/**
* Computes the changes done to a single entity.
*
* Modifies/populates the following properties:
*
* {@link _originalEntityData}
* If the entity is NEW or MANAGED but not yet fully persisted (only has an id)
* then it was not fetched from the database and therefore we have no original
* entity data yet. All of the current entity data is stored as the original entity data.
*
* {@link _entityChangeSets}
* The changes detected on all properties of the entity are stored there.
* A change is a tuple array where the first entry is the old value and the second
* entry is the new value of the property. Changesets are used by persisters
* to INSERT/UPDATE the persistent entity state.
*
* {@link _entityUpdates}
* If the entity is already fully MANAGED (has been fetched from the database before)
* and any changes to its properties are detected, then a reference to the entity is stored
* there to mark it for an update.
*
* {@link _collectionDeletions}
* If a PersistentCollection has been de-referenced in a fully MANAGED entity,
* then this collection is marked for deletion.
*
* @param ClassMetadata $class The class descriptor of the entity.
* @param object $entity The entity for which to compute the changes.
*/
private function _computeEntityChanges($class, $entity)
{
$oid = spl_object_hash($entity);
if (!$class->isInheritanceTypeNone()) {
$class = $this->_em->getClassMetadata(get_class($entity));
}
$actualData = array();
foreach ($class->reflFields as $name => $refProp) {
if (!$class->isIdentifier($name) || !$class->isIdGeneratorIdentity()) {
$actualData[$name] = $refProp->getValue($entity);
}
if ($class->isCollectionValuedAssociation($name) && $actualData[$name] !== null && !$actualData[$name] instanceof PersistentCollection) {
//TODO: If $actualData[$name] is Collection then unwrap the array
$assoc = $class->associationMappings[$name];
//echo PHP_EOL . "INJECTING PCOLL into $name" . PHP_EOL;
// Inject PersistentCollection
$coll = new PersistentCollection($this->_em, $this->_em->getClassMetadata($assoc->targetEntityName), $actualData[$name] ? $actualData[$name] : array());
$coll->setOwner($entity, $assoc);
if (!$coll->isEmpty()) {
$coll->setDirty(true);
}
$class->reflFields[$name]->setValue($entity, $coll);
$actualData[$name] = $coll;
}
}
if (!isset($this->_originalEntityData[$oid])) {
// Entity is either NEW or MANAGED but not yet fully persisted
// (only has an id). These result in an INSERT.
$this->_originalEntityData[$oid] = $actualData;
$this->_entityChangeSets[$oid] = array_map(function ($e) {
return array(null, $e);
}, $actualData);
} else {
// Entity is "fully" MANAGED: it was already fully persisted before
// and we have a copy of the original data
$originalData = $this->_originalEntityData[$oid];
$changeSet = array();
$entityIsDirty = false;
foreach ($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 || $orgValue === null ^ $actualValue === null) {
$changeSet[$propName] = array($orgValue, $actualValue);
}
}
if (isset($changeSet[$propName])) {
if (isset($class->associationMappings[$propName])) {
$assoc = $class->associationMappings[$propName];
if ($assoc->isOneToOne() && $assoc->isOwningSide) {
$entityIsDirty = true;
} else {
if ($orgValue instanceof PersistentCollection) {
// A PersistentCollection was de-referenced, so delete it.
if (!in_array($orgValue, $this->_collectionDeletions, true)) {
$this->_collectionDeletions[] = $orgValue;
}
}
}
} else {
$entityIsDirty = true;
}
}
}
if ($changeSet) {
if ($entityIsDirty) {
$this->_entityUpdates[$oid] = $entity;
}
$this->_entityChangeSets[$oid] = $changeSet;
$this->_originalEntityData[$oid] = $actualData;
}
}
}
/**
* INTERNAL:
* Computes the changeset of an individual entity, independently of the
* computeChangeSets() routine that is used at the beginning of a UnitOfWork#commit().
*
* The passed entity must be a managed entity. If the entity already has a change set
* because this method is invoked during a commit cycle then the change sets are added.
* whereby changes detected in this method prevail.
*
* @ignore
* @param ClassMetadata $class The class descriptor of the entity.
* @param object $entity The entity for which to (re)calculate the change set.
* @throws InvalidArgumentException If the passed entity is not MANAGED.
*/
public function recomputeSingleEntityChangeSet($class, $entity)
{
$oid = spl_object_hash($entity);
if (!isset($this->_entityStates[$oid]) || $this->_entityStates[$oid] != self::STATE_MANAGED) {
throw new \InvalidArgumentException('Entity must be managed.');
}
/* TODO: Just return if changetracking policy is NOTIFY?
if ($class->isChangeTrackingNotify()) {
return;
}*/
if (!$class->isInheritanceTypeNone()) {
$class = $this->_em->getClassMetadata(get_class($entity));
}
$actualData = array();
foreach ($class->reflFields as $name => $refProp) {
if (!$class->isIdentifier($name) || !$class->isIdGeneratorIdentity()) {
$actualData[$name] = $refProp->getValue($entity);
}
}
$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 || $orgValue === null ^ $actualValue === null) {
$changeSet[$propName] = array($orgValue, $actualValue);
}
}
}
if ($changeSet) {
if (isset($this->_entityChangeSets[$oid])) {
$this->_entityChangeSets[$oid] = $changeSet + $this->_entityChangeSets[$oid];
}
$this->_originalEntityData[$oid] = $actualData;
}
}
