Make sure MemcachedAdapter is supported before tring to use it (#9574 )

Fixing :doc: link (#9569 )
Adding PHP attributes (#9555 )
2026-03-24 06:52:09 +01:00 · 2022-03-09 16:23:58 +01:00 · 2022-03-08 22:31:56 +01:00 · 2022-03-08 01:40:01 +01:00 · 2022-03-03 22:27:51 +01:00 · 2022-03-03 22:12:04 +01:00
523 changed files with 5583 additions and 3915 deletions
--- a/.doctrine-project.json
+++ b/.doctrine-project.json
@@ -12,21 +12,27 @@
            "upcoming": true
        },
        {
-            "name": "2.11",
-            "branchName": "2.11.x",
-            "slug": "2.11",
+            "name": "2.12",
+            "branchName": "2.12.x",
+            "slug": "2.12",
            "upcoming": true
        },
        {
-            "name": "2.10",
-            "branchName": "2.10.x",
-            "slug": "2.10",
+            "name": "2.11",
+            "branchName": "2.11.x",
+            "slug": "2.11",
            "current": true,
            "aliases": [
                "current",
                "stable"
            ]
        },
+        {
+            "name": "2.10",
+            "branchName": "2.10.x",
+            "slug": "2.10",
+            "maintained": false
+        },
        {
            "name": "2.9",
            "branchName": "2.9.x",
--- a/.github/workflows/coding-standard.yml
+++ b/.github/workflows/coding-standard.yml
@@ -10,6 +10,6 @@ on:

 jobs:
  coding-standards:
-    uses: "doctrine/.github/.github/workflows/coding-standards.yml@1.1.1"
+    uses: "doctrine/.github/.github/workflows/coding-standards.yml@1.4.1"
    with:
-      php-version: "7.4"
+      php-version: "8.1"
--- a/.github/workflows/continuous-integration.yml
+++ b/.github/workflows/continuous-integration.yml
@@ -30,7 +30,7 @@ jobs:
          - php-version: "8.0"
            dbal-version: "2.13"
          - php-version: "8.1"
-            dbal-version: "3.2@dev"
+            dbal-version: "3@dev"

    steps:
      - name: "Checkout"
@@ -78,16 +78,16 @@ jobs:
    strategy:
      matrix:
        php-version:
-          - "7.4"
+          - "8.1"
        dbal-version:
          - "default"
        postgres-version:
          - "9.6"
-          - "13"
+          - "14"
        include:
          - php-version: "8.0"
            dbal-version: "2.13"
-            postgres-version: "13"
+            postgres-version: "14"

    services:
      postgres:
@@ -139,18 +139,18 @@ jobs:
    strategy:
      matrix:
        php-version:
-          - "7.4"
+          - "8.1"
        dbal-version:
          - "default"
        mariadb-version:
-          - "10.5"
+          - "10.6"
        extension:
          - "mysqli"
          - "pdo_mysql"
        include:
          - php-version: "8.0"
            dbal-version: "2.13"
-            mariadb-version: "10.5"
+            mariadb-version: "10.6"
            extension: "pdo_mysql"

    services:
@@ -205,7 +205,7 @@ jobs:
    strategy:
      matrix:
        php-version:
-          - "7.4"
+          - "8.1"
        dbal-version:
          - "default"
        mysql-version:
--- a/.github/workflows/release-on-milestone-closed.yml
+++ b/.github/workflows/release-on-milestone-closed.yml
@@ -7,9 +7,8 @@ on:

 jobs:
  release:
-    uses: "doctrine/.github/.github/workflows/release-on-milestone-closed.yml@1.1.1"
+    uses: "doctrine/.github/.github/workflows/release-on-milestone-closed.yml@1.4.1"
    secrets:
-      GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
      GIT_AUTHOR_EMAIL: ${{ secrets.GIT_AUTHOR_EMAIL }}
      GIT_AUTHOR_NAME: ${{ secrets.GIT_AUTHOR_NAME }}
      ORGANIZATION_ADMIN_TOKEN: ${{ secrets.ORGANIZATION_ADMIN_TOKEN }}
--- a/.github/workflows/static-analysis.yml
+++ b/.github/workflows/static-analysis.yml
@@ -18,7 +18,7 @@ jobs:
      fail-fast: false
      matrix:
        php-version:
-          - "8.0"
+          - "8.1"
        dbal-version:
          - "default"
          - "2.13"
@@ -58,10 +58,7 @@ jobs:
      fail-fast: false
      matrix:
        php-version:
-          - "8.0"
-        dbal-version:
-          - "default"
-          - "2.13"
+          - "8.1"

    steps:
      - name: "Checkout code"
@@ -73,10 +70,6 @@ jobs:
          coverage: "none"
          php-version: "${{ matrix.php-version }}"

-      - name: "Require specific DBAL version"
-        run: "composer require doctrine/dbal ^${{ matrix.dbal-version }} --no-update"
-        if: "${{ matrix.dbal-version != 'default' }}"
-
      - name: "Install dependencies with Composer"
        uses: "ramsey/composer-install@v1"
        with:
--- a/.gitignore
+++ b/.gitignore
@@ -15,5 +15,5 @@ vendor/
 /tests/Doctrine/Performance/history.db
 /.phpcs-cache
 composer.lock
-/.phpunit.result.cache
+.phpunit.result.cache
 /*.phpunit.xml
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
-| [3.0.x][3.0] | [2.11.x][2.11] | [2.10.x][2.10] |
+| [3.0.x][3.0] | [2.12.x][2.12] | [2.11.x][2.11] |
 |:----------------:|:----------------:|:----------:|
-| [![Build status][3.0 image]][3.0] | [![Build status][2.11 image]][2.11] | [![Build status][2.10 image]][2.10] |
-| [![Coverage Status][3.0 coverage image]][3.0 coverage]| [![Coverage Status][2.11 coverage image]][2.11 coverage] | [![Coverage Status][2.10 coverage image]][2.10 coverage]  |
+| [![Build status][3.0 image]][3.0] | [![Build status][2.12 image]][2.12] | [![Build status][2.11 image]][2.11] |
+| [![Coverage Status][3.0 coverage image]][3.0 coverage]| [![Coverage Status][2.12 coverage image]][2.12 coverage] | [![Coverage Status][2.11 coverage image]][2.11 coverage]  |

 Doctrine 2 is an object-relational mapper (ORM) for PHP 7.1+ that provides transparent persistence
 for PHP objects. It sits on top of a powerful database abstraction layer (DBAL). One of its key features
@@ -20,10 +20,10 @@ without requiring unnecessary code duplication.
  [3.0]: https://github.com/doctrine/orm/tree/3.0.x
  [3.0 coverage image]: https://codecov.io/gh/doctrine/orm/branch/3.0.x/graph/badge.svg
  [3.0 coverage]: https://codecov.io/gh/doctrine/orm/branch/3.0.x
-  [2.10 image]: https://github.com/doctrine/orm/actions/workflows/continuous-integration.yml/badge.svg?branch=2.10.x
-  [2.10]: https://github.com/doctrine/orm/tree/2.10.x
-  [2.10 coverage image]: https://codecov.io/gh/doctrine/orm/branch/2.10.x/graph/badge.svg
-  [2.10 coverage]: https://codecov.io/gh/doctrine/orm/branch/2.10.x
+  [2.12 image]: https://github.com/doctrine/orm/actions/workflows/continuous-integration.yml/badge.svg?branch=2.12.x
+  [2.12]: https://github.com/doctrine/orm/tree/2.12.x
+  [2.12 coverage image]: https://codecov.io/gh/doctrine/orm/branch/2.12.x/graph/badge.svg
+  [2.12 coverage]: https://codecov.io/gh/doctrine/orm/branch/2.12.x
  [2.11 image]: https://github.com/doctrine/orm/actions/workflows/continuous-integration.yml/badge.svg?branch=2.11.x
  [2.11]: https://github.com/doctrine/orm/tree/2.11.x
  [2.11 coverage image]: https://codecov.io/gh/doctrine/orm/branch/2.11.x/graph/badge.svg
--- a/UPGRADE.md
+++ b/UPGRADE.md
@@ -1,3 +1,56 @@
+# Upgrade to 2.11
+
+## Rename `AbstractIdGenerator::generate()` to `generateId()`
+
+Implementations of `AbstractIdGenerator` have to override the method
+`generateId()` without calling the parent implementation. Not doing so is
+deprecated. Calling `generate()` on any `AbstractIdGenerator` implementation
+is deprecated.
+
+## PSR-6-based second level cache
+
+The second level cache has been reworked to consume a PSR-6 cache. Using a
+Doctrine Cache instance is deprecated.
+
+* `DefaultCacheFactory`: The constructor expects a PSR-6 cache item pool as
+  second argument now.
+* `DefaultMultiGetRegion`: This class is deprecated in favor of `DefaultRegion`.
+* `DefaultRegion`:
+  * The constructor expects a PSR-6 cache item pool as second argument now.
+  * The protected `$cache` property is deprecated.
+  * The properties `$name` and `$lifetime` as well as the constant
+   `REGION_KEY_SEPARATOR` and the method `getCacheEntryKey()` are flagged as
+   `@internal` now. They all will become `private` in 3.0.
+  * The method `getCache()` is deprecated without replacement.
+
+## Deprecated: `Doctrine\ORM\Mapping\Driver\PHPDriver`
+
+Use `StaticPHPDriver` instead when you want to programmatically configure
+entity metadata.
+
+You can convert mappings with the `orm:convert-mapping` command or more simply
+in this case, `include` the metadata file from the `loadMetadata` static method
+used by the `StaticPHPDriver`.
+
+## Deprecated: `Setup::registerAutoloadDirectory()`
+
+Use Composer's autoloader instead.
+
+## Deprecated: `AbstractHydrator::hydrateRow()`
+
+Following the deprecation of the method `AbstractHydrator::iterate()`, the
+method `hydrateRow()` has been deprecated as well.
+
+## Deprecate cache settings inspection
+
+Doctrine does not provide its own cache implementation anymore and relies on
+the PSR-6 standard instead. As a consequence, we cannot determine anymore
+whether a given cache adapter is suitable for a production environment.
+Because of that, functionality that aims to do so has been deprecated:
+
+* `Configuration::ensureProductionSettings()`
+* the `orm:ensure-production-settings` console command
+
 # Upgrade to 2.10

 ## BC Break: `UnitOfWork` now relies on SPL object IDs, not hashes
@@ -182,8 +235,7 @@ These methods have been deprecated:
 ## Deprecated `Doctrine\ORM\Version`

 The `Doctrine\ORM\Version` class is now deprecated and will be removed in Doctrine ORM 3.0:
-please refrain from checking the ORM version at runtime or use
-[ocramius/package-versions](https://github.com/Ocramius/PackageVersions/).
+please refrain from checking the ORM version at runtime or use Composer's [runtime API](https://getcomposer.org/doc/07-runtime.md#knowing-whether-package-x-is-installed-in-version-y).

 ## Deprecated `EntityManager#merge()` method

--- a/ci/github/phpunit/mysqli.xml
+++ b/ci/github/phpunit/mysqli.xml
@@ -1,12 +1,14 @@
 <?xml version="1.0" encoding="utf-8"?>
 <phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:noNamespaceSchemaLocation="../../vendor/phpunit/phpunit/phpunit.xsd"
+         xsi:noNamespaceSchemaLocation="../../../vendor/phpunit/phpunit/phpunit.xsd"
         colors="true"
         beStrictAboutOutputDuringTests="true"
         beStrictAboutTodoAnnotatedTests="true"
         failOnRisky="true"
+         convertDeprecationsToExceptions="true"
 >
    <php>
+        <ini name="error_reporting" value="-1" />
        <var name="db_driver" value="mysqli"/>
        <var name="db_host" value="127.0.0.1" />
        <var name="db_port" value="3306"/>
--- a/ci/github/phpunit/pdo_mysql.xml
+++ b/ci/github/phpunit/pdo_mysql.xml
@@ -1,12 +1,14 @@
 <?xml version="1.0" encoding="utf-8"?>
 <phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:noNamespaceSchemaLocation="../../vendor/phpunit/phpunit/phpunit.xsd"
+         xsi:noNamespaceSchemaLocation="../../../vendor/phpunit/phpunit/phpunit.xsd"
         colors="true"
         beStrictAboutOutputDuringTests="true"
         beStrictAboutTodoAnnotatedTests="true"
         failOnRisky="true"
+         convertDeprecationsToExceptions="true"
 >
    <php>
+        <ini name="error_reporting" value="-1" />
        <var name="db_driver" value="pdo_mysql"/>
        <var name="db_host" value="127.0.0.1" />
        <var name="db_port" value="3306"/>
--- a/ci/github/phpunit/pdo_pgsql.xml
+++ b/ci/github/phpunit/pdo_pgsql.xml
@@ -1,12 +1,14 @@
 <?xml version="1.0" encoding="utf-8"?>
 <phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:noNamespaceSchemaLocation="../../vendor/phpunit/phpunit/phpunit.xsd"
+         xsi:noNamespaceSchemaLocation="../../../vendor/phpunit/phpunit/phpunit.xsd"
         colors="true"
         beStrictAboutOutputDuringTests="true"
         beStrictAboutTodoAnnotatedTests="true"
         failOnRisky="true"
+         convertDeprecationsToExceptions="true"
 >
    <php>
+        <ini name="error_reporting" value="-1" />
        <var name="db_driver" value="pdo_pgsql"/>
        <var name="db_host" value="localhost" />
        <var name="db_user" value="postgres" />
--- a/ci/github/phpunit/sqlite.xml
+++ b/ci/github/phpunit/sqlite.xml
@@ -1,12 +1,14 @@
 <?xml version="1.0" encoding="utf-8"?>
 <phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:noNamespaceSchemaLocation="../../vendor/phpunit/phpunit/phpunit.xsd"
+         xsi:noNamespaceSchemaLocation="../../../vendor/phpunit/phpunit/phpunit.xsd"
         colors="true"
         beStrictAboutOutputDuringTests="true"
         beStrictAboutTodoAnnotatedTests="true"
         failOnRisky="true"
+         convertDeprecationsToExceptions="true"
 >
    <php>
+        <ini name="error_reporting" value="-1" />
        <!-- use an in-memory sqlite database -->
        <var name="db_driver" value="pdo_sqlite"/>
        <var name="db_memory" value="true"/>
--- a/composer.json
+++ b/composer.json
@@ -13,17 +13,20 @@
        {"name": "Marco Pivetta", "email": "ocramius@gmail.com"}
    ],
    "config": {
+        "allow-plugins": {
+            "composer/package-versions-deprecated": true,
+            "dealerdirect/phpcodesniffer-composer-installer": true
+        },
        "sort-packages": true
    },
    "require": {
-        "php": "^7.1 ||^8.0",
+        "php": "^7.1 || ^8.0",
+        "composer-runtime-api": "^2",
        "ext-ctype": "*",
-        "ext-pdo": "*",
-        "composer/package-versions-deprecated": "^1.8",
        "doctrine/cache": "^1.12.1 || ^2.1.1",
        "doctrine/collections": "^1.5",
        "doctrine/common": "^3.0.3",
-        "doctrine/dbal": "^2.13.1 || ^3.1.1",
+        "doctrine/dbal": "^2.13.1 || ^3.2",
        "doctrine/deprecations": "^0.5.3",
        "doctrine/event-manager": "^1.1",
        "doctrine/inflector": "^1.4 || ^2.0",
@@ -39,12 +42,12 @@
        "doctrine/annotations": "^1.13",
        "doctrine/coding-standard": "^9.0",
        "phpbench/phpbench": "^0.16.10 || ^1.0",
-        "phpstan/phpstan": "1.2.0",
+        "phpstan/phpstan": "1.4.6",
        "phpunit/phpunit": "^7.5 || ^8.5 || ^9.4",
-        "squizlabs/php_codesniffer": "3.6.1",
-        "symfony/cache": "^4.4 || ^5.2",
+        "squizlabs/php_codesniffer": "3.6.2",
+        "symfony/cache": "^4.4 || ^5.4 || ^6.0",
        "symfony/yaml": "^3.4 || ^4.0 || ^5.0 || ^6.0",
-        "vimeo/psalm": "4.13.1"
+        "vimeo/psalm": "4.22.0"
    },
    "conflict": {
        "doctrine/annotations": "<1.13 || >= 2.0"
--- a/docs/en/cookbook/accessing-private-properties-of-the-same-class-from-different-instance.rst
+++ b/docs/en/cookbook/accessing-private-properties-of-the-same-class-from-different-instance.rst
@@ -0,0 +1,74 @@
+Accessing private/protected properties/methods of the same class from different instance
+========================================================================================
+
+.. sectionauthor:: Michael Olsavsky (olsavmic)
+
+As explained in the :doc:`restrictions for entity classes in the manual <../reference/architecture>`,
+it is dangerous to access private/protected properties of different entity instance of the same class because of lazy loading.
+
+The proxy instance that's injected instead of the real entity may not be initialized yet
+and therefore not contain expected data which may result in unexpected behavior.
+That's a limitation of current proxy implementation - only public methods automatically initialize proxies.
+
+It is usually preferable to use a public interface to manipulate the object from outside the `$this`
+context but it may not be convenient in some cases. The following example shows how to do it safely.
+
+Safely accessing private properties from different instance of the same class
+-----------------------------------------------------------------------------
+
+To safely access private property of different instance of the same class, make sure to initialise
+the proxy before use manually as follows:
+
+.. code-block:: php
+
+    <?php
+
+    use Doctrine\Common\Proxy\Proxy;
+    use Doctrine\ORM\Mapping as ORM;
+
+    /**
+     * @ORM\Entity
+     */
+    class Entity
+    {
+        // ...
+
+        /**
+         * @ORM\ManyToOne(targetEntity="Entity")
+         * @ORM\JoinColumn(nullable=false)
+         */
+        private self $parent;
+
+        /**
+         * @ORM\Column(type="string", nullable=false)
+         */
+        private string $name;
+
+        // ...
+
+        public function doSomethingWithParent()
+        {
+            // Always initializing the proxy before use
+            if ($this->parent instanceof Proxy) {
+                $this->parent->__load();
+            }
+
+            // Accessing the `$this->parent->name` property without loading the proxy first
+            // may throw error in case the Proxy has not been initialized yet.
+            $this->parent->name;
+        }
+
+        public function doSomethingWithAnotherInstance(self $instance)
+        {
+            // Always initializing the proxy before use
+            if ($instance instanceof Proxy) {
+                $instance->__load();
+            }
+
+            // Accessing the `$instance->name` property without loading the proxy first
+            // may throw error in case the Proxy has not been initialized yet.
+            $instance->name;
+        }
+
+        // ...
+    }
--- a/docs/en/cookbook/advanced-field-value-conversion-using-custom-mapping-types.rst
+++ b/docs/en/cookbook/advanced-field-value-conversion-using-custom-mapping-types.rst
@@ -4,7 +4,7 @@ Advanced field value conversion using custom mapping types
 .. sectionauthor:: Jan Sorgalla <jsorgalla@googlemail.com>

 When creating entities, you sometimes have the need to transform field values
-before they are saved to the database. In Doctrine you can use Custom Mapping 
+before they are saved to the database. In Doctrine you can use Custom Mapping
 Types to solve this (see: :ref:`reference-basic-mapping-custom-mapping-types`).

 There are several ways to achieve this: converting the value inside the Type
@@ -15,7 +15,7 @@ type `Point <https://dev.mysql.com/doc/refman/8.0/en/gis-class-point.html>`_.

 The ``Point`` type is part of the `Spatial extension <https://dev.mysql.com/doc/refman/8.0/en/spatial-extensions.html>`_
 of MySQL and enables you to store a single location in a coordinate space by
-using x and y coordinates. You can use the Point type to store a 
+using x and y coordinates. You can use the Point type to store a
 longitude/latitude pair to represent a geographic location.

 The entity
@@ -29,9 +29,9 @@ The entity class:
 .. code-block:: php

    <?php
-    
+
    namespace Geo\Entity;
- 
+
    /**
     * @Entity
     */
@@ -84,7 +84,7 @@ The entity class:
        }
    }

-We use the custom type ``point`` in the ``@Column``  docblock annotation of the 
+We use the custom type ``point`` in the ``@Column``  docblock annotation of the
 ``$point`` field. We will create this custom mapping type in the next chapter.

 The point class:
@@ -92,7 +92,7 @@ The point class:
 .. code-block:: php

    <?php
-    
+
    namespace Geo\ValueObject;

    class Point
@@ -196,7 +196,7 @@ The format of the string representation format is called
 `Well-known text (WKT) <https://en.wikipedia.org/wiki/Well-known_text>`_.
 The advantage of this format is, that it is both human readable and parsable by MySQL.

-Internally, MySQL stores geometry values in a binary format that is not 
+Internally, MySQL stores geometry values in a binary format that is not
 identical to the WKT format. So, we need to let MySQL transform the WKT
 representation into its internal format.

@@ -210,13 +210,13 @@ which convert WKT strings to and from the internal format of MySQL.

 .. note::

-    When using DQL queries, the ``convertToPHPValueSQL`` and  
+    When using DQL queries, the ``convertToPHPValueSQL`` and
    ``convertToDatabaseValueSQL`` methods only apply to identification variables
-    and path expressions in SELECT clauses. Expressions in  WHERE clauses are 
+    and path expressions in SELECT clauses. Expressions in  WHERE clauses are
    **not** wrapped!

    If you want to use Point values in WHERE clauses, you have to implement a
-    :doc:`user defined function <dql-user-defined-functions>` for 
+    :doc:`user defined function <dql-user-defined-functions>` for
    ``PointFromText``.

