Building relationship entity with Neo4J PHP OGM EntityManager - php

Question

I am trying to build an entity object for my relationship in Neo4j database with GraphAware Neo4j PHP OGM library using this simple method:
public function getRelationshipEntity($entityId) {
$repo = $this->entityManager->getRepository( Entity\Relationship\Fired::class );
return $repo->findOneById($entityId);
}
Here we have the entity classes, relationship first:
namespace Entity\Relationship;
use GraphAware\Neo4j\OGM\Annotations as OGM;
use Entity\Issue;
use Entity\Event;
/**
* #OGM\RelationshipEntity(type="FIRED")
*/
class Fired {
/**
* #OGM\GraphId()
*/
protected $id;
/**
* #OGM\StartNode(targetEntity="Entity\Event")
*/
protected $event;
/**
* #OGM\EndNode(targetEntity="Entity\Issue")
*/
protected $issue;
/**
* #var string
*
* #OGM\Property(type="string")
*/
protected $time;
/**
* #var string
*
* #OGM\Property(type="string")
*/
protected $eventName;
}
Then, start node:
namespace Entity;
use GraphAware\Neo4j\OGM\Annotations as OGM;
/**
* #OGM\Node(label="Event")
*/
class Event {
/**
* #OGM\GraphId()
*/
protected $id;
/**
* #var string
*
* #OGM\Property(type="string")
*/
protected $name;
}
..and end node:
namespace Entity;
use Doctrine\Common\Collections\ArrayCollection;
use GraphAware\Neo4j\OGM\Annotations as OGM;
/**
* #OGM\Node(label="Issue")
*/
class Issue {
/**
* #OGM\GraphId()
*/
protected $id;
/**
* #OGM\Property(type="string")
*/
protected $key;
/**
* #OGM\Property(type="string")
*/
protected $created;
/**
* #OGM\Property(type="string")
*/
protected $updated;
/**
* #OGM\Relationship(type="FIRED", direction="INCOMING", relationshipEntity="Entity\Relationship\Fired", collection=true)
* #var ArrayCollection
*/
protected $eventFires;
public function __construct($key) {
$this->key = $key;
$this->eventFires = new ArrayCollection();
}
public function __wakeup() {
$this->__construct($this->key);
}
/**
* #return ArrayCollection
*/
public function getEventFires() {
return $this->eventFires;
}
public function addEventFire(Entity\Relationship\Fired $eventFired) {
$this->eventFires->add($eventFired);
}
public function removeEventFire(Entity\Relationship\Fired $eventFired) {
$this->eventFires->removeElement($eventFired);
}
}
Apparently, what works really well for node entites, triggers the following error for relationships:
Fatal error: Call to undefined method GraphAware\Neo4j\OGM\Metadata\RelationshipEntityMetadata::hasCustomRepository() in /vendor/graphaware/neo4j-php-ogm/src/EntityManager.php
Any suggestion how I could workaround this? I even tried using EntityManager::createQuery() the following way:
public function getRelationships($eventName) {
$query = $this->entityManager->createQuery('MATCH (e:Event)-[f:FIRED{eventName: {eventName}}]->() RETURN e,f ORDER BY f.time');
$query->addEntityMapping('e', 'Entity\Event' );
$query->addEntityMapping('f', 'Entity\Relationship\Fired' );
$query->setParameter( 'eventName', $eventName);
return $query->execute();
}
But, apparently, addEntityMapping() doesn't work for relationship entities either! (It might be a feature though, not a bug):
Catchable fatal error: Argument 1 passed to GraphAware\Neo4j\OGM\Hydrator\EntityHydrator::hydrateNode() must implement interface GraphAware\Common\Type\Node, instance of GraphAware\Bolt\Result\Type\Relationship given, called in /vendor/graphaware/neo4j-php-ogm/src/Query.php on line 145 and defined in /vendor/graphaware/neo4j-php-ogm/src/Hydrator/EntityHydrator.php on line 232
So, I ended up that I can easily define and store relationship entities in Neo4J with this library but not sure how I could retrieve it easily with EntityManager, in the similar way I can do so with nodes.
Any help would be much appreciated!
As requested in comment below, these are GraphAware packages that I am using:
graphaware/neo4j-bolt 1.9.1 Neo4j Bolt Binary Protocol PHP Driver
graphaware/neo4j-common 3.4.0 Common Utilities library for Neo4j
graphaware/neo4j-php-client 4.8.0 Neo4j-PHP-Client is the most advanced PHP Client for Neo4j
graphaware/neo4j-php-ogm 1.0.0-RC6 PHP Object Graph Mapper for Neo4j