doctrine / orm

    /**

     * {@inheritdoc}

     */

    public function remove($key)

    {

        // TODO: If the keys are persistent as well (not yet implemented)

        //       and the collection is not initialized and orphanRemoval is

        //       not used we can issue a straight SQL delete/update on the

        //       association (table). Without initializing the collection.

        $removed = parent::remove($key);

        if ( ! $removed) {

            return $removed;

        }

        $this->changed();

        if ($this->association !== null &&

            $this->association['type'] & ClassMetadata::TO_MANY &&

            $this->owner &&

            $this->association['orphanRemoval']) {

            $this->em->getUnitOfWork()->scheduleOrphanRemoval($removed);

        }

        return $removed;

    }

    /**

     * {@inheritdoc}

     *

     * @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);

    }

    /**

     * Cleans up internal state of cloned persistent collection.