<?php
/*
* $Id: UnitOfWork.php 4947 2008-09-12 13:16:05Z romanb $
*
* 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 LGPL. For more information, see
* <http://www.phpdoctrine.org>.
*/
#namespace Doctrine\ORM;
#use Doctrine\ORM\EntityManager;
#use Doctrine\ORM\Exceptions\UnitOfWorkException;
/**
* The UnitOfWork is responsible for tracking changes to objects during an
* "object-level" transaction and for writing out changes to the database
* in the correct order.
*
* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
* @link www.phpdoctrine.org
* @since 2.0
* @version $Revision$
* @author Roman Borschel <roman@code-factory.org>
*/
class Doctrine_ORM_UnitOfWork
{
/**
* An Entity is in managed state when it has a primary key/identifier (and
* therefore persistent state) and is managed by an EntityManager
* (registered in the identity map).
* In MANAGED state the entity is associated with an EntityManager that manages
* the persistent state of the Entity.
*/
const STATE_MANAGED = 1;
/**
* An Entity is new if it does not yet have an identifier/primary key
* and is not (yet) managed by an EntityManager.
*/
const STATE_NEW = 2;
/**
* An Entity is temporarily locked during deletes and saves.
*
* This state is used internally to ensure that circular deletes
* and saves will not cause infinite loops.
* @todo Not sure this is a good idea. It is a problematic solution because
* it hides the original state while the locked state is active.
*/
const STATE_LOCKED = 6;
/**
* A detached Entity is an instance with a persistent identity that is not
* (or no longer) associated with an EntityManager (and a UnitOfWork).
* This means its no longer in the identity map.
*/
const STATE_DETACHED = 3;
/**
* A removed Entity instance is an instance with a persistent identity,
* associated with an EntityManager, whose persistent state has been
* deleted (or is scheduled for deletion).
*/
const STATE_DELETED = 4;
/**
* The identity map that holds references to all managed entities that have
* an identity. The entities are grouped by their class name.
* Since all classes in a hierarchy must share the same identifier set,
* we always take the root class name of the hierarchy.
*
* @var array
*/
protected $_identityMap = array();
/**
* Map of all identifiers. Keys are object ids.
*
* @var array
*/
private $_entityIdentifiers = array();
/**
* Map of the original entity data of entities fetched from the database.
* Keys are object ids. This is used for calculating changesets at commit time.
* Note that PHPs "copy-on-write" behavior helps a lot with the potentially
* high memory usage.
*
* @var array
*/
protected $_originalEntityData = array();
/**
* Map of data changes. Keys are object ids.
* Filled at the beginning of a commit() of the UnitOfWork and cleaned at the end.
*
* @var array
*/
protected $_dataChangeSets = array();
/**
* The states of entities in this UnitOfWork.
*
* @var array
*/
protected $_entityStates = array();
/**
* A list of all new entities that need to be INSERTed.
*
* @var array
* @todo Index by class name.
* @todo Rename to _inserts?
*/
protected $_newEntities = array();
/**
* A list of all dirty entities that need to be UPDATEd.
*
* @var array
* @todo Rename to _updates?
*/
protected $_dirtyEntities = array();
/**
* A list of all deleted entities.
* Removed entities are entities that are "scheduled for removal" but have
* not yet been removed from the database.
*
* @var array
* @todo Rename to _deletions?
*/
protected $_deletedEntities = array();
/**
* All collection deletions.
*
* @var array
*/
protected $_collectionDeletions = array();
/**
* All collection creations.
*
* @var array
*/
protected $_collectionCreations = array();
/**
* All collection updates.
*
* @var array
*/
protected $_collectionUpdates = array();
/**
* The EntityManager the UnitOfWork belongs to.
*
* @var Doctrine\ORM\EntityManager
*/
protected $_em;
/**
* The calculator used to calculate the order in which changes to
* entities need to be written to the database.
*
* @var Doctrine\ORM\Internal\CommitOrderCalculator
*/
protected $_commitOrderCalculator;
/**
* Constructor.
