/**
* {@inheritdoc}
*/
public function translate(EntityInterface $meta, IdentityInterface $identity) : IdentityMatch
{
$query = (new Query())->match('entity', $meta->labels()->toPrimitive())->withProperty($meta->identity()->property(), '{entity_identity}')->withParameter('entity_identity', $identity->value())->with('entity');
$variables = new Set('string');
$meta->children()->foreach(function (string $property, ValueObject $child) use(&$query, &$variables) {
$relName = (new Str('entity_'))->append($property);
$childName = $relName->append('_')->append($child->relationship()->childProperty());
$variables = $variables->add((string) $relName)->add((string) $childName);
$query = $query->match('entity')->linkedTo((string) $childName, $child->labels()->toPrimitive())->through((string) $child->relationship()->type(), (string) $relName, Relationship::LEFT);
});
return new IdentityMatch($query->return('entity', ...$variables->toPrimitive()), (new Map('string', EntityInterface::class))->put('entity', $meta));
}
/**
* Add clause to match the node we want to delete and all of its children
*
* @param IdentityInterface $identity
* @param object $entity
* @param Query $query
*
* @return Query
*/
private function matchAggregate(IdentityInterface $identity, $entity, Query $query) : Query
{
$meta = $this->metadatas->get(get_class($entity));
$name = $this->name->sprintf(md5($identity->value()));
$this->variables = $this->variables->add((string) $name);
$query = $query->match((string) $name, $meta->labels()->toPrimitive())->withProperty($meta->identity()->property(), (string) $name->prepend('{')->append('_identity}'))->withParameter((string) $name->append('_identity'), $identity->value());
$meta->children()->foreach(function (string $property, ValueObject $child) use(&$query, $name) {
$query = $query->match((string) $name)->linkedTo($childName = (string) $name->append('_')->append($child->relationship()->property())->append('_')->append($child->relationship()->childProperty()), $child->labels()->toPrimitive())->through((string) $child->relationship()->type(), $relName = (string) $name->append('_')->append($child->relationship()->property()));
$this->variables = $this->variables->add($childName)->add($relName);
});
return $query;
}
/**
* Add the clause to create a relationship between nodes
*
* @param IdentityInterface $identity
* @param object $entity
* @param Query $query
*
* @return Query
*/
private function createRelationship(IdentityInterface $identity, $entity, Query $query) : Query
{
$meta = $this->metadatas->get(get_class($entity));
$data = $this->extractor->extract($entity);
$start = $data->get($meta->startNode()->property());
$end = $data->get($meta->endNode()->property());
$varName = $this->name->sprintf(md5($identity->value()));
$startName = $this->name->sprintf(md5($start));
$endName = $this->name->sprintf(md5($end));
$paramKey = $varName->append('_props');
$properties = $this->buildProperties($meta->properties(), $paramKey);
return $this->matchEdge($endName, $meta->endNode(), $end, $this->matchEdge($startName, $meta->startNode(), $start, $query))->create((string) $startName)->linkedTo((string) $endName)->through((string) $meta->type(), (string) $varName, DBALRelationship::RIGHT)->withProperty($meta->identity()->property(), (string) $paramKey->prepend('{')->append('}.')->append($meta->identity()->property()))->withProperties($properties->toPrimitive())->withParameters([(string) $paramKey => $data->keyIntersect($properties)->set($meta->identity()->property(), $identity->value())->toPrimitive()]);
}
/**
* {@inheritdoc}
*/
public function translate(EntityInterface $meta, IdentityInterface $identity) : IdentityMatch
{
$query = (new Query())->match('start')->linkedTo('end')->through((string) $meta->type(), 'entity', Relationship::RIGHT)->withProperty($meta->identity()->property(), '{entity_identity}')->withParameter('entity_identity', $identity->value())->return('start', 'end', 'entity');
return new IdentityMatch($query, (new Map('string', EntityInterface::class))->put('entity', $meta));
}
/**
* Add the match clause for a relationship
*
* @param IdentityInterface $identity
* @param object $entity
* @param Relationship $meta
* @param CollectionInterface $changeset
* @param Query $query
*
* @return Query
*/
private function matchRelationship(IdentityInterface $identity, $entity, Relationship $meta, CollectionInterface $changeset, Query $query) : Query
{
$name = $this->name->sprintf(md5($identity->value()));
$this->variables = $this->variables->put($name, $this->buildProperties($changeset, $meta->properties()));
return $query->match()->linkedTo()->through((string) $meta->type(), (string) $name)->withProperty($meta->identity()->property(), (string) $name->prepend('{')->append('_identity}'))->withParameter((string) $name->append('_identity'), $identity->value());
}