 Example usage
@@ -252,5 +252,5 @@ Example usage
    $query = $em->createQuery("SELECT l FROM Geo\Entity\Location l WHERE l.address = '1600 Amphitheatre Parkway, Mountain View, CA'");
    $location = $query->getSingleResult();

-    /* @var Geo\ValueObject\Point */
+    /** @var Geo\ValueObject\Point */
    $point = $location->getPoint();
--- a/docs/en/cookbook/dql-custom-walkers.rst
+++ b/docs/en/cookbook/dql-custom-walkers.rst
@@ -88,7 +88,7 @@ API would look for this use-case:
    $pageNum = 1;
    $query = $em->createQuery($dql);
    $query->setFirstResult( ($pageNum-1) * 20)->setMaxResults(20);
-    
+
    $totalResults = Paginate::count($query);
    $results = $query->getResult();

@@ -101,12 +101,12 @@ The ``Paginate::count(Query $query)`` looks like:
    {
        static public function count(Query $query)
        {
-            /* @var $countQuery Query */
+            /** @var Query $countQuery */
            $countQuery = clone $query;
-    
+
            $countQuery->setHint(Query::HINT_CUSTOM_TREE_WALKERS, array('DoctrineExtensions\Paginate\CountSqlWalker'));
            $countQuery->setFirstResult(null)->setMaxResults(null);
-    
+
            return $countQuery->getSingleScalarResult();
        }
    }
@@ -137,13 +137,13 @@ implementation is:
                    break;
                }
            }
-    
+
            $pathExpression = new PathExpression(
                PathExpression::TYPE_STATE_FIELD | PathExpression::TYPE_SINGLE_VALUED_ASSOCIATION, $parentName,
                $parent['metadata']->getSingleIdentifierFieldName()
            );
            $pathExpression->type = PathExpression::TYPE_STATE_FIELD;
-    
+
            $AST->selectClause->selectExpressions = array(
                new SelectExpression(
                    new AggregateExpression('count', $pathExpression, true), null
@@ -196,7 +196,7 @@ modify the generation of the SELECT clause, adding the
        public function walkSelectClause($selectClause)
        {
            $sql = parent::walkSelectClause($selectClause);
-    
+
            if ($this->getQuery()->getHint('mysqlWalker.sqlNoCache') === true) {
                if ($selectClause->isDistinct) {
                    $sql = str_replace('SELECT DISTINCT', 'SELECT DISTINCT SQL_NO_CACHE', $sql);
@@ -204,7 +204,7 @@ modify the generation of the SELECT clause, adding the
                    $sql = str_replace('SELECT', 'SELECT SQL_NO_CACHE', $sql);
                }
            }
-    
+
            return $sql;
        }
    }
--- a/docs/en/cookbook/dql-user-defined-functions.rst
+++ b/docs/en/cookbook/dql-user-defined-functions.rst
@@ -45,7 +45,7 @@ configuration:
    $config->addCustomStringFunction($name, $class);
    $config->addCustomNumericFunction($name, $class);
    $config->addCustomDatetimeFunction($name, $class);
-    
+
    $em = EntityManager::create($dbParams, $config);

 The ``$name`` is the name the function will be referred to in the
@@ -96,7 +96,7 @@ discuss it step by step:
        // (1)
        public $firstDateExpression = null;
        public $secondDateExpression = null;
-    
+
        public function parse(\Doctrine\ORM\Query\Parser $parser)
        {
            $parser->match(Lexer::T_IDENTIFIER); // (2)
@@ -106,7 +106,7 @@ discuss it step by step:
            $this->secondDateExpression = $parser->ArithmeticPrimary(); // (6)
            $parser->match(Lexer::T_CLOSE_PARENTHESIS); // (3)
        }
-    
+
        public function getSql(\Doctrine\ORM\Query\SqlWalker $sqlWalker)
        {
            return 'DATEDIFF(' .
@@ -180,28 +180,28 @@ I'll skip the blah and show the code for this function:
        public $firstDateExpression = null;
        public $intervalExpression = null;
        public $unit = null;
-    
+
        public function parse(\Doctrine\ORM\Query\Parser $parser)
        {
            $parser->match(Lexer::T_IDENTIFIER);
            $parser->match(Lexer::T_OPEN_PARENTHESIS);
-    
+
            $this->firstDateExpression = $parser->ArithmeticPrimary();
-    
+
            $parser->match(Lexer::T_COMMA);
            $parser->match(Lexer::T_IDENTIFIER);
-    
+
            $this->intervalExpression = $parser->ArithmeticPrimary();
-    
+
            $parser->match(Lexer::T_IDENTIFIER);
-    
-            /* @var $lexer Lexer */
+
+            /** @var Lexer $lexer */
            $lexer = $parser->getLexer();
            $this->unit = $lexer->token['value'];
-    
+
            $parser->match(Lexer::T_CLOSE_PARENTHESIS);
        }
-    
+
        public function getSql(\Doctrine\ORM\Query\SqlWalker $sqlWalker)
        {
            return 'DATE_ADD(' .
--- a/docs/en/reference/advanced-configuration.rst
+++ b/docs/en/reference/advanced-configuration.rst
@@ -195,10 +195,7 @@ SQL Logger (***Optional***)

 Gets or sets the logger to use for logging all SQL statements
 executed by Doctrine. The logger class must implement the
-``Doctrine\DBAL\Logging\SQLLogger`` interface. A simple default
-implementation that logs to the standard output using ``echo`` and
-``var_dump`` can be found at
-``Doctrine\DBAL\Logging\EchoSQLLogger``.
+deprecated ``Doctrine\DBAL\Logging\SQLLogger`` interface.

 Auto-generating Proxy Classes (***OPTIONAL***)
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@@ -440,6 +437,19 @@ That will be available for all entities without a custom repository class.
 The default value is ``Doctrine\ORM\EntityRepository``.
 Any repository class must be a subclass of EntityRepository otherwise you got an ORMException

+Ignoring entities (***OPTIONAL***)
+-----------------------------------
+
+Specifies the Entity FQCNs to ignore.
+SchemaTool will then skip these (e.g. when comparing schemas).
+
+.. code-block:: php
+
+    <?php
+    $config->setSchemaIgnoreClasses([$fqcn]);
+    $config->getSchemaIgnoreClasses();
+
+
 Setting up the Console
 ----------------------

--- a/docs/en/reference/annotations-reference.rst
+++ b/docs/en/reference/annotations-reference.rst
@@ -123,6 +123,18 @@ Optional attributes:

 -  **nullable**: Determines if NULL values allowed for this column. If not specified, default value is false.

+-  **insertable**: Boolean value to determine if the column should be
+   included when inserting a new row into the underlying entities table. 
+   If not specified, default value is true.
+
+-  **updatable**: Boolean value to determine if the column should be
+   included when updating the row of the underlying entities table.
+   If not specified, default value is true.
+
+-  **generated**: An enum with the possible values ALWAYS, INSERT, NEVER.  Is
+   used after an INSERT or UPDATE statement to determine if the database
+   generated this value and it needs to be fetched using a SELECT statement.
+
 -  **options**: Array of additional options:

   -  ``default``: The default value to set for the column if no value
@@ -193,6 +205,13 @@ Examples:
     */
    protected $loginCount;

+    /**
+     * Generated column
+     * @Column(type="string", name="user_fullname", insertable=false, updatable=false)
+     * MySQL example: full_name char(41) GENERATED ALWAYS AS (concat(firstname,' ',lastname)),
+     */
+    protected $fullname;
+
 .. _annref_column_result:

@ColumnResult
--- a/docs/en/reference/architecture.rst
+++ b/docs/en/reference/architecture.rst
@@ -82,9 +82,13 @@ be any regular PHP class observing the following restrictions:
   :doc:`do so safely <../cookbook/implementing-wakeup-or-clone>`.
 -  An entity class must not implement ``__wakeup`` or
   :doc:`do so safely <../cookbook/implementing-wakeup-or-clone>`.
-   Also consider implementing
-   `Serializable <https://php.net/manual/en/class.serializable.php>`_
-   instead.
+   You can also consider implementing
+   `Serializable <https://php.net/manual/en/class.serializable.php>`_,
+   but be aware that it is deprecated since PHP 8.1. We do not recommend its usage.
+-  PHP 7.4 introduces :doc:`the new magic method <https://php.net/manual/en/language.oop5.magic.php#object.unserialize>`
+   ``__unserialize``, which changes the execution priority between
+   ``__wakeup`` and itself when used. This can cause unexpected behaviour in
+   an Entity.
 -  Any two entity classes in a class hierarchy that inherit
   directly or indirectly from one another must not have a mapped
   property with the same name. That is, if B inherits from A then B
@@ -93,6 +97,7 @@ be any regular PHP class observing the following restrictions:
 -  An entity cannot make use of func_get_args() to implement variable parameters.
   Generated proxies do not support this for performance reasons and your code might
   actually fail to work when violating this restriction.
+-  Entity cannot access private/protected properties/methods of another entity of the same class or :doc:`do so safely <../cookbook/accessing-private-properties-of-the-same-class-from-different-instance>`.

 Entities support inheritance, polymorphic associations, and
 polymorphic queries. Both abstract and concrete classes can be
@@ -161,7 +166,8 @@ possible for ``__sleep`` to return names of private properties in
 parent classes. On the other hand it is not a solution for proxy
 objects to implement ``Serializable`` because Serializable does not
 work well with any potential cyclic object references (at least we
-did not find a way yet, if you did, please contact us).
+did not find a way yet, if you did, please contact us). The
+``Serializable`` interface is also deprecated beginning with PHP 8.1.

 The EntityManager
 ~~~~~~~~~~~~~~~~~
--- a/docs/en/reference/attributes-reference.rst
+++ b/docs/en/reference/attributes-reference.rst
@@ -10,6 +10,8 @@ annotation metadata supported since the first version 2.0.
 Index
 -----

+-  :ref:`#[AssociationOverride] <attrref_associationoverride]`
+-  :ref:`#[AttributeOverride] <attrref_attributeoverride]`
 -  :ref:`#[Column] <attrref_column>`
 -  :ref:`#[Cache] <attrref_cache>`
 -  :ref:`#[ChangeTrackingPolicy <attrref_changetrackingpolicy>`
@@ -49,6 +51,93 @@ Index
 Reference
 ---------

+.. _attrref_associationoverride:
+
+#[AssociationOverride]
+~~~~~~~~~~~~~~~~~~~~~~
+
+In an inheritance hierarchy this attribute allows to override the
+assocation mapping definitions of the parent mappings. It needs to be nested
+within a ``#[AssociationOverrides]`` on the class level.
+
+Required parameters:
+
+-  **name**: Name of the association mapping to overwrite.
+
+Optional parameters:
+
+-  **joinColumns**: A list of nested ``#[JoinColumn]`` declarations.
+-  **joinTable**: A nested ``#[JoinTable]`` declaration in case of a many-to-many overwrite.
+-  **inversedBy**: The name of the inversedBy field on the target entity side.
+-  **fetch**: The fetch strategy, one of: EAGER, LAZY, EXTRA_LAZY.
+
+Examples:
+
+.. code-block:: php
+
+    <?php
+    use Doctrine\ORM\Mapping\AssociationOverride;
+    use Doctrine\ORM\Mapping\AssociationOverrides;
+    use Doctrine\ORM\Mapping\Column;
+    use Doctrine\ORM\Mapping\Entity;
+
+    #[AssociationOverrides([
+        new AssociationOverride(
+            name: "groups",
+            joinTable: new JoinTable(
+                name: "ddc964_users_admingroups",
+            ),
+            joinColumns: [new JoinColumn(name: "adminuser_id")],
+            inverseJoinColumns: [new JoinColumn(name: "admingroup_id")]
+        ),
+        new AssociationOverride(
+            name: "address",
+            joinColumns: [new JoinColumn(name: "adminaddress_id", referencedColumnName: "id")]
+        )
+    ])]
+    class DDC964Admin extends DDC964User
+    {
+    }
+
+.. _attrref_attributeoverride:
+
+#[AttributeOverride]
+~~~~~~~~~~~~~~~~~~~~
+
+In an inheritance hierarchy this attribute allows to override the
+field mapping definitions of the parent mappings. It needs to be nested
+within a ``#[AttributeOverrides]`` on the class level.
+
+Required parameters:
+
+-  **name**: Name of the association mapping to overwrite.
+-  **column**: A nested ``#[Column]`` attribute with the overwritten field settings.
+
+Examples:
+
+.. code-block:: php
+
+    <?php
+    use Doctrine\ORM\Mapping\AttributeOverride;
+    use Doctrine\ORM\Mapping\AttributeOverrides;
+    use Doctrine\ORM\Mapping\Column;
+    use Doctrine\ORM\Mapping\Entity;
+
+    #[Entity]
+    #[AttributeOverrides([
+        new AttributeOverride(
+            name: "id",
+            column: new Column(name: "guest_id", type: "integer", length: 140)
+        ),
+        new AttributeOverride(
+            name: "name",
+            column: new Column(name: "guest_name", nullable: false, unique: true, length: 240)
+        )]
+    )]
+    class DDC964Guest extends DDC964User
+    {
+    }
+
 .. _attrref_column:

 #[Column]
@@ -59,12 +148,12 @@ inside the instance variables PHP DocBlock comment. Any value hold
 inside this variable will be saved to and loaded from the database
 as part of the lifecycle of the instance variables entity-class.

-Required attributes:
+Required parameters:

 -  **type**: Name of the DBAL Type which does the conversion between PHP
   and Database representation.

-Optional attributes:
+Optional parameters:

 -  **name**: By default the property name is used for the database
   column name also, however the ``name`` attribute allows you to
@@ -89,6 +178,18 @@ Optional attributes:
 -  **nullable**: Determines if NULL values allowed for this column.
    If not specified, default value is ``false``.

+-  **insertable**: Boolean value to determine if the column should be
+   included when inserting a new row into the underlying entities table. 
+   If not specified, default value is true.
+
+-  **updatable**: Boolean value to determine if the column should be
+   included when updating the row of the underlying entities table.
+   If not specified, default value is true.
+
+-  **generated**: An enum with the possible values ALWAYS, INSERT, NEVER.  Is
+   used after an INSERT or UPDATE statement to determine if the database
+   generated this value and it needs to be fetched using a SELECT statement.
+
 -  **options**: Array of additional options:

   -  ``default``: The default value to set for the column if no value
@@ -159,13 +260,22 @@ Examples:
    )]
    protected $loginCount;

+    // MySQL example: full_name char(41) GENERATED ALWAYS AS (concat(firstname,' ',lastname)),
+    #[Column(
+        type: "string",
+        name: "user_fullname",
+        insertable: false,
+        updatable: false
+    )]
+    protected $fullname;
+
 .. _attrref_cache:

 #[Cache]
 ~~~~~~~~
 Add caching strategy to a root entity or a collection.

-Optional attributes:
+Optional parameters:

 -  **usage**: One of ``READ_ONLY``, ``READ_WRITE`` or ``NONSTRICT_READ_WRITE``, By default this is ``READ_ONLY``.
 -  **region**: An specific region name
@@ -210,7 +320,7 @@ Example:

 This attribute allows you to specify a user-provided class to generate identifiers. This attribute only works when both :ref:`#[Id] <attrref_id>` and :ref:`#[GeneratedValue(strategy: "CUSTOM")] <attrref_generatedvalue>` are specified.

-Required attributes:
+Required parameters:

 -  **class**: name of the class which should extend Doctrine\ORM\Id\AbstractIdGenerator

@@ -244,13 +354,13 @@ actually instantiated as.
 If this attribute is not specified, the discriminator column defaults
 to a string column of length 255 called ``dtype``.

-Required attributes:
+Required parameters:


 -  **name**: The column name of the discriminator. This name is also
   used during Array hydration as key to specify the class-name.

-Optional attributes:
+Optional parameters:


 -  **type**: By default this is string.
@@ -319,7 +429,7 @@ attribute to establish the relationship between the two classes.
 The embedded attribute is required on an entity's member variable,
 in order to specify that it is an embedded class.

-Required attributes:
+Required parameters:

 -  **class**: The embeddable class

@@ -331,7 +441,7 @@ Required attributes:
 Required attribute to mark a PHP class as an entity. Doctrine manages
 the persistence of all classes marked as entities.

-Optional attributes:
+Optional parameters:

 -  **repositoryClass**: Specifies the FQCN of a subclass of the
   ``EntityRepository``. Use of repositories for entities is encouraged to keep
@@ -368,7 +478,7 @@ conjunction with #[Id].
 If this attribute is not specified with ``#[Id]`` the ``NONE`` strategy is
 used as default.

-Optional attributes:
+Optional parameters:

 -  **strategy**: Set the name of the identifier generation strategy.
   Valid values are ``AUTO``, ``SEQUENCE``, ``IDENTITY``, ``UUID``
@@ -424,14 +534,14 @@ Attribute is used on the entity-class level. It provides a hint to the SchemaToo
 generate a database index on the specified table columns. It only
 has meaning in the ``SchemaTool`` schema generation context.

-Required attributes:
+Required parameters:

 -  **name**: Name of the Index
 -  **fields**: Array of fields. Exactly one of **fields, columns** is required.
 -  **columns**: Array of columns. Exactly one of **fields, columns** is required.


-Optional attributes:
+Optional parameters:

 -  **options**: Array of platform specific options:

@@ -460,7 +570,7 @@ Example with partial indexes:
    <?php
    use Doctrine\ORM\Mapping\Index;

-    #[Index(name: "search_idx", columns: {"category"},
+    #[Index(name: "search_idx", columns: ["category"],
        options: [
            "where": "((category IS NOT NULL))"
        ]
@@ -518,7 +628,7 @@ Examples:
    #[Entity]
    #[InheritanceType("SINGLE_TABLE")]
    #[DiscriminatorColumn(name: "discr", type: "string")]
-    #[DiscriminatorMap({"person" = "Person", "employee" = "Employee"})]
+    #[DiscriminatorMap(["person" => "Person", "employee" => "Employee"])]
    class Person
    {
        // ...
@@ -527,7 +637,7 @@ Examples:
    #[Entity]
    #[InheritanceType("JOINED")]
    #[DiscriminatorColumn(name: "discr", type: "string")]
-    #[DiscriminatorMap({"person" = "Person", "employee" = "Employee"})]
+    #[DiscriminatorMap(["person" => "Person", "employee" => "Employee"])]
    class Person
    {
        // ...
@@ -546,9 +656,10 @@ are missing they will be computed considering the field's name and the current

 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.
+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 attributes:
+Optional parameters:

 -  **name**: Column name that holds the foreign key identifier for
   this relation. In the context of ``#[JoinTable]`` it specifies the column
@@ -596,7 +707,7 @@ details of the database join table. If you do not specify
 using the affected table and the column names.

 A notable difference to the annotation metadata support, ``#[JoinColumn]``
-and ``#[InverseJoinColumn]`` are specified at the property level and are not
+and ``#[InverseJoinColumn]`` can be specified at the property level and are not
 nested within the ``#[JoinTable]`` attribute.

 Required attribute:
@@ -623,14 +734,14 @@ Example:
 Defines that the annotated instance variable holds a reference that
 describes a many-to-one relationship between two entities.

-Required attributes:
+Required parameters:


 -  **targetEntity**: FQCN of the referenced target entity. Can be the
   unqualified class name if both classes are in the same namespace.
   *IMPORTANT:* No leading backslash!

-Optional attributes:
+Optional parameters:


 -  **cascade**: Cascade Option
@@ -659,14 +770,14 @@ additional, optional attribute that has reasonable default
 configuration values using the table and names of the two related
 entities.

-Required attributes:
+Required parameters:


 -  **targetEntity**: FQCN of the referenced target entity. Can be the
   unqualified class name if both classes are in the same namespace.
   *IMPORTANT:* No leading backslash!

-Optional attributes:
+Optional parameters:


 -  **mappedBy**: This option specifies the property name on the
@@ -720,7 +831,7 @@ The ``#[MappedSuperclass]`` attribute cannot be used in conjunction with
 ``#[Entity]``. See the Inheritance Mapping section for
 :doc:`more details on the restrictions of mapped superclasses <inheritance-mapping>`.

-Optional attributes:
+Optional parameters:

 -  **repositoryClass**: Specifies the FQCN of a subclass of the EntityRepository.
   That will be inherited for all subclasses of that Mapped Superclass.
@@ -756,13 +867,13 @@ be specified. When no
 :ref:`#[JoinColumn] <attrref_joincolumn>` is specified it defaults to using the target entity table and
 primary key column names and the current naming strategy to determine a name for the join column.

-Required attributes:
+Required parameters:

 -  **targetEntity**: FQCN of the referenced target entity. Can be the
   unqualified class name if both classes are in the same namespace.
   *IMPORTANT:* No leading backslash!

-Optional attributes:
+Optional parameters:

