #[ORM\Column(type: 'json', enumType: Suit::class)]
+    private array $favouriteSuits = [];
+
+    /** @var list<Suit> */
+    #[ORM\Column(type: 'simple_array', enumType: Suit::class)]
+    private array $allowedSuits = [];
+}

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

@@ -0,0 +1,19 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Entity;
+
+use Doctrine\ORM\Mapping as ORM;
+
+#[ORM\Entity]
+class Card
+{
+    #[ORM\Id]
+    #[ORM\GeneratedValue]
+    #[ORM\Column]
+    private int $id;
+
+    #[ORM\Column(enumType: Suit::class)]
+    private Suit $suit;
+}

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

@@ -0,0 +1,13 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Entity;
+
+enum Suit: string
+{
+    case Hearts   = 'hearts';
+    case Diamonds = 'diamonds';
+    case Clubs    = 'clubs';
+    case Spades   = 'spades';
+}

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:
 

docs/en/tutorials/pagination.rst

@@ -1,6 +1,41 @@
 Pagination
 ==========
 
+Doctrine ORM provides two pagination strategies for DQL queries. Both handle
+the low-level SQL plumbing, but they make different trade-offs:
+
+.. list-table::
+   :header-rows: 1
+
+   * - Feature
+     - Offset ``Paginator``
+     - ``CursorPaginator``
+   * - Total count
+     - Yes
+     - No
+   * - Random access to page N
+     - Yes
+     - No
+   * - Stable under concurrent inserts/deletes
+     - No
+     - Yes
+   * - Performance on deep pages
+     - Degrades (OFFSET scan)
+     - Constant (index range scan)
+   * - Requires deterministic ORDER BY
+     - No
+     - Yes
+
+Choose the **Offset Paginator** when you need a total page count or want to
+let users jump to an arbitrary page number.
+
+Choose the **Cursor Paginator** when you need stable, high-performance
+pagination on large datasets and a simple previous/next navigation is
+sufficient.
+
+Offset-Based Pagination
+-----------------------
+
 Doctrine ORM ships with a Paginator for DQL queries. It
 has a very simple API and implements the SPL interfaces ``Countable`` and
 ``IteratorAggregate``.
@@ -58,3 +93,178 @@ In this way the `DISTINCT` keyword will be omitted and can bring important perfo
                            ->setHint(Paginator::HINT_ENABLE_DISTINCT, false)
                            ->setFirstResult(0)
                            ->setMaxResults(100);
+
+Cursor-Based Pagination
+-----------------------
+
+Doctrine ORM ships with a ``CursorPaginator`` for cursor-based pagination of DQL queries.
+Unlike offset-based pagination, cursor pagination uses opaque pointers (cursors) derived
+from the last seen row to fetch the next or previous page. This makes it stable and
+performant on large datasets — no matter how deep you paginate, the database always uses
+an index range scan instead of skipping rows.
+
+.. note::
+
+    Cursor pagination requires a **deterministic ``ORDER BY`` clause**. Every column
+    combination used for sorting must uniquely identify a position in the result set.
+    A common pattern is to sort by a timestamp and then by primary key as a tie-breaker.
+
+Basic Usage
+~~~~~~~~~~~
+
+The ``$cursor`` parameter is an opaque string produced by a previous call to
+``getNextCursorAsString()`` or ``getPreviousCursorAsString()``. On the first request
+it is ``null`` or an empty string ``''`` — both are treated identically as the first
+page. It is typically read from the incoming HTTP query string:
+
+.. code-block:: php
+
+    $cursor = $_GET['cursor'] ?? null; // null or '' on the first page
+
+.. code-block:: php
+
+    <?php
+    use Doctrine\ORM\Tools\CursorPagination\CursorPaginator;
+
+    $dql = 'SELECT p FROM BlogPost p ORDER BY p.createdAt DESC, p.id DESC';
+    $query = $entityManager->createQuery($dql);
+
+    $paginator = (new CursorPaginator($query))
+        ->paginate(cursor: $cursor, limit: 15);
+
+    foreach ($paginator as $post) {
+        echo $post->getTitle() . "\n";
+    }
+
+    echo $paginator->getPreviousCursorAsString(); // previous encoded cursor string
+    echo $paginator->getNextCursorAsString();     // next encoded cursor string
+
+Navigating Pages
+~~~~~~~~~~~~~~~~
+
+Pass the encoded cursor back on subsequent requests to move forward or backward:
+
+.. code-block:: php
+
+    <?php
+    // Next page
+    $paginator->paginate(15, $nextCursor);
+
+    // Previous page
+    $paginator->paginate(15, $previousCursor);
+
+The cursor is an encoded string containing the location at which the next query should begin fetching results, along with the navigation direction.
+
+API Reference
+~~~~~~~~~~~~~
+
+``CursorPaginator::paginate(?string $cursor, int $limit): self``
+    Executes the query and stores the results. Fetches ``$limit + 1`` rows to
+    detect whether a further page exists, then trims the extra row. Returns
+    ``$this`` for chaining.
+
+``CursorPaginator::getNextCursor(): Cursor``
+    Returns the ``Cursor`` object for the next page. Throws a ``LogicException``
+    if there is no next page — call ``hasNextPage()`` first.
+
+``CursorPaginator::getPreviousCursor(): Cursor``
+    Returns the ``Cursor`` object for the previous page. Throws a ``LogicException``
+    if there is no previous page — call ``hasPreviousPage()`` first.
+
+``CursorPaginator::getNextCursorAsString(): string``
+    Returns the encoded cursor to retrieve the next page. Throws a
+    ``LogicException`` if there is no next page — call ``hasNextPage()`` first.
+
+``CursorPaginator::getPreviousCursorAsString(): string``
+    Returns the encoded cursor to retrieve the previous page. Throws a
+    ``LogicException`` if there is no previous page — call ``hasPreviousPage()`` first.
+
+``CursorPaginator::hasNextPage(): bool``
+    Returns whether a next page is available.
+
+``CursorPaginator::hasPreviousPage(): bool``
+    Returns whether a previous page is available.
+
+``CursorPaginator::hasToPaginate(): bool``
+    Returns whether either a next or previous page exists (i.e. the result
+    set spans more than one page).
+
+``CursorPaginator::getValues(): array``
+    Returns the raw entity array for the current page.
+
+``CursorPaginator::getItems(): array``
+    Returns an array of ``CursorItem`` objects, each wrapping an entity and its
+    individual ``Cursor``. Useful when you need per-row cursors.
+
+``CursorPaginator::getCursorForItem(mixed $item, bool $isNext = true): Cursor``
+    Builds a ``Cursor`` pointing at a specific entity. ``$isNext = true`` means
+    "start *after* this item"; ``false`` means "start *before* this item".
+
+``CursorPaginator::count(): int``
+    Returns the number of items on the current page (implements ``Countable``).
+
+**Next page**
+
+.. code-block:: sql
+
+    SELECT ...
+    FROM   post p
+    WHERE  (p.created_at < :cursor_val_0)
+       OR  (p.created_at = :cursor_val_0 AND p.id < :cursor_id_1)
+    ORDER  BY p.created_at DESC, p.id DESC
+    LIMIT  16   -- limit + 1
+
+**Previous page**
+
+.. code-block:: sql
+
+    SELECT ...
+    FROM   post p
+    WHERE  (p.created_at > :cursor_val_0)
+       OR  (p.created_at = :cursor_val_0 AND p.id > :cursor_id_1)
+    ORDER  BY p.created_at ASC, p.id ASC   -- reversed
+    LIMIT  16
+
+HTML Template Example
+~~~~~~~~~~~~~~~~~~~~~
+
+The following example shows how to render a paginated list with previous/next
+navigation links using the ``CursorPaginator`` in a PHP template:
+
+.. literalinclude:: pagination/cursor-pagination.php
+   :language: php
+
+Cursor Encoding
+~~~~~~~~~~~~~~~
+
+A cursor is serialized to a URL-safe string via ``Cursor::encodeToString()`` and
+deserialized back via the static ``Cursor::fromEncodedString()``. The format is a
+JSON object encoded with URL-safe Base64 (no padding):
+
+.. code-block:: json
+
+    {
+        "p.createdAt": "2024-01-15T10:30:00+00:00",
+        "p.id": 42,
+        "_isNext": true
+    }
+
+The ``_isNext`` flag distinguishes next-page cursors from previous-page cursors.
+All other keys are the DQL path expressions (``alias.field``) of the ``ORDER BY``
+columns, and their values are the database representations of the pivot row's
+field values.
+
+If you need a different serialization format (e.g. encryption), build it on top of
+a ``Cursor`` instance: call ``$cursor->toArray()`` to get the raw data, apply your
+own encoding, and reconstruct with ``new Cursor($parameters, $isNext)``.
+
+Limitations
+~~~~~~~~~~~
+
+- Every ``ORDER BY`` column must map to an entity field. Raw SQL expressions or
+  computed columns in ``ORDER BY`` are not supported.
+- ``COUNT`` queries are not available; cursor pagination does not know the total
+  number of results by design. If you need a total count, use the
+  offset-based ``Paginator`` described above.
+- The query must have at least one ``ORDER BY`` item; the paginator throws a
+  ``LogicException`` otherwise.