* Creates a new UnitOfWork.
*
* @param Doctrine\ORM\EntityManager $em
*/
public function __construct(Doctrine_ORM_EntityManager $em)
{
$this->_em = $em;
//TODO: any benefit with lazy init?
$this->_commitOrderCalculator = new Doctrine_ORM_Internal_CommitOrderCalculator();
}
/**
* Commits the unit of work, executing all operations that have been postponed
* up to this point.
*
* @return void
*/
public function commit()
{
// Compute changes in managed entities
$this->computeDataChangeSet();
if (empty($this->_newEntities) &&
empty($this->_deletedEntities) &&
empty($this->_dirtyEntities)) {
return; // Nothing to do.
}
// Now we need a commit order to maintain referential integrity
$commitOrder = $this->_getCommitOrder();
//TODO: begin transaction here?
foreach ($commitOrder as $class) {
$this->_executeInserts($class);
}
foreach ($commitOrder as $class) {
$this->_executeUpdates($class);
}
//TODO: collection deletions
//TODO: collection updates (deleteRows, updateRows, insertRows)
//TODO: collection recreations
// Entity deletions come last and need to be in reverse commit order
for ($count = count($commitOrder), $i = $count - 1; $i >= 0; $i--) {
$this->_executeDeletions($commitOrder[$i]);
}
//TODO: commit transaction here?
// clear up
$this->_newEntities = array();
$this->_dirtyEntities = array();
$this->_deletedEntities = array();
$this->_dataChangeSets = array();
}
/**
* Gets the data changeset for an entity.
*
* @return array
*/
public function getDataChangeSet($entity)
{
$oid = spl_object_hash($entity);
if (isset($this->_dataChangeSets[$oid])) {
return $this->_dataChangeSets[$oid];
}
return array();
}
/**
* Computes all the changes that have been done to entities in the identity map
* and stores these changes in _dataChangeSet temporarily for access by the
* peristers, until the UoW commit is finished.
*
* @param array $entities The entities for which to compute the changesets. If this
* parameter is not specified, the changesets of all entities in the identity
* map are computed.
* @return void
*/
public function computeDataChangeSet(array $entities = null)
{
$entitySet = array();
if ( ! is_null($entities)) {
foreach ($entities as $entity) {
$className = get_class($entity);
if ( ! isset($entitySet[$className])) {
$entitySet[$className] = array();
}
$entitySet[$className][] = $entity;
}
} else {
$entitySet = $this->_identityMap;
}
foreach ($entitySet as $className => $entities) {
$class = $this->_em->getClassMetadata($className);
foreach ($entities as $entity) {
$oid = spl_object_hash($entity);
if ($this->getEntityState($entity) == self::STATE_MANAGED) {
if ( ! $class->isInheritanceTypeNone()) {
$class = $this->_em->getClassMetadata(get_class($entity));
}
$actualData = array();
foreach ($class->getReflectionProperties() as $name => $refProp) {
$actualData[$name] = $refProp->getValue($entity);
}
if ( ! isset($this->_originalEntityData[$oid])) {
$this->_dataChangeSets[$oid] = $actualData;
} else {
$originalData = $this->_originalEntityData[$oid];
$changeSet = array();
foreach ($actualData as $propName => $actualValue) {
$orgValue = isset($originalData[$propName]) ? $originalData[$propName] : null;
if (is_object($orgValue) && $orgValue !== $actualValue) {
$changeSet[$propName] = array($orgValue => $actualValue);
} else if ($orgValue != $actualValue || (is_null($orgValue) xor is_null($actualValue))) {
$changeSet[$propName] = array($orgValue => $actualValue);
}
}
$this->_dirtyEntities[$oid] = $entity;
$this->_dataChangeSets[$oid] = $changeSet;
}
}
if (isset($this->_dirtyEntities[$oid])) {
$this->_originalEntityData[$oid] = $actualData;
}
}
}
}
/**
* Executes all entity insertions for entities of the specified type.