 -  **cascade**: Cascade Option
 -  **fetch**: One of LAZY or EAGER
@@ -786,13 +897,13 @@ Example:
 #[OneToMany]
 ~~~~~~~~~~~~

-Required attributes:
+Required parameters:

 -  **targetEntity**: FQCN of the referenced target entity. Can be the
   unqualified class name if both classes are in the same namespace.
   *IMPORTANT:* No leading backslash!

-Optional attributes:
+Optional parameters:

 -  **cascade**: Cascade Option
 -  **orphanRemoval**: Boolean that specifies if orphans, inverse
@@ -916,11 +1027,11 @@ For use with ``#[GeneratedValue(strategy: "SEQUENCE")]`` this
 attribute allows to specify details about the sequence, such as
 the increment size and initial values of the sequence.

-Required attributes:
+Required parameters:

 -  **sequenceName**: Name of the sequence

-Optional attributes:
+Optional parameters:

 -  **allocationSize**: Increment the sequence by the allocation size
   when its fetched. A value larger than 1 allows optimization for
@@ -954,11 +1065,11 @@ placed on the entity-class level and is optional. If it is
 not specified the table name will default to the entity's
 unqualified classname.

-Required attributes:
+Required parameters:

 -  **name**: Name of the table

-Optional attributes:
+Optional parameters:

 -  **schema**: Name of the schema the table lies in.

@@ -985,12 +1096,12 @@ generate a database unique constraint on the specified table
 columns. It only has meaning in the SchemaTool schema generation
 context.

-Required attributes:
+Required parameters:

 -  **name**: Name of the Index
 -  **columns**: Array of columns.

-Optional attributes:
+Optional parameters:

 -  **options**: Array of platform specific options:

--- a/docs/en/reference/basic-mapping.rst
+++ b/docs/en/reference/basic-mapping.rst
@@ -14,17 +14,11 @@ After working through this guide you should know:
 Mapping of associations will be covered in the next chapter on
 :doc:`Association Mapping <association-mapping>`.

-Guide Assumptions
-----------------
-
-You should have already :doc:`installed and configure <configuration>`
-Doctrine.
-
 Creating Classes for the Database
 ---------------------------------

 Every PHP object that you want to save in the database using Doctrine
-is called an "Entity". The term "Entity" describes objects
+is called an *Entity*. The term "Entity" describes objects
 that have an identity over many independent requests. This identity is
 usually achieved by assigning a unique identifier to an entity.
 In this tutorial the following ``Message`` PHP class will serve as the
@@ -50,11 +44,11 @@ that describes your entity.
 Doctrine provides several different ways to specify object-relational
 mapping metadata:

-  :doc:`Docblock Annotations <annotations-reference>`
 -  :doc:`Attributes <attributes-reference>`
+-  :doc:`Docblock Annotations <annotations-reference>`
 -  :doc:`XML <xml-mapping>`
-  :doc:`YAML <yaml-mapping>`
 -  :doc:`PHP code <php-mapping>`
+-  :doc:`YAML <yaml-mapping>` (deprecated and will be removed in ``doctrine/orm`` 3.0.)

 This manual will usually show mapping metadata via docblock annotations, though
 many examples also show the equivalent configuration in YAML and XML.
@@ -62,8 +56,8 @@ many examples also show the equivalent configuration in YAML and XML.
 .. note::

    All metadata drivers perform equally. Once the metadata of a class has been
-    read from the source (annotations, xml or yaml) it is stored in an instance
-    of the ``Doctrine\ORM\Mapping\ClassMetadata`` class and these instances are
+    read from the source (attributes, annotations, XML, etc.) it is stored in an instance
+    of the ``Doctrine\ORM\Mapping\ClassMetadata`` class which are
    stored in the metadata cache.  If you're not using a metadata cache (not
    recommended!) then the XML driver is the fastest.

@@ -71,9 +65,22 @@ Marking our ``Message`` class as an entity for Doctrine is straightforward:

 .. configuration-block::

-    .. code-block:: php
+    .. code-block:: attribute

        <?php
+        use Doctrine\ORM\Mapping\Entity;
+
+        #[Entity]
+        class Message
+        {
+            // ...
+        }
+
+    .. code-block:: annotation
+
+        <?php
+        use Doctrine\ORM\Mapping\Entity;
+
        /** @Entity */
        class Message
        {
@@ -100,9 +107,25 @@ You can change this by configuring information about the table:

 .. configuration-block::

-    .. code-block:: php
+    .. code-block:: attribute

        <?php
+        use Doctrine\ORM\Mapping\Entity;
+        use Doctrine\ORM\Mapping\Table;
+
+        #[Entity]
+        #[Table(name: 'message')]
+        class Message
+        {
+            // ...
+        }
+
+    .. code-block:: annotation
+
+        <?php
+        use Doctrine\ORM\Mapping\Entity;
+        use Doctrine\ORM\Mapping\Table;
+
        /**
         * @Entity
         * @Table(name="message")
@@ -132,19 +155,38 @@ Now the class ``Message`` will be saved and fetched from the table ``message``.
 Property Mapping
 ----------------

-The next step after marking a PHP class as an entity is mapping its properties
-to columns in a table.
+The next step is mapping its properties to columns in the table.

-To configure a property use the ``@Column`` docblock annotation. The ``type``
+To configure a property use the ``Column`` docblock annotation. The ``type``
 attribute specifies the :ref:`Doctrine Mapping Type <reference-mapping-types>`
 to use for the field. If the type is not specified, ``string`` is used as the
 default.

 .. configuration-block::

-    .. code-block:: php
+    .. code-block:: attribute

        <?php
+        use Doctrine\ORM\Mapping\Column;
+        use Doctrine\DBAL\Types\Types;
+
+        #[Entity]
+        class Message
+        {
+            #[Column(type: Types::INTEGER)]
+            private $id;
+            #[Column(length: 140)]
+            private $text;
+            #[Column(name: 'posted_at', type: Types::DATETIME)]
+            private $postedAt;
+        }
+
+    .. code-block:: annotation
+
+        <?php
+        use Doctrine\ORM\Mapping\Entity;
+        use Doctrine\ORM\Mapping\Column;
+
        /** @Entity */
        class Message
        {
@@ -180,36 +222,34 @@ default.
              column: posted_at

 When we don't explicitly specify a column name via the ``name`` option, Doctrine
-assumes the field name is also the column name. This means that:
+assumes the field name is also the column name. So in this example:

 * the ``id`` property will map to the column ``id`` using the type ``integer``;
 * the ``text`` property will map to the column ``text`` with the default mapping type ``string``;
 * the ``postedAt`` property will map to the ``posted_at`` column with the ``datetime`` type.

-The Column annotation has some more attributes. Here is a complete
-list:
+Here is a complete list of ``Column``s attributes (all optional):

- ``type``: (optional, defaults to 'string') The mapping type to
-  use for the column.
- ``name``: (optional, defaults to field name) The name of the
-  column in the database.
- ``length``: (optional, default 255) The length of the column in
-  the database. (Applies only if a string-valued column is used).
- ``unique``: (optional, default FALSE) Whether the column is a
-  unique key.
- ``nullable``: (optional, default FALSE) Whether the database
-  column is nullable.
- ``precision``: (optional, default 0) The precision for a decimal
-  (exact numeric) column (applies only for decimal column),
+- ``type`` (default: 'string'): The mapping type to use for the column.
+- ``name`` (default: name of property): The name of the column in the database.
+- ``length`` (default: 255): The length of the column in the database.
+  Applies only if a string-valued column is used.
+- ``unique`` (default: ``false``): Whether the column is a unique key.
+- ``nullable`` (default: ``false``): Whether the column is nullable.
+- ``insertable`` (default: ``true``): Whether the column should be inserted.
+- ``updatable`` (default: ``true``): Whether the column should be updated.
+- ``enumType`` (requires PHP 8.1 and ``doctrine/orm`` 2.11): The PHP enum class name to convert the database value into.
+- ``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.
- ``scale``: (optional, default 0) The scale for a decimal (exact
+- ``scale`` (default: 0): The scale for a decimal (exact
  numeric) column (applies only for decimal column), which represents
  the number of digits to the right of the decimal point and must
-  not be greater than *precision*.
- ``columnDefinition``: (optional) Allows to define a custom
+  not be greater than ``precision``.
+- ``columnDefinition``: Allows to define a custom
  DDL snippet that is used to create the column. Warning: This normally
-  confuses the SchemaTool to always detect the column as changed.
- ``options``: (optional) Key-value pairs of options that get passed
+  confuses the :doc:`SchemaTool <tools>` to always detect the column as changed.
+- ``options``: Key-value pairs of options that get passed
  to the underlying database platform when generating DDL statements.

 .. _reference-php-mapping-types:
@@ -217,21 +257,35 @@ list:
 PHP Types Mapping
 _________________

-Since version 2.9 Doctrine can determine usable defaults from property types
-on entity classes. When property type is nullable this has no effect on
-``nullable`` Column attribute at the moment for backwards compatibility
-reasons.
+.. versionadded:: 2.9

-Additionally, Doctrine will map PHP types to ``type`` attribute as follows:
+The column types can be inferred automatically from PHP's property types.
+However, when the property type is nullable this has no effect on the ``nullable`` Column attribute.

- ``DateInterval``: ``dateinterval``
- ``DateTime``: ``datetime``
- ``DateTimeImmutable``: ``datetime_immutable``
- ``array``: ``json``
- ``bool``: ``boolean``
- ``float``: ``float``
- ``int``: ``integer``
- ``string`` or any other type: ``string``
+These are the "automatic" mapping rules:
+
+-----------------------+-------------------------------+
+| PHP property type     | Doctrine column type          |
+=======================+===============================+
+| ``DateInterval``      | ``Types::DATEINTERVAL``       |
+-----------------------+-------------------------------+
+| ``DateTime``          | ``Types::DATETIME_MUTABLE``   |
+-----------------------+-------------------------------+
+| ``DateTimeImmutable`` | ``Types::DATETIME_IMMUTABLE`` |
+-----------------------+-------------------------------+
+| ``array``             | ``Types::JSON``               |
+-----------------------+-------------------------------+
+| ``bool``              | ``Types::BOOLEAN``            |
+-----------------------+-------------------------------+
+| ``float``             | ``Types::FLOAT``              |
+-----------------------+-------------------------------+
+| ``int``               | ``Types::INTEGER``            |
+-----------------------+-------------------------------+
+| Any other type        | ``Types::STRING``             |
+-----------------------+-------------------------------+
+
+As of version 2.11 Doctrine can also automatically map typed properties using a
+PHP 8.1 enum to set the right ``type`` and ``enumType``.

 .. _reference-mapping-types:

--- a/docs/en/reference/dql-doctrine-query-language.rst
+++ b/docs/en/reference/dql-doctrine-query-language.rst
@@ -670,11 +670,23 @@ The same restrictions apply for the reference of related entities.

 .. warning::

-    DQL DELETE statements are ported directly into a
-    Database DELETE statement and therefore bypass any events and checks for the
-    version column if they are not explicitly added to the WHERE clause
-    of the query. Additionally Deletes of specified entities are *NOT*
-    cascaded to related entities even if specified in the metadata.
+    DQL DELETE statements are ported directly into an SQL DELETE statement.
+    Therefore, some limitations apply:
+    
+    - Lifecycle events for the affected entities are not executed.
+    - A cascading ``remove`` operation (as indicated e. g. by ``cascade={"remove"}`` 
+      or ``cascade={"all"}`` in the mapping configuration) is not being performed 
+      for associated entities. You can rely on database level cascade operations by
+      configuring each join column with the ``onDelete`` option.
+    - Checks for the version column are bypassed if they are not explicitly added
+      to the WHERE clause of the query.
+      
+    When you rely on one of these features, one option is to use the 
+    ``EntityManager#remove($entity)`` method. This, however, is costly performance-wise: 
+    It means collections and related entities are fetched into memory 
+    (even if they are marked as lazy). Pulling object graphs into memory on cascade
+    can cause considerable performance overhead, especially when the cascaded collections
+    are large. Make sure to weigh the benefits and downsides.

 Comments in queries
 -------------------
@@ -718,7 +730,7 @@ clauses:
 -  ``SQRT(q)`` - Return the square-root of q.
 -  ``SUBSTRING(str, start [, length])`` - Return substring of given
   string.
-  ``TRIM([LEADING \| TRAILING \| BOTH] ['trchar' FROM] str)`` - Trim
+-  ``TRIM([LEADING | TRAILING | BOTH] ['trchar' FROM] str)`` - Trim
   the string by the given trim char, defaults to whitespaces.
 -  ``UPPER(str)`` - Return the upper-case of the given string.
 -  ``DATE_ADD(date, value, unit)`` - Add the given time to a given date.
@@ -1712,7 +1724,7 @@ Literal Values
 .. code-block:: php

    Literal     ::= string | char | integer | float | boolean
-    InParameter ::= Literal | InputParameter
+    InParameter ::= ArithmeticExpression | InputParameter

 Input Parameter
 ~~~~~~~~~~~~~~~
--- a/docs/en/reference/events.rst
+++ b/docs/en/reference/events.rst
@@ -121,52 +121,55 @@ Now you can test the ``$eventSubscriber`` instance to see if the
        echo 'pre foo invoked!';
    }

-Registering Events
-~~~~~~~~~~~~~~~~~~
+Registering Event Handlers
+~~~~~~~~~~~~~~~~~~~~~~~~~~

-There are two ways to register an event:
+There are two ways to set up an event handler:

-* *All events* can be registered by calling ``$eventManager->addEventListener()``
-or ``eventManager->addEventSubscriber()``, see
+* For *all events* you can create a Lifecycle Event Listener or Subscriber class and register
+it by calling ``$eventManager->addEventListener()`` or ``eventManager->addEventSubscriber()``,
+see
 :ref:`Listening and subscribing to Lifecycle Events<listening-and-subscribing-to-lifecycle-events>`
-* *Lifecycle Callbacks* can also be registered in the entity mapping (annotation, attribute, etc.), 
-see :ref:`Lifecycle Callbacks<lifecycle-callbacks>`
+* For *some events* (see table below), you can create a *Lifecycle Callback* method in the
+entity, see :ref:`Lifecycle Callbacks<lifecycle-callbacks>`.
+
+.. _reference-events-lifecycle-events:

 Events Overview
 ---------------

-+-----------------------------------------------------------------+-----------------------+-----------+
-| Event                                                           | Dispatched by         | Lifecycle |
-|                                                                 |                       | Callback  |
-+=================================================================+=======================+===========+
-| :ref:`preRemove<reference-events-pre-remove>`                   | ``$em->remove()``     | Yes       |
-+-----------------------------------------------------------------+-----------------------+-----------+
-| :ref:`postRemove<reference-events-post-update-remove-persist>`  | ``$em->flush()``      | Yes       |
-+-----------------------------------------------------------------+-----------------------+-----------+
-| :ref:`prePersist<reference-events-pre-persist>`                 | ``$em->persist()``    | Yes       |
-|                                                                 | on *initial* persist  |           |
-+-----------------------------------------------------------------+-----------------------+-----------+
-| :ref:`postPersist<reference-events-post-update-remove-persist>` | ``$em->flush()``      | Yes       |
-+-----------------------------------------------------------------+-----------------------+-----------+
-| :ref:`preUpdate<reference-events-pre-update>`                   | ``$em->flush()``      | Yes       |
-+-----------------------------------------------------------------+-----------------------+-----------+
-| :ref:`postUpdate<reference-events-post-update-remove-persist>`  | ``$em->flush()``      | Yes       |
-+-----------------------------------------------------------------+-----------------------+-----------+
-| :ref:`postLoad<reference-events-post-load>`                     | Loading from database | Yes       |
-+-----------------------------------------------------------------+-----------------------+-----------+
-| :ref:`loadClassMetadata<reference-events-load-class-metadata>`  | Loading of mapping    | No        |
-|                                                                 | metadata              |           |
-+-----------------------------------------------------------------+-----------------------+-----------+
-| ``onClassMetadataNotFound``                                     | ``MappingException``  | No        |
-+-----------------------------------------------------------------+-----------------------+-----------+
-| :ref:`preFlush<reference-events-pre-flush>`                     | ``$em->flush()``      | Yes       |
-+-----------------------------------------------------------------+-----------------------+-----------+
-| :ref:`onFlush<reference-events-on-flush>`                       | ``$em->flush()``      | No        |
-+-----------------------------------------------------------------+-----------------------+-----------+
-| :ref:`postFlush<reference-events-post-flush>`                   | ``$em->flush()``      | No        |
-+-----------------------------------------------------------------+-----------------------+-----------+
-| ``onClear``                                                     | ``$em->clear()``      | No        |
-+-----------------------------------------------------------------+-----------------------+-----------+
+-----------------------------------------------------------------+-----------------------+-----------+-------------------------------------+
+| Event                                                           | Dispatched by         | Lifecycle | Passed                              |
+|                                                                 |                       | Callback  | Argument                            |
+=================================================================+=======================+===========+=====================================+
+| :ref:`preRemove<reference-events-pre-remove>`                   | ``$em->remove()``     | Yes       | `_LifecycleEventArgs`_              |
+-----------------------------------------------------------------+-----------------------+-----------+-------------------------------------+
+| :ref:`postRemove<reference-events-post-update-remove-persist>`  | ``$em->flush()``      | Yes       | `_LifecycleEventArgs`_              |
+-----------------------------------------------------------------+-----------------------+-----------+-------------------------------------+
+| :ref:`prePersist<reference-events-pre-persist>`                 | ``$em->persist()``    | Yes       | `_LifecycleEventArgs`_              |
+|                                                                 | on *initial* persist  |           |                                     |
+-----------------------------------------------------------------+-----------------------+-----------+-------------------------------------+
+| :ref:`postPersist<reference-events-post-update-remove-persist>` | ``$em->flush()``      | Yes       | `_LifecycleEventArgs`_              |
+-----------------------------------------------------------------+-----------------------+-----------+-------------------------------------+
+| :ref:`preUpdate<reference-events-pre-update>`                   | ``$em->flush()``      | Yes       | `_PreUpdateEventArgs`_              |
+-----------------------------------------------------------------+-----------------------+-----------+-------------------------------------+
+| :ref:`postUpdate<reference-events-post-update-remove-persist>`  | ``$em->flush()``      | Yes       | `_LifecycleEventArgs`_              |
+-----------------------------------------------------------------+-----------------------+-----------+-------------------------------------+
+| :ref:`postLoad<reference-events-post-load>`                     | Loading from database | Yes       | `_LifecycleEventArgs`_              |
+-----------------------------------------------------------------+-----------------------+-----------+-------------------------------------+
+| :ref:`loadClassMetadata<reference-events-load-class-metadata>`  | Loading of mapping    | No        | `_LoadClassMetadataEventArgs`       |
+|                                                                 | metadata              |           |                                     |
+-----------------------------------------------------------------+-----------------------+-----------+-------------------------------------+
+| ``onClassMetadataNotFound``                                     | ``MappingException``  | No        | `_OnClassMetadataNotFoundEventArgs` |
+-----------------------------------------------------------------+-----------------------+-----------+-------------------------------------+
+| :ref:`preFlush<reference-events-pre-flush>`                     | ``$em->flush()``      | Yes       | `_PreFlushEventArgs`_               |
+-----------------------------------------------------------------+-----------------------+-----------+-------------------------------------+
+| :ref:`onFlush<reference-events-on-flush>`                       | ``$em->flush()``      | No        | `_OnFlushEventArgs`                 |
+-----------------------------------------------------------------+-----------------------+-----------+-------------------------------------+
+| :ref:`postFlush<reference-events-post-flush>`                   | ``$em->flush()``      | No        | `_PostFlushEventArgs`               |
+-----------------------------------------------------------------+-----------------------+-----------+-------------------------------------+
+| :ref:`onClear<reference-events-on-clear>`                       | ``$em->clear()``      | No        | `_OnClearEventArgs`                 |
+-----------------------------------------------------------------+-----------------------+-----------+-------------------------------------+

 Naming convention
 ~~~~~~~~~~~~~~~~~
@@ -187,94 +190,6 @@ several reasons:
 An example for a correct notation can be found in the example
 ``TestEvent`` above.

-.. _reference-events-lifecycle-events:
-
-Lifecycle Events
----------------
-
-The ``EntityManager`` and ``UnitOfWork`` classes trigger a bunch of
-events during the life-time of their registered entities.
-
-
-
-  ``preRemove`` - The ``preRemove`` event occurs for a given entity
-   before the respective ``EntityManager`` remove operation for that
-   entity is executed.  It is not called for a DQL ``DELETE`` statement.
-  ``postRemove`` - The ``postRemove`` event occurs for an entity after the
-   entity has been deleted. It will be invoked after the database
-   delete operations. It is not called for a DQL ``DELETE`` statement.
-  ``prePersist`` - The ``prePersist`` event occurs for a given entity
-   before the respective ``EntityManager`` persist operation for that
-   entity is executed. It should be noted that this event is only triggered on
-   *initial* persist of an entity (i.e. it does not trigger on future updates).
-  ``postPersist`` - The ``postPersist`` event occurs for an entity after
-   the entity has been made persistent. It will be invoked after the
-   database insert operations. Generated primary key values are
-   available in the postPersist event.
-  ``preUpdate`` - The ``preUpdate`` event occurs before the database
-   update operations to entity data. It is not called for a DQL
-   ``UPDATE`` statement nor when the computed changeset is empty.
-  ``postUpdate`` - The ``postUpdate`` event occurs after the database
-   update operations to entity data. It is not called for a DQL
-   ``UPDATE`` statement.
-  ``postLoad`` - The postLoad event occurs for an entity after the
-   entity has been loaded into the current ``EntityManager`` from the
-   database or after the refresh operation has been applied to it.
-  ``loadClassMetadata`` - The ``loadClassMetadata`` event occurs after the
-   mapping metadata for a class has been loaded from a mapping source
-   (annotations/xml/yaml). This event is not a lifecycle callback.
-  ``onClassMetadataNotFound`` - Loading class metadata for a particular
-   requested class name failed. Manipulating the given event args instance
-   allows providing fallback metadata even when no actual metadata exists
-   or could be found. This event is not a lifecycle callback.
-  ``preFlush`` - The ``preFlush`` event occurs at the very beginning of
-   a flush operation.
-  ``onFlush`` - The ``onFlush`` event occurs after the change-sets of all
-   managed entities are computed. This event is not a lifecycle
-   callback.
-  ``postFlush`` - The ``postFlush`` event occurs at the end of a flush operation. This
-   event is not a lifecycle callback.
-  ``onClear`` - The ``onClear`` event occurs when the
-   ``EntityManager#clear()`` operation is invoked, after all references
-   to entities have been removed from the unit of work. This event is not
-   a lifecycle callback.
-
-
-.. warning::
-
-    Note that, when using ``Doctrine\ORM\AbstractQuery#toIterable()``, ``postLoad``
-    events will be executed immediately after objects are being hydrated, and therefore
-    associations are not guaranteed to be initialized. It is not safe to combine
-    usage of ``Doctrine\ORM\AbstractQuery#toIterable()`` and ``postLoad`` event
-    handlers.
-
-.. warning::
-
-    Note that the ``postRemove`` event or any events triggered after an entity removal
-    can receive an uninitializable proxy in case you have configured an entity to
-    cascade remove relations. In this case, you should load yourself the proxy in
-    the associated pre event.
-
-These can be hooked into by two different types of event
-listeners:
-
-  Lifecycle Callbacks are methods on the entity classes that are
-   called when the event is triggered. They receive some kind
-   of ``EventArgs`` instance.
-  Lifecycle Event Listeners and Subscribers are classes with specific callback
-   methods that receives some kind of ``EventArgs`` instance.
-
-The ``EventArgs`` instance received by the listener gives access to the entity,
-``EntityManager`` instance and other relevant data.
-
-.. note::
-
-    All Lifecycle events that happen during the ``flush()`` of
-    an ``EntityManager`` have very specific constraints on the allowed
-    operations that can be executed. Please read the
-    :ref:`reference-events-implementing-listeners` section very carefully
-    to understand which operations are allowed in which lifecycle event.
-
 .. _lifecycle-callbacks:

 Lifecycle Callbacks
@@ -296,20 +211,21 @@ specific to a particular entity class's lifecycle.
    .. code-block:: attribute

        <?php
+        
+        use Doctrine\DBAL\Types\Types;
+        use Doctrine\Persistence\Event\LifecycleEventArgs;

-        /**
-         * #[Entity]
-         * #[HasLifecycleCallbacks]
-         */
+        #[Entity]
+        #[HasLifecycleCallbacks]
        class User
        {
            // ...

-            #[Column(type: 'string', length: 255)]
+            #[Column(type: Types::STRING, length: 255)]
            public $value;

            #[PrePersist]
-            public function doStuffOnPrePersist()
+            public function doStuffOnPrePersist(LifecycleEventArgs $eventArgs)
            {
                $this->createdAt = date('Y-m-d H:i:s');
            }
@@ -320,15 +236,17 @@ specific to a particular entity class's lifecycle.
                $this->value = 'changed from prePersist callback!';
            }

-            #[PostLoad]
-            public function doStuffOnPostLoad()
+            #[PreUpdate]
+            public function doStuffOnPreUpdate(PreUpdateEventArgs $eventArgs)
            {
-                $this->value = 'changed from postLoad callback!';
+                $this->value = 'changed from preUpdate callback!';
            }
        }
    .. code-block:: annotation

        <?php
+        
+        use Doctrine\Persistence\Event\LifecycleEventArgs;

        /**
         * @Entity
@@ -342,7 +260,7 @@ specific to a particular entity class's lifecycle.
            public $value;

            /** @PrePersist */
-            public function doStuffOnPrePersist()
+            public function doStuffOnPrePersist(LifecycleEventArgs $eventArgs)
            {
                $this->createdAt = date('Y-m-d H:i:s');
            }
@@ -353,10 +271,10 @@ specific to a particular entity class's lifecycle.
                $this->value = 'changed from prePersist callback!';
            }

-            /** @PostLoad */
-            public function doStuffOnPostLoad()
+            /** @PreUpdate */
+            public function doStuffOnPreUpdate(PreUpdateEventArgs $eventArgs)
            {
-                $this->value = 'changed from postLoad callback!';
+                $this->value = 'changed from preUpdate callback!';
            }
        }
    .. code-block:: xml
@@ -372,7 +290,7 @@ specific to a particular entity class's lifecycle.
                <lifecycle-callbacks>
                    <lifecycle-callback type="prePersist" method="doStuffOnPrePersist"/>
                    <lifecycle-callback type="prePersist" method="doOtherStuffOnPrePersist"/>
-                    <lifecycle-callback type="postLoad" method="doStuffOnPostLoad"/>
+                    <lifecycle-callback type="preUpdate" method="doStuffOnPreUpdate"/>
                </lifecycle-callbacks>
            </entity>
        </doctrine-mapping>
@@ -386,7 +304,7 @@ specific to a particular entity class's lifecycle.
              type: string(255)
          lifecycleCallbacks:
            prePersist: [ doStuffOnPrePersist, doOtherStuffOnPrePersist ]
-            postLoad: [ doStuffOnPostLoad ]
+            preUpdate: [ doStuffOnPreUpdate ]

 Lifecycle Callbacks Event Argument
 ----------------------------------
@@ -533,21 +451,23 @@ that (prior to version 2.4) you do not have access to the
 prePersist
 ~~~~~~~~~~

-There are two ways for the ``prePersist`` event to be triggered.
-One is obviously when you call ``EntityManager#persist()``. The
-event is also called for all cascaded associations.
+There are two ways for the ``prePersist`` event to be triggered:

-There is another way for ``prePersist`` to be called, inside the
+- One is obviously when you call ``EntityManager::persist()``. The
+event is also called for all :ref:`cascaded associations<transitive-persistence>`.
+- The other is inside the
 ``flush()`` method when changes to associations are computed and
-this association is marked as cascade persist. Any new entity found
+this association is marked as :ref:`cascade: persist<transitive-persistence>`. Any new entity found
 during this operation is also persisted and ``prePersist`` called
-on it. This is called "persistence by reachability".
+on it. This is called :ref:`persistence by reachability<persistence-by-reachability>`.

 In both cases you get passed a ``LifecycleEventArgs`` instance
 which has access to the entity and the entity manager.