docs/en/tutorials/pagination/cursor-pagination.php

@@ -0,0 +1,31 @@
+<?php
+
+use Doctrine\ORM\Tools\CursorPagination\CursorPaginator;
+
+$cursor = $_GET['cursor'] ?? null;
+
+$query = $entityManager->createQuery('SELECT p FROM BlogPost p ORDER BY p.createdAt DESC, p.id DESC');
+
+/** @var CursorPaginator<BlogPost> $paginator */
+$paginator = (new CursorPaginator($query))
+    ->paginate(cursor: $cursor, limit: 15);
+?>
+<p><?= $paginator->count() ?> result(s) on this page.</p>
+
+<ul>
+    <?php foreach ($paginator as $post): ?>
+        <li><?= escape($post->getTitle()) ?></li>
+    <?php endforeach ?>
+</ul>
+
+<?php if ($paginator->hasToPaginate()): ?>
+    <nav>
+        <?php if ($paginator->hasPreviousPage()): ?>
+            <a href="?cursor=<?= escape($paginator->getPreviousCursorAsString()) ?>">Previous</a>
+        <?php endif ?>
+
+        <?php if ($paginator->hasNextPage()): ?>
+            <a href="?cursor=<?= escape($paginator->getNextCursorAsString()) ?>">Next</a>
+        <?php endif ?>
+    </nav>
+<?php endif ?>

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"/>

phpcs.xml.dist

@@ -52,6 +52,8 @@
     <rule ref="PSR1.Classes.ClassDeclaration.MultipleClasses">
         <exclude-pattern>src/Mapping/Driver/LoadMappingFileImplementation.php</exclude-pattern>
         <exclude-pattern>src/Mapping/GetReflectionClassImplementation.php</exclude-pattern>
+        <exclude-pattern>src/Persisters/SqlValueVisitorImplementation.php</exclude-pattern>
+        <exclude-pattern>src/PersistentCollectionImplementation.php</exclude-pattern>
         <exclude-pattern>tests/*</exclude-pattern>
     </rule>
 

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
@@ -1681,7 +1681,7 @@ parameters:
 			path: src/PersistentCollection.php
 
 		-
-			message: '#^Method Doctrine\\ORM\\PersistentCollection\:\:matching\(\) should return Doctrine\\Common\\Collections\\Collection\<TKey of \(int\|string\), T\> but returns Doctrine\\Common\\Collections\\ReadableCollection\<TKey of \(int\|string\), T\>&Doctrine\\Common\\Collections\\Selectable\<TKey of \(int\|string\), T\>\.$#'
+			message: '#^Method Doctrine\\ORM\\PersistentCollection\:\:matching\(\) should return Doctrine\\Common\\Collections\\Collection\<TKey of \(int\|string\), T\> but returns Doctrine\\Common\\Collections\\ReadableCollection\<TKey of \(int\|string\), T\>\.$#'
 			identifier: return.type
 			count: 1
 			path: src/PersistentCollection.php
@@ -1693,7 +1693,7 @@ parameters:
 			path: src/PersistentCollection.php
 
 		-
-			message: '#^Parameter \#2 \$callback of function array_walk expects callable\(object, int\)\: mixed, array\{Doctrine\\Common\\Collections\\Collection\<TKey of \(int\|string\), T\>&Doctrine\\Common\\Collections\\Selectable\<TKey of \(int\|string\), T\>, ''add''\} given\.$#'
+			message: '#^Parameter \#2 \$callback of function array_walk expects callable\(object, int\)\: mixed, array\{Doctrine\\Common\\Collections\\Collection\<TKey of \(int\|string\), T\>, ''add''\} given\.$#'
 			identifier: argument.type
 			count: 1
 			path: src/PersistentCollection.php
@@ -1818,6 +1818,12 @@ parameters:
 			count: 1
 			path: src/Persisters/Collection/ManyToManyPersister.php
 
+		-
+			message: '#^Method Doctrine\\ORM\\Persisters\\Collection\\ManyToManyPersister\:\:count\(\) should return int\<0, max\> but returns int\.$#'
+			identifier: return.type
+			count: 1
+			path: src/Persisters/Collection/ManyToManyPersister.php
+
 		-
 			message: '#^Method Doctrine\\ORM\\Persisters\\Collection\\ManyToManyPersister\:\:delete\(\) has parameter \$collection with generic class Doctrine\\ORM\\PersistentCollection but does not specify its types\: TKey, T$#'
 			identifier: missingType.generics
@@ -2557,7 +2563,7 @@ 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
@@ -2580,36 +2586,12 @@ parameters:
 			count: 1
 			path: src/Query/Exec/SingleTableDeleteUpdateExecutor.php
 
-		-
-			message: '#^PHPDoc type array\<string\> of property Doctrine\\ORM\\Query\\Expr\\Andx\:\:\$allowedClasses is not covariant with PHPDoc type list\<class\-string\> of overridden property Doctrine\\ORM\\Query\\Expr\\Base\:\:\$allowedClasses\.$#'
-			identifier: property.phpDocType
-			count: 1
-			path: src/Query/Expr/Andx.php
-
 		-
 			message: '#^Method Doctrine\\ORM\\Query\\Expr\\Func\:\:getArguments\(\) should return list\<mixed\> but returns array\<mixed\>\.$#'
 			identifier: return.type
 			count: 1
 			path: src/Query/Expr/Func.php
 
-		-
-			message: '#^PHPDoc type array\<string\> of property Doctrine\\ORM\\Query\\Expr\\Orx\:\:\$allowedClasses is not covariant with PHPDoc type list\<class\-string\> of overridden property Doctrine\\ORM\\Query\\Expr\\Base\:\:\$allowedClasses\.$#'
-			identifier: property.phpDocType
-			count: 1
-			path: src/Query/Expr/Orx.php
-
-		-
-			message: '#^PHPDoc type array\<string\> of property Doctrine\\ORM\\Query\\Expr\\Select\:\:\$allowedClasses is not covariant with PHPDoc type list\<class\-string\> of overridden property Doctrine\\ORM\\Query\\Expr\\Base\:\:\$allowedClasses\.$#'
-			identifier: property.phpDocType
-			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 +2862,6 @@ 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 +3327,12 @@ 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 +3348,7 @@ 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
 
 		-
@@ -3453,12 +3435,6 @@ parameters:
 			count: 2
 			path: src/UnitOfWork.php
 
-		-
-			message: '#^Parameter \#3 \$collection of class Doctrine\\ORM\\PersistentCollection constructor expects Doctrine\\Common\\Collections\\Collection\<\(int\|string\), mixed\>&Doctrine\\Common\\Collections\\Selectable\<\(int\|string\), mixed\>, Doctrine\\Common\\Collections\\Collection given\.$#'
-			identifier: argument.type
-			count: 1
-			path: src/UnitOfWork.php
-
 		-
 			message: '#^Parameter \#5 \$invoke of method Doctrine\\ORM\\Event\\ListenersInvoker\:\:invoke\(\) expects int\<0, 7\>, int\<min, \-1\>\|int\<1, max\> given\.$#'
 			identifier: argument.type

phpstan-dbal3.neon

@@ -4,6 +4,12 @@ includes:
 
 parameters:
     reportUnmatchedIgnoredErrors: false # Some errors in the baseline only apply to DBAL 4
+    excludePaths:
+        # Compatibility shims for Collections 2 vs Collections 3
+        # These have intentional signature mismatches that cannot be resolved
+        - src/PersistentCollectionImplementation.php
+        - src/Persisters/SqlValueVisitorImplementation.php
+
     ignoreErrors:
         # Symfony cache supports passing a key prefix to the clear method.
         - '/^Method Psr\\Cache\\CacheItemPoolInterface\:\:clear\(\) invoked with 1 parameter, 0 required\.$/'
@@ -98,6 +104,17 @@ 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\.#'
@@ -149,3 +166,10 @@ parameters:
         -
             message: '~inferType.*never returns~'
             path: src/Query/ParameterTypeInferer.php
+
+        # Methods used by excluded compatibility shim traits
+        -
+            message: '#^Method .* is unused\.$#'
+            paths:
+                - src/PersistentCollection.php
+                - src/Persisters/SqlValueVisitor.php