*
* @param Doctrine\ORM\Mapping\ClassMetadata $class
*/
private function _executeInserts($class)
{
//TODO: Maybe $persister->addInsert($entity) in the loop and
// $persister->executeInserts() at the end to allow easy prepared
// statement reuse and maybe bulk operations in the persister.
// Same for update/delete.
$className = $class->getClassName();
$persister = $this->_em->getEntityPersister($className);
foreach ($this->_newEntities as $entity) {
if (get_class($entity) == $className) {
$returnVal = $persister->insert($entity);
if ( ! is_null($returnVal)) {
$oid = spl_object_hash($entity);
$class->getReflectionProperty($class->getSingleIdentifierFieldName())
->setValue($entity, $returnVal);
$this->_entityIdentifiers[$oid] = array($returnVal);
$this->_entityStates[$oid] = self::STATE_MANAGED;
$this->addToIdentityMap($entity);
}
}
}
}
/**
* Executes all entity updates for entities of the specified type.
*
* @param Doctrine\ORM\Mapping\ClassMetadata $class
*/
private function _executeUpdates($class)
{
$className = $class->getClassName();
$persister = $this->_em->getEntityPersister($className);
foreach ($this->_dirtyEntities as $entity) {
if ($entity->getClass()->getClassName() == $className) {
$persister->update($entity);
}
}
}
/**
* Executes all entity deletions for entities of the specified type.
*
* @param Doctrine\ORM\Mapping\ClassMetadata $class
*/
private function _executeDeletions($class)
{
$className = $class->getClassName();
$persister = $this->_em->getEntityPersister($className);
foreach ($this->_deletedEntities as $entity) {
if ($entity->getClass()->getClassName() == $className) {
$persister->delete($entity);
}
}
}
/**
* Gets the commit order.
*
* @return array
*/
private function _getCommitOrder(array $entityChangeSet = null)
{
//TODO: Once these 3 arrays are indexed by classname we can do this:
// Either way... do we need to care about duplicates?
/*$classesInChangeSet = array_merge(
array_keys($this->_newEntities),
array_keys($this->_dirtyEntities),
array_keys($this->_deletedEntities)
);*/
if (is_null($entityChangeSet)) {
$entityChangeSet = array_merge($this->_newEntities, $this->_dirtyEntities, $this->_deletedEntities);
}
/* if (count($entityChangeSet) == 1) {
* return array($entityChangeSet[0]->getClass());
* }
*/
// See if there are any new classes in the changeset, that are not in the
// commit order graph yet (dont have a node).
$newNodes = array();
foreach ($entityChangeSet as $entity) {
$className = get_class($entity);
if ( ! $this->_commitOrderCalculator->hasNodeWithKey($className)) {
$this->_commitOrderCalculator->addNodeWithItem(
$className, // index/key
$this->_em->getClassMetadata($className) // item
);
$newNodes[] = $this->_commitOrderCalculator->getNodeForKey($className);
}
}
// Calculate dependencies for new nodes
foreach ($newNodes as $node) {
$class = $node->getClass();
foreach ($class->getAssociationMappings() as $assocMapping) {
//TODO: should skip target classes that are not in the changeset.
if ($assocMapping->isOwningSide()) {
$targetClass = $this->_em->getClassMetadata($assocMapping->getTargetEntityName());
$targetClassName = $targetClass->getClassName();
// if the target class does not yet have a node, create it
if ( ! $this->_commitOrderCalculator->hasNodeWithKey($targetClassName)) {
$this->_commitOrderCalculator->addNodeWithItem(
$targetClassName, // index/key
$targetClass // item
);
}
// add dependency
$otherNode = $this->_commitOrderCalculator->getNodeForKey($targetClassName);
$otherNode->before($node);
}
}
}
return $this->_commitOrderCalculator->getCommitOrder();
}
/**
* Register a new entity.
*
* @todo Rename to scheduleForInsert().
