private function writeEntities()
{
$this->begin();
foreach ($this->entities as $entity) {
$this->dispatchEvent(new Events\PrePersist($entity));
$hash = $this->getHash($entity);
$this->nodes[$hash] = $this->createNode($entity)->save();
$this->dispatchEvent(new Events\PostPersist($entity));
}
$this->commit();
// Write the primary key
foreach ($this->entities as $entity) {
$hash = $this->getHash($entity);
$meta = $this->getMeta($entity);
$pk = $meta->getPrimaryKey();
$nodeId = $this->nodes[$hash]->getId();
if ($pk->getValue($entity) !== $nodeId) {
$pk->setValue($entity, $nodeId);
if ($meta->getLabels()) {
$labels = array();
foreach ($meta->getLabels() as $label) {
$labels[] = new Label($this->client, $label);
}
$this->client->addLabels($this->nodes[$hash], $labels);
}
}
}
}