-The following restrictions apply to ``prePersist``:
+This event is only triggered on *initial* persist of an entity
+(i.e. it does not trigger on future updates).

+The following restrictions apply to ``prePersist``:

 -  If you are using a PrePersist Identity Generator such as
   sequences the ID value will *NOT* be available within any
@@ -555,15 +475,17 @@ The following restrictions apply to ``prePersist``:
 -  Doctrine will not recognize changes made to relations in a prePersist
   event. This includes modifications to
   collections such as additions, removals or replacement.
-   
+
 .. _reference-events-pre-remove:

 preRemove
 ~~~~~~~~~

-The ``preRemove`` event is called on every entity when its passed
-to the ``EntityManager#remove()`` method. It is cascaded for all
-associations that are marked as cascade delete.
+The ``preRemove`` event is called on every entity immediately when it is passed
+to the ``EntityManager::remove()`` method. It is cascaded for all
+associations that are marked as :ref:`cascade: remove<transitive-persistence>`
+
+It is not called for a DQL ``DELETE`` statement.

 There are no restrictions to what methods can be called inside the
 ``preRemove`` event, except when the remove method itself was
@@ -574,10 +496,10 @@ called during a flush operation.
 preFlush
 ~~~~~~~~

-``preFlush`` is called at ``EntityManager#flush()`` before
-anything else. ``EntityManager#flush()`` should not be called inside
-its listeners, since `preFlush` event is dispatched in it, which would
-result in infinite loop.
+``preFlush`` is called inside ``EntityManager::flush()`` before
+anything else. ``EntityManager::flush()`` must not be called inside
+its listeners, since it would fire the ``preFlush`` event again, which would
+result in an infinite loop.

 .. code-block:: php

@@ -598,12 +520,11 @@ result in infinite loop.
 onFlush
 ~~~~~~~

-OnFlush is a very powerful event. It is called inside
-``EntityManager#flush()`` after the changes to all the managed
+``onFlush`` is a very powerful event. It is called inside
+``EntityManager::flush()`` after the changes to all the managed
 entities and their associations have been computed. This means, the
 ``onFlush`` event has access to the sets of:

-
 -  Entities scheduled for insert
 -  Entities scheduled for update
 -  Entities scheduled for removal
@@ -611,7 +532,7 @@ entities and their associations have been computed. This means, the
 -  Collections scheduled for removal

 To make use of the ``onFlush`` event you have to be familiar with the
-internal ``UnitOfWork`` API, which grants you access to the previously
+internal :ref:`UnitOfWork<unit-of-work>` API, which grants you access to the previously
 mentioned sets. See this example:

 .. code-block:: php
@@ -646,11 +567,10 @@ mentioned sets. See this example:
        }
    }

-The following restrictions apply to the onFlush event:
-
+The following restrictions apply to the ``onFlush`` event:

 -  If you create and persist a new entity in ``onFlush``, then
-   calling ``EntityManager#persist()`` is not enough.
+   calling ``EntityManager::persist()`` is not enough.
   You have to execute an additional call to
   ``$unitOfWork->computeChangeSet($classMetadata, $entity)``.
 -  Changing primitive fields or associations requires you to
@@ -663,8 +583,9 @@ The following restrictions apply to the onFlush event:
 postFlush
 ~~~~~~~~~

-``postFlush`` is called at the end of ``EntityManager#flush()``.
-``EntityManager#flush()`` can **NOT** be called safely inside its listeners.
+``postFlush`` is called at the end of ``EntityManager::flush()``.
+``EntityManager::flush()`` can **NOT** be called safely inside its listeners.
+This event is not a lifecycle callback.

 .. code-block:: php

@@ -685,22 +606,22 @@ postFlush
 preUpdate
 ~~~~~~~~~

-PreUpdate is called inside the ``EntityManager#flush()`` method,
+PreUpdate is called inside the ``EntityManager::flush()`` method,
 right before an SQL ``UPDATE`` statement. This event is not
-triggered when the computed changeset is empty.
+triggered when the computed changeset is empty, nor for a DQL
+   ``UPDATE`` statement.

 Changes to associations of the updated entity are never allowed in
 this event, since Doctrine cannot guarantee to correctly handle
 referential integrity at this point of the flush operation. This
 event has a powerful feature however, it is executed with a
-``PreUpdateEventArgs`` instance, which contains a reference to the
+`_PreUpdateEventArgs`_ instance, which contains a reference to the
 computed change-set of this entity.

 This means you have access to all the fields that have changed for
 this entity with their old and new value. The following methods are
 available on the ``PreUpdateEventArgs``:

-
 -  ``getEntity()`` to get access to the actual entity.
 -  ``getEntityChangeSet()`` to get a copy of the changeset array.
   Changes to this returned array do not affect updating.
@@ -754,15 +675,14 @@ lifecycle callback when there are expensive validations to call:

 Restrictions for this event:

-
 -  Changes to associations of the passed entities are not
   recognized by the flush operation anymore.
 -  Changes to fields of the passed entities are not recognized by
   the flush operation anymore, use the computed change-set passed to
   the event to modify primitive field values, e.g. use
   ``$eventArgs->setNewValue($field, $value);`` as in the Alice to Bob example above.
-  Any calls to ``EntityManager#persist()`` or
-   ``EntityManager#remove()``, even in combination with the ``UnitOfWork``
+-  Any calls to ``EntityManager::persist()`` or
+   ``EntityManager::remove()``, even in combination with the ``UnitOfWork``
   API are strongly discouraged and don't work as expected outside the
   flush operation.

@@ -771,19 +691,54 @@ Restrictions for this event:
 postUpdate, postRemove, postPersist
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

-The three post events are called inside ``EntityManager#flush()``.
+These three post* events are called inside ``EntityManager::flush()``.
 Changes in here are not relevant to the persistence in the
 database, but you can use these events to alter non-persistable items,
 like non-mapped fields, logging or even associated classes that are
 not directly mapped by Doctrine.

+-  The ``postUpdate`` event occurs after the database
+   update operations to entity data. It is not called for a DQL
+   ``UPDATE`` statement.
+-  The ``postPersist`` event occurs for an entity after
+   the entity has been made persistent. It will be invoked after the
+   database insert operations. Generated primary key values are
+   available in the postPersist event.
+-  The ``postRemove`` event occurs for an entity after the
+   entity has been deleted. It will be invoked after the database
+   delete operations. It is not called for a DQL ``DELETE`` statement.
+
+.. warning::
+
+    The ``postRemove`` event or any events triggered after an entity removal
+    can receive an uninitializable proxy in case you have configured an entity to
+    cascade remove relations. In this case, you should load yourself the proxy in
+    the associated ``pre*`` event.
+
 .. _reference-events-post-load:

 postLoad
 ~~~~~~~~

-This event is called after an entity is constructed by the
-EntityManager.
+The postLoad event occurs after the entity has been loaded into the current
+``EntityManager`` from the database or after ``refresh()`` has been applied to it.
+
+.. warning::
+
+    When using ``Doctrine\ORM\AbstractQuery::toIterable()``, ``postLoad``
+    events will be executed immediately after objects are being hydrated, and therefore
+    associations are not guaranteed to be initialized. It is not safe to combine
+    usage of ``Doctrine\ORM\AbstractQuery::toIterable()`` and ``postLoad`` event
+    handlers.
+
+.. _reference-events-on-clear:
+
+onClear
+~~~~~~~~
+
+The ``onClear`` event occurs when the ``EntityManager::clear()`` operation is invoked,
+after all references to entities have been removed from the unit of work.
+This event is not a lifecycle callback.

 Entity listeners
 ----------------
@@ -1008,9 +963,11 @@ Implementing your own resolver :
 Load ClassMetadata Event
 ------------------------

-When the mapping information for an entity is read, it is populated
-in to a ``Doctrine\ORM\Mapping\ClassMetadata`` instance. You can hook in to this
-process and manipulate the instance.
+``loadClassMetadata`` - The ``loadClassMetadata`` event occurs after the
+mapping metadata for a class has been loaded from a mapping source
+(annotations/xml/yaml) in to a ``Doctrine\ORM\Mapping\ClassMetadata`` instance.
+You can hook in to this process and manipulate the instance.
+This event is not a lifecycle callback.

 .. code-block:: php

@@ -1033,6 +990,11 @@ process and manipulate the instance.
        }
    }

+If not class metadata can be found, an ``onClassMetadataNotFound`` event is dispatched.
+Manipulating the given event args instance
+allows providing fallback metadata even when no actual metadata exists
+or could be found. This event is not a lifecycle callback.
+
 SchemaTool Events
 -----------------

@@ -1085,3 +1047,12 @@ and the EntityManager.
            $em = $eventArgs->getEntityManager();
        }
    }
+
+.. _LifecycleEventArgs: https://github.com/doctrine/orm/blob/HEAD/lib/Doctrine/ORM/Event/LifecycleEventArgs.php
+.. _PreUpdateEventArgs: https://github.com/doctrine/orm/blob/HEAD/lib/Doctrine/ORM/Event/PreUpdateEventArgs.php
+.. _PreFlushEventArgs: https://github.com/doctrine/orm/blob/HEAD/lib/Doctrine/ORM/Event/PreFlushEventArgs.php
+.. _PostFlushEventArgs: https://github.com/doctrine/orm/blob/HEAD/lib/Doctrine/ORM/Event/PostFlushEventArgs.php
+.. _OnFlushEventArgs: https://github.com/doctrine/orm/blob/HEAD/lib/Doctrine/ORM/Event/OnFlushEventArgs.php
+.. _OnClearEventArgs: https://github.com/doctrine/orm/blob/HEAD/lib/Doctrine/ORM/Event/OnClearEventArgs.php
+.. _LoadClassMetadataEventArgs: https://github.com/doctrine/orm/blob/HEAD/lib/Doctrine/ORM/Event/LoadClassMetadataEventArgs.php
+.. _OnClassMetadataNotFoundEventArgs: https://github.com/doctrine/orm/blob/HEAD/lib/Doctrine/ORM/Event/OnClassMetadataNotFoundEventArgs.php
--- a/docs/en/reference/php-mapping.rst
+++ b/docs/en/reference/php-mapping.rst
@@ -9,6 +9,11 @@ the code in PHP files or inside of a static function named
 PHP Files
 ---------

+.. note::
+
+   PHPDriver is deprecated and will be removed in 3.0, use StaticPHPDriver
+   instead.
+
 If you wish to write your mapping information inside PHP files that
 are named after the entity and included to populate the metadata
 for an entity you can do so by using the ``PHPDriver``:
--- a/docs/en/reference/query-builder.rst
+++ b/docs/en/reference/query-builder.rst
@@ -13,7 +13,7 @@ as you want, or just pick a preferred one.

    The ``QueryBuilder`` is not an abstraction of DQL, but merely a tool to dynamically build it.
    You should still use plain DQL when you can, as it is simpler and more readable.
-    More about this in the :doc:`FAQ <faq>`_.
+    More about this in the :doc:`FAQ <faq>`.

 Constructing a new QueryBuilder object
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
--- a/docs/en/reference/second-level-cache.rst
+++ b/docs/en/reference/second-level-cache.rst
@@ -31,31 +31,31 @@ Each cache region resides in a specific cache namespace and has its own lifetime
 Notice that when caching collection and queries only identifiers are stored.
 The entity values will be stored in its own region

-Something like below for an entity region :
+Something like below for an entity region:

 .. code-block:: php

    <?php
    [
-      'region_name:entity_1_hash' => ['id'=> 1, 'name' => 'FooBar', 'associationName'=>null],
-      'region_name:entity_2_hash' => ['id'=> 2, 'name' => 'Foo', 'associationName'=>['id'=>11]],
-      'region_name:entity_3_hash' => ['id'=> 3, 'name' => 'Bar', 'associationName'=>['id'=>22]]
+      'region_name:entity_1_hash' => ['id' => 1, 'name' => 'FooBar', 'associationName' => null],
+      'region_name:entity_2_hash' => ['id' => 2, 'name' => 'Foo', 'associationName' => ['id' => 11]],
+      'region_name:entity_3_hash' => ['id' => 3, 'name' => 'Bar', 'associationName' => ['id' => 22]]
    ];


 If the entity holds a collection that also needs to be cached.
-An collection region could look something like :
+An collection region could look something like:

 .. code-block:: php

    <?php
    [
-      'region_name:entity_1_coll_assoc_name_hash' => ['ownerId'=> 1, 'list' => [1, 2, 3]],
-      'region_name:entity_2_coll_assoc_name_hash' => ['ownerId'=> 2, 'list' => [2, 3]],
-      'region_name:entity_3_coll_assoc_name_hash' => ['ownerId'=> 3, 'list' => [2, 4]]
+      'region_name:entity_1_coll_assoc_name_hash' => ['ownerId' => 1, 'list' => [1, 2, 3]],
+      'region_name:entity_2_coll_assoc_name_hash' => ['ownerId' => 2, 'list' => [2, 3]],
+      'region_name:entity_3_coll_assoc_name_hash' => ['ownerId' => 3, 'list' => [2, 4]]
    ];

-A query region might be something like :
+A query region might be something like:

 .. code-block:: php

@@ -93,8 +93,6 @@ Cache region
 ``Doctrine\ORM\Cache\Region`` defines a contract for accessing a particular
 cache region.

-`See API Doc <https://www.doctrine-project.org/api/orm/current/Doctrine/ORM/Cache/Region.html>`_.
-
 Concurrent cache region
 ~~~~~~~~~~~~~~~~~~~~~~~

@@ -105,8 +103,6 @@ If you want to use an ``READ_WRITE`` cache, you should consider providing your o

 ``Doctrine\ORM\Cache\ConcurrentRegion`` defines a contract for concurrently managed data region.

-`See API Doc <https://www.doctrine-project.org/api/orm/current/Doctrine/ORM/Cache/ConcurrentRegion.html>`_.
-
 Timestamp region
 ~~~~~~~~~~~~~~~~

@@ -114,8 +110,6 @@ Timestamp region

 Tracks the timestamps of the most recent updates to particular entity.

-`See API Doc <https://www.doctrine-project.org/api/orm/current/Doctrine/ORM/Cache/TimestampRegion.html>`_.
-
 .. _reference-second-level-cache-mode:

 Caching mode
@@ -132,7 +126,7 @@ Caching mode

  * Read Write Cache doesn’t employ any locks but can do reads, inserts, updates and deletes.
  * Good if the application needs to update data rarely.
-    
+

 * ``READ_WRITE``

@@ -147,21 +141,21 @@ Built-in cached persisters

 Cached persisters are responsible to access cache regions.

-    +-----------------------+-------------------------------------------------------------------------------------------+
-    | Cache Usage           | Persister                                                                                 |
-    +=======================+===========================================================================================+
-    | READ_ONLY             | Doctrine\\ORM\\Cache\\Persister\\Entity\\ReadOnlyCachedEntityPersister                    |
-    +-----------------------+-------------------------------------------------------------------------------------------+
-    | READ_WRITE            | Doctrine\\ORM\\Cache\\Persister\\Entity\\ReadWriteCachedEntityPersister                   |
-    +-----------------------+-------------------------------------------------------------------------------------------+
-    | NONSTRICT_READ_WRITE  | Doctrine\\ORM\\Cache\\Persister\\Entity\\NonStrictReadWriteCachedEntityPersister          |
-    +-----------------------+-------------------------------------------------------------------------------------------+
-    | READ_ONLY             | Doctrine\\ORM\\Cache\\Persister\\Collection\\ReadOnlyCachedCollectionPersister            |
-    +-----------------------+-------------------------------------------------------------------------------------------+
-    | READ_WRITE            | Doctrine\\ORM\\Cache\\Persister\\Collection\\ReadWriteCachedCollectionPersister           |
-    +-----------------------+-------------------------------------------------------------------------------------------+
-    | NONSTRICT_READ_WRITE  | Doctrine\\ORM\\Cache\\Persister\\Collection\\NonStrictReadWriteCachedCollectionPersister  |
-    +-----------------------+-------------------------------------------------------------------------------------------+
+    +-----------------------+------------------------------------------------------------------------------------------+
+    | Cache Usage           | Persister                                                                                |
+    +=======================+==========================================================================================+
+    | READ_ONLY             | ``Doctrine\ORM\Cache\Persister\Entity\ReadOnlyCachedEntityPersister``                    |
+    +-----------------------+------------------------------------------------------------------------------------------+
+    | READ_WRITE            | ``Doctrine\ORM\Cache\Persister\Entity\ReadWriteCachedEntityPersister``                   |
+    +-----------------------+------------------------------------------------------------------------------------------+
+    | NONSTRICT_READ_WRITE  | ``Doctrine\ORM\Cache\Persister\Entity\NonStrictReadWriteCachedEntityPersister``          |
+    +-----------------------+------------------------------------------------------------------------------------------+
+    | READ_ONLY             | ``Doctrine\ORM\Cache\Persister\Collection\ReadOnlyCachedCollectionPersister``            |
+    +-----------------------+------------------------------------------------------------------------------------------+
+    | READ_WRITE            | ``Doctrine\ORM\Cache\Persister\Collection\ReadWriteCachedCollectionPersister``           |
+    +-----------------------+------------------------------------------------------------------------------------------+
+    | NONSTRICT_READ_WRITE  | ``Doctrine\ORM\Cache\Persister\Collection\NonStrictReadWriteCachedCollectionPersister``  |
+    +-----------------------+------------------------------------------------------------------------------------------+

 Configuration
 -------------
@@ -172,13 +166,13 @@ Enable Second Level Cache
 ~~~~~~~~~~~~~~~~~~~~~~~~~

 To enable the second-level-cache, you should provide a cache factory.
-``\Doctrine\ORM\Cache\DefaultCacheFactory`` is the default implementation.
+``Doctrine\ORM\Cache\DefaultCacheFactory`` is the default implementation.

 .. code-block:: php

    <?php
    /** @var \Doctrine\ORM\Cache\RegionsConfiguration $cacheConfig */
-    /** @var \Doctrine\Common\Cache\Cache $cache */
+    /** @var \Psr\Cache\CacheItemPoolInterface $cache */
    /** @var \Doctrine\ORM\Configuration $config */

    $factory = new \Doctrine\ORM\Cache\DefaultCacheFactory($cacheConfig, $cache);
@@ -196,7 +190,7 @@ Cache Factory

 Cache Factory is the main point of extension.

-It allows you to provide a specific implementation of the following components :
+It allows you to provide a specific implementation of the following components:

 ``QueryCache``
    stores and retrieves query cache results.
@@ -209,8 +203,6 @@ It allows you to provide a specific implementation of the following components :
 ``CollectionHydrator``
    transforms collections into cache entries and cache entries into collections

-`See API Doc <https://www.doctrine-project.org/api/orm/current/Doctrine/ORM/Cache/DefaultCacheFactory.html>`_.
-
 Region Lifetime
 ~~~~~~~~~~~~~~~

@@ -234,12 +226,12 @@ Cache Log
 ~~~~~~~~~
 By providing a cache logger you should be able to get information about all cache operations such as hits, misses and puts.

-``\Doctrine\ORM\Cache\Logging\StatisticsCacheLogger`` is a built-in implementation that provides basic statistics.
+``Doctrine\ORM\Cache\Logging\StatisticsCacheLogger`` is a built-in implementation that provides basic statistics.

 .. code-block:: php

    <?php
-    /* @var $config \Doctrine\ORM\Configuration */
+    /** @var \Doctrine\ORM\Configuration $config */
    $logger = new \Doctrine\ORM\Cache\Logging\StatisticsCacheLogger();

    // Cache logger
@@ -269,12 +261,9 @@ By providing a cache logger you should be able to get information about all cach
    $logger->getMissCount();

 If you want to get more information you should implement
-``\Doctrine\ORM\Cache\Logging\CacheLogger`` and collect
+``Doctrine\ORM\Cache\Logging\CacheLogger`` and collect
 all the information you want.

-`See API Doc <https://www.doctrine-project.org/api/orm/current/Doctrine/ORM/Cache/Logging/CacheLogger.html>`_.
-
-
 Entity cache definition
 -----------------------
 * Entity cache configuration allows you to define the caching strategy and region for an entity.
@@ -330,8 +319,8 @@ level cache region.
        Country:
          type: entity
          cache:
-            usage : READ_ONLY
-            region : my_entity_region
+            usage: READ_ONLY
+            region: my_entity_region
          id:
            id:
              type: integer
@@ -401,7 +390,7 @@ It caches the primary keys of association and cache each element will be cached
            </id>

            <field name="name" type="string" column="name"/>
-            
+
            <many-to-one field="country" target-entity="Country">
              <cache usage="NONSTRICT_READ_WRITE" />

@@ -421,7 +410,7 @@ It caches the primary keys of association and cache each element will be cached
        State:
          type: entity
          cache:
-            usage : NONSTRICT_READ_WRITE
+            usage: NONSTRICT_READ_WRITE
          id:
            id:
              type: integer
@@ -439,17 +428,18 @@ It caches the primary keys of association and cache each element will be cached
                country_id:
                  referencedColumnName: id
              cache:
-                usage : NONSTRICT_READ_WRITE
+                usage: NONSTRICT_READ_WRITE

          oneToMany:
            cities:
              targetEntity:City
              mappedBy: state
              cache:
-                usage : NONSTRICT_READ_WRITE
+                usage: NONSTRICT_READ_WRITE

+.. note::

-> Note: for this to work, the target entity must also be marked as cacheable.
+    for this to work, the target entity must also be marked as cacheable.

 Cache usage
 ~~~~~~~~~~~
@@ -466,8 +456,8 @@ Basic entity cache

    $country1  = $em->find('Country', 1); // Retrieve item from cache

-    $country1->setName("New Name");
-    
+    $country1->setName('New Name');
+
    $em->flush();                         // Hit database to update the row and update cache

    $em->clear();                         // Clear entity manager
@@ -492,7 +482,7 @@ Association cache
    $state = $em->find('State', 1);

    // Hit database to update the row and update cache entry
-    $state->setName("New Name");
+    $state->setName('New Name');
    $em->persist($state);
    $em->flush();

@@ -543,14 +533,14 @@ The query cache stores the results of the query but as identifiers, entity value
 .. code-block:: php

    <?php
-    /* @var $em \Doctrine\ORM\EntityManager */
+    /** @var \Doctrine\ORM\EntityManager $em */

    // Execute database query, store query cache and entity cache
    $result1 = $em->createQuery('SELECT c FROM Country c ORDER BY c.name')
        ->setCacheable(true)
        ->getResult();

-    $em->clear()
+    $em->clear();

    // Check if query result is valid and load entities from cache
    $result2 = $em->createQuery('SELECT c FROM Country c ORDER BY c.name')
@@ -570,10 +560,10 @@ The Cache Mode controls how a particular query interacts with the second-level c
 .. code-block:: php

    <?php
-    /* @var $em \Doctrine\ORM\EntityManager */
+    /** @var \Doctrine\ORM\EntityManager $em */
    // Will refresh the query cache and all entities the cache as it reads from the database.
    $result1 = $em->createQuery('SELECT c FROM Country c ORDER BY c.name')
-        ->setCacheMode(Cache::MODE_GET)
+        ->setCacheMode(\Doctrine\ORM\Cache::MODE_GET)
        ->setCacheable(true)
        ->getResult();

@@ -597,7 +587,7 @@ Execute the ``UPDATE`` and invalidate ``all cache entries`` using ``Query::HINT_
    <?php
    // Execute and invalidate
    $this->_em->createQuery("UPDATE Entity\Country u SET u.name = 'unknown' WHERE u.id = 1")
-        ->setHint(Query::HINT_CACHE_EVICT, true)
+        ->setHint(\Doctrine\ORM\Query::HINT_CACHE_EVICT, true)
        ->execute();


@@ -659,7 +649,7 @@ However, you can use the cache API to check / invalidate cache entries.
 .. code-block:: php

    <?php
-    /* @var $cache \Doctrine\ORM\Cache */
+    /** @var \Doctrine\ORM\Cache $cache */
    $cache = $em->getCache();

    $cache->containsEntity('Entity\State', 1)      // Check if the cache exists
@@ -704,19 +694,19 @@ For performance reasons the cache API does not extract from composite primary ke
    }

    // Supported
-    /* @var $article Article */
+    /** @var Article $article */
    $article = $em->find('Article', 1);

    // Supported
-    /* @var $article Article */
+    /** @var Article $article */
    $article = $em->find('Article', $article);

    // Supported
-    $id        = array('source' => 1, 'target' => 2);
+    $id        = ['source' => 1, 'target' => 2];
    $reference = $em->find('Reference', $id);

    // NOT Supported
-    $id        = array('source' => new Article(1), 'target' => new Article(2));
+    $id        = ['source' => new Article(1), 'target' => new Article(2)];
    $reference = $em->find('Reference', $id);

 Distributed environments
--- a/docs/en/reference/working-with-associations.rst
+++ b/docs/en/reference/working-with-associations.rst
@@ -521,6 +521,8 @@ For each cascade operation that gets activated, Doctrine also
 applies that operation to the association, be it single or
 collection valued.