*/
public function registerNew($entity)
{
$oid = spl_object_hash($entity);
if (isset($this->_dirtyEntities[$oid])) {
throw new Doctrine_Connection_Exception("Dirty object can't be registered as new.");
}
if (isset($this->_deletedEntities[$oid])) {
throw new Doctrine_Connection_Exception("Removed object can't be registered as new.");
}
if (isset($this->_newEntities[$oid])) {
throw new Doctrine_Connection_Exception("Object already registered as new. Can't register twice.");
}
$this->_newEntities[$oid] = $entity;
if (isset($this->_entityIdentifiers[$oid])) {
$this->addToIdentityMap($entity);
}
}
/**
* Checks whether an entity is registered as new on the unit of work.
*
* @param Doctrine\ORM\Entity $entity
* @return boolean
* @todo Rename to isScheduledForInsert().
*/
public function isRegisteredNew($entity)
{
return isset($this->_newEntities[spl_object_hash($entity)]);
}
/**
* Registers a dirty entity.
*
* @param Doctrine\ORM\Entity $entity
* @todo Rename to scheduleForUpdate().
*/
public function registerDirty($entity)
{
$oid = spl_object_hash($entity);
if ( ! isset($this->_entityIdentifiers[$oid])) {
throw new Doctrine_Exception("Entity without identity "
. "can't be registered as dirty.");
}
if (isset($this->_deletedEntities[$oid])) {
throw new Doctrine_Exception("Removed object can't be registered as dirty.");
}
if ( ! isset($this->_dirtyEntities[$oid]) && ! isset($this->_newEntities[$oid])) {
$this->_dirtyEntities[$oid] = $entity;
}
}
/**
* Checks whether an entity is registered as dirty in the unit of work.
* Note: Is not very useful currently as dirty entities are only registered
* at commit time.
*
* @param Doctrine_Entity $entity
* @return boolean
* @todo Rename to isScheduledForUpdate().
*/
public function isRegisteredDirty($entity)
{
return isset($this->_dirtyEntities[spl_object_hash($entity)]);
}
/**
* Registers a deleted entity.
*
* @todo Rename to scheduleForDelete().
*/
public function registerDeleted($entity)
{
$oid = spl_object_hash($entity);
if ( ! $this->isInIdentityMap($entity)) {
return;
}
$this->removeFromIdentityMap($entity);
$className = get_class($entity);
if (isset($this->_newEntities[$oid])) {
unset($this->_newEntities[$oid]);
return; // entity has not been persisted yet, so nothing more to do.
}
if (isset($this->_dirtyEntities[$oid])) {
unset($this->_dirtyEntities[$oid]);
}
if ( ! isset($this->_deletedEntities[$oid])) {
$this->_deletedEntities[$oid] = $entity;
}
}
/**
* Checks whether an entity is registered as removed/deleted with the unit
* of work.
*
* @param Doctrine\ORM\Entity $entity
* @return boolean
* @todo Rename to isScheduledForDelete().
*/
public function isRegisteredRemoved($entity)
{
return isset($this->_deletedEntities[spl_object_hash($entity)]);
}
/**
* Detaches an entity from the persistence management. It's persistence will
* no longer be managed by Doctrine.
*
* @param integer $oid object identifier
* @return boolean whether ot not the operation was successful
*/
public function detach($entity)
{
$oid = spl_object_hash($entity);
$this->removeFromIdentityMap($entity);
unset($this->_newEntities[$oid], $this->_dirtyEntities[$oid],
$this->_deletedEntities[$oid], $this->_entityIdentifiers[$oid],
$this->_entityStates[$oid]);
}
/**
* Enter description here...
*
* @param Doctrine\ORM\Entity $entity
* @return unknown
* @todo Rename to isScheduled()
*/
public function isEntityRegistered($entity)
{
$oid = spl_object_hash($entity);
return isset($this->_newEntities[$oid]) ||
isset($this->_dirtyEntities[$oid]) ||
isset($this->_deletedEntities[$oid]);
}
/**
* Detaches all currently managed entities.
* Alternatively, if an entity class name is given, all entities of that type
* (or subtypes) are detached. Don't forget that entities are registered in
* the identity map with the name of the root entity class. So calling detachAll()
* with a class name that is not the name of a root entity has no effect.