phpstan.neon

@@ -3,6 +3,12 @@ includes:
     - phpstan-params.neon
 
 parameters:
+    excludePaths:
+        # Compatibility shims for Collections 2 vs Collections 3
+        # These have intentional signature mismatches that cannot be resolved
+        - src/PersistentCollectionImplementation.php
+        - src/Persisters/SqlValueVisitorImplementation.php
+
     ignoreErrors:
         # Symfony cache supports passing a key prefix to the clear method.
         - '/^Method Psr\\Cache\\CacheItemPoolInterface\:\:clear\(\) invoked with 1 parameter, 0 required\.$/'
@@ -12,6 +18,10 @@ 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\.$~'
@@ -50,3 +60,10 @@ parameters:
         -
             message: '#Expression on left side of \?\? is not nullable.#'
             path: src/Mapping/Driver/AttributeDriver.php
+
+        # Methods used by excluded compatibility shim traits
+        -
+            message: '#^Method .* is unused\.$#'
+            paths:
+                - src/PersistentCollection.php
+                - src/Persisters/SqlValueVisitor.php

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/Decorator/EntityManagerDecorator.php

@@ -5,7 +5,7 @@ declare(strict_types=1);
 namespace Doctrine\ORM\Decorator;
 
 use DateTimeInterface;
-use Doctrine\Common\EventManager;
+use Doctrine\Common\EventManagerInterface;
 use Doctrine\DBAL\Connection;
 use Doctrine\DBAL\LockMode;
 use Doctrine\ORM\Cache;
@@ -122,7 +122,7 @@ abstract class EntityManagerDecorator extends ObjectManagerDecorator implements
         $this->wrapped->refresh($object, $lockMode);
     }
 
-    public function getEventManager(): EventManager
+    public function getEventManager(): EventManagerInterface
     {
         return $this->wrapped->getEventManager();
     }

src/EntityManager.php

@@ -7,6 +7,7 @@ namespace Doctrine\ORM;
 use BackedEnum;
 use DateTimeInterface;
 use Doctrine\Common\EventManager;
+use Doctrine\Common\EventManagerInterface;
 use Doctrine\DBAL\Connection;
 use Doctrine\DBAL\LockMode;
 use Doctrine\ORM\Exception\EntityManagerClosed;
@@ -511,7 +512,7 @@ class EntityManager implements EntityManagerInterface
             && ! $this->unitOfWork->isScheduledForDelete($object);
     }
 
-    public function getEventManager(): EventManager
+    public function getEventManager(): EventManagerInterface
     {
         return $this->eventManager;
     }

src/EntityManagerInterface.php

@@ -5,7 +5,7 @@ declare(strict_types=1);
 namespace Doctrine\ORM;
 
 use DateTimeInterface;
-use Doctrine\Common\EventManager;
+use Doctrine\Common\EventManagerInterface;
 use Doctrine\DBAL\Connection;
 use Doctrine\DBAL\LockMode;
 use Doctrine\ORM\Exception\ORMException;
@@ -180,9 +180,9 @@ interface EntityManagerInterface extends ObjectManager
     public function lock(object $entity, LockMode|int $lockMode, DateTimeInterface|int|null $lockVersion = null): void;
 
     /**
-     * Gets the EventManager used by the EntityManager.
+     * Gets the EventManagerInterface used by the EntityManager.
      */
-    public function getEventManager(): EventManager;
+    public function getEventManager(): EventManagerInterface;
 
     /**
      * Gets the Configuration used by the EntityManager.

src/Event/ListenersInvoker.php

@@ -5,7 +5,7 @@ declare(strict_types=1);
 namespace Doctrine\ORM\Event;
 
 use Doctrine\Common\EventArgs;
-use Doctrine\Common\EventManager;
+use Doctrine\Common\EventDispatcher;
 use Doctrine\ORM\EntityManagerInterface;
 use Doctrine\ORM\Mapping\ClassMetadata;
 use Doctrine\ORM\Mapping\EntityListenerResolver;
@@ -23,13 +23,13 @@ class ListenersInvoker
     /** The Entity listener resolver. */
     private readonly EntityListenerResolver $resolver;
 
-    /** The EventManager used for dispatching events. */
-    private readonly EventManager $eventManager;
+    /** The EventDispatcher used for dispatching events. */
+    private readonly EventDispatcher $eventDispatcher;
 
     public function __construct(EntityManagerInterface $em)
     {
-        $this->eventManager = $em->getEventManager();
-        $this->resolver     = $em->getConfiguration()->getEntityListenerResolver();
+        $this->eventDispatcher = $em->getEventManager();
+        $this->resolver        = $em->getConfiguration()->getEntityListenerResolver();
     }
 
     /**
@@ -52,7 +52,7 @@ class ListenersInvoker
             $invoke |= self::INVOKE_LISTENERS;
         }
 
-        if ($this->eventManager->hasListeners($eventName)) {
+        if ($this->eventDispatcher->hasListeners($eventName)) {
             $invoke |= self::INVOKE_MANAGER;
         }
 
@@ -92,7 +92,7 @@ class ListenersInvoker
         }
 
         if ($invoke & self::INVOKE_MANAGER) {
-            $this->eventManager->dispatchEvent($eventName, $event);
+            $this->eventDispatcher->dispatchEvent($eventName, $event);
         }
     }
 }

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/LazyCriteriaCollection.php

@@ -11,8 +11,6 @@ use Doctrine\Common\Collections\ReadableCollection;
 use Doctrine\Common\Collections\Selectable;
 use Doctrine\ORM\Persisters\Entity\EntityPersister;
 
-use function assert;
-
 /**
  * A lazy collection that allows a fast count when using criteria object
  * Once count gets executed once without collection being initialized, result
@@ -26,6 +24,7 @@ use function assert;
  */
 class LazyCriteriaCollection extends AbstractLazyCollection implements Selectable
 {
+    /** @var non-negative-int|null */
     private int|null $count = null;
 
     public function __construct(
@@ -83,7 +82,6 @@ class LazyCriteriaCollection extends AbstractLazyCollection implements Selectabl
     public function matching(Criteria $criteria): ReadableCollection&Selectable
     {
         $this->initialize();
-        assert($this->collection instanceof Selectable);
 
         return $this->collection->matching($criteria);
     }

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/ClassMetadataFactory.php

@@ -4,7 +4,7 @@ declare(strict_types=1);
 
 namespace Doctrine\ORM\Mapping;
 
-use Doctrine\Common\EventManager;
+use Doctrine\Common\EventDispatcher;
 use Doctrine\DBAL\Platforms;
 use Doctrine\DBAL\Platforms\AbstractPlatform;
 use Doctrine\Deprecations\Deprecation;
@@ -55,7 +55,7 @@ class ClassMetadataFactory extends AbstractClassMetadataFactory
     private EntityManagerInterface|null $em       = null;
     private AbstractPlatform|null $targetPlatform = null;
     private MappingDriver|null $driver            = null;
-    private EventManager|null $evm                = null;
+    private EventDispatcher|null $eventDispatcher = null;
 
     /** @var mixed[] */
     private array $embeddablesActiveNesting = [];
@@ -109,20 +109,16 @@ class ClassMetadataFactory extends AbstractClassMetadataFactory
 
     protected function initialize(): void
     {
-        $this->driver      = $this->em->getConfiguration()->getMetadataDriverImpl();
-        $this->evm         = $this->em->getEventManager();
-        $this->initialized = true;
+        $this->driver          = $this->em->getConfiguration()->getMetadataDriverImpl();
+        $this->eventDispatcher = $this->em->getEventManager();
+        $this->initialized     = true;
     }
 
     protected function onNotFoundMetadata(string $className): ClassMetadata|null
     {
-        if (! $this->evm->hasListeners(Events::onClassMetadataNotFound)) {
-            return null;
-        }
-
         $eventArgs = new OnClassMetadataNotFoundEventArgs($className, $this->em);
 
-        $this->evm->dispatchEvent(Events::onClassMetadataNotFound, $eventArgs);
+        $this->eventDispatcher->dispatchEvent(Events::onClassMetadataNotFound, $eventArgs);
         $classMetadata = $eventArgs->getFoundMetadata();
         assert($classMetadata instanceof ClassMetadata || $classMetadata === null);
 
@@ -245,10 +241,10 @@ class ClassMetadataFactory extends AbstractClassMetadataFactory
         // During the following event, there may also be updates to the discriminator map as per GH-1257/GH-8402.
         // So, we must not discover the missing subclasses before that.
 