+.. _persistence-by-reachability:
+
 Persistence by Reachability: Cascade Persist
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

--- a/docs/en/reference/xml-mapping.rst
+++ b/docs/en/reference/xml-mapping.rst
@@ -256,6 +256,11 @@ Optional attributes:
   table? Defaults to false.
 -  nullable - Should this field allow NULL as a value? Defaults to
   false.
+-  insertable - Should this field be inserted? Defaults to true.
+-  updatable - Should this field be updated? Defaults to true.
+-  generated - Enum of the values ALWAYS, INSERT, NEVER that determines if
+   generated value must be fetched from database after INSERT or UPDATE.
+   Defaults to "NEVER".
 -  version - Should this field be used for optimistic locking? Only
   works on fields with type integer or datetime.
 -  scale - Scale of a decimal type.
@@ -689,6 +694,7 @@ specified by their respective tags:
 -  ``<cascade-merge />``
 -  ``<cascade-remove />``
 -  ``<cascade-refresh />``
+-  ``<cascade-detach />``

 Join Column Element
 ~~~~~~~~~~~~~~~~~~~
--- a/docs/en/tutorials/getting-started.rst
+++ b/docs/en/tutorials/getting-started.rst
@@ -81,10 +81,11 @@ that directory with the following contents:

    {
        "require": {
-            "doctrine/orm": "^2.10.2",
-            "doctrine/dbal": "^3.1.1",
-            "symfony/yaml": "2.*",
-            "symfony/cache": "^5.3"
+            "doctrine/orm": "^2.11.0",
+            "doctrine/dbal": "^3.2",
+            "doctrine/annotations": "1.13.2",
+            "symfony/yaml": "^5.4",
+            "symfony/cache": "^5.4"
        },
        "autoload": {
            "psr-0": {"": "src/"}
--- a/doctrine-mapping.xsd
+++ b/doctrine-mapping.xsd
@@ -288,6 +288,14 @@
    </xs:restriction>
  </xs:simpleType>

+  <xs:simpleType name="generated-type">
+    <xs:restriction base="xs:token">
+      <xs:enumeration value="NEVER"/>
+      <xs:enumeration value="INSERT"/>
+      <xs:enumeration value="ALWAYS"/>
+    </xs:restriction>
+  </xs:simpleType>
+
  <xs:complexType name="field">
    <xs:choice minOccurs="0" maxOccurs="unbounded">
      <xs:element name="options" type="orm:options" minOccurs="0" />
@@ -299,6 +307,10 @@
    <xs:attribute name="length" type="xs:NMTOKEN" />
    <xs:attribute name="unique" type="xs:boolean" default="false" />
    <xs:attribute name="nullable" type="xs:boolean" default="false" />
+    <xs:attribute name="insertable" type="xs:boolean" default="true" />
+    <xs:attribute name="updatable" type="xs:boolean" default="true" />
+    <xs:attribute name="generated" type="orm:generated-type" default="NEVER" />
+    <xs:attribute name="enum-type" type="xs:string" />
    <xs:attribute name="version" type="xs:boolean" />
    <xs:attribute name="column-definition" type="xs:string" />
    <xs:attribute name="precision" type="xs:integer" use="optional" />
@@ -353,7 +365,7 @@
      <xs:any minOccurs="0" maxOccurs="unbounded" namespace="##other"/>
    </xs:choice>
    <xs:attribute name="name" type="xs:NMTOKEN" use="optional"/>
-    <xs:attribute name="columns" type="xs:string" use="required"/>
+    <xs:attribute name="columns" type="xs:string" use="optional"/>
    <xs:attribute name="fields" type="xs:string" use="optional"/>
    <xs:attribute name="flags" type="xs:string" use="optional"/>
    <xs:anyAttribute namespace="##other"/>
@@ -622,6 +634,8 @@
    <xs:attribute name="length" type="xs:NMTOKEN" />
    <xs:attribute name="unique" type="xs:boolean" default="false" />
    <xs:attribute name="nullable" type="xs:boolean" default="false" />
+    <xs:attribute name="insertable" type="xs:boolean" default="true" />
+    <xs:attribute name="updateable" type="xs:boolean" default="true" />
    <xs:attribute name="version" type="xs:boolean" />
    <xs:attribute name="column-definition" type="xs:string" />
    <xs:attribute name="precision" type="xs:integer" use="optional" />
--- a/lib/Doctrine/ORM/AbstractQuery.php
+++ b/lib/Doctrine/ORM/AbstractQuery.php
@@ -22,6 +22,7 @@ use Doctrine\ORM\Query\Parameter;
 use Doctrine\ORM\Query\QueryException;
 use Doctrine\ORM\Query\ResultSetMapping;
 use Doctrine\Persistence\Mapping\MappingException;
+use LogicException;
 use Psr\Cache\CacheItemPoolInterface;
 use Traversable;

@@ -91,7 +92,7 @@ abstract class AbstractQuery
    /**
     * The user-specified ResultSetMapping to use.
     *
-     * @var ResultSetMapping
+     * @var ResultSetMapping|null
     */
    protected $_resultSetMapping;

@@ -113,6 +114,7 @@ abstract class AbstractQuery
     * The hydration mode.
     *
     * @var string|int
+     * @psalm-var string|AbstractQuery::HYDRATE_*
     */
    protected $_hydrationMode = self::HYDRATE_OBJECT;

@@ -150,6 +152,7 @@ abstract class AbstractQuery
     * Second level query cache mode.
     *
     * @var int|null
+     * @psalm-var Cache::MODE_*|null
     */
    protected $cacheMode;

@@ -251,7 +254,8 @@ abstract class AbstractQuery
    }

    /**
-     * @return int
+     * @return int|null
+     * @psalm-return Cache::MODE_*|null
     */
    public function getCacheMode()
    {
@@ -260,6 +264,7 @@ abstract class AbstractQuery

    /**
     * @param int $cacheMode
+     * @psalm-param Cache::MODE_* $cacheMode
     *
     * @return $this
     */
@@ -366,11 +371,11 @@ abstract class AbstractQuery
    /**
     * Sets a query parameter.
     *
-     * @param string|int  $key   The parameter position or name.
-     * @param mixed       $value The parameter value.
-     * @param string|null $type  The parameter type. If specified, the given value will be run through
-     *                           the type conversion of this type. This is usually not needed for
-     *                           strings and numeric types.
+     * @param string|int      $key   The parameter position or name.
+     * @param mixed           $value The parameter value.
+     * @param string|int|null $type  The parameter type. If specified, the given value will be run through
+     *                               the type conversion of this type. This is usually not needed for
+     *                               strings and numeric types.
     *
     * @return $this
     */
@@ -492,7 +497,7 @@ abstract class AbstractQuery
    /**
     * Gets the ResultSetMapping used for hydration.
     *
-     * @return ResultSetMapping
+     * @return ResultSetMapping|null
     */
    protected function getResultSetMapping()
    {
@@ -540,7 +545,7 @@ abstract class AbstractQuery
            return $this;
        }

-        // DBAL < 3.2
+        // DBAL 2
        if (! method_exists(QueryCacheProfile::class, 'setResultCache')) {
            if (! $profile->getResultCacheDriver()) {
                $defaultHydrationCacheImpl = $this->_em->getConfiguration()->getHydrationCache();
@@ -584,7 +589,7 @@ abstract class AbstractQuery
            return $this;
        }

-        // DBAL < 3.2
+        // DBAL 2
        if (! method_exists(QueryCacheProfile::class, 'setResultCache')) {
            if (! $profile->getResultCacheDriver()) {
                $defaultResultCacheDriver = $this->_em->getConfiguration()->getResultCache();
@@ -640,7 +645,7 @@ abstract class AbstractQuery
            return $this;
        }

-        // DBAL < 3.2
+        // DBAL 2
        if (! method_exists(QueryCacheProfile::class, 'setResultCache')) {
            $resultCacheDriver = DoctrineProvider::wrap($resultCache);

@@ -746,7 +751,7 @@ abstract class AbstractQuery
            return $this;
        }

-        // Compatibility for DBAL < 3.2
+        // Compatibility for DBAL 2
        if (! method_exists($this->_queryCacheProfile, 'setResultCache')) {
            $this->_queryCacheProfile = $this->_queryCacheProfile->setResultCacheDriver(DoctrineProvider::wrap($cache));

@@ -829,6 +834,7 @@ abstract class AbstractQuery
     *
     * @param string|int $hydrationMode Doctrine processing mode to be used during hydration process.
     *                                  One of the Query::HYDRATE_* constants.
+     * @psalm-param string|AbstractQuery::HYDRATE_* $hydrationMode
     *
     * @return $this
     */
@@ -843,6 +849,7 @@ abstract class AbstractQuery
     * Gets the hydration mode currently used by the query.
     *
     * @return string|int
+     * @psalm-return string|AbstractQuery::HYDRATE_*
     */
    public function getHydrationMode()
    {
@@ -855,6 +862,7 @@ abstract class AbstractQuery
     * Alias for execute(null, $hydrationMode = HYDRATE_OBJECT).
     *
     * @param string|int $hydrationMode
+     * @psalm-param string|AbstractQuery::HYDRATE_* $hydrationMode
     *
     * @return mixed
     */
@@ -902,7 +910,8 @@ abstract class AbstractQuery
    /**
     * Get exactly one result or null.
     *
-     * @param string|int $hydrationMode
+     * @param string|int|null $hydrationMode
+     * @psalm-param string|AbstractQuery::HYDRATE_*|null $hydrationMode
     *
     * @return mixed
     *
@@ -939,7 +948,8 @@ abstract class AbstractQuery
     * If the result is not unique, a NonUniqueResultException is thrown.
     * If there is no result, a NoResultException is thrown.
     *
-     * @param string|int $hydrationMode
+     * @param string|int|null $hydrationMode
+     * @psalm-param string|AbstractQuery::HYDRATE_*|null $hydrationMode
     *
     * @return mixed
     *
@@ -1037,6 +1047,7 @@ abstract class AbstractQuery
     *
     * @param ArrayCollection|mixed[]|null $parameters    The query parameters.
     * @param string|int|null              $hydrationMode The hydration mode to use.
+     * @psalm-param string|AbstractQuery::HYDRATE_*|null $hydrationMode The hydration mode to use.
     *
     * @return IterableResult
     */
@@ -1057,7 +1068,11 @@ abstract class AbstractQuery
            $this->setParameters($parameters);
        }

-        $rsm  = $this->getResultSetMapping();
+        $rsm = $this->getResultSetMapping();
+        if ($rsm === null) {
+            throw new LogicException('Uninitialized result set mapping.');
+        }
+
        $stmt = $this->_doExecute();

        return $this->_em->newHydrator($this->_hydrationMode)->iterate($stmt, $rsm, $this->_hints);
@@ -1070,6 +1085,7 @@ abstract class AbstractQuery
     * @param ArrayCollection|array|mixed[] $parameters    The query parameters.
     * @param string|int|null               $hydrationMode The hydration mode to use.
     * @psalm-param ArrayCollection<int, Parameter>|mixed[] $parameters
+     * @psalm-param string|AbstractQuery::HYDRATE_*|null    $hydrationMode
     *
     * @return iterable<mixed>
     */
@@ -1087,6 +1103,9 @@ abstract class AbstractQuery
        }

        $rsm = $this->getResultSetMapping();
+        if ($rsm === null) {
+            throw new LogicException('Uninitialized result set mapping.');
+        }

        if ($rsm->isMixed && count($rsm->scalarMappings) > 0) {
            throw QueryException::iterateWithMixedResultNotAllowed();
@@ -1103,6 +1122,7 @@ abstract class AbstractQuery
     * @param ArrayCollection|mixed[]|null $parameters    Query parameters.
     * @param string|int|null              $hydrationMode Processing mode to be used during the hydration process.
     * @psalm-param ArrayCollection<int, Parameter>|mixed[]|null $parameters
+     * @psalm-param string|AbstractQuery::HYDRATE_*|null         $hydrationMode
     *
     * @return mixed
     */
@@ -1121,6 +1141,7 @@ abstract class AbstractQuery
     * @param ArrayCollection|mixed[]|null $parameters
     * @param string|int|null              $hydrationMode
     * @psalm-param ArrayCollection<int, Parameter>|mixed[]|null $parameters
+     * @psalm-param string|AbstractQuery::HYDRATE_*|null         $hydrationMode
     *
     * @return mixed
     */
@@ -1165,7 +1186,11 @@ abstract class AbstractQuery
            return $stmt;
        }

-        $rsm  = $this->getResultSetMapping();
+        $rsm = $this->getResultSetMapping();
+        if ($rsm === null) {
+            throw new LogicException('Uninitialized result set mapping.');
+        }
+
        $data = $this->_em->newHydrator($this->_hydrationMode)->hydrateAll($stmt, $rsm, $this->_hints);

        $setCacheEntry($data);
@@ -1177,7 +1202,7 @@ abstract class AbstractQuery
    {
        assert($this->_hydrationCacheProfile !== null);

-        // Support for DBAL < 3.2
+        // Support for DBAL 2
        if (! method_exists($this->_hydrationCacheProfile, 'getResultCache')) {
            $cacheDriver = $this->_hydrationCacheProfile->getResultCacheDriver();
            assert($cacheDriver !== null);
@@ -1197,12 +1222,17 @@ abstract class AbstractQuery
     * @param ArrayCollection|mixed[]|null $parameters
     * @param string|int|null              $hydrationMode
     * @psalm-param ArrayCollection<int, Parameter>|mixed[]|null $parameters
+     * @psalm-param string|AbstractQuery::HYDRATE_*|null         $hydrationMode
     *
     * @return mixed
     */
    private function executeUsingQueryCache($parameters = null, $hydrationMode = null)
    {
-        $rsm        = $this->getResultSetMapping();
+        $rsm = $this->getResultSetMapping();
+        if ($rsm === null) {
+            throw new LogicException('Uninitialized result set mapping.');
+        }
+
        $queryCache = $this->_em->getCache()->getQueryCache($this->cacheRegion);
        $queryKey   = new QueryCacheKey(
            $this->getHash(),
@@ -1237,6 +1267,7 @@ abstract class AbstractQuery

    private function getTimestampKey(): ?TimestampCacheKey
    {
+        assert($this->_resultSetMapping !== null);
        $entityName = reset($this->_resultSetMapping->aliasMap);

        if (empty($entityName)) {
--- a/lib/Doctrine/ORM/Cache/AssociationCacheEntry.php
+++ b/lib/Doctrine/ORM/Cache/AssociationCacheEntry.php
@@ -10,15 +10,13 @@ namespace Doctrine\ORM\Cache;
 class AssociationCacheEntry implements CacheEntry
 {
    /**
-     * READ-ONLY: Public only for performance reasons, it should be considered immutable.
-     *
+     * @readonly Public only for performance reasons, it should be considered immutable.
     * @var array<string, mixed> The entity identifier
     */
    public $identifier;

    /**
-     * READ-ONLY: Public only for performance reasons, it should be considered immutable.
-     *
+     * @readonly Public only for performance reasons, it should be considered immutable.
     * @var string The entity class name
     */
    public $class;
--- a/lib/Doctrine/ORM/Cache/CacheKey.php
+++ b/lib/Doctrine/ORM/Cache/CacheKey.php
@@ -11,8 +11,7 @@ namespace Doctrine\ORM\Cache;
 abstract class CacheKey
 {
    /**
-     * READ-ONLY: Public only for performance reasons, it should be considered immutable.
-     *
+     * @readonly Public only for performance reasons, it should be considered immutable.
     * @var string Unique identifier
     */
    public $hash;
--- a/lib/Doctrine/ORM/Cache/CollectionCacheEntry.php
+++ b/lib/Doctrine/ORM/Cache/CollectionCacheEntry.php
@@ -10,8 +10,7 @@ namespace Doctrine\ORM\Cache;
 class CollectionCacheEntry implements CacheEntry
 {
    /**
-     * READ-ONLY: Public only for performance reasons, it should be considered immutable.
-     *
+     * @readonly Public only for performance reasons, it should be considered immutable.
     * @var CacheKey[] The list of entity identifiers hold by the collection
     */
    public $identifiers;
--- a/lib/Doctrine/ORM/Cache/CollectionCacheKey.php
+++ b/lib/Doctrine/ORM/Cache/CollectionCacheKey.php
@@ -15,22 +15,19 @@ use function strtolower;
 class CollectionCacheKey extends CacheKey
 {
    /**
-     * READ-ONLY: Public only for performance reasons, it should be considered immutable.
-     *
+     * @readonly Public only for performance reasons, it should be considered immutable.
     * @var array<string, mixed> The owner entity identifier
     */
    public $ownerIdentifier;

    /**
-     * READ-ONLY: Public only for performance reasons, it should be considered immutable.
-     *
+     * @readonly Public only for performance reasons, it should be considered immutable.
     * @var string The owner entity class
     */
    public $entityClass;

    /**
-     * READ-ONLY: Public only for performance reasons, it should be considered immutable.
-     *
+     * @readonly Public only for performance reasons, it should be considered immutable.
     * @var string The association name
     */
    public $association;
--- a/lib/Doctrine/ORM/Cache/CollectionHydrator.php
+++ b/lib/Doctrine/ORM/Cache/CollectionHydrator.php
@@ -28,7 +28,7 @@ interface CollectionHydrator
     * @param CollectionCacheEntry $entry      The cached collection entry.
     * @param PersistentCollection $collection The collection to load the cache into.
     *
-     * @return mixed[]
+     * @return mixed[]|null
     */
    public function loadCacheEntry(ClassMetadata $metadata, CollectionCacheKey $key, CollectionCacheEntry $entry, PersistentCollection $collection);
 }
--- a/lib/Doctrine/ORM/Cache/ConcurrentRegion.php
+++ b/lib/Doctrine/ORM/Cache/ConcurrentRegion.php
@@ -18,7 +18,7 @@ interface ConcurrentRegion extends Region
     *
     * @param CacheKey $key The key of the item to lock.
     *
-     * @return Lock A lock instance or NULL if the lock already exists.
+     * @return Lock|null A lock instance or NULL if the lock already exists.
     *
     * @throws LockException Indicates a problem accessing the region.
     */
@@ -30,7 +30,7 @@ interface ConcurrentRegion extends Region
     * @param CacheKey $key  The key of the item to unlock.
     * @param Lock     $lock The lock previously obtained from {@link readLock}
     *
-     * @return void
+     * @return bool
     *
     * @throws LockException Indicates a problem accessing the region.
     */
--- a/lib/Doctrine/ORM/Cache/DefaultCacheFactory.php
+++ b/lib/Doctrine/ORM/Cache/DefaultCacheFactory.php
@@ -4,9 +4,9 @@ declare(strict_types=1);

 namespace Doctrine\ORM\Cache;

-use Doctrine\Common\Cache\Cache as CacheAdapter;
-use Doctrine\Common\Cache\CacheProvider;
-use Doctrine\Common\Cache\MultiGetCache;
+use Doctrine\Common\Cache\Cache as LegacyCache;
+use Doctrine\Common\Cache\Psr6\CacheAdapter;
+use Doctrine\Deprecations\Deprecation;
 use Doctrine\ORM\Cache;
 use Doctrine\ORM\Cache\Persister\Collection\NonStrictReadWriteCachedCollectionPersister;
 use Doctrine\ORM\Cache\Persister\Collection\ReadOnlyCachedCollectionPersister;
@@ -14,7 +14,6 @@ use Doctrine\ORM\Cache\Persister\Collection\ReadWriteCachedCollectionPersister;
 use Doctrine\ORM\Cache\Persister\Entity\NonStrictReadWriteCachedEntityPersister;
 use Doctrine\ORM\Cache\Persister\Entity\ReadOnlyCachedEntityPersister;
 use Doctrine\ORM\Cache\Persister\Entity\ReadWriteCachedEntityPersister;
-use Doctrine\ORM\Cache\Region\DefaultMultiGetRegion;
 use Doctrine\ORM\Cache\Region\DefaultRegion;
 use Doctrine\ORM\Cache\Region\FileLockRegion;
 use Doctrine\ORM\Cache\Region\UpdateTimestampCache;
@@ -24,15 +23,19 @@ use Doctrine\ORM\Persisters\Collection\CollectionPersister;
 use Doctrine\ORM\Persisters\Entity\EntityPersister;
 use InvalidArgumentException;
 use LogicException;
+use Psr\Cache\CacheItemPoolInterface;
+use TypeError;

+use function assert;
+use function get_debug_type;
 use function sprintf;

 use const DIRECTORY_SEPARATOR;

 class DefaultCacheFactory implements CacheFactory
 {
-    /** @var CacheAdapter */
-    private $cache;
+    /** @var CacheItemPoolInterface */
+    private $cacheItemPool;

    /** @var RegionsConfiguration */
    private $regionsConfig;
@@ -46,9 +49,33 @@ class DefaultCacheFactory implements CacheFactory
    /** @var string|null */
    private $fileLockRegionDirectory;

-    public function __construct(RegionsConfiguration $cacheConfig, CacheAdapter $cache)
+    /**
+     * @param CacheItemPoolInterface $cacheItemPool
+     */
+    public function __construct(RegionsConfiguration $cacheConfig, $cacheItemPool)
    {
-        $this->cache         = $cache;
+        if ($cacheItemPool instanceof LegacyCache) {
+            Deprecation::trigger(
+                'doctrine/orm',
+                'https://github.com/doctrine/orm/pull/9322',
+                'Passing an instance of %s to %s is deprecated, pass a %s instead.',
+                get_debug_type($cacheItemPool),
+                __METHOD__,
+                CacheItemPoolInterface::class
+            );
+
+            $this->cacheItemPool = CacheAdapter::wrap($cacheItemPool);
+        } elseif (! $cacheItemPool instanceof CacheItemPoolInterface) {
+            throw new TypeError(sprintf(
+                '%s: Parameter #2 is expected to be an instance of %s, got %s.',
+                __METHOD__,
+                CacheItemPoolInterface::class,
+                get_debug_type($cacheItemPool)
+            ));
+        } else {
+            $this->cacheItemPool = $cacheItemPool;
+        }
+
        $this->regionsConfig = $cacheConfig;
    }

@@ -91,6 +118,7 @@ class DefaultCacheFactory implements CacheFactory
     */
    public function buildCachedEntityPersister(EntityManagerInterface $em, EntityPersister $persister, ClassMetadata $metadata)
    {
+        assert($metadata->cache !== null);
        $region = $this->getRegion($metadata->cache);
        $usage  = $metadata->cache['usage'];

@@ -181,13 +209,9 @@ class DefaultCacheFactory implements CacheFactory
            return $this->regions[$cache['region']];
        }

-        $name         = $cache['region'];
-        $cacheAdapter = $this->createRegionCache($name);