*
* @return integer The number of detached entities.
*/
public function detachAll($entityName = null)
{
//TODO: what do do with new/dirty/removed lists?
$numDetached = 0;
if ($entityName !== null && isset($this->_identityMap[$entityName])) {
$numDetached = count($this->_identityMap[$entityName]);
foreach ($this->_identityMap[$entityName] as $entity) {
$this->detach($entity);
}
$this->_identityMap[$entityName] = array();
} else {
$numDetached = count($this->_identityMap);
$this->_identityMap = array();
$this->_newEntities = array();
$this->_dirtyEntities = array();
$this->_deletedEntities = array();
}
return $numDetached;
}
/**
* Registers an entity in the identity map.
* Note that entities in a hierarchy are registered with the class name of
* the root entity.
*
* @param Doctrine\ORM\Entity $entity The entity to register.
* @return boolean TRUE if the registration was successful, FALSE if the identity of
* the entity in question is already managed.
*/
public function addToIdentityMap($entity)
{
$classMetadata = $this->_em->getClassMetadata(get_class($entity));
$idHash = $this->getIdentifierHash($this->_entityIdentifiers[spl_object_hash($entity)]);
if ($idHash === '') {
throw new Doctrine_Exception("Entity with oid '" . spl_object_hash($entity)
. "' has no identity and therefore can't be added to the identity map.");
}
$className = $classMetadata->getRootClassName();
if (isset($this->_identityMap[$className][$idHash])) {
return false;
}
$this->_identityMap[$className][$idHash] = $entity;
return true;
}
/**
* Gets the state of an entity within the current unit of work.
*
* @param Doctrine\ORM\Entity $entity
* @return int
*/
public function getEntityState($entity)
{
$oid = spl_object_hash($entity);
if ( ! isset($this->_entityStates[$oid])) {
if (isset($this->_entityIdentifiers[$oid])) {
$this->_entityStates[$oid] = self::STATE_DETACHED;
} else {
$this->_entityStates[$oid] = self::STATE_NEW;
}
}
return $this->_entityStates[$oid];
}
/**
* Removes an entity from the identity map. This effectively detaches the
* entity from the persistence management of Doctrine.
*
* @param Doctrine\ORM\Entity $entity
* @return boolean
*/
public function removeFromIdentityMap($entity)
{
$oid = spl_object_hash($entity);
$classMetadata = $this->_em->getClassMetadata(get_class($entity));
$idHash = $this->getIdentifierHash($this->_entityIdentifiers[$oid]);
if ($idHash === '') {
throw new Doctrine_Exception("Entity with oid '" . spl_object_hash($entity)
. "' has no identity and therefore can't be removed from the identity map.");
}
$className = $classMetadata->getRootClassName();
if (isset($this->_identityMap[$className][$idHash])) {
unset($this->_identityMap[$className][$idHash]);
$this->_entityStates[$oid] = self::STATE_DETACHED;
return true;
}
return false;
}
/**
* Gets an entity in the identity map by its identifier hash.
*
* @param string $idHash
* @param string $rootClassName
* @return Doctrine\ORM\Entity
*/
public function getByIdHash($idHash, $rootClassName)
{
return $this->_identityMap[$rootClassName][$idHash];
}
/**
* Tries to get an entity by its identifier hash. If no entity is found for
* the given hash, FALSE is returned.
*
* @param string $idHash
* @param string $rootClassName
* @return mixed The found entity or FALSE.
*/
public function tryGetByIdHash($idHash, $rootClassName)
{
if ($this->containsIdHash($idHash, $rootClassName)) {
return $this->getByIdHash($idHash, $rootClassName);
}
return false;
}
/**
* Gets the identifier hash for a set of identifier values.
* The hash is just a concatenation of the identifier values.
* The identifiers are concatenated with a space.
*
* Note that this method always returns a string. If the given array is
* empty, an empty string is returned.