-        if ($this->evm->hasListeners(Events::loadClassMetadata)) {
-            $eventArgs = new LoadClassMetadataEventArgs($class, $this->em);
-            $this->evm->dispatchEvent(Events::loadClassMetadata, $eventArgs);
-        }
+        $this->eventDispatcher->dispatchEvent(
+            Events::loadClassMetadata,
+            new LoadClassMetadataEventArgs($class, $this->em),
+        );
 
         $this->findAbstractEntityClassesNotListedInDiscriminatorMap($class);
 

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/PersistentCollection.php

@@ -42,6 +42,8 @@ use function strtoupper;
  */
 final class PersistentCollection extends AbstractLazyCollection implements Selectable
 {
+    use PersistentCollectionImplementation;
+
     /**
      * A snapshot of the collection at the moment it was fetched from the database.
      * This is used to create a diff of the collection at commit time.
@@ -402,7 +404,7 @@ final class PersistentCollection extends AbstractLazyCollection implements Selec
         }
     }
 
-    public function add(mixed $value): bool
+    private function doAdd(mixed $value): void
     {
         $this->unwrap()->add($value);
 
@@ -411,8 +413,6 @@ final class PersistentCollection extends AbstractLazyCollection implements Selec
         if (is_object($value) && $this->em) {
             $this->getUnitOfWork()->cancelOrphanRemoval($value);
         }
-
-        return true;
     }
 
     public function offsetExists(mixed $offset): bool
@@ -504,10 +504,8 @@ final class PersistentCollection extends AbstractLazyCollection implements Selec
         $this->em = null;
     }
 
-    /**
-     * {@inheritDoc}
-     */
-    public function first()
+    /** {@inheritDoc} */
+    public function first(): mixed
     {
         if (! $this->initialized && ! $this->isDirty && $this->getMapping()->fetch === ClassMetadata::FETCH_EXTRA_LAZY) {
             $persister = $this->getUnitOfWork()->getCollectionPersister($this->getMapping());
@@ -618,7 +616,6 @@ final class PersistentCollection extends AbstractLazyCollection implements Selec
     public function unwrap(): Selectable&Collection
     {
         assert($this->collection instanceof Collection);
-        assert($this->collection instanceof Selectable);
 
         return $this->collection;
     }

src/PersistentCollectionImplementation.php

@@ -0,0 +1,37 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Doctrine\ORM;
+
+use Doctrine\Common\Collections\Criteria;
+
+use function defined;
+
+if (defined(Criteria::class . '::ASC')) {
+    // collections 2
+    /** @internal */
+    trait PersistentCollectionImplementation
+    {
+        abstract private function doAdd(mixed $value): void;
+
+        public function add(mixed $value): bool
+        {
+            $this->doAdd($value);
+
+            return true;
+        }
+    }
+} else {
+    // collections 3
+    /** @internal */
+    trait PersistentCollectionImplementation
+    {
+        abstract private function doAdd(mixed $value): void;
+
+        public function add(mixed $value): void
+        {
+            $this->doAdd($value);
+        }
+    }
+}

src/Persisters/Collection/CollectionPersister.php

@@ -25,6 +25,8 @@ interface CollectionPersister
 
     /**
      * Counts the size of this persistent collection.
+     *
+     * @return non-negative-int
      */
     public function count(PersistentCollection $collection): int;
 

src/Persisters/Collection/ManyToManyPersister.php

@@ -106,6 +106,7 @@ class ManyToManyPersister extends AbstractCollectionPersister
         );
     }
 
+    /** @return non-negative-int */
     public function count(PersistentCollection $collection): int
     {
         $conditions  = [];

src/Persisters/Collection/OneToManyPersister.php

@@ -20,6 +20,7 @@ use function array_reverse;
 use function array_values;
 use function assert;
 use function count;
+use function defined;
 use function implode;
 use function is_int;
 use function is_string;
@@ -86,10 +87,13 @@ class OneToManyPersister extends AbstractCollectionPersister
         $mapping   = $this->getMapping($collection);
         $persister = $this->uow->getEntityPersister($mapping->targetEntity);
 
+        // Doctrine Collections 2.x support
+        $criteria = defined(Criteria::class . '::ASC') ? Criteria::create(true) : Criteria::create();
+
         // only works with single id identifier entities. Will throw an
         // exception in Entity Persisters if that is not the case for the
         // 'mappedBy' field.
-        $criteria = Criteria::create(true)->where(Criteria::expr()->eq($mapping->mappedBy, $collection->getOwner()));
+        $criteria = $criteria->where(Criteria::expr()->eq($mapping->mappedBy, $collection->getOwner()));
 
         return $persister->count($criteria);
     }
@@ -118,7 +122,8 @@ class OneToManyPersister extends AbstractCollectionPersister
         // only works with single id identifier entities. Will throw an
         // exception in Entity Persisters if that is not the case for the
         // 'mappedBy' field.
-        $criteria = Criteria::create(true);
+        // Doctrine Collections 2.x support
+        $criteria = defined(Criteria::class . '::ASC') ? Criteria::create(true) : Criteria::create();
 
         $criteria->andWhere(Criteria::expr()->eq($mapping->mappedBy, $collection->getOwner()));
         $criteria->andWhere(Criteria::expr()->eq($mapping->indexBy(), $key));
@@ -135,10 +140,12 @@ class OneToManyPersister extends AbstractCollectionPersister
         $mapping   = $this->getMapping($collection);
         $persister = $this->uow->getEntityPersister($mapping->targetEntity);
 
+        // Doctrine Collections 2.x support
+        $criteria = defined(Criteria::class . '::ASC') ? Criteria::create(true) : Criteria::create();
         // only works with single id identifier entities. Will throw an
         // exception in Entity Persisters if that is not the case for the
         // 'mappedBy' field.
-        $criteria = Criteria::create(true)->where(Criteria::expr()->eq($mapping->mappedBy, $collection->getOwner()));
+        $criteria = $criteria->where(Criteria::expr()->eq($mapping->mappedBy, $collection->getOwner()));
 
         return $persister->exists($element, $criteria);
     }

src/Persisters/Entity/AbstractEntityInheritancePersister.php

@@ -40,13 +40,21 @@ abstract class AbstractEntityInheritancePersister extends BasicEntityPersister
     {
         $tableAlias   = $alias === 'r' ? '' : $alias;
         $fieldMapping = $class->fieldMappings[$field];
-        $columnAlias  = $this->getSQLColumnAlias($fieldMapping->columnName);
         $sql          = sprintf(
             '%s.%s',
             $this->getSQLTableAlias($class->name, $tableAlias),
             $this->quoteStrategy->getColumnName($field, $class, $this->platform),
         );
 
+        $columnAlias = null;
+        if ($this->currentPersisterContext->rsm->hasColumnAliasByField($alias, $field)) {
+            $columnAlias = $this->currentPersisterContext->rsm->getColumnAliasByField($alias, $field);
+        }
+
+        if ($columnAlias === null) {
+            $columnAlias = $this->getSQLColumnAlias($fieldMapping->columnName);
+        }
+
         $this->currentPersisterContext->rsm->addFieldResult($alias, $columnAlias, $field, $class->name);
 
         $type = Type::getType($fieldMapping->type);

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/Persisters/SqlValueVisitor.php

@@ -7,25 +7,21 @@ namespace Doctrine\ORM\Persisters;
 use Doctrine\Common\Collections\Expr\Comparison;
 use Doctrine\Common\Collections\Expr\CompositeExpression;
 use Doctrine\Common\Collections\Expr\ExpressionVisitor;
-use Doctrine\Common\Collections\Expr\Value;
 
 /**
  * Extract the values from a criteria/expression
  */
 class SqlValueVisitor extends ExpressionVisitor
 {
+    use SqlValueVisitorImplementation;
+
     /** @var mixed[] */
     private array $values = [];
 
     /** @var mixed[][] */
     private array $types = [];
 
-    /**
-     * Converts a comparison expression into the target query language output.
-     *
-     * {@inheritDoc}
-     */
-    public function walkComparison(Comparison $comparison)
+    private function doWalkComparison(Comparison $comparison): mixed
     {
         $value = $this->getValueFromComparison($comparison);
 
@@ -35,12 +31,7 @@ class SqlValueVisitor extends ExpressionVisitor
         return null;
     }
 