-        $lifetime     = $this->regionsConfig->getLifetime($cache['region']);
-
-        $region = $cacheAdapter instanceof MultiGetCache
-            ? new DefaultMultiGetRegion($name, $cacheAdapter, $lifetime)
-            : new DefaultRegion($name, $cacheAdapter, $lifetime);
+        $name     = $cache['region'];
+        $lifetime = $this->regionsConfig->getLifetime($cache['region']);
+        $region   = new DefaultRegion($name, $this->cacheItemPool, $lifetime);

        if ($cache['usage'] === ClassMetadata::CACHE_USAGE_READ_WRITE) {
            if (
@@ -207,25 +231,6 @@ class DefaultCacheFactory implements CacheFactory
        return $this->regions[$cache['region']] = $region;
    }

-    private function createRegionCache(string $name): CacheAdapter
-    {
-        $cacheAdapter = clone $this->cache;
-
-        if (! $cacheAdapter instanceof CacheProvider) {
-            return $cacheAdapter;
-        }
-
-        $namespace = $cacheAdapter->getNamespace();
-
-        if ($namespace !== '') {
-            $namespace .= ':';
-        }
-
-        $cacheAdapter->setNamespace($namespace . $name);
-
-        return $cacheAdapter;
-    }
-
    /**
     * {@inheritdoc}
     */
@@ -235,7 +240,7 @@ class DefaultCacheFactory implements CacheFactory
            $name     = Cache::DEFAULT_TIMESTAMP_REGION_NAME;
            $lifetime = $this->regionsConfig->getLifetime($name);

-            $this->timestampRegion = new UpdateTimestampCache($name, clone $this->cache, $lifetime);
+            $this->timestampRegion = new UpdateTimestampCache($name, $this->cacheItemPool, $lifetime);
        }

        return $this->timestampRegion;
@@ -244,8 +249,8 @@ class DefaultCacheFactory implements CacheFactory
    /**
     * {@inheritdoc}
     */
-    public function createCache(EntityManagerInterface $em)
+    public function createCache(EntityManagerInterface $entityManager)
    {
-        return new DefaultCache($em);
+        return new DefaultCache($entityManager);
    }
 }
--- a/lib/Doctrine/ORM/Cache/DefaultCollectionHydrator.php
+++ b/lib/Doctrine/ORM/Cache/DefaultCollectionHydrator.php
@@ -11,7 +11,6 @@ use Doctrine\ORM\PersistentCollection;
 use Doctrine\ORM\Query;
 use Doctrine\ORM\UnitOfWork;

-use function array_walk;
 use function assert;

 /**
--- a/lib/Doctrine/ORM/Cache/DefaultEntityHydrator.php
+++ b/lib/Doctrine/ORM/Cache/DefaultEntityHydrator.php
@@ -55,8 +55,16 @@ class DefaultEntityHydrator implements EntityHydrator
        $data = $this->uow->getOriginalEntityData($entity);
        $data = array_merge($data, $metadata->getIdentifierValues($entity)); // why update has no identifier values ?

-        if ($metadata->isVersioned) {
-            $data[$metadata->versionField] = $metadata->getFieldValue($entity, $metadata->versionField);
+        if ($metadata->requiresFetchAfterChange) {
+            if ($metadata->isVersioned) {
+                $data[$metadata->versionField] = $metadata->getFieldValue($entity, $metadata->versionField);
+            }
+
+            foreach ($metadata->fieldMappings as $name => $fieldMapping) {
+                if (isset($fieldMapping['generated'])) {
+                    $data[$name] = $metadata->getFieldValue($entity, $name);
+                }
+            }
        }

        foreach ($metadata->associationMappings as $name => $assoc) {
--- a/lib/Doctrine/ORM/Cache/DefaultQueryCache.php
+++ b/lib/Doctrine/ORM/Cache/DefaultQueryCache.php
@@ -18,7 +18,6 @@ use Doctrine\ORM\Query;
 use Doctrine\ORM\Query\ResultSetMapping;
 use Doctrine\ORM\UnitOfWork;

-use function array_key_exists;
 use function array_map;
 use function array_shift;
 use function array_unshift;
@@ -45,7 +44,7 @@ class DefaultQueryCache implements QueryCache
    /** @var QueryCacheValidator */
    private $validator;

-    /** @var CacheLogger */
+    /** @var CacheLogger|null */
    protected $cacheLogger;

    /** @var array<string,mixed> */
--- a/lib/Doctrine/ORM/Cache/EntityCacheEntry.php
+++ b/lib/Doctrine/ORM/Cache/EntityCacheEntry.php
@@ -14,15 +14,13 @@ use function array_map;
 class EntityCacheEntry implements CacheEntry
 {
    /**
-     * READ-ONLY: Public only for performance reasons, it should be considered immutable.
-     *
+     * @readonly Public only for performance reasons, it should be considered immutable.
     * @var array<string,mixed> The entity map data
     */
    public $data;

    /**
-     * READ-ONLY: Public only for performance reasons, it should be considered immutable.
-     *
+     * @readonly Public only for performance reasons, it should be considered immutable.
     * @var string The entity class name
     * @psalm-var class-string
     */
--- a/lib/Doctrine/ORM/Cache/EntityCacheKey.php
+++ b/lib/Doctrine/ORM/Cache/EntityCacheKey.php
@@ -15,15 +15,13 @@ use function strtolower;
 class EntityCacheKey extends CacheKey
 {
    /**
-     * READ-ONLY: Public only for performance reasons, it should be considered immutable.
-     *
+     * @readonly Public only for performance reasons, it should be considered immutable.
     * @var array<string, mixed> The entity identifier
     */
    public $identifier;

    /**
-     * READ-ONLY: Public only for performance reasons, it should be considered immutable.
-     *
+     * @readonly Public only for performance reasons, it should be considered immutable.
     * @var string The entity class name
     */
    public $entityClass;
--- a/lib/Doctrine/ORM/Cache/EntityHydrator.php
+++ b/lib/Doctrine/ORM/Cache/EntityHydrator.php
@@ -24,7 +24,9 @@ interface EntityHydrator
     * @param ClassMetadata    $metadata The entity metadata.
     * @param EntityCacheKey   $key      The entity cache key.
     * @param EntityCacheEntry $entry    The entity cache entry.
-     * @param object           $entity   The entity to load the cache into. If not specified, a new entity is created.
+     * @param object|null      $entity   The entity to load the cache into. If not specified, a new entity is created.
+     *
+     * @return object|null
     */
    public function loadCacheEntry(ClassMetadata $metadata, EntityCacheKey $key, EntityCacheEntry $entry, $entity = null);
 }
--- a/lib/Doctrine/ORM/Cache/Exception/CacheException.php
+++ b/lib/Doctrine/ORM/Cache/Exception/CacheException.php
@@ -6,8 +6,6 @@ namespace Doctrine\ORM\Cache\Exception;

 use Doctrine\ORM\Cache\CacheException as BaseCacheException;

-use function sprintf;
-
 /**
 * Exception for cache.
 */
--- a/lib/Doctrine/ORM/Cache/Exception/CannotUpdateReadOnlyCollection.php
+++ b/lib/Doctrine/ORM/Cache/Exception/CannotUpdateReadOnlyCollection.php
@@ -4,8 +4,6 @@ declare(strict_types=1);

 namespace Doctrine\ORM\Cache\Exception;

-use LogicException;
-
 use function sprintf;

 class CannotUpdateReadOnlyCollection extends CacheException
--- a/lib/Doctrine/ORM/Cache/Exception/CannotUpdateReadOnlyEntity.php
+++ b/lib/Doctrine/ORM/Cache/Exception/CannotUpdateReadOnlyEntity.php
@@ -4,8 +4,6 @@ declare(strict_types=1);

 namespace Doctrine\ORM\Cache\Exception;

-use LogicException;
-
 use function sprintf;

 class CannotUpdateReadOnlyEntity extends CacheException
--- a/lib/Doctrine/ORM/Cache/Exception/FeatureNotImplemented.php
+++ b/lib/Doctrine/ORM/Cache/Exception/FeatureNotImplemented.php
@@ -4,8 +4,6 @@ declare(strict_types=1);

 namespace Doctrine\ORM\Cache\Exception;

-use LogicException;
-
 class FeatureNotImplemented extends CacheException
 {
    public static function scalarResults(): self
--- a/lib/Doctrine/ORM/Cache/Exception/MetadataCacheNotConfigured.php
+++ b/lib/Doctrine/ORM/Cache/Exception/MetadataCacheNotConfigured.php
@@ -4,8 +4,6 @@ declare(strict_types=1);

 namespace Doctrine\ORM\Cache\Exception;

-use LogicException;
-
 final class MetadataCacheNotConfigured extends CacheException
 {
    public static function create(): self
--- a/lib/Doctrine/ORM/Cache/Exception/MetadataCacheUsesNonPersistentCache.php
+++ b/lib/Doctrine/ORM/Cache/Exception/MetadataCacheUsesNonPersistentCache.php
@@ -5,16 +5,15 @@ declare(strict_types=1);
 namespace Doctrine\ORM\Cache\Exception;

 use Doctrine\Common\Cache\Cache;
-use LogicException;

-use function get_class;
+use function get_debug_type;

 final class MetadataCacheUsesNonPersistentCache extends CacheException
 {
    public static function fromDriver(Cache $cache): self
    {
        return new self(
-            'Metadata Cache uses a non-persistent cache driver, ' . get_class($cache) . '.'
+            'Metadata Cache uses a non-persistent cache driver, ' . get_debug_type($cache) . '.'
        );
    }
 }
--- a/lib/Doctrine/ORM/Cache/Exception/NonCacheableEntity.php
+++ b/lib/Doctrine/ORM/Cache/Exception/NonCacheableEntity.php
@@ -4,8 +4,6 @@ declare(strict_types=1);

 namespace Doctrine\ORM\Cache\Exception;

-use LogicException;
-
 use function sprintf;

 class NonCacheableEntity extends CacheException
--- a/lib/Doctrine/ORM/Cache/Exception/QueryCacheNotConfigured.php
+++ b/lib/Doctrine/ORM/Cache/Exception/QueryCacheNotConfigured.php
@@ -4,8 +4,6 @@ declare(strict_types=1);

 namespace Doctrine\ORM\Cache\Exception;

-use LogicException;
-
 final class QueryCacheNotConfigured extends CacheException
 {
    public static function create(): self
--- a/lib/Doctrine/ORM/Cache/Exception/QueryCacheUsesNonPersistentCache.php
+++ b/lib/Doctrine/ORM/Cache/Exception/QueryCacheUsesNonPersistentCache.php
@@ -5,16 +5,15 @@ declare(strict_types=1);
 namespace Doctrine\ORM\Cache\Exception;

 use Doctrine\Common\Cache\Cache;
-use LogicException;

-use function get_class;
+use function get_debug_type;

 final class QueryCacheUsesNonPersistentCache extends CacheException
 {
    public static function fromDriver(Cache $cache): self
    {
        return new self(
-            'Query Cache uses a non-persistent cache driver, ' . get_class($cache) . '.'
+            'Query Cache uses a non-persistent cache driver, ' . get_debug_type($cache) . '.'
        );
    }
 }
--- a/lib/Doctrine/ORM/Cache/Persister/Collection/ReadOnlyCachedCollectionPersister.php
+++ b/lib/Doctrine/ORM/Cache/Persister/Collection/ReadOnlyCachedCollectionPersister.php
@@ -5,7 +5,6 @@ declare(strict_types=1);
 namespace Doctrine\ORM\Cache\Persister\Collection;

 use Doctrine\Common\Util\ClassUtils;
-use Doctrine\ORM\Cache\CacheException;
 use Doctrine\ORM\Cache\Exception\CannotUpdateReadOnlyCollection;
 use Doctrine\ORM\PersistentCollection;

--- a/lib/Doctrine/ORM/Cache/QueryCacheEntry.php
+++ b/lib/Doctrine/ORM/Cache/QueryCacheEntry.php
@@ -12,15 +12,13 @@ use function microtime;
 class QueryCacheEntry implements CacheEntry
 {
    /**
-     * READ-ONLY: Public only for performance reasons, it should be considered immutable.
-     *
+     * @readonly Public only for performance reasons, it should be considered immutable.
     * @var array<string, mixed> List of entity identifiers
     */
    public $result;

    /**
-     * READ-ONLY: Public only for performance reasons, it should be considered immutable.
-     *
+     * @readonly Public only for performance reasons, it should be considered immutable.
     * @var float Time creation of this cache entry
     */
    public $time;
--- a/lib/Doctrine/ORM/Cache/QueryCacheKey.php
+++ b/lib/Doctrine/ORM/Cache/QueryCacheKey.php
@@ -12,26 +12,29 @@ use Doctrine\ORM\Cache;
 class QueryCacheKey extends CacheKey
 {
    /**
-     * READ-ONLY: Public only for performance reasons, it should be considered immutable.
-     *
+     * @readonly Public only for performance reasons, it should be considered immutable.
     * @var int Cache key lifetime
     */
    public $lifetime;

    /**
-     * READ-ONLY: Public only for performance reasons, it should be considered immutable.
+     * Cache mode
     *
-     * @var int Cache mode (Doctrine\ORM\Cache::MODE_*)
+     * @readonly Public only for performance reasons, it should be considered immutable.
+     * @var int
+     * @psalm-var Cache::MODE_*
     */
    public $cacheMode;

    /**
-     * READ-ONLY: Public only for performance reasons, it should be considered immutable.
-     *
+     * @readonly Public only for performance reasons, it should be considered immutable.
     * @var TimestampCacheKey|null
     */
    public $timestampKey;

+    /**
+     * @psalm-param Cache::MODE_* $cacheMode
+     */
    public function __construct(
        string $cacheId,
        int $lifetime = 0,
--- a/lib/Doctrine/ORM/Cache/Region.php
+++ b/lib/Doctrine/ORM/Cache/Region.php
@@ -45,6 +45,8 @@ interface Region extends MultiGetRegion
     * @param CacheEntry $entry The entry to cache.
     * @param Lock|null  $lock  The lock previously obtained.
     *
+     * @return bool
+     *
     * @throws CacheException Indicates a problem accessing the region.
     */
    public function put(CacheKey $key, CacheEntry $entry, ?Lock $lock = null);
@@ -54,6 +56,8 @@ interface Region extends MultiGetRegion
     *
     * @param CacheKey $key The key under which to cache the item.
     *
+     * @return bool
+     *
     * @throws CacheException Indicates a problem accessing the region.
     */
    public function evict(CacheKey $key);
@@ -61,6 +65,8 @@ interface Region extends MultiGetRegion
    /**
     * Remove all contents of this particular cache region.
     *
+     * @return bool
+     *
     * @throws CacheException Indicates problem accessing the region.
     */
    public function evictAll();
--- a/lib/Doctrine/ORM/Cache/Region/DefaultMultiGetRegion.php
+++ b/lib/Doctrine/ORM/Cache/Region/DefaultMultiGetRegion.php
@@ -4,64 +4,11 @@ declare(strict_types=1);

 namespace Doctrine\ORM\Cache\Region;

-use Doctrine\Common\Cache\Cache;
-use Doctrine\Common\Cache\MultiGetCache;
-use Doctrine\ORM\Cache\CacheEntry;
-use Doctrine\ORM\Cache\CollectionCacheEntry;
-
-use function assert;
-use function count;
-
 /**
 * A cache region that enables the retrieval of multiple elements with one call
+ *
+ * @deprecated Use {@link DefaultRegion} instead.
 */
 class DefaultMultiGetRegion extends DefaultRegion
 {
-    /**
-     * Note that the multiple type is due to doctrine/cache not integrating the MultiGetCache interface
-     * in its signature due to BC in 1.x
-     *
-     * @var MultiGetCache|Cache
-     */
-    protected $cache;
-
-    /**
-     * {@inheritDoc}
-     *
-     * @param MultiGetCache $cache
-     */
-    public function __construct($name, MultiGetCache $cache, $lifetime = 0)
-    {
-        assert($cache instanceof Cache);
-        parent::__construct($name, $cache, $lifetime);
-    }
-
-    /**
-     * {@inheritdoc}
-     */
-    public function getMultiple(CollectionCacheEntry $collection)
-    {
-        $keysToRetrieve = [];
-
-        foreach ($collection->identifiers as $index => $key) {
-            $keysToRetrieve[$index] = $this->getCacheEntryKey($key);
-        }
-
-        $items = $this->cache->fetchMultiple($keysToRetrieve);
-        if (count($items) !== count($keysToRetrieve)) {
-            return null;
-        }
-
-        $returnableItems = [];
-
-        foreach ($keysToRetrieve as $index => $key) {
-            if (! $items[$key] instanceof CacheEntry) {
-                return null;
-            }
-
-            $returnableItems[$index] = $items[$key];
-        }
-
-        return $returnableItems;
-    }
 }
--- a/lib/Doctrine/ORM/Cache/Region/DefaultRegion.php
+++ b/lib/Doctrine/ORM/Cache/Region/DefaultRegion.php
@@ -4,44 +4,94 @@ declare(strict_types=1);

 namespace Doctrine\ORM\Cache\Region;

-use BadMethodCallException;
-use Doctrine\Common\Cache\Cache as CacheAdapter;
+use Closure;
+use Doctrine\Common\Cache\Cache as LegacyCache;
 use Doctrine\Common\Cache\CacheProvider;
-use Doctrine\Common\Cache\ClearableCache;
+use Doctrine\Common\Cache\Psr6\CacheAdapter;
+use Doctrine\Common\Cache\Psr6\DoctrineProvider;
+use Doctrine\Deprecations\Deprecation;
 use Doctrine\ORM\Cache\CacheEntry;
 use Doctrine\ORM\Cache\CacheKey;
 use Doctrine\ORM\Cache\CollectionCacheEntry;
 use Doctrine\ORM\Cache\Lock;
 use Doctrine\ORM\Cache\Region;
+use Psr\Cache\CacheItemInterface;
+use Psr\Cache\CacheItemPoolInterface;
+use Traversable;
+use TypeError;

-use function get_class;
+use function array_map;
+use function get_debug_type;
+use function iterator_to_array;
 use function sprintf;
+use function strtr;

 /**
 * The simplest cache region compatible with all doctrine-cache drivers.
 */
 class DefaultRegion implements Region
 {
+    /**
+     * @internal since 2.11, this constant will be private in 3.0.
+     */
    public const REGION_KEY_SEPARATOR = '_';
-
-    /** @var CacheAdapter */
-    protected $cache;
-
-    /** @var string */
-    protected $name;
-
-    /** @var int */
-    protected $lifetime = 0;
+    private const REGION_PREFIX       = 'DC2_REGION_';

    /**
-     * @param string $name
-     * @param int    $lifetime
+     * @deprecated since 2.11, this property will be removed in 3.0.
+     *
+     * @var LegacyCache
     */
-    public function __construct($name, CacheAdapter $cache, $lifetime = 0)
+    protected $cache;
+
+    /**
+     * @internal since 2.11, this property will be private in 3.0.
+     *
+     * @var string
+     */
+    protected $name;
+
+    /**
+     * @internal since 2.11, this property will be private in 3.0.
+     *
+     * @var int
+     */
+    protected $lifetime = 0;
+
+    /** @var CacheItemPoolInterface */
+    private $cacheItemPool;
+
+    /**
+     * @param CacheItemPoolInterface $cacheItemPool
+     */
+    public function __construct(string $name, $cacheItemPool, int $lifetime = 0)
    {
-        $this->cache    = $cache;
-        $this->name     = (string) $name;
-        $this->lifetime = (int) $lifetime;
+        if ($cacheItemPool instanceof LegacyCache) {
+            Deprecation::trigger(
+                'doctrine/orm',
+                'https://github.com/doctrine/orm/pull/9322',
+                'Passing an instance of %s to %s is deprecated, pass a %s instead.',
+                get_debug_type($cacheItemPool),
+                __METHOD__,
+                CacheItemPoolInterface::class
+            );
+
+            $this->cache         = $cacheItemPool;
+            $this->cacheItemPool = CacheAdapter::wrap($cacheItemPool);
+        } elseif (! $cacheItemPool instanceof CacheItemPoolInterface) {
+            throw new TypeError(sprintf(
+                '%s: Parameter #2 is expected to be an instance of %s, got %s.',
+                __METHOD__,
+                CacheItemPoolInterface::class,
+                get_debug_type($cacheItemPool)
+            ));
+        } else {
+            $this->cache         = DoctrineProvider::wrap($cacheItemPool);
+            $this->cacheItemPool = $cacheItemPool;
+        }
+
+        $this->name     = $name;
+        $this->lifetime = $lifetime;
    }

    /**
@@ -53,6 +103,8 @@ class DefaultRegion implements Region
    }

    /**
+     * @deprecated
+     *
     * @return CacheProvider
     */
    public function getCache()
@@ -65,7 +117,7 @@ class DefaultRegion implements Region
     */
    public function contains(CacheKey $key)
    {
-        return $this->cache->contains($this->getCacheEntryKey($key));
+        return $this->cacheItemPool->hasItem($this->getCacheEntryKey($key));
    }

    /**
@@ -73,7 +125,8 @@ class DefaultRegion implements Region
     */
    public function get(CacheKey $key)
    {
-        $entry = $this->cache->fetch($this->getCacheEntryKey($key));
+        $item  = $this->cacheItemPool->getItem($this->getCacheEntryKey($key));
+        $entry = $item->isHit() ? $item->get() : null;

        if (! $entry instanceof CacheEntry) {
            return null;
@@ -87,30 +140,33 @@ class DefaultRegion implements Region
     */
    public function getMultiple(CollectionCacheEntry $collection)
    {
+        $keys = array_map(
+            Closure::fromCallable([$this, 'getCacheEntryKey']),
+            $collection->identifiers
+        );
+        /** @var iterable<string, CacheItemInterface> $items */
+        $items = $this->cacheItemPool->getItems($keys);
+        if ($items instanceof Traversable) {
+            $items = iterator_to_array($items);
+        }
+
        $result = [];
-
-        foreach ($collection->identifiers as $key) {
-            $entryKey   = $this->getCacheEntryKey($key);
-            $entryValue = $this->cache->fetch($entryKey);
-
-            if (! $entryValue instanceof CacheEntry) {
+        foreach ($keys as $arrayKey => $cacheKey) {
+            if (! isset($items[$cacheKey]) || ! $items[$cacheKey]->isHit()) {
                return null;
            }

-            $result[] = $entryValue;
+            $entry = $items[$cacheKey]->get();
+            if (! $entry instanceof CacheEntry) {
+                return null;
+            }
+
+            $result[$arrayKey] = $entry;
        }

        return $result;
    }

-    /**
-     * @return string
-     */
-    protected function getCacheEntryKey(CacheKey $key)
-    {
-        return $this->name . self::REGION_KEY_SEPARATOR . $key->hash;
-    }
-
    /**
     * {@inheritdoc}
     *
@@ -118,7 +174,15 @@ class DefaultRegion implements Region
     */
    public function put(CacheKey $key, CacheEntry $entry, ?Lock $lock = null)
    {
-        return $this->cache->save($this->getCacheEntryKey($key), $entry, $this->lifetime);
+        $item = $this->cacheItemPool
+            ->getItem($this->getCacheEntryKey($key))
+            ->set($entry);
+
+        if ($this->lifetime > 0) {
+            $item->expiresAfter($this->lifetime);
