private function translateChild(ValueObject $meta, ResultInterface $result, NodeInterface $node) : CollectionInterface
{
$relMeta = $meta->relationship();
$relationships = $result->relationships()->filter(function (RelationshipInterface $relationship) use($node, $relMeta) {
return (string) $relationship->type() === (string) $relMeta->type() && $relationship->endNode()->value() === $node->id()->value();
});
if ($relationships->count() > 1) {
throw MoreThanOneRelationshipFoundException::for($meta);
}
return $this->translateRelationship($meta, $result, $relationships->first());
}
private function translateRelationship($identity, EntityInterface $meta, ResultInterface $result) : CollectionInterface
{
$relationship = $result->relationships()->filter(function (RelationshipInterface $relationship) use($identity, $meta) {
$id = $meta->identity()->property();
$properties = $relationship->properties();
return $properties->hasKey($id) && $properties->get($id) === $identity;
})->first();
$data = (new Collection([]))->set($meta->identity()->property(), $relationship->properties()->get($meta->identity()->property()))->set($meta->startNode()->property(), $result->nodes()->get($relationship->startNode()->value())->properties()->get($meta->startNode()->target()))->set($meta->endNode()->property(), $result->nodes()->get($relationship->endNode()->value())->properties()->get($meta->endNode()->target()));
$meta->properties()->foreach(function (string $name, Property $property) use(&$data, $relationship) {
if ($property->type()->isNullable() && !$relationship->properties()->hasKey($name)) {
return;
}
$data = $data->set($name, $relationship->properties()->get($name));
});
return $data;
}