-    /**
-     * Converts a composite expression into the target query language output.
-     *
-     * {@inheritDoc}
-     */
-    public function walkCompositeExpression(CompositeExpression $expr)
+    private function doWalkCompositeExpression(CompositeExpression $expr): mixed
     {
         foreach ($expr->getExpressionList() as $child) {
             $this->dispatch($child);
@@ -49,16 +40,6 @@ class SqlValueVisitor extends ExpressionVisitor
         return null;
     }
 
-    /**
-     * Converts a value expression into the target query language part.
-     *
-     * {@inheritDoc}
-     */
-    public function walkValue(Value $value)
-    {
-        return null;
-    }
-
     /**
      * Returns the Parameters and Types necessary for matching the last visited expression.
      *

src/Persisters/SqlValueVisitorImplementation.php

@@ -0,0 +1,86 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Doctrine\ORM\Persisters;
+
+use Doctrine\Common\Collections\Criteria;
+use Doctrine\Common\Collections\Expr\Comparison;
+use Doctrine\Common\Collections\Expr\CompositeExpression;
+use Doctrine\Common\Collections\Expr\Value;
+
+use function defined;
+
+if (defined(Criteria::class . '::ASC')) {
+    // collections 2
+    /** @internal */
+    trait SqlValueVisitorImplementation
+    {
+        abstract private function doWalkComparison(Comparison $comparison): mixed;
+
+        abstract private function doWalkCompositeExpression(CompositeExpression $comparison): mixed;
+
+        /**
+         * Converts a comparison expression into the target query language output.
+         *
+         * {@inheritDoc}
+         *
+         * @phpstan-ignore missingType.return
+         */
+        public function walkComparison(Comparison $comparison)
+        {
+            return $this->doWalkComparison($comparison);
+        }
+
+        /**
+         * Converts a value expression into the target query language part.
+         *
+         * {@inheritDoc}
+         *
+         * @phpstan-ignore missingType.return
+         */
+        public function walkValue(Value $value)
+        {
+            return null;
+        }
+
+        /**
+         * Converts a composite expression into the target query language output.
+         *
+         * {@inheritDoc}
+         *
+         * @phpstan-ignore missingType.return
+         */
+        public function walkCompositeExpression(CompositeExpression $expr)
+        {
+            return $this->doWalkCompositeExpression($expr);
+        }
+    }
+} else {
+    // collections 3
+    /** @internal */
+    trait SqlValueVisitorImplementation
+    {
+        abstract private function doWalkComparison(Comparison $comparison): mixed;
+
+        abstract private function doWalkCompositeExpression(CompositeExpression $comparison): mixed;
+
+        /** Converts a comparison expression into the target query language output. */
+        public function walkComparison(Comparison $comparison): mixed
+        {
+            return $this->doWalkComparison($comparison);
+        }
+
+        /** Converts a value expression into the target query language part. */
+        public function walkValue(Value $value): mixed
+        {
+            return null;
+        }
+
+        /** Converts a composite expression into the target query language output. */
+        public function walkCompositeExpression(CompositeExpression $expr): mixed
+        {
+            return $this->doWalkCompositeExpression($expr);
+        }
+    }
+}

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/Expr/Andx.php

@@ -4,6 +4,8 @@ declare(strict_types=1);
 
 namespace Doctrine\ORM\Query\Expr;
 
+use Stringable;
+
 /**
  * Expression class for building DQL and parts.
  *
@@ -13,7 +15,7 @@ class Andx extends Composite
 {
     protected string $separator = ' AND ';
 
-    /** @var string[] */
+    /** @var list<class-string<Stringable>> */
     protected array $allowedClasses = [
         Comparison::class,
         Func::class,

src/Query/Expr/Base.php

@@ -13,6 +13,7 @@ use function get_debug_type;
 use function implode;
 use function in_array;
 use function is_array;
+use function is_object;
 use function is_string;
 use function sprintf;
 
@@ -27,7 +28,7 @@ abstract class Base implements Stringable
     protected string $separator     = ', ';
     protected string $postSeparator = ')';
 
-    /** @var list<class-string> */
+    /** @var list<class-string<Stringable>> */
     protected array $allowedClasses = [];
 
     /** @var list<string|Stringable> */
@@ -58,6 +59,8 @@ abstract class Base implements Stringable
     }
 
     /**
+     * @param string|Stringable|null $arg
+     *
      * @return $this
      *
      * @throws InvalidArgumentException
@@ -66,7 +69,8 @@ abstract class Base implements Stringable
     {
         if ($arg !== null && (! $arg instanceof self || $arg->count() > 0)) {
             // If we decide to keep Expr\Base instances, we can use this check
-            if (! is_string($arg) && ! in_array($arg::class, $this->allowedClasses, true)) {
+            // @phpstan-ignore function.alreadyNarrowedType (input validation)
+            if (! is_string($arg) && ! (is_object($arg) && in_array($arg::class, $this->allowedClasses, true))) {
                 throw new InvalidArgumentException(sprintf(
                     "Expression of type '%s' not allowed in this context.",
                     get_debug_type($arg),

src/Query/Expr/Orx.php

@@ -4,6 +4,8 @@ declare(strict_types=1);
 
 namespace Doctrine\ORM\Query\Expr;
 
+use Stringable;
+
 /**
  * Expression class for building DQL OR clauses.
  *
@@ -13,7 +15,7 @@ class Orx extends Composite
 {
     protected string $separator = ' OR ';
 
-    /** @var string[] */
+    /** @var list<class-string<Stringable>> */
     protected array $allowedClasses = [
         Comparison::class,
         Func::class,

src/Query/Expr/Select.php

@@ -4,6 +4,8 @@ declare(strict_types=1);
 
 namespace Doctrine\ORM\Query\Expr;
 
+use Stringable;
+
 /**
  * Expression class for building DQL select statements.
  *
@@ -14,7 +16,7 @@ class Select extends Base
     protected string $preSeparator  = '';
     protected string $postSeparator = '';
 
-    /** @var string[] */
+    /** @var list<class-string<Stringable>> */
     protected array $allowedClasses = [Func::class];
 
     /** @phpstan-var list<string|Func> */

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/ResultSetMapping.php

@@ -363,6 +363,10 @@ class ResultSetMapping
 
     public function hasColumnAliasByField(string $alias, string $fieldName): bool
     {
+        if (! isset($this->aliasMap[$alias])) {
+            return false;
+        }
+
         $declaringClass = $this->aliasMap[$alias];
 
         return isset($this->columnAliasMappings[$declaringClass][$alias][$fieldName]);

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 = $eventManager->getListeners($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/CursorPagination/Cursor.php

@@ -0,0 +1,100 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Doctrine\ORM\Tools\CursorPagination;
+
+use Doctrine\ORM\Tools\CursorPagination\Exception\InvalidCursor;
+use JsonException;
+
+use function base64_decode;
+use function base64_encode;
+use function json_decode;
+use function json_encode;
+use function rtrim;
+use function strtr;
+
+use const JSON_THROW_ON_ERROR;
+
+/**
+ * Represents a cursor for cursor-based pagination.
+ *
+ * A cursor contains the parameters needed to fetch the next or previous page of results.
+ */
+final class Cursor
+{
+    /** @param array<string, scalar> $parameters */
+    public function __construct(
+        private readonly array $parameters,
+        private readonly bool $isNext = true,
+    ) {
+    }
+
+    /**
+     * @internal
+     *
+     * @return array<string, scalar>
+     */
+    public function getParameters(): array
+    {
+        return $this->parameters;
+    }
+
+    /**
+     * Returns whether the cursor is for navigating to the next page.
+     */
+    public function isNext(): bool
+    {
+        return $this->isNext;
+    }
+
+    /**
+     * Returns whether the cursor is for navigating to the previous page.
+     */
+    public function isPrevious(): bool
+    {
+        return ! $this->isNext;
+    }
+
+    /** @return array<string, scalar> */
+    public function toArray(): array
+    {
+        return [...$this->parameters, '_isNext' => $this->isNext];
+    }
+
+    /**
+     * Encodes the cursor to a URL-safe Base64 JSON string.
+     */
+    public function encodeToString(): string
+    {
+        return rtrim(strtr(base64_encode((string) json_encode($this->toArray())), '+/', '-_'), '=');
+    }
+
+    /**
+     * Decodes a cursor from an encoded string.
+     *
+     * @see CursorWalker::buildCursorCondition() for the security model around cursor manipulation.
+     *
+     * @throws InvalidCursor If decoding fails.
+     */
+    public static function fromEncodedString(string $encodedString): self
+    {
+        $decoded = base64_decode(strtr($encodedString, '-_', '+/'), strict: true);
+
+        if ($decoded === false) {
+            throw new InvalidCursor($encodedString);
+        }
+
+        try {
+            $parameters = json_decode($decoded, associative: true, flags: JSON_THROW_ON_ERROR);
+        } catch (JsonException $e) {
+            throw new InvalidCursor($encodedString, $e);
+        }
+
+        $isNext = $parameters['_isNext'] ?? true;
+
+        unset($parameters['_isNext']);
+
+        return new self($parameters, $isNext);
+    }
+}

