bug #20745 [Validator] add class name to the cache key (Simperfit)

This PR was squashed before being merged into the 3.1 branch (closes #20745).

Discussion
----------

[Validator] add class name to the cache key

| Q             | A
| ------------- | ---
| Branch?       | 3.1
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets |  #20685
| License       | MIT
| Doc PR        |

Adding the class name to the cache key to avoid collision

Commits
-------

1681fc9 [Validator] add class name to the cache key

src/Symfony/Component/Validator/Tests/Constraints/Fixtures/ChildA.php

@@ -0,0 +1,30 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Validator\Tests\Constraints\Fixtures;
+
+use Symfony\Component\Validator\Constraints as Assert;
+
+class ChildA
+{
+    /**
+     * @Assert\Valid
+     * @Assert\NotNull
+     * @Assert\NotBlank
+     */
+    public $name;
+    /**
+     * @var ChildB
+     * @Assert\Valid
+     * @Assert\NotNull
+     */
+    public $childB;
+}

src/Symfony/Component/Validator/Tests/Constraints/Fixtures/ChildB.php

@@ -0,0 +1,29 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Validator\Tests\Constraints\Fixtures;
+
+use Symfony\Component\Validator\Constraints as Assert;
+
+class ChildB
+{
+    /**
+     * @Assert\Valid
+     * @Assert\NotBlank
+     */
+    public $name;
+    /**
+     * @var ChildA
+     * @Assert\Valid
+     * @Assert\NotBlank
+     */
+    public $childA;
+}

src/Symfony/Component/Validator/Tests/Fixtures/Entity.php

@@ -33,6 +33,14 @@ class Entity extends EntityParent implements EntityInterfaceB
      * @Assert\Choice(choices={"A", "B"}, message="Must be one of %choices%")
      */
     public $firstName;
+    /**
+     * @Assert\Valid
+     */
+    public $childA;
+    /**
+     * @Assert\Valid
+     */
+    public $childB;
     protected $lastName;
     public $reference;
     public $reference2;
@@ -97,4 +105,36 @@ class Entity extends EntityParent implements EntityInterfaceB
     public static function validateMeStatic($object, ExecutionContextInterface $context)
     {
     }
+
+    /**
+     * @return mixed
+     */
+    public function getChildA()
+    {
+        return $this->childA;
+    }
+
+    /**
+     * @param mixed $childA
+     */
+    public function setChildA($childA)
+    {
+        $this->childA = $childA;
+    }
+
+    /**
+     * @return mixed
+     */
+    public function getChildB()
+    {
+        return $this->childB;
+    }
+
+    /**
+     * @param mixed $childB
+     */
+    public function setChildB($childB)
+    {
+        $this->childB = $childB;
+    }
 }

src/Symfony/Component/Validator/Tests/Mapping/Loader/AnnotationLoaderTest.php

@@ -19,6 +19,7 @@ use Symfony\Component\Validator\Constraints\Collection;
 use Symfony\Component\Validator\Constraints\NotNull;
 use Symfony\Component\Validator\Constraints\Range;
 use Symfony\Component\Validator\Constraints\IsTrue;
+use Symfony\Component\Validator\Constraints\Valid;
 use Symfony\Component\Validator\Mapping\ClassMetadata;
 use Symfony\Component\Validator\Mapping\Loader\AnnotationLoader;
 use Symfony\Component\Validator\Tests\Fixtures\ConstraintA;
@@ -67,6 +68,8 @@ class AnnotationLoaderTest extends \PHPUnit_Framework_TestCase
             'message' => 'Must be one of %choices%',
             'choices' => array('A', 'B'),
         )));
+        $expected->addPropertyConstraint('childA', new Valid());
+        $expected->addPropertyConstraint('childB', new Valid());
         $expected->addGetterConstraint('lastName', new NotNull());
         $expected->addGetterConstraint('valid', new IsTrue());
         $expected->addGetterConstraint('permissions', new IsTrue());
@@ -137,6 +140,8 @@ class AnnotationLoaderTest extends \PHPUnit_Framework_TestCase
             'message' => 'Must be one of %choices%',
             'choices' => array('A', 'B'),
         )));
+        $expected->addPropertyConstraint('childA', new Valid());
+        $expected->addPropertyConstraint('childB', new Valid());
         $expected->addGetterConstraint('lastName', new NotNull());
         $expected->addGetterConstraint('valid', new IsTrue());
         $expected->addGetterConstraint('permissions', new IsTrue());