*
* @param array $id
* @return string The hash.
*/
public function getIdentifierHash(array $id)
{
return implode(' ', $id);
}
/**
* Checks whether an entity is registered in the identity map of the
* UnitOfWork.
*
* @param object $entity
* @return boolean
*/
public function isInIdentityMap($entity)
{
$oid = spl_object_hash($entity);
if ( ! isset($this->_entityIdentifiers[$oid])) {
return false;
}
$classMetadata = $this->_em->getClassMetadata(get_class($entity));
$idHash = $this->getIdentifierHash($this->_entityIdentifiers[$oid]);
if ($idHash === '') {
return false;
}
return isset($this->_identityMap
[$classMetadata->getRootClassName()]
[$idHash]
);
}
/**
* Checks whether an identifier hash exists in the identity map.
*
* @param string $idHash
* @param string $rootClassName
* @return boolean
*/
public function containsIdHash($idHash, $rootClassName)
{
return isset($this->_identityMap[$rootClassName][$idHash]);
}
/**
* Saves an entity as part of the current unit of work.
*
* @param Doctrine\ORM\Entity $entity The entity to save.
*/
public function save($entity)
{
$insertNow = array();
$visited = array();
$this->_doSave($entity, $visited, $insertNow);
if ( ! empty($insertNow)) {
// We have no choice. This means that there are new entities
// with an IDENTITY column key generation strategy.
$this->computeDataChangeSet($insertNow);
$commitOrder = $this->_getCommitOrder($insertNow);
foreach ($commitOrder as $class) {
$this->_executeInserts($class);
}
// remove them from _newEntities and _dataChangeSets
$this->_newEntities = array_diff_key($this->_newEntities, $insertNow);
$this->_dataChangeSets = array_diff_key($this->_dataChangeSets, $insertNow);
}
}
/**
* Saves an entity as part of the current unit of work.
* This method is internally called during save() cascades as it tracks
* the already visited entities to prevent infinite recursions.
*
* @param Doctrine\ORM\Entity $entity The entity to save.
* @param array $visited The already visited entities.
*/
private function _doSave($entity, array &$visited, array &$insertNow)
{
$oid = spl_object_hash($entity);
if (isset($visited[$oid])) {
return; // Prevent infinite recursion
}
$visited[$oid] = $entity; // mark visited
$class = $this->_em->getClassMetadata(get_class($entity));
switch ($this->getEntityState($entity)) {
case self::STATE_MANAGED:
// nothing to do
break;
case self::STATE_NEW:
$idGen = $this->_em->getIdGenerator($class->getClassName());
if ($idGen->isPostInsertGenerator()) {
$insertNow[$oid] = $entity;
} else {
$idValue = $idGen->generate($entity);
$this->_entityIdentifiers[$oid] = array($idValue);
$this->_entityStates[$oid] = self::STATE_MANAGED;
if ( ! $idGen instanceof Doctrine_ORM_Id_Assigned) {
$class->getSingleIdReflectionProperty()->setValue($entity, $idValue);
}
}
$this->registerNew($entity);
break;
case self::STATE_DETACHED:
//exception?
throw new Doctrine_Exception("Behavior of save() for a detached entity "
. "is not yet defined.");
case self::STATE_DELETED:
// $entity becomes managed again
if ($this->isRegisteredRemoved($entity)) {
//TODO: better a method for this?
unset($this->_deletedEntities[$oid]);
} else {
//FIXME: There's more to think of here...
$this->registerNew($entity);
}
break;
default:
//TODO: throw UnitOfWorkException::invalidEntityState()
throw new Doctrine_Exception("Encountered invalid entity state.");
}
$this->_cascadeSave($entity, $visited, $insertNow);
}
/**
* Deletes an entity as part of the current unit of work.
*
* @param Doctrine_ORM_Entity $entity
*/
public function delete($entity)
{
$this->_doDelete($entity, array());
}
/**
* Enter description here...