src/Tools/CursorPagination/CursorItem.php

@@ -0,0 +1,31 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Doctrine\ORM\Tools\CursorPagination;
+
+/**
+ * Represents a paginated item with its associated cursor.
+ *
+ * @template T
+ */
+final class CursorItem
+{
+    /** @param T $value */
+    public function __construct(
+        private readonly mixed $value,
+        private readonly Cursor $cursor,
+    ) {
+    }
+
+    /** @return T */
+    public function getValue(): mixed
+    {
+        return $this->value;
+    }
+
+    public function getCursor(): Cursor
+    {
+        return $this->cursor;
+    }
+}

src/Tools/CursorPagination/CursorOrderByItem.php

@@ -0,0 +1,21 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Doctrine\ORM\Tools\CursorPagination;
+
+use Doctrine\ORM\Mapping\ClassMetadata;
+use Doctrine\ORM\Query\AST\PathExpression;
+
+/** @internal */
+final class CursorOrderByItem
+{
+    /** @param ClassMetadata<object>|null $metadata */
+    public function __construct(
+        public readonly PathExpression|string $expression,
+        public readonly OrderDirection $direction,
+        public readonly string $paramKey,
+        public readonly ClassMetadata|null $metadata = null,
+    ) {
+    }
+}

src/Tools/CursorPagination/CursorPaginator.php

@@ -0,0 +1,280 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Doctrine\ORM\Tools\CursorPagination;
+
+use Countable;
+use Doctrine\Common\Collections\ArrayCollection;
+use Doctrine\Common\Collections\Collection;
+use Doctrine\DBAL\Exception;
+use Doctrine\ORM\Query;
+use Doctrine\ORM\Query\AST\PathExpression;
+use Doctrine\ORM\Query\QueryException;
+use Doctrine\ORM\QueryBuilder;
+use Doctrine\ORM\Utility\PersisterHelper;
+use IteratorAggregate;
+use LogicException;
+use Traversable;
+
+use function array_map;
+use function array_reverse;
+
+/**
+ * The cursor paginator handles cursor-based pagination for DQL queries.
+ *
+ * @template T
+ * @implements IteratorAggregate<mixed, T>
+ */
+final class CursorPaginator implements IteratorAggregate, Countable
+{
+    private readonly Query $query;
+    /** @var Collection<int, T>|null */
+    private Collection|null $items = null;
+
+    /** @var list<CursorOrderByItem>|null */
+    private array|null $orderByItems = null;
+
+    private bool $hasMore       = false;
+    private Cursor|null $cursor = null;
+
+    public function __construct(Query|QueryBuilder $query)
+    {
+        if ($query instanceof QueryBuilder) {
+            $query = $query->getQuery();
+        }
+
+        $this->query = $query;
+    }
+
+    /**
+     * Returns the query.
+     */
+    public function getQuery(): Query
+    {
+        return $this->query;
+    }
+
+    /**
+     * Paginates the query with the given limit and optional cursor.
+     *
+     * @param string|null $cursor The encoded cursor string, null or empty string for the first page.
+     * @param int         $limit  The maximum number of results to return.
+     *
+     * @return $this
+     */
+    public function paginate(string|null $cursor, int $limit): self
+    {
+        $this->cursor  = ! empty($cursor) ? Cursor::fromEncodedString($cursor) : null;
+        $shouldReverse = $this->cursor?->isPrevious() ?? false;
+
+        $query = $this->cloneQuery($this->query);
+
+        $this->appendTreeWalker($query);
+
+        $query->setHint(CursorWalker::HINT_CURSOR_REVERSE, $shouldReverse);
+        $query->setHint(CursorWalker::HINT_CURSOR_PARAMETERS, $this->cursor?->getParameters() ?? []);
+
+        $query->setMaxResults($limit + 1);
+
+        $this->items   = new ArrayCollection($query->getResult());
+        $this->hasMore = $this->items->count() > $limit;
+        $this->items   = new ArrayCollection($this->items->slice(0, $limit));
+
+        $this->orderByItems = $query->getHint(CursorWalker::HINT_CURSOR_ORDER_BY_ITEMS) ?: [];
+
+        if ($this->cursor !== null && $this->cursor->isPrevious()) {
+            $this->items = new ArrayCollection(array_reverse($this->items->toArray(), true));
+        }
+
+        return $this;
+    }
+
+    private function cloneQuery(Query $query): Query
+    {
+        $cloneQuery = clone $query;
+
+        $cloneQuery->setParameters(clone $query->getParameters());
+        $cloneQuery->setCacheable(false);
+
+        foreach ($query->getHints() as $name => $value) {
+            $cloneQuery->setHint($name, $value);
+        }
+
+        return $cloneQuery;
+    }
+
+    /**
+     * Appends a custom tree walker to the tree walkers hint.
+     */
+    private function appendTreeWalker(Query $query): void
+    {
+        $hints = $query->getHint(Query::HINT_CUSTOM_TREE_WALKERS);
+
+        if ($hints === false) {
+            $hints = [];
+        }
+
+        $hints[] = CursorWalker::class;
+        $query->setHint(Query::HINT_CUSTOM_TREE_WALKERS, $hints);
+    }
+
+    /**
+     * {@inheritDoc}
+     *
+     * @return Traversable<mixed, T>
+     */
+    public function getIterator(): Traversable
+    {
+        return $this->items->getIterator();
+    }
+
+    public function count(): int
+    {
+        return $this->items->count();
+    }
+
+    /**
+     * Returns whether there is a previous page.
+     */
+    public function hasPreviousPage(): bool
+    {
+        return $this->cursor !== null && ($this->cursor->isNext() || $this->hasMore);
+    }
+
+    /**
+     * Returns whether there is a next page.
+     */
+    public function hasNextPage(): bool
+    {
+        return $this->hasMore || ($this->cursor !== null && $this->cursor->isPrevious());
+    }
+
+    /**
+     * Returns the cursor object for the next page.
+     *
+     * @throws LogicException If there is no next page. Check {@see hasNextPage()} first.
+     */
+    public function getNextCursor(): Cursor
+    {
+        if ($this->items->isEmpty() || ! $this->hasNextPage()) {
+            throw new LogicException('There is no next page. Call hasNextPage() before getNextCursor().');
+        }
+
+        return $this->getCursorForItem($this->items->last());
+    }
+
+    /**
+     * Returns the cursor object for the previous page.
+     *
+     * @throws LogicException If there is no previous page. Check {@see hasPreviousPage()} first.
+     */
+    public function getPreviousCursor(): Cursor
+    {
+        if ($this->items->isEmpty() || ! $this->hasPreviousPage()) {
+            throw new LogicException('There is no previous page. Call hasPreviousPage() before getPreviousCursor().');
+        }
+
+        return $this->getCursorForItem($this->items->first(), false);
+    }
+
+    /**
+     * Returns the encoded cursor string for the next page.
+     *
+     * @throws LogicException If there is no next page. Check {@see hasNextPage()} first.
+     */
+    public function getNextCursorAsString(): string
+    {
+        return $this->getNextCursor()->encodeToString();
+    }
+
+    /**
+     * Returns the encoded cursor string for the previous page.
+     *
+     * @throws LogicException If there is no previous page. Check {@see hasPreviousPage()} first.
+     */
+    public function getPreviousCursorAsString(): string
+    {
+        return $this->getPreviousCursor()->encodeToString();
+    }
+
+    /**
+     * Returns the cursor for a given item.
+     *
+     * @param mixed $item   The item to create a cursor for.
+     * @param bool  $isNext Whether the cursor is for the next page.
+     *
+     * @throws Exception
+     * @throws QueryException
+     */
+    public function getCursorForItem(mixed $item, bool $isNext = true): Cursor
+    {
+        return new Cursor($this->getParametersForItem($item), $isNext);
+    }
+
+    /**
+     * Returns items wrapped with their associated cursors.
+     *
+     * @return array<int, CursorItem<T>>
+     *
+     * @throws Exception
+     * @throws QueryException
+     */
+    public function getItems(): array
+    {
+        return array_map(
+            fn (mixed $item) => new CursorItem($item, $this->getCursorForItem($item)),
+            $this->items->toArray(),
+        );
+    }
+
+    /**
+     * Returns the raw entity values.
+     *
+     * @return list<T>
+     */
+    public function getValues(): array
+    {
+        return $this->items->getValues();
+    }
+
+    /**
+     * Returns whether pagination is needed.
+     */
+    public function hasToPaginate(): bool
+    {
+        return $this->hasPreviousPage() || $this->hasNextPage();
+    }
+
+    /**
+     * @return array<string, mixed>
+     *
+     * @throws Query\QueryException
+     * @throws Exception
+     */
+    private function getParametersForItem(mixed $item): array
+    {
+        $em         = $this->query->getEntityManager();
+        $connection = $em->getConnection();
+        $metadata   = $em->getMetadataFactory()->hasMetadataFor($item::class)
+            ? $em->getClassMetadata($item::class)
+            : null;
+
+        $result = [];
+
+        foreach ($this->orderByItems as $orderByItem) {
+            if (! $orderByItem->expression instanceof PathExpression) {
+                continue;
+            }
+
+            $fieldName     = $orderByItem->expression->field;
+            $orderMetadata = $orderByItem->metadata ?? $metadata;
+            $value         = $metadata?->getFieldValue($item, $fieldName) ?? $item->$fieldName;
+            $type          = PersisterHelper::getTypeOfField($fieldName, $orderMetadata, $em)[0];
+
+            $result[$orderByItem->paramKey] = $connection->convertToDatabaseValue($value, $type);
+        }
+
+        return $result;
+    }
+}

