/**
* Extracts a slice of $length elements starting at position $offset from the Collection.
*
* If $length is null it returns all elements from $offset to the end of the Collection.
* Keys have to be preserved by this method. Calling this method will only return the
* selected slice and NOT change the elements contained in the collection slice is called on.
*
* @param int $offset
* @param int|null $length
*
* @return array
*/
public function slice($offset, $length = null)
{
if (!$this->initialized && !$this->isDirty && $this->association['fetch'] === ClassMetadata::FETCH_EXTRA_LAZY) {
$persister = $this->em->getUnitOfWork()->getCollectionPersister($this->association);
return $persister->slice($this, $offset, $length);
}
return parent::slice($offset, $length);
}
/**
* @param mixed $element
*
* @return bool
*/
public function add($element)
{
$element->setGrouping($this->grouping);
return parent::add($element);
}
/**
* {@inheritdoc}
*/
public function set($key, $value)
{
$this->throwIfNotForm($value);
parent::set($key, $value);
}
/**
* Loads a collection of entities in a one-to-many association.
*
* @param array $assoc
* @param object $sourceEntity
* @param AbstractLazyCollection $collection The collection to load/fill.
*
* @return Collection
*/
public function loadOneToManyCollection(array $assoc, $sourceEntity, AbstractLazyCollection $collection)
{
if ($collection instanceof ApiCollection) {
foreach ($collection->getIterator() as $entity) {
$this->metadata->getReflectionProperty($assoc['mappedBy'])->setValue($entity, $sourceEntity);
}
}
return $collection;
}
/**
* {@inheritdoc}
*/
public function set($key, $value)
{
if (null === $key) {
parent::add($value);
} else {
parent::set($key, $value);
}
$this->changed();
}
/**
* {@inheritdoc}
*/
public function offsetSet($offset, $value)
{
$this->verifyTypeIntegrity($value);
$this->verifyUnique($offset, $value);
parent::offsetSet($offset, $value);
}