+        }
+
+        return $this->cacheItemPool->save($item);
    }

    /**
@@ -128,7 +192,7 @@ class DefaultRegion implements Region
     */
    public function evict(CacheKey $key)
    {
-        return $this->cache->delete($this->getCacheEntryKey($key));
+        return $this->cacheItemPool->deleteItem($this->getCacheEntryKey($key));
    }

    /**
@@ -138,13 +202,16 @@ class DefaultRegion implements Region
     */
    public function evictAll()
    {
-        if (! $this->cache instanceof ClearableCache) {
-            throw new BadMethodCallException(sprintf(
-                'Clearing all cache entries is not supported by the supplied cache adapter of type %s',
-                get_class($this->cache)
-            ));
-        }
+        return $this->cacheItemPool->clear(self::REGION_PREFIX . $this->name);
+    }

-        return $this->cache->deleteAll();
+    /**
+     * @internal since 2.11, this method will be private in 3.0.
+     *
+     * @return string
+     */
+    protected function getCacheEntryKey(CacheKey $key)
+    {
+        return self::REGION_PREFIX . $this->name . self::REGION_KEY_SEPARATOR . strtr($key->hash, '{}()/\@:', '________');
    }
 }
--- a/lib/Doctrine/ORM/Cache/Region/FileLockRegion.php
+++ b/lib/Doctrine/ORM/Cache/Region/FileLockRegion.php
@@ -228,8 +228,6 @@ class FileLockRegion implements ConcurrentRegion

    /**
     * {@inheritdoc}
-     *
-     * @return bool
     */
    public function unlock(CacheKey $key, Lock $lock)
    {
--- a/lib/Doctrine/ORM/Cache/TimestampCacheEntry.php
+++ b/lib/Doctrine/ORM/Cache/TimestampCacheEntry.php
@@ -12,8 +12,7 @@ use function microtime;
 class TimestampCacheEntry implements CacheEntry
 {
    /**
-     * READ-ONLY: Public only for performance reasons, it should be considered immutable.
-     *
+     * @readonly Public only for performance reasons, it should be considered immutable.
     * @var float
     */
    public $time;
--- a/lib/Doctrine/ORM/Configuration.php
+++ b/lib/Doctrine/ORM/Configuration.php
@@ -25,6 +25,7 @@ use Doctrine\ORM\Exception\NamedNativeQueryNotFound;
 use Doctrine\ORM\Exception\NamedQueryNotFound;
 use Doctrine\ORM\Exception\ProxyClassesAlwaysRegenerating;
 use Doctrine\ORM\Exception\UnknownEntityNamespace;
+use Doctrine\ORM\Internal\Hydration\AbstractHydrator;
 use Doctrine\ORM\Mapping\ClassMetadataFactory;
 use Doctrine\ORM\Mapping\DefaultEntityListenerResolver;
 use Doctrine\ORM\Mapping\DefaultNamingStrategy;
@@ -38,11 +39,13 @@ use Doctrine\ORM\Repository\DefaultRepositoryFactory;
 use Doctrine\ORM\Repository\RepositoryFactory;
 use Doctrine\Persistence\Mapping\Driver\MappingDriver;
 use Doctrine\Persistence\ObjectRepository;
+use LogicException;
 use Psr\Cache\CacheItemPoolInterface;
 use ReflectionClass;

 use function class_exists;
 use function method_exists;
+use function sprintf;
 use function strtolower;
 use function trim;

@@ -161,6 +164,14 @@ class Configuration extends \Doctrine\DBAL\Configuration
     */
    public function newDefaultAnnotationDriver($paths = [], $useSimpleAnnotationReader = true)
    {
+        if (! class_exists(AnnotationReader::class)) {
+            throw new LogicException(sprintf(
+                'The annotation metadata driver cannot be enabled because the "doctrine/annotations" library'
+                . ' is not installed. Please run "composer require doctrine/annotations" or choose a different'
+                . ' metadata driver.'
+            ));
+        }
+
        AnnotationRegistry::registerFile(__DIR__ . '/Mapping/Driver/DoctrineAnnotations.php');

        if ($useSimpleAnnotationReader) {
@@ -256,7 +267,7 @@ class Configuration extends \Doctrine\DBAL\Configuration
     */
    public function getResultCache(): ?CacheItemPoolInterface
    {
-        // Compatibility with DBAL < 3.2
+        // Compatibility with DBAL 2
        if (! method_exists(parent::class, 'getResultCache')) {
            $cacheImpl = $this->getResultCacheImpl();

@@ -271,7 +282,7 @@ class Configuration extends \Doctrine\DBAL\Configuration
     */
    public function setResultCache(CacheItemPoolInterface $cache): void
    {
-        // Compatibility with DBAL < 3.2
+        // Compatibility with DBAL 2
        if (! method_exists(parent::class, 'setResultCache')) {
            $this->setResultCacheImpl(DoctrineProvider::wrap($cache));

@@ -510,6 +521,8 @@ class Configuration extends \Doctrine\DBAL\Configuration
     * Ensures that this Configuration instance contains settings that are
     * suitable for a production environment.
     *
+     * @deprecated
+     *
     * @return void
     *
     * @throws ProxyClassesAlwaysRegenerating
@@ -518,6 +531,13 @@ class Configuration extends \Doctrine\DBAL\Configuration
     */
    public function ensureProductionSettings()
    {
+        Deprecation::triggerIfCalledFromOutside(
+            'doctrine/orm',
+            'https://github.com/doctrine/orm/pull/9074',
+            '%s is deprecated',
+            __METHOD__
+        );
+
        $queryCacheImpl = $this->getQueryCacheImpl();

        if (! $queryCacheImpl) {
@@ -703,7 +723,7 @@ class Configuration extends \Doctrine\DBAL\Configuration
    /**
     * Sets the custom hydrator modes in one pass.
     *
-     * @param array<string, class-string> $modes An array of ($modeName => $hydrator).
+     * @param array<string, class-string<AbstractHydrator>> $modes An array of ($modeName => $hydrator).
     *
     * @return void
     */
@@ -722,7 +742,7 @@ class Configuration extends \Doctrine\DBAL\Configuration
     * @param string $modeName The hydration mode name.
     *
     * @return string|null The hydrator class name.
-     * @psalm-return ?class-string
+     * @psalm-return class-string<AbstractHydrator>|null
     */
    public function getCustomHydrationMode($modeName)
    {
@@ -734,7 +754,7 @@ class Configuration extends \Doctrine\DBAL\Configuration
     *
     * @param string $modeName The hydration mode name.
     * @param string $hydrator The hydrator class name.
-     * @psalm-param class-string $hydrator
+     * @psalm-param class-string<AbstractHydrator> $hydrator
     *
     * @return void
     */
@@ -1003,4 +1023,24 @@ class Configuration extends \Doctrine\DBAL\Configuration
    {
        $this->_attributes['defaultQueryHints'][$name] = $value;
    }
+
+    /**
+     * Gets a list of entity class names to be ignored by the SchemaTool
+     *
+     * @return list<class-string>
+     */
+    public function getSchemaIgnoreClasses(): array
+    {
+        return $this->_attributes['schemaIgnoreClasses'] ?? [];
+    }
+
+    /**
+     * Sets a list of entity class names to be ignored by the SchemaTool
+     *
+     * @param list<class-string> $schemaIgnoreClasses List of entity class names
+     */
+    public function setSchemaIgnoreClasses(array $schemaIgnoreClasses): void
+    {
+        $this->_attributes['schemaIgnoreClasses'] = $schemaIgnoreClasses;
+    }
 }
--- a/lib/Doctrine/ORM/Decorator/EntityManagerDecorator.php
+++ b/lib/Doctrine/ORM/Decorator/EntityManagerDecorator.php
@@ -8,7 +8,7 @@ use Doctrine\ORM\EntityManagerInterface;
 use Doctrine\ORM\Query\ResultSetMapping;
 use Doctrine\Persistence\ObjectManagerDecorator;

-use function get_class;
+use function get_debug_type;
 use function method_exists;
 use function sprintf;
 use function trigger_error;
@@ -17,12 +17,11 @@ use const E_USER_NOTICE;

 /**
 * Base class for EntityManager decorators
+ *
+ * @extends ObjectManagerDecorator<EntityManagerInterface>
 */
 abstract class EntityManagerDecorator extends ObjectManagerDecorator implements EntityManagerInterface
 {
-    /** @var EntityManagerInterface */
-    protected $wrapped;
-
    public function __construct(EntityManagerInterface $wrapped)
    {
        $this->wrapped = $wrapped;
@@ -67,7 +66,7 @@ abstract class EntityManagerDecorator extends ObjectManagerDecorator implements
    {
        if (! method_exists($this->wrapped, 'wrapInTransaction')) {
            trigger_error(
-                sprintf('Calling `transactional()` instead of `wrapInTransaction()` which is not implemented on %s', get_class($this->wrapped)),
+                sprintf('Calling `transactional()` instead of `wrapInTransaction()` which is not implemented on %s', get_debug_type($this->wrapped)),
                E_USER_NOTICE
            );

--- a/lib/Doctrine/ORM/EntityManager.php
+++ b/lib/Doctrine/ORM/EntityManager.php
@@ -32,7 +32,7 @@ use Throwable;

 use function array_keys;
 use function call_user_func;
-use function get_class;
+use function get_debug_type;
 use function gettype;
 use function is_array;
 use function is_callable;
@@ -120,7 +120,7 @@ use function sprintf;
    /**
     * The expression builder instance used to generate query expressions.
     *
-     * @var Expr
+     * @var Expr|null
     */
    private $expressionBuilder;

@@ -134,11 +134,15 @@ use function sprintf;
    /**
     * Collection of query filters.
     *
-     * @var FilterCollection
+     * @var FilterCollection|null
     */
    private $filterCollection;

-    /** @var Cache The second level cache regions API. */
+    /**
+     * The second level cache regions API.
+     *
+     * @var Cache|null
+     */
    private $cache;

    /**
@@ -399,6 +403,7 @@ use function sprintf;
     * @param int|null $lockVersion The version of the entity to find when using
     * optimistic locking.
     * @psalm-param class-string<T> $className
+     * @psalm-param LockMode::*|null $lockMode
     *
     * @return object|null The entity instance or NULL if the entity can not be found.
     * @psalm-return ?T
@@ -944,7 +949,7 @@ use function sprintf;
            throw new InvalidArgumentException(
                sprintf(
                    'Invalid $connection argument of type %s given%s.',
-                    is_object($connection) ? get_class($connection) : gettype($connection),
+                    get_debug_type($connection),
                    is_object($connection) ? '' : ': "' . $connection . '"'
                )
            );
@@ -986,6 +991,8 @@ use function sprintf;
    }

    /**
+     * @psalm-param LockMode::* $lockMode
+     *
     * @throws OptimisticLockException
     * @throws TransactionRequiredException
     */
--- a/lib/Doctrine/ORM/EntityManagerInterface.php
+++ b/lib/Doctrine/ORM/EntityManagerInterface.php
@@ -8,6 +8,7 @@ use BadMethodCallException;
 use DateTimeInterface;
 use Doctrine\Common\EventManager;
 use Doctrine\DBAL\Connection;
+use Doctrine\DBAL\LockMode;
 use Doctrine\ORM\Internal\Hydration\AbstractHydrator;
 use Doctrine\ORM\Proxy\ProxyFactory;
 use Doctrine\ORM\Query\Expr;
@@ -237,6 +238,7 @@ interface EntityManagerInterface extends ObjectManager
     * @param object                     $entity
     * @param int                        $lockMode
     * @param int|DateTimeInterface|null $lockVersion
+     * @psalm-param LockMode::* $lockMode
     *
     * @return void
     *
@@ -282,6 +284,7 @@ interface EntityManagerInterface extends ObjectManager
     * @deprecated
     *
     * @param string|int $hydrationMode
+     * @psalm-param string|AbstractQuery::HYDRATE_* $hydrationMode
     *
     * @return AbstractHydrator
     */
@@ -291,6 +294,7 @@ interface EntityManagerInterface extends ObjectManager
     * Create a new instance for the given hydration mode.
     *
     * @param string|int $hydrationMode
+     * @psalm-param string|AbstractQuery::HYDRATE_* $hydrationMode
     *
     * @return AbstractHydrator
     *
--- a/lib/Doctrine/ORM/EntityNotFoundException.php
+++ b/lib/Doctrine/ORM/EntityNotFoundException.php
@@ -37,8 +37,6 @@ class EntityNotFoundException extends ORMException

    /**
     * Instance for which no identifier can be found
-     *
-     * @psalm-param class-string $className
     */
    public static function noIdentifierFound(string $className): self
    {
--- a/lib/Doctrine/ORM/EntityRepository.php
+++ b/lib/Doctrine/ORM/EntityRepository.php
@@ -8,13 +8,13 @@ use BadMethodCallException;
 use Doctrine\Common\Collections\Collection;
 use Doctrine\Common\Collections\Criteria;
 use Doctrine\Common\Collections\Selectable;
+use Doctrine\DBAL\LockMode;
 use Doctrine\Deprecations\Deprecation;
 use Doctrine\Inflector\Inflector;
 use Doctrine\Inflector\InflectorFactory;
 use Doctrine\ORM\Mapping\ClassMetadata;
 use Doctrine\ORM\Query\ResultSetMappingBuilder;
 use Doctrine\ORM\Repository\Exception\InvalidMagicMethodCall;
-use Doctrine\ORM\Repository\InvalidFindByCall;
 use Doctrine\Persistence\ObjectRepository;

 use function array_slice;
@@ -39,7 +39,7 @@ class EntityRepository implements ObjectRepository, Selectable
    /** @var string */
    protected $_entityName;

-    /** @var EntityManager */
+    /** @var EntityManagerInterface */
    protected $_em;

    /** @var ClassMetadata */
@@ -165,6 +165,7 @@ class EntityRepository implements ObjectRepository, Selectable
     *                              or NULL if no specific lock mode should be used
     *                              during the search.
     * @param int|null $lockVersion The lock version.
+     * @psalm-param LockMode::*|null $lockMode
     *
     * @return object|null The entity instance or NULL if the entity can not be found.
     * @psalm-return ?T
@@ -281,7 +282,7 @@ class EntityRepository implements ObjectRepository, Selectable
    }

    /**
-     * @return EntityManager
+     * @return EntityManagerInterface
     */
    protected function getEntityManager()
    {
--- a/lib/Doctrine/ORM/Event/LifecycleEventArgs.php
+++ b/lib/Doctrine/ORM/Event/LifecycleEventArgs.php
@@ -4,7 +4,7 @@ declare(strict_types=1);

 namespace Doctrine\ORM\Event;

-use Doctrine\ORM\EntityManager;
+use Doctrine\ORM\EntityManagerInterface;
 use Doctrine\Persistence\Event\LifecycleEventArgs as BaseLifecycleEventArgs;

 /**
@@ -28,7 +28,7 @@ class LifecycleEventArgs extends BaseLifecycleEventArgs
    /**
     * Retrieves associated EntityManager.
     *
-     * @return EntityManager
+     * @return EntityManagerInterface
     */
    public function getEntityManager()
    {
--- a/lib/Doctrine/ORM/Event/LoadClassMetadataEventArgs.php
+++ b/lib/Doctrine/ORM/Event/LoadClassMetadataEventArgs.php
@@ -4,14 +4,14 @@ declare(strict_types=1);

 namespace Doctrine\ORM\Event;

-use Doctrine\ORM\EntityManager;
+use Doctrine\ORM\EntityManagerInterface;
 use Doctrine\ORM\Mapping\ClassMetadata;
 use Doctrine\Persistence\Event\LoadClassMetadataEventArgs as BaseLoadClassMetadataEventArgs;

 /**
 * Class that holds event arguments for a loadMetadata event.
 *
- * @method __construct(ClassMetadata $classMetadata, EntityManager $objectManager)
+ * @method __construct(ClassMetadata $classMetadata, EntityManagerInterface $objectManager)
 * @method ClassMetadata getClassMetadata()
 */
 class LoadClassMetadataEventArgs extends BaseLoadClassMetadataEventArgs
@@ -19,7 +19,7 @@ class LoadClassMetadataEventArgs extends BaseLoadClassMetadataEventArgs
    /**
     * Retrieve associated EntityManager.
     *
-     * @return EntityManager
+     * @return EntityManagerInterface
     */
    public function getEntityManager()
    {
--- a/lib/Doctrine/ORM/Event/PostFlushEventArgs.php
+++ b/lib/Doctrine/ORM/Event/PostFlushEventArgs.php
@@ -5,7 +5,6 @@ declare(strict_types=1);
 namespace Doctrine\ORM\Event;

 use Doctrine\Common\EventArgs;
-use Doctrine\ORM\EntityManager;
 use Doctrine\ORM\EntityManagerInterface;

 /**
@@ -15,7 +14,7 @@ use Doctrine\ORM\EntityManagerInterface;
 */
 class PostFlushEventArgs extends EventArgs
 {
-    /** @var EntityManager */
+    /** @var EntityManagerInterface */
    private $em;

    public function __construct(EntityManagerInterface $em)
@@ -26,7 +25,7 @@ class PostFlushEventArgs extends EventArgs
    /**
     * Retrieves associated EntityManager.
     *
-     * @return EntityManager
+     * @return EntityManagerInterface
     */
    public function getEntityManager()
    {
--- a/lib/Doctrine/ORM/Event/PreFlushEventArgs.php
+++ b/lib/Doctrine/ORM/Event/PreFlushEventArgs.php
@@ -5,7 +5,6 @@ declare(strict_types=1);
 namespace Doctrine\ORM\Event;

 use Doctrine\Common\EventArgs;
-use Doctrine\ORM\EntityManager;
 use Doctrine\ORM\EntityManagerInterface;

 /**
@@ -15,7 +14,7 @@ use Doctrine\ORM\EntityManagerInterface;
 */
 class PreFlushEventArgs extends EventArgs
 {
-    /** @var EntityManager */
+    /** @var EntityManagerInterface */
    private $em;

    public function __construct(EntityManagerInterface $em)
@@ -24,7 +23,7 @@ class PreFlushEventArgs extends EventArgs
    }

    /**
-     * @return EntityManager
+     * @return EntityManagerInterface
     */
    public function getEntityManager()
    {
--- a/lib/Doctrine/ORM/Event/PreUpdateEventArgs.php
+++ b/lib/Doctrine/ORM/Event/PreUpdateEventArgs.php
@@ -8,7 +8,7 @@ use Doctrine\ORM\EntityManagerInterface;
 use Doctrine\ORM\PersistentCollection;
 use InvalidArgumentException;

-use function get_class;
+use function get_debug_type;
 use function sprintf;

 /**
@@ -108,7 +108,7 @@ class PreUpdateEventArgs extends LifecycleEventArgs
            throw new InvalidArgumentException(sprintf(
                'Field "%s" is not a valid field of the entity "%s" in PreUpdateEventArgs.',
                $field,
-                get_class($this->getEntity())
+                get_debug_type($this->getEntity())
            ));
        }
    }
--- a/lib/Doctrine/ORM/Exception/EntityManagerClosed.php
+++ b/lib/Doctrine/ORM/Exception/EntityManagerClosed.php
@@ -4,8 +4,6 @@ declare(strict_types=1);

 namespace Doctrine\ORM\Exception;

-use RuntimeException;
-
 final class EntityManagerClosed extends ORMException implements ManagerException
 {
    public static function create(): self
--- a/lib/Doctrine/ORM/Exception/EntityMissingAssignedId.php
+++ b/lib/Doctrine/ORM/Exception/EntityMissingAssignedId.php
@@ -4,7 +4,7 @@ declare(strict_types=1);

 namespace Doctrine\ORM\Exception;

-use function get_class;
+use function get_debug_type;

 final class EntityMissingAssignedId extends ORMException
 {
@@ -13,7 +13,7 @@ final class EntityMissingAssignedId extends ORMException
     */
    public static function forField($entity, string $field): self
    {
-        return new self('Entity of type ' . get_class($entity) . " is missing an assigned ID for field  '" . $field . "'. " .
+        return new self('Entity of type ' . get_debug_type($entity) . " is missing an assigned ID for field  '" . $field . "'. " .
            'The identifier generation strategy for this entity requires the ID field to be populated before ' .
            'EntityManager#persist() is called. If you want automatically generated identifiers instead ' .
            'you need to adjust the metadata mapping accordingly.');
--- a/lib/Doctrine/ORM/Exception/InvalidEntityRepository.php
+++ b/lib/Doctrine/ORM/Exception/InvalidEntityRepository.php
@@ -5,7 +5,6 @@ declare(strict_types=1);
 namespace Doctrine\ORM\Exception;

 use Doctrine\Persistence\ObjectRepository;
-use LogicException;

 final class InvalidEntityRepository extends ORMException implements ConfigurationException
 {
--- a/lib/Doctrine/ORM/Exception/MissingIdentifierField.php
+++ b/lib/Doctrine/ORM/Exception/MissingIdentifierField.php
@@ -4,8 +4,6 @@ declare(strict_types=1);

 namespace Doctrine\ORM\Exception;

-use LogicException;
-
 use function sprintf;

 final class MissingIdentifierField extends ORMException implements ManagerException
--- a/lib/Doctrine/ORM/Exception/MissingMappingDriverImplementation.php
+++ b/lib/Doctrine/ORM/Exception/MissingMappingDriverImplementation.php
@@ -4,8 +4,6 @@ declare(strict_types=1);

 namespace Doctrine\ORM\Exception;

-use LogicException;
-
 final class MissingMappingDriverImplementation extends ORMException implements ManagerException
 {
    public static function create(): self
--- a/lib/Doctrine/ORM/Exception/NamedQueryNotFound.php
+++ b/lib/Doctrine/ORM/Exception/NamedQueryNotFound.php
@@ -4,8 +4,6 @@ declare(strict_types=1);

 namespace Doctrine\ORM\Exception;

-use LogicException;
-
 use function sprintf;

 final class NamedQueryNotFound extends ORMException implements ConfigurationException
--- a/lib/Doctrine/ORM/Exception/ProxyClassesAlwaysRegenerating.php
+++ b/lib/Doctrine/ORM/Exception/ProxyClassesAlwaysRegenerating.php
@@ -4,8 +4,6 @@ declare(strict_types=1);

 namespace Doctrine\ORM\Exception;

-use LogicException;
-
 final class ProxyClassesAlwaysRegenerating extends ORMException implements ConfigurationException
 {
    public static function create(): self
--- a/lib/Doctrine/ORM/Exception/UnknownEntityNamespace.php
+++ b/lib/Doctrine/ORM/Exception/UnknownEntityNamespace.php
@@ -4,8 +4,6 @@ declare(strict_types=1);

 namespace Doctrine\ORM\Exception;

-use LogicException;
-
 use function sprintf;

 final class UnknownEntityNamespace extends ORMException implements ConfigurationException
--- a/lib/Doctrine/ORM/Exception/UnrecognizedIdentifierFields.php
+++ b/lib/Doctrine/ORM/Exception/UnrecognizedIdentifierFields.php
@@ -4,8 +4,6 @@ declare(strict_types=1);

 namespace Doctrine\ORM\Exception;

-use LogicException;
-
 use function implode;
 use function sprintf;

--- a/lib/Doctrine/ORM/Id/AbstractIdGenerator.php
+++ b/lib/Doctrine/ORM/Id/AbstractIdGenerator.php
@@ -4,10 +4,54 @@ declare(strict_types=1);

 namespace Doctrine\ORM\Id;

+use Doctrine\Deprecations\Deprecation;
 use Doctrine\ORM\EntityManager;
+use Doctrine\ORM\EntityManagerInterface;
+use InvalidArgumentException;
+use LogicException;
