/**
* Compute the query to delete all entities wished to be removed
*
* @return Query
*/
protected function computeDeleteQuery()
{
$qb = new QueryBuilder();
$variables = [];
$idx = 0;
foreach ($this->scheduledForDelete as $entity) {
$class = $this->getClass($entity);
$metadata = $this->metadataRegistry->getMetadata($class);
$var = 'e' . (string) $idx;
$idProp = $metadata->getId()->getProperty();
$id = $this->accessor->getValue($entity, $idProp);
if ($metadata instanceof NodeMetadata) {
$qb->matchNode($var, $class, [$idProp => $id]);
} else {
$qb->addExpr($qb->expr()->matchNode()->relatedTo($qb->expr()->matchRelationship($var, $class, [$idProp => $id])));
}
$variables[] = $var;
$idx++;
}
foreach ($variables as $var) {
$qb->delete($var);
}
return $qb->getQuery();
}
/**
* Find the relationships for the given node property
*
* @param NodeMetadata $metadata
* @param Property $property
* @param array $info
*
* @return array
*/
protected function getNodeRelationships(NodeMetadata $metadata, Property $property, array $info)
{
$relationships = [];
$relClass = $this->map->getClass($property->getOption('relationship'));
foreach ($this->entities as $entity) {
if (!$entity instanceof $relClass) {
continue;
}
$relInfo = $this->entities->getInfo($entity);
if (in_array($info['realId'], [$relInfo['startNode'], $relInfo['endNode']], true)) {
$relationships[] = $entity;
}
}
if (!empty($relationships)) {
return $relationships;
}
$idProp = $metadata->getId()->getProperty();
$qb = new QueryBuilder();
$qb->addExpr($qb->expr()->matchNode('n', $metadata->getClass(), [$idProp => $info['properties'][$idProp]])->relatedTo($qb->expr()->matchRelationship('r', $relClass)))->toReturn('r');
return $this->uow->execute($qb->getQuery());
}