src/Symfony/Component/Validator/Tests/Validator/RecursiveValidatorTest.php

@@ -15,6 +15,8 @@ use Symfony\Component\Translation\IdentityTranslator;
 use Symfony\Component\Validator\ConstraintValidatorFactory;
 use Symfony\Component\Validator\Context\ExecutionContextFactory;
 use Symfony\Component\Validator\Mapping\Factory\MetadataFactoryInterface;
+use Symfony\Component\Validator\Tests\Constraints\Fixtures\ChildA;
+use Symfony\Component\Validator\Tests\Constraints\Fixtures\ChildB;
 use Symfony\Component\Validator\Tests\Fixtures\Entity;
 use Symfony\Component\Validator\Validator\RecursiveValidator;
 
@@ -34,6 +36,45 @@ class RecursiveValidatorTest extends AbstractTest
     public function testEmptyGroupsArrayDoesNotTriggerDeprecation()
     {
         $entity = new Entity();
+        $childA = new ChildA();
+        $childB = new ChildB();
+        $childA->name = false;
+        $childB->name = 'fake';
+        $entity->childA = array($childA);
+        $entity->childB = array($childB);
+        $validatorContext = $this->getMock('Symfony\Component\Validator\Validator\ContextualValidatorInterface');
+        $validatorContext
+            ->expects($this->once())
+            ->method('validate')
+            ->with($entity, null, array())
+            ->willReturnSelf();
+
+        $validator = $this
+            ->getMockBuilder('Symfony\Component\Validator\Validator\RecursiveValidator')
+            ->disableOriginalConstructor()
+            ->setMethods(array('startContext'))
+            ->getMock();
+        $validator
+            ->expects($this->once())
+            ->method('startContext')
+            ->willReturn($validatorContext);
+
+        $validator->validate($entity, null, array());
+    }
+
+    public function testRelationBetweenChildAAndChildB()
+    {
+        $entity = new Entity();
+        $childA = new ChildA();
+        $childB = new ChildB();
+
+        $childA->childB = $childB;
+        $childB->childA = $childA;
+
+        $childA->name = false;
+        $childB->name = 'fake';
+        $entity->childA = array($childA);
+        $entity->childB = array($childB);
 
         $validatorContext = $this->getMock('Symfony\Component\Validator\Validator\ContextualValidatorInterface');
         $validatorContext

src/Symfony/Component/Validator/Validator/RecursiveContextualValidator.php

@@ -224,7 +224,7 @@ class RecursiveContextualValidator implements ContextualValidatorInterface
             $this->validateGenericNode(
                 $propertyValue,
                 $object,
-                $cacheKey.':'.$propertyName,
+                $cacheKey.':'.get_class($object).':'.$propertyName,
                 $propertyMetadata,
                 $propertyPath,
                 $groups,
@@ -280,7 +280,7 @@ class RecursiveContextualValidator implements ContextualValidatorInterface
             $this->validateGenericNode(
                 $value,
                 $object,
-                $cacheKey.':'.$propertyName,
+                $cacheKey.':'.get_class($object).':'.$propertyName,
                 $propertyMetadata,
                 $propertyPath,
                 $groups,
@@ -589,7 +589,7 @@ class RecursiveContextualValidator implements ContextualValidatorInterface
                 $this->validateGenericNode(
                     $propertyValue,
                     $object,
-                    $cacheKey.':'.$propertyName,
+                    $cacheKey.':'.get_class($object).':'.$propertyName,
                     $propertyMetadata,
                     PropertyPath::append($propertyPath, $propertyName),
                     $groups,