+
+use function get_debug_type;
+use function sprintf;

 abstract class AbstractIdGenerator
 {
+    /** @var bool */
+    private $alreadyDelegatedToGenerateId = false;
+
+    /**
+     * Generates an identifier for an entity.
+     *
+     * @deprecated Call {@see generateId()} instead.
+     *
+     * @param object|null $entity
+     *
+     * @return mixed
+     */
+    public function generate(EntityManager $em, $entity)
+    {
+        if ($this->alreadyDelegatedToGenerateId) {
+            throw new LogicException(sprintf(
+                'Endless recursion detected in %s. Please implement generateId() without calling the parent implementation.',
+                get_debug_type($this)
+            ));
+        }
+
+        Deprecation::trigger(
+            'doctrine/orm',
+            'https://github.com/doctrine/orm/pull/9325',
+            '%s::generate() is deprecated, call generateId() instead.',
+            get_debug_type($this)
+        );
+
+        $this->alreadyDelegatedToGenerateId = true;
+
+        try {
+            return $this->generateId($em, $entity);
+        } finally {
+            $this->alreadyDelegatedToGenerateId = false;
+        }
+    }
+
    /**
     * Generates an identifier for an entity.
     *
@@ -15,11 +59,26 @@ abstract class AbstractIdGenerator
     *
     * @return mixed
     */
-    abstract public function generate(EntityManager $em, $entity);
+    public function generateId(EntityManagerInterface $em, $entity)
+    {
+        Deprecation::trigger(
+            'doctrine/orm',
+            'https://github.com/doctrine/orm/pull/9325',
+            'Not implementing %s in %s is deprecated.',
+            __FUNCTION__,
+            get_debug_type($this)
+        );
+
+        if (! $em instanceof EntityManager) {
+            throw new InvalidArgumentException('Unsupported entity manager implementation.');
+        }
+
+        return $this->generate($em, $entity);
+    }

    /**
     * Gets whether this generator is a post-insert generator which means that
-     * {@link generate()} must be called after the entity has been inserted
+     * {@link generateId()} must be called after the entity has been inserted
     * into the database.
     *
     * By default, this method returns FALSE. Generators that have this requirement
--- a/lib/Doctrine/ORM/Id/AssignedGenerator.php
+++ b/lib/Doctrine/ORM/Id/AssignedGenerator.php
@@ -4,7 +4,7 @@ declare(strict_types=1);

 namespace Doctrine\ORM\Id;

-use Doctrine\ORM\EntityManager;
+use Doctrine\ORM\EntityManagerInterface;
 use Doctrine\ORM\Exception\EntityMissingAssignedId;

 use function get_class;
@@ -17,11 +17,11 @@ class AssignedGenerator extends AbstractIdGenerator
    /**
     * Returns the identifier assigned to the given entity.
     *
-     * {@inheritDoc}
+     * {@inheritdoc}
     *
     * @throws EntityMissingAssignedId
     */
-    public function generate(EntityManager $em, $entity)
+    public function generateId(EntityManagerInterface $em, $entity)
    {
        $class      = $em->getClassMetadata(get_class($entity));
        $idFields   = $class->getIdentifierFieldNames();
--- a/lib/Doctrine/ORM/Id/BigIntegerIdentityGenerator.php
+++ b/lib/Doctrine/ORM/Id/BigIntegerIdentityGenerator.php
@@ -4,7 +4,7 @@ declare(strict_types=1);

 namespace Doctrine\ORM\Id;

-use Doctrine\ORM\EntityManager;
+use Doctrine\ORM\EntityManagerInterface;

 /**
 * Id generator that obtains IDs from special "identity" columns. These are columns
@@ -16,7 +16,7 @@ class BigIntegerIdentityGenerator extends AbstractIdGenerator
    /**
     * The name of the sequence to pass to lastInsertId(), if any.
     *
-     * @var string
+     * @var string|null
     */
    private $sequenceName;

@@ -33,7 +33,7 @@ class BigIntegerIdentityGenerator extends AbstractIdGenerator
    /**
     * {@inheritDoc}
     */
-    public function generate(EntityManager $em, $entity)
+    public function generateId(EntityManagerInterface $em, $entity)
    {
        return (string) $em->getConnection()->lastInsertId($this->sequenceName);
    }
--- a/lib/Doctrine/ORM/Id/IdentityGenerator.php
+++ b/lib/Doctrine/ORM/Id/IdentityGenerator.php
@@ -4,7 +4,7 @@ declare(strict_types=1);

 namespace Doctrine\ORM\Id;

-use Doctrine\ORM\EntityManager;
+use Doctrine\ORM\EntityManagerInterface;

 /**
 * Id generator that obtains IDs from special "identity" columns. These are columns
@@ -33,7 +33,7 @@ class IdentityGenerator extends AbstractIdGenerator
    /**
     * {@inheritDoc}
     */
-    public function generate(EntityManager $em, $entity)
+    public function generateId(EntityManagerInterface $em, $entity)
    {
        return (int) $em->getConnection()->lastInsertId($this->sequenceName);
    }
--- a/lib/Doctrine/ORM/Id/SequenceGenerator.php
+++ b/lib/Doctrine/ORM/Id/SequenceGenerator.php
@@ -4,7 +4,8 @@ declare(strict_types=1);

 namespace Doctrine\ORM\Id;

-use Doctrine\ORM\EntityManager;
+use Doctrine\DBAL\Connections\PrimaryReadReplicaConnection;
+use Doctrine\ORM\EntityManagerInterface;
 use Serializable;

 use function serialize;
@@ -50,15 +51,18 @@ class SequenceGenerator extends AbstractIdGenerator implements Serializable
    /**
     * {@inheritDoc}
     */
-    public function generate(EntityManager $em, $entity)
+    public function generateId(EntityManagerInterface $em, $entity)
    {
        if ($this->_maxValue === null || $this->_nextValue === $this->_maxValue) {
            // Allocate new values
-            $conn = $em->getConnection();
-            $sql  = $conn->getDatabasePlatform()->getSequenceNextValSQL($this->_sequenceName);
+            $connection = $em->getConnection();
+            $sql        = $connection->getDatabasePlatform()->getSequenceNextValSQL($this->_sequenceName);

-            // Using `query` to force usage of the master server in MasterSlaveConnection
-            $this->_nextValue = (int) $conn->executeQuery($sql)->fetchOne();
+            if ($connection instanceof PrimaryReadReplicaConnection) {
+                $connection->ensureConnectedToPrimary();
+            }
+
+            $this->_nextValue = (int) $connection->executeQuery($sql)->fetchOne();
            $this->_maxValue  = $this->_nextValue + $this->_allocationSize;
        }

--- a/lib/Doctrine/ORM/Id/TableGenerator.php
+++ b/lib/Doctrine/ORM/Id/TableGenerator.php
@@ -4,7 +4,7 @@ declare(strict_types=1);

 namespace Doctrine\ORM\Id;

-use Doctrine\ORM\EntityManager;
+use Doctrine\ORM\EntityManagerInterface;

 /**
 * Id generator that uses a single-row database table and a hi/lo algorithm.
@@ -43,8 +43,8 @@ class TableGenerator extends AbstractIdGenerator
    /**
     * {@inheritDoc}
     */
-    public function generate(
-        EntityManager $em,
+    public function generateId(
+        EntityManagerInterface $em,
        $entity
    ) {
        if ($this->_maxValue === null || $this->_nextValue === $this->_maxValue) {
--- a/lib/Doctrine/ORM/Id/UuidGenerator.php
+++ b/lib/Doctrine/ORM/Id/UuidGenerator.php
@@ -4,9 +4,10 @@ declare(strict_types=1);

 namespace Doctrine\ORM\Id;

+use Doctrine\DBAL\Connections\PrimaryReadReplicaConnection;
 use Doctrine\DBAL\Platforms\AbstractPlatform;
 use Doctrine\Deprecations\Deprecation;
-use Doctrine\ORM\EntityManager;
+use Doctrine\ORM\EntityManagerInterface;
 use Doctrine\ORM\Exception\NotSupported;

 use function method_exists;
@@ -37,11 +38,15 @@ class UuidGenerator extends AbstractIdGenerator
     *
     * @throws NotSupported
     */
-    public function generate(EntityManager $em, $entity)
+    public function generateId(EntityManagerInterface $em, $entity)
    {
-        $conn = $em->getConnection();
-        $sql  = 'SELECT ' . $conn->getDatabasePlatform()->getGuidExpression();
+        $connection = $em->getConnection();
+        $sql        = 'SELECT ' . $connection->getDatabasePlatform()->getGuidExpression();

-        return $conn->executeQuery($sql)->fetchOne();
+        if ($connection instanceof PrimaryReadReplicaConnection) {
+            $connection->ensureConnectedToPrimary();
+        }
+
+        return $connection->executeQuery($sql)->fetchOne();
    }
 }
--- a/lib/Doctrine/ORM/Internal/Hydration/AbstractHydrator.php
+++ b/lib/Doctrine/ORM/Internal/Hydration/AbstractHydrator.php
@@ -228,7 +228,7 @@ abstract class AbstractHydrator
     * Hydrates all rows returned by the passed statement instance at once.
     *
     * @param Result|ResultStatement $stmt
-     * @param object                 $resultSetMapping
+     * @param ResultSetMapping       $resultSetMapping
     * @psalm-param array<string, string> $hints
     *
     * @return mixed[]
@@ -277,10 +277,19 @@ abstract class AbstractHydrator
     * Hydrates a single row returned by the current statement instance during
     * row-by-row hydration with {@link iterate()} or {@link toIterable()}.
     *
+     * @deprecated
+     *
     * @return mixed[]|false
     */
    public function hydrateRow()
    {
+        Deprecation::triggerIfCalledFromOutside(
+            'doctrine/orm',
+            'https://github.com/doctrine/orm/pull/9072',
+            '%s is deprecated.',
+            __METHOD__
+        );
+
        $row = $this->statement()->fetchAssociative();

        if ($row === false) {
--- a/lib/Doctrine/ORM/Internal/Hydration/SingleScalarHydrator.php
+++ b/lib/Doctrine/ORM/Internal/Hydration/SingleScalarHydrator.php
@@ -32,12 +32,12 @@ class SingleScalarHydrator extends AbstractHydrator
            throw new NonUniqueResultException('The query returned multiple rows. Change the query or use a different result function like getScalarResult().');
        }

-        if (count($data[key($data)]) > 1) {
+        $result = $this->gatherScalarRowData($data[key($data)]);
+
+        if (count($result) > 1) {
            throw new NonUniqueResultException('The query returned a row containing multiple columns. Change the query or use a different result function like getScalarResult().');
        }

-        $result = $this->gatherScalarRowData($data[key($data)]);
-
        return array_shift($result);
    }
 }
--- a/lib/Doctrine/ORM/Internal/SQLResultCasing.php
+++ b/lib/Doctrine/ORM/Internal/SQLResultCasing.php
@@ -7,7 +7,6 @@ namespace Doctrine\ORM\Internal;
 use Doctrine\DBAL\Platforms\AbstractPlatform;
 use Doctrine\DBAL\Platforms\DB2Platform;
 use Doctrine\DBAL\Platforms\OraclePlatform;
-use Doctrine\DBAL\Platforms\PostgreSQL94Platform;
 use Doctrine\DBAL\Platforms\PostgreSQLPlatform;

 use function method_exists;
@@ -25,7 +24,7 @@ trait SQLResultCasing
            return strtoupper($column);
        }

-        if ($platform instanceof PostgreSQL94Platform || $platform instanceof PostgreSQLPlatform) {
+        if ($platform instanceof PostgreSQLPlatform) {
            return strtolower($column);
        }

--- a/lib/Doctrine/ORM/LazyCriteriaCollection.php
+++ b/lib/Doctrine/ORM/LazyCriteriaCollection.php
@@ -9,6 +9,7 @@ use Doctrine\Common\Collections\ArrayCollection;
 use Doctrine\Common\Collections\Criteria;
 use Doctrine\Common\Collections\Selectable;
 use Doctrine\ORM\Persisters\Entity\EntityPersister;
+use ReturnTypeWillChange;

 /**
 * A lazy collection that allows a fast count when using criteria object
@@ -38,6 +39,7 @@ class LazyCriteriaCollection extends AbstractLazyCollection implements Selectabl
     *
     * @return int
     */
+    #[ReturnTypeWillChange]
    public function count()
    {
        if ($this->isInitialized()) {
--- a/lib/Doctrine/ORM/Mapping/AssociationOverride.php
+++ b/lib/Doctrine/ORM/Mapping/AssociationOverride.php
@@ -8,6 +8,7 @@ namespace Doctrine\ORM\Mapping;
 * This annotation is used to override association mapping of property for an entity relationship.
 *
 * @Annotation
+ * @NamedArgumentConstructor
 * @Target("ANNOTATION")
 */
 final class AssociationOverride implements Annotation
@@ -22,29 +23,64 @@ final class AssociationOverride implements Annotation
    /**
     * The join column that is being mapped to the persistent attribute.
     *
-     * @var array<\Doctrine\ORM\Mapping\JoinColumn>
+     * @var array<\Doctrine\ORM\Mapping\JoinColumn>|null
     */
    public $joinColumns;

+    /**
+     * The join column that is being mapped to the persistent attribute.
+     *
+     * @var array<\Doctrine\ORM\Mapping\JoinColumn>|null
+     */
+    public $inverseJoinColumns;
+
    /**
     * The join table that maps the relationship.
     *
-     * @var \Doctrine\ORM\Mapping\JoinTable
+     * @var \Doctrine\ORM\Mapping\JoinTable|null
     */
    public $joinTable;

    /**
     * The name of the association-field on the inverse-side.
     *
-     * @var string
+     * @var ?string
     */
    public $inversedBy;

    /**
     * The fetching strategy to use for the association.
     *
-     * @var string
+     * @var ?string
     * @Enum({"LAZY", "EAGER", "EXTRA_LAZY"})
     */
    public $fetch;
+
+    /**
+     * @param JoinColumn|array<JoinColumn> $joinColumns
+     * @param JoinColumn|array<JoinColumn> $inverseJoinColumns
+     */
+    public function __construct(
+        string $name,
+        $joinColumns = null,
+        $inverseJoinColumns = null,
+        ?JoinTable $joinTable = null,
+        ?string $inversedBy = null,
+        ?string $fetch = null
+    ) {
+        if ($joinColumns instanceof JoinColumn) {
+            $joinColumns = [$joinColumns];
+        }
+
+        if ($inverseJoinColumns instanceof JoinColumn) {
+            $inverseJoinColumns = [$inverseJoinColumns];
+        }
+
+        $this->name               = $name;
+        $this->joinColumns        = $joinColumns;
+        $this->inverseJoinColumns = $inverseJoinColumns;
+        $this->joinTable          = $joinTable;
+        $this->inversedBy         = $inversedBy;
+        $this->fetch              = $fetch;
+    }
 }
--- a/lib/Doctrine/ORM/Mapping/AssociationOverrides.php
+++ b/lib/Doctrine/ORM/Mapping/AssociationOverrides.php
@@ -4,18 +4,42 @@ declare(strict_types=1);

 namespace Doctrine\ORM\Mapping;

+use Attribute;
+
+use function is_array;
+
 /**
 * This annotation is used to override association mappings of relationship properties.
 *
 * @Annotation
+ * @NamedArgumentConstructor()
 * @Target("CLASS")
 */
+#[Attribute(Attribute::TARGET_CLASS)]
 final class AssociationOverrides implements Annotation
 {
    /**
     * Mapping overrides of relationship properties.
     *
-     * @var array<\Doctrine\ORM\Mapping\AssociationOverride>
+     * @var array<AssociationOverride>
     */
-    public $value;
+    public $overrides = [];
+
+    /**
+     * @param array<AssociationOverride>|AssociationOverride $overrides
+     */
+    public function __construct($overrides)
+    {
+        if (! is_array($overrides)) {
+            $overrides = [$overrides];
+        }
+
+        foreach ($overrides as $override) {
+            if (! ($override instanceof AssociationOverride)) {
+                throw MappingException::invalidOverrideType('AssociationOverride', $override);
+            }
+
+            $this->overrides[] = $override;
+        }
+    }
 }
--- a/lib/Doctrine/ORM/Mapping/AttributeOverride.php
+++ b/lib/Doctrine/ORM/Mapping/AttributeOverride.php
@@ -4,15 +4,13 @@ declare(strict_types=1);

 namespace Doctrine\ORM\Mapping;

-use Attribute;
-
 /**
 * This annotation is used to override the mapping of a entity property.
 *
 * @Annotation
+ * @NamedArgumentConstructor
 * @Target("ANNOTATION")
 */
-#[Attribute(Attribute::TARGET_CLASS | Attribute::IS_REPEATABLE)]
 final class AttributeOverride implements Annotation
 {
    /**
@@ -28,4 +26,10 @@ final class AttributeOverride implements Annotation
     * @var \Doctrine\ORM\Mapping\Column
     */
    public $column;
+
+    public function __construct(string $name, Column $column)
+    {
+        $this->name   = $name;
+        $this->column = $column;
+    }
 }
--- a/lib/Doctrine/ORM/Mapping/AttributeOverrides.php
+++ b/lib/Doctrine/ORM/Mapping/AttributeOverrides.php
@@ -4,18 +4,42 @@ declare(strict_types=1);

 namespace Doctrine\ORM\Mapping;

+use Attribute;
+
+use function is_array;
+
 /**
 * This annotation is used to override the mapping of a entity property.
 *
 * @Annotation
+ * @NamedArgumentConstructor()
 * @Target("CLASS")
 */
+#[Attribute(Attribute::TARGET_CLASS)]
 final class AttributeOverrides implements Annotation
 {
    /**
     * One or more field or property mapping overrides.
     *
-     * @var array<\Doctrine\ORM\Mapping\AttributeOverride>
+     * @var array<AttributeOverride>
     */
-    public $value;
+    public $overrides = [];
+
+    /**
+     * @param array<AttributeOverride>|AttributeOverride $overrides
+     */
+    public function __construct($overrides)
+    {
+        if (! is_array($overrides)) {
+            $overrides = [$overrides];
+        }
+
+        foreach ($overrides as $override) {
+            if (! ($override instanceof AttributeOverride)) {
+                throw MappingException::invalidOverrideType('AttributeOverride', $override);
+            }
+
+            $this->overrides[] = $override;
+        }
+    }
 }
--- a/lib/Doctrine/ORM/Mapping/Builder/ClassMetadataBuilder.php
+++ b/lib/Doctrine/ORM/Mapping/Builder/ClassMetadataBuilder.php
@@ -59,9 +59,9 @@ class ClassMetadataBuilder
    /**
     * Adds and embedded class
     *
-     * @param string      $fieldName
-     * @param string      $class
-     * @param string|null $columnPrefix
+     * @param string            $fieldName
+     * @param string            $class
+     * @param string|false|null $columnPrefix
     *
     * @return $this
     */
--- a/lib/Doctrine/ORM/Mapping/Builder/FieldBuilder.php
+++ b/lib/Doctrine/ORM/Mapping/Builder/FieldBuilder.php
@@ -110,6 +110,34 @@ class FieldBuilder
        return $this;
    }

+    /**
+     * Sets insertable.
+     *
+     * @return $this
+     */
+    public function insertable(bool $flag = true): self
+    {
+        if (! $flag) {
+            $this->mapping['notInsertable'] = true;
+        }
+
+        return $this;
+    }
+
+    /**
+     * Sets updatable.
+     *
+     * @return $this
+     */
+    public function updatable(bool $flag = true): self
+    {
+        if (! $flag) {
+            $this->mapping['notUpdatable'] = true;
+        }
+
+        return $this;
+    }
+
    /**
     * Sets scale.
     *
--- a/lib/Doctrine/ORM/Mapping/ClassMetadataFactory.php
+++ b/lib/Doctrine/ORM/Mapping/ClassMetadataFactory.php
@@ -20,7 +20,6 @@ use Doctrine\ORM\Id\SequenceGenerator;
 use Doctrine\ORM\Id\UuidGenerator;
 use Doctrine\ORM\Mapping\Exception\CannotGenerateIds;
 use Doctrine\ORM\Mapping\Exception\InvalidCustomGenerator;
-use Doctrine\ORM\Mapping\Exception\TableGeneratorNotImplementedYet;
 use Doctrine\ORM\Mapping\Exception\UnknownGeneratorType;
 use Doctrine\Persistence\Mapping\AbstractClassMetadataFactory;
 use Doctrine\Persistence\Mapping\ClassMetadata as ClassMetadataInterface;
@@ -46,9 +45,7 @@ use function substr;
 * metadata mapping information of a class which describes how a class should be mapped
 * to a relational database.
 *
- * @method ClassMetadata[] getAllMetadata()
- * @method ClassMetadata[] getLoadedMetadata()
- * @method ClassMetadata getMetadataFor($className)
+ * @extends AbstractClassMetadataFactory<ClassMetadata>
 */
 class ClassMetadataFactory extends AbstractClassMetadataFactory
 {
@@ -91,14 +88,16 @@ class ClassMetadataFactory extends AbstractClassMetadataFactory
    protected function onNotFoundMetadata($className)
    {
        if (! $this->evm->hasListeners(Events::onClassMetadataNotFound)) {
-            return;
+            return null;
        }

        $eventArgs = new OnClassMetadataNotFoundEventArgs($className, $this->em);

        $this->evm->dispatchEvent(Events::onClassMetadataNotFound, $eventArgs);
+        $classMetadata = $eventArgs->getFoundMetadata();
+        assert($classMetadata instanceof ClassMetadata || $classMetadata === null);

-        return $eventArgs->getFoundMetadata();
+        return $classMetadata;
    }

    /**
@@ -643,11 +642,13 @@ class ClassMetadataFactory extends AbstractClassMetadataFactory
        }
    }

+    /**
+     * @psalm-return ClassMetadata::GENERATOR_TYPE_SEQUENCE|ClassMetadata::GENERATOR_TYPE_IDENTITY
+     */
    private function determineIdGeneratorStrategy(AbstractPlatform $platform): int
    {
        if (
            $platform instanceof Platforms\OraclePlatform
-            || $platform instanceof Platforms\PostgreSQL94Platform
            || $platform instanceof Platforms\PostgreSQLPlatform
        ) {
            return ClassMetadata::GENERATOR_TYPE_SEQUENCE;
@@ -667,7 +668,7 @@ class ClassMetadataFactory extends AbstractClassMetadataFactory
    private function truncateSequenceName(string $schemaElementName): string
    {
        $platform = $this->getTargetPlatform();
-        if (! in_array($platform->getName(), ['oracle', 'sqlanywhere'], true)) {
+        if (! $platform instanceof Platforms\OraclePlatform && ! $platform instanceof Platforms\SQLAnywherePlatform) {
            return $schemaElementName;
        }

@@ -738,7 +739,7 @@ class ClassMetadataFactory extends AbstractClassMetadataFactory
     */
    protected function isEntity(ClassMetadataInterface $class)
    {
-        return isset($class->isMappedSuperclass) && $class->isMappedSuperclass === false;
+        return ! $class->isMappedSuperclass;
    }

    private function getTargetPlatform(): Platforms\AbstractPlatform
--- a/Show More
+++ b/Show More