*
* @param Doctrine\ORM\Entity $entity
* @param array $visited
*/
private function _doDelete($entity, array &$visited)
{
$oid = spl_object_hash($entity);
if (isset($visited[$oid])) {
return; // Prevent infinite recursion
}
$visited[$oid] = $entity; // mark visited
switch ($this->getEntityState($entity)) {
case self::STATE_NEW:
case self::STATE_DELETED:
// nothing to do for $entity
break;
case self::STATE_MANAGED:
$this->registerDeleted($entity);
break;
case self::STATE_DETACHED:
//exception?
throw new Doctrine_Exception("A detached entity can't be deleted.");
default:
//TODO: throw UnitOfWorkException::invalidEntityState()
throw new Doctrine_Exception("Encountered invalid entity state.");
}
$this->_cascadeDelete($entity, $visited);
}
/**
* Cascades the save operation to associated entities.
*
* @param Doctrine\ORM\Entity $entity
* @param array $visited
*/
private function _cascadeSave($entity, array &$visited, array &$insertNow)
{
$class = $this->_em->getClassMetadata(get_class($entity));
foreach ($class->getAssociationMappings() as $assocMapping) {
if ( ! $assocMapping->isCascadeSave()) {
echo "NOT cascade " . $assocMapping->getSourceFieldName();
continue;
}
$relatedEntities = $class->getReflectionProperty($assocMapping->getSourceFieldName())
->getValue($entity);
if ($relatedEntities instanceof Doctrine_ORM_Collection &&
count($relatedEntities) > 0) {
foreach ($relatedEntities as $relatedEntity) {
$this->_doSave($relatedEntity, $visited, $insertNow);
}
} else if (is_object($relatedEntities)) {
$this->_doSave($relatedEntities, $visited, $insertNow);
}
}
}
/**
* Cascades the delete operation to associated entities.
*
* @param Doctrine\ORM\Entity $entity
*/
private function _cascadeDelete($entity)
{
$class = $this->_em->getClassMetadata(get_class($entity));
foreach ($class->getAssociationMappings() as $assocMapping) {
if ( ! $assocMapping->isCascadeDelete()) {
continue;
}
$relatedEntities = $class->getReflectionProperty($assocMapping->getSourceFieldName())
->getValue($entity);
if ($relatedEntities instanceof Doctrine_ORM_Collection &&
count($relatedEntities) > 0) {
foreach ($relatedEntities as $relatedEntity) {
$this->_doDelete($relatedEntity, $visited, $insertNow);
}
} else if (is_object($relatedEntities)) {
$this->_doDelete($relatedEntities, $visited, $insertNow);
}
}
}
/**
* Gets the CommitOrderCalculator used by the UnitOfWork to order commits.
*
* @return Doctrine\ORM\Internal\CommitOrderCalculator
*/
public function getCommitOrderCalculator()
{
return $this->_commitOrderCalculator;
}
/**
* Closes the UnitOfWork.
*/
public function close()
{
//...
$this->_commitOrderCalculator->clear();
}
public function scheduleCollectionUpdate(Doctrine_ORM_Collection $coll)
{
$this->_collectionUpdates[] = $coll;
}
public function isCollectionScheduledForUpdate(Doctrine_ORM_Collection $coll)
{
//...
}
public function scheduleCollectionDeletion(Doctrine_ORM_Collection $coll)
{
//TODO: if $coll is already scheduled for recreation ... what to do?
// Just remove $coll from the scheduled recreations?
$this->_collectionDeletions[] = $coll;
}
public function isCollectionScheduledForDeletion(Doctrine_Collection $coll)
{
//...
}
public function scheduleCollectionRecreation(Doctrine_Collection $coll)
{
$this->_collectionRecreations[] = $coll;
}
public function isCollectionScheduledForRecreation(Doctrine_Collection $coll)
{
//...
}
/**
* Creates an entity. Used for reconstitution of entities during hydration.
*
* @param string $className The name of the entity class.
* @param array $data The data for the entity.
* @return Doctrine\ORM\Entity
* @internal Performance-sensitive method.
