--- /dev/null
+<?php
+/*
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * This software consists of voluntary contributions made by many individuals
+ * and is licensed under the MIT license. For more information, see
+ * <http://www.doctrine-project.org>.
+ */
+
+namespace Doctrine\ORM\Tools;
+
+use Doctrine\ORM\Event\LoadClassMetadataEventArgs;
+use Doctrine\ORM\Mapping\ClassMetadata;
+
+/**
+ * ResolveTargetEntityListener
+ *
+ * Mechanism to overwrite interfaces or classes specified as association
+ * targets.
+ *
+ * @author Benjamin Eberlei <kontakt@beberlei.de>
+ * @since 2.2
+ */
+class ResolveTargetEntityListener
+{
+ /**
+ * @var array
+ */
+ private $resolveTargetEntities = array();
+
+ /**
+ * Add a target-entity class name to resolve to a new class name.
+ *
+ * @param string $originalEntity
+ * @param string $newEntity
+ * @param array $mapping
+ * @return void
+ */
+ public function addResolveTargetEntity($originalEntity, $newEntity, array $mapping)
+ {
+ $mapping['targetEntity'] = ltrim($newEntity, "\\");
+ $this->resolveTargetEntities[ltrim($originalEntity, "\\")] = $mapping;
+ }
+
+ /**
+ * Process event and resolve new target entity names.
+ *
+ * @param LoadClassMetadataEventArgs $args
+ * @return void
+ */
+ public function loadClassMetadata(LoadClassMetadataEventArgs $args)
+ {
+ $cm = $args->getClassMetadata();
+ foreach ($cm->associationMappings as $mapping) {
+ if (isset($this->resolveTargetEntities[$mapping['targetEntity']])) {
+ $this->remapAssociation($cm, $mapping);
+ }
+ }
+ }
+
+ private function remapAssociation($classMetadata, $mapping)
+ {
+ $newMapping = $this->resolveTargetEntities[$mapping['targetEntity']];
+ $newMapping = array_replace_recursive($mapping, $newMapping);
+ $newMapping['fieldName'] = $mapping['fieldName'];
+ unset($classMetadata->associationMappings[$mapping['fieldName']]);
+
+ switch ($mapping['type']) {
+ case ClassMetadata::MANY_TO_MANY:
+ $classMetadata->mapManyToMany($newMapping);
+ break;
+ case ClassMetadata::MANY_TO_ONE:
+ $classMetadata->mapManyToOne($newMapping);
+ break;
+ case ClassMetadata::ONE_TO_MANY:
+ $classMetadata->mapOneToMany($newMapping);
+ break;
+ case ClassMetadata::ONE_TO_ONE:
+ $classMetadata->mapOneToOne($newMapping);
+ break;
+ }
+ }
+}
+