src/Tools/CursorPagination/CursorWalker.php

@@ -0,0 +1,200 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Doctrine\ORM\Tools\CursorPagination;
+
+use Doctrine\ORM\Query\AST\ComparisonExpression;
+use Doctrine\ORM\Query\AST\ConditionalExpression;
+use Doctrine\ORM\Query\AST\ConditionalPrimary;
+use Doctrine\ORM\Query\AST\ConditionalTerm;
+use Doctrine\ORM\Query\AST\InputParameter;
+use Doctrine\ORM\Query\AST\OrderByClause;
+use Doctrine\ORM\Query\AST\OrderByItem;
+use Doctrine\ORM\Query\AST\PathExpression;
+use Doctrine\ORM\Query\AST\SelectStatement;
+use Doctrine\ORM\Query\AST\WhereClause;
+use Doctrine\ORM\Query\QueryException;
+use Doctrine\ORM\Query\TreeWalkerAdapter;
+use LogicException;
+
+use function count;
+use function str_replace;
+
+/**
+ * @internal
+ *
+ * TreeWalker for cursor-based pagination.
+ *
+ * Responsibilities:
+ * - Extract ORDER BY columns from AST
+ * - Inject WHERE conditions for cursor navigation
+ * - Reverse ORDER BY direction for previous page navigation
+ */
+class CursorWalker extends TreeWalkerAdapter
+{
+    public const HINT_CURSOR_PARAMETERS     = 'doctrine.cursor.parameters';
+    public const HINT_CURSOR_REVERSE        = 'doctrine.cursor.reverse';
+    public const HINT_CURSOR_ORDER_BY_ITEMS = 'doctrine.cursor.order_by_items';
+
+    public function walkSelectStatement(SelectStatement $selectStatement): void
+    {
+        $query            = $this->_getQuery();
+        $shouldReverse    = $query->getHint(self::HINT_CURSOR_REVERSE) === true;
+        $cursorParameters = $query->getHint(self::HINT_CURSOR_PARAMETERS);
+
+        if (! isset($selectStatement->orderByClause)) {
+            throw new LogicException('No ORDER BY clause found. Cursor pagination requires a deterministic sort order.');
+        }
+
+        $orderByItems    = [];
+        $newOrderByItems = [];
+
+        foreach ($selectStatement->orderByClause->orderByItems as $orderByItem) {
+            $direction = OrderDirection::fromOrderByItem($orderByItem, $shouldReverse);
+
+            $paramKey = $this->getParameterKey($orderByItem->expression);
+            $metadata = $orderByItem->expression instanceof PathExpression
+                ? $this->getMetadataForDqlAlias($orderByItem->expression->identificationVariable)
+                : null;
+
+            $orderByItems[] = new CursorOrderByItem($orderByItem->expression, $direction, $paramKey, $metadata);
+
+            $newItem           = new OrderByItem($orderByItem->expression);
+            $newItem->type     = $direction->value;
+            $newOrderByItems[] = $newItem;
+        }
+
+        $selectStatement->orderByClause = new OrderByClause($newOrderByItems);
+
+        $query->setHint(self::HINT_CURSOR_ORDER_BY_ITEMS, $orderByItems);
+
+        if (empty($cursorParameters)) {
+            return;
+        }
+
+        $condition = $this->buildCursorCondition($orderByItems, $cursorParameters);
+
+        if ($condition === null) {
+            return;
+        }
+
+        $conditionalPrimary                        = new ConditionalPrimary();
+        $conditionalPrimary->conditionalExpression = $condition;
+
+        if ($selectStatement->whereClause !== null) {
+            if ($selectStatement->whereClause->conditionalExpression instanceof ConditionalTerm) {
+                $selectStatement->whereClause->conditionalExpression->conditionalFactors[] = $conditionalPrimary;
+            } elseif ($selectStatement->whereClause->conditionalExpression instanceof ConditionalPrimary) {
+                $selectStatement->whereClause->conditionalExpression = new ConditionalExpression(
+                    [
+                        new ConditionalTerm(
+                            [
+                                $selectStatement->whereClause->conditionalExpression,
+                                $conditionalPrimary,
+                            ],
+                        ),
+                    ],
+                );
+            } else {
+                $existingPrimary                                     = new ConditionalPrimary();
+                $existingPrimary->conditionalExpression              = $selectStatement->whereClause->conditionalExpression;
+                $selectStatement->whereClause->conditionalExpression = new ConditionalTerm(
+                    [
+                        $existingPrimary,
+                        $conditionalPrimary,
+                    ],
+                );
+            }
+        } else {
+            $selectStatement->whereClause = new WhereClause(
+                new ConditionalExpression(
+                    [new ConditionalTerm([$conditionalPrimary])],
+                ),
+            );
+        }
+    }
+
+    /**
+     * Recursively builds a cursor condition:
+     * (col1 > :val1) OR (col1 = :val1 AND col2 > :val2) OR ...
+     *
+     * @param list<CursorOrderByItem> $orderByItems
+     * @param array<string, mixed>    $cursorParameters
+     *
+     * @throws QueryException
+     */
+    private function buildCursorCondition(array $orderByItems, array $cursorParameters, int $index = 0): ConditionalExpression|null
+    {
+        if (! isset($orderByItems[$index])) {
+            return null;
+        }
+
+        $orderByItem = $orderByItems[$index];
+        $expression  = $orderByItem->expression;
+        $direction   = $orderByItem->direction;
+        $paramKey    = $orderByItem->paramKey;
+
+        $operator = $direction->operator();
+
+        $paramName  = str_replace('.', '_', $paramKey) . '_' . $index;
+        $paramValue = $cursorParameters[$paramKey] ?? null;
+
+        // Security note: $paramKey is derived from the DQL ORDER BY AST, not from the
+        // cursor payload. A tampered cursor can only influence the *values* used as pivot
+        // points, not the columns being filtered. All values are bound via setParameter(),
+        // so SQL injection is not possible. The worst a user can do is navigate to an
+        // arbitrary position in the result set, while remaining bound by the original
+        // query's WHERE constraints.
+        $this->_getQuery()->setParameter($paramName, $paramValue);
+
+        $comparisonExpr = new ComparisonExpression(
+            $expression,
+            $operator,
+            new InputParameter(':' . $paramName),
+        );
+
+        $comparisonPrimary                              = new ConditionalPrimary();
+        $comparisonPrimary->simpleConditionalExpression = $comparisonExpr;
+
+        if ($index === count($orderByItems) - 1) {
+            return new ConditionalExpression([new ConditionalTerm([$comparisonPrimary])]);
+        }
+
+        $nextCondition = $this->buildCursorCondition($orderByItems, $cursorParameters, $index + 1);
+
+        $equalityExpr = new ComparisonExpression(
+            $expression,
+            '=',
+            new InputParameter(':' . $paramName),
+        );
+
+        $equalityPrimary                              = new ConditionalPrimary();
+        $equalityPrimary->simpleConditionalExpression = $equalityExpr;
+
+        $nextPrimary                        = new ConditionalPrimary();
+        $nextPrimary->conditionalExpression = $nextCondition;
+
+        $andPrimary                        = new ConditionalPrimary();
+        $andPrimary->conditionalExpression = new ConditionalExpression([
+            new ConditionalTerm([$equalityPrimary, $nextPrimary]),
+        ]);
+
+        return new ConditionalExpression([
+            new ConditionalTerm([$comparisonPrimary]),
+            new ConditionalTerm([$andPrimary]),
+        ]);
+    }
+
+    /**
+     * Returns the parameter key for the given expression.
+     */
+    private function getParameterKey(mixed $expression): string
+    {
+        if ($expression instanceof PathExpression) {
+            return $expression->identificationVariable . '.' . $expression->field;
+        }
+
+        return (string) $expression;
+    }
+}