*/
public function createEntity($className, array $data, $query = null)
{
$className = $this->_inferCorrectClassName($data, $className);
$classMetadata = $this->_em->getClassMetadata($className);
$id = array();
if ($classMetadata->isIdentifierComposite()) {
$identifierFieldNames = $classMetadata->getIdentifier();
foreach ($identifierFieldNames as $fieldName) {
$id[] = $data[$fieldName];
}
$idHash = $this->getIdentifierHash($id);
} else {
$id = array($data[$classMetadata->getSingleIdentifierFieldName()]);
$idHash = $id[0];
}
$entity = $this->tryGetByIdHash($idHash, $classMetadata->getRootClassName());
if ($entity) {
$oid = spl_object_hash($entity);
$this->_mergeData($entity, $data, $classMetadata/*, $query->getHint('doctrine.refresh')*/);
return $entity;
} else {
$entity = new $className;
$oid = spl_object_hash($entity);
$this->_mergeData($entity, $data, $classMetadata, true);
$this->_entityIdentifiers[$oid] = $id;
$this->addToIdentityMap($entity);
}
$this->_originalEntityData[$oid] = $data;
return $entity;
}
/**
* Merges the given data into the given entity, optionally overriding
* local changes.
*
* @param Doctrine\ORM\Entity $entity
* @param array $data
* @param boolean $overrideLocalChanges
* @return void
*/
private function _mergeData($entity, array $data, $class, $overrideLocalChanges = false) {
if ($overrideLocalChanges) {
foreach ($data as $field => $value) {
$class->getReflectionProperty($field)->setValue($entity, $value);
}
} else {
$oid = spl_object_hash($entity);
foreach ($data as $field => $value) {
$currentValue = $class->getReflectionProperty($field)->getValue($entity);
if ( ! isset($this->_originalEntityData[$oid][$field]) ||
$currentValue == $this->_originalEntityData[$oid][$field]) {
$class->getReflectionProperty($field)->setValue($entity, $value);
}
}
}
}
/**
* Check the dataset for a discriminator column to determine the correct
* class to instantiate. If no discriminator column is found, the given
* classname will be returned.
*
* @param array $data
* @param string $className
* @return string The name of the class to instantiate.
*/
private function _inferCorrectClassName(array $data, $className)
{
$class = $this->_em->getClassMetadata($className);
$discCol = $class->getDiscriminatorColumn();
if ( ! $discCol) {
return $className;
}
$discMap = $class->getDiscriminatorMap();
if (isset($data[$discCol['name']], $discMap[$data[$discCol['name']]])) {
return $discMap[$data[$discCol['name']]];
} else {
return $className;
}
}
/**
* Gets the identity map of the UnitOfWork.
*
* @return array
*/
public function getIdentityMap()
{
return $this->_identityMap;
}
/**
* Gets the original data of an entity. The original data is the data that was
* present at the time the entity was reconstituted from the database.
*
* @param object $entity
* @return array
*/
public function getOriginalEntityData($entity)
{
$oid = spl_object_hash($entity);
if (isset($this->_originalEntityData[$oid])) {
return $this->_originalEntityData[$oid];
}
return array();
}
/**
* INTERNAL:
* For hydration purposes only.
*
* Sets a property of the original data array of an entity.
*
* @param string $oid
* @param string $property
* @param mixed $value
*/
public function setOriginalEntityProperty($oid, $property, $value)
{
$this->_originalEntityData[$oid][$property] = $value;
}
/**
* INTERNAL:
* For hydration purposes only.
*
* Adds a managed collection to the UnitOfWork. On commit time, the UnitOfWork
* checks all these managed collections for modifications and then initiates
* the appropriate database synchronization.
*
* @param Doctrine\ORM\Collection $coll
*/
public function addManagedCollection(Doctrine_ORM_Collection $coll)
{
}
/**
* Gets the identifier of an entity.
*
* @param object $entity
* @return array The identifier values.
*/
public function getEntityIdentifier($entity)
{
return $this->_entityIdentifiers[spl_object_hash($entity)];
}
}