src/Tools/CursorPagination/Exception/InvalidCursor.php

@@ -0,0 +1,24 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Doctrine\ORM\Tools\CursorPagination\Exception;
+
+use InvalidArgumentException;
+use Throwable;
+
+use function sprintf;
+
+final class InvalidCursor extends InvalidArgumentException
+{
+    public function __construct(string $cursor, Throwable|null $previous = null)
+    {
+        parent::__construct(
+            sprintf(
+                'The cursor "%s" could not be decoded.',
+                $cursor,
+            ),
+            previous: $previous,
+        );
+    }
+}

src/Tools/CursorPagination/OrderDirection.php

@@ -0,0 +1,37 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Doctrine\ORM\Tools\CursorPagination;
+
+use Doctrine\ORM\Query\AST\OrderByItem;
+
+/** @internal */
+enum OrderDirection: string
+{
+    case Ascending  = 'ASC';
+    case Descending = 'DESC';
+
+    public static function fromOrderByItem(OrderByItem $item, bool $reverse = false): self
+    {
+        $direction = $item->isAsc() ? self::Ascending : self::Descending;
+
+        return $reverse ? $direction->reversed() : $direction;
+    }
+
+    public function operator(): string
+    {
+        return match ($this) {
+            self::Ascending  => '>',
+            self::Descending => '<',
+        };
+    }
+
+    public function reversed(): self
+    {
+        return match ($this) {
+            self::Ascending  => self::Descending,
+            self::Descending => self::Ascending,
+        };
+    }
+}

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;
@@ -382,21 +389,17 @@ class SchemaTool
                 }
             }
 
-            if ($eventManager->hasListeners(ToolEvents::postGenerateSchemaTable)) {
-                $eventManager->dispatchEvent(
-                    ToolEvents::postGenerateSchemaTable,
-                    new GenerateSchemaTableEventArgs($class, $schema, $table),
-                );
-            }
-        }
-
-        if ($eventManager->hasListeners(ToolEvents::postGenerateSchema)) {
             $eventManager->dispatchEvent(
-                ToolEvents::postGenerateSchema,
-                new GenerateSchemaEventArgs($this->em, $schema),
+                ToolEvents::postGenerateSchemaTable,
+                new GenerateSchemaTableEventArgs($class, $schema, $table),
             );
         }
 
+        $eventManager->dispatchEvent(
+            ToolEvents::postGenerateSchema,
+            new GenerateSchemaEventArgs($this->em, $schema),
+        );
+
         return $schema;
     }
 
@@ -478,7 +481,9 @@ class SchemaTool
             $options['scale'] = $mapping->scale;
         }
 
+        /** @phpstan-ignore property.deprecated */
         if (isset($mapping->default)) {
+            /** @phpstan-ignore property.deprecated */
             $options['default'] = $mapping->default;
         }
 
@@ -489,6 +494,64 @@ 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 +1072,7 @@ class SchemaTool
     {
         return $asset instanceof NamedObject
             ? $asset->getObjectName()->toString()
-            // DBAL < 4.4
+            // @phpstan-ignore method.deprecated (DBAL < 4.4)
             : $asset->getName();
     }
 }

src/UnitOfWork.php

@@ -8,7 +8,7 @@ use BackedEnum;
 use DateTimeInterface;
 use Doctrine\Common\Collections\ArrayCollection;
 use Doctrine\Common\Collections\Collection;
-use Doctrine\Common\EventManager;
+use Doctrine\Common\EventDispatcher;
 use Doctrine\DBAL;
 use Doctrine\DBAL\Connections\PrimaryReadReplicaConnection;
 use Doctrine\DBAL\LockMode;
@@ -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;
@@ -260,9 +261,9 @@ class UnitOfWork implements PropertyChangedListener
     private array $collectionPersisters = [];
 
     /**
-     * The EventManager used for dispatching events.
+     * The EventDispatcher used for dispatching events.
      */
-    private readonly EventManager $evm;
+    private readonly EventDispatcher $eventDispatcher;
 
     /**
      * The ListenersInvoker used for dispatching events.
@@ -313,7 +314,7 @@ class UnitOfWork implements PropertyChangedListener
     public function __construct(
         private readonly EntityManagerInterface $em,
     ) {
-        $this->evm                      = $em->getEventManager();
+        $this->eventDispatcher          = $em->getEventManager();
         $this->listenersInvoker         = new ListenersInvoker($em);
         $this->hasCache                 = $em->getConfiguration()->isSecondLevelCacheEnabled();
         $this->identifierFlattener      = new IdentifierFlattener($this, $em->getMetadataFactory());
@@ -343,10 +344,7 @@ class UnitOfWork implements PropertyChangedListener
             $connection->ensureConnectedToPrimary();
         }
 
-        // Raise preFlush
-        if ($this->evm->hasListeners(Events::preFlush)) {
-            $this->evm->dispatchEvent(Events::preFlush, new PreFlushEventArgs($this->em));
-        }
+        $this->dispatchPreFlushEvent();
 
         // Compute changes done since last commit.
         $this->computeChangeSets();
@@ -377,8 +375,7 @@ class UnitOfWork implements PropertyChangedListener
 
         $this->dispatchOnFlushEvent();
 
-        $conn = $this->em->getConnection();
-        $conn->beginTransaction();
+        $connection->beginTransaction();
 
         $successful = false;
 
@@ -429,7 +426,7 @@ class UnitOfWork implements PropertyChangedListener
 
             $commitFailed = false;
             try {
-                if ($conn->commit() === false) {
+                if ($connection->commit() === false) {
                     $commitFailed = true;
                 }
             } catch (DBAL\Exception $e) {
@@ -445,8 +442,8 @@ class UnitOfWork implements PropertyChangedListener
             if (! $successful) {
                 $this->em->close();
 
-                if ($conn->isTransactionActive()) {
-                    $conn->rollBack();
+                if ($connection->isTransactionActive()) {
+                    $connection->rollBack();
                 }
 
                 $this->afterTransactionRolledBack();
@@ -2298,9 +2295,7 @@ class UnitOfWork implements PropertyChangedListener
         $this->eagerLoadingCollections          =
         $this->orphanRemovals                   = [];
 
-        if ($this->evm->hasListeners(Events::onClear)) {
-            $this->evm->dispatchEvent(Events::onClear, new OnClearEventArgs($this->em));
-        }
+        $this->eventDispatcher->dispatchEvent(Events::onClear, new OnClearEventArgs($this->em));
     }
 
     /**
@@ -2594,8 +2589,14 @@ 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);
@@ -3140,18 +3141,19 @@ class UnitOfWork implements PropertyChangedListener
         }
     }
 
+    private function dispatchPreFlushEvent(): void
+    {
+        $this->eventDispatcher->dispatchEvent(Events::preFlush, new PreFlushEventArgs($this->em));
+    }
+
     private function dispatchOnFlushEvent(): void
     {
-        if ($this->evm->hasListeners(Events::onFlush)) {
-            $this->evm->dispatchEvent(Events::onFlush, new OnFlushEventArgs($this->em));
-        }
+        $this->eventDispatcher->dispatchEvent(Events::onFlush, new OnFlushEventArgs($this->em));
     }
 
     private function dispatchPostFlushEvent(): void
     {
-        if ($this->evm->hasListeners(Events::postFlush)) {
-            $this->evm->dispatchEvent(Events::postFlush, new PostFlushEventArgs($this->em));
-        }
+        $this->eventDispatcher->dispatchEvent(Events::postFlush, new PostFlushEventArgs($this->em));
     }
 
     /**

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);
+    }
+}