Make sure that parent vertex exist.

drupol · drupol · commit f1ecb6a19a49 · 2019-05-02T13:52:10.000+02:00
diff --git a/src/Exporter/Graph.php b/src/Exporter/Graph.php
@@ -57,6 +57,7 @@ public function export(NodeInterface $node): OriginalGraph
 
             /** @var int $hash_parent */
             $hash_parent = $this->createVertexId($parent);
+            $this->createVertex($parent);
 
             $this->getGraph()->getVertex($hash_parent)->createEdgeTo($this->getGraph()->getVertex($vertexId));
         }

Original file line number	Diff line number	Diff line change
`@@ -57,6 +57,7 @@ public function export(NodeInterface $node): OriginalGraph`
`57`	`57`
`58`	`58`	`/** @var int $hash_parent */`
`59`	`59`	`$hash_parent = $this->createVertexId($parent);`
	`60`	`+ $this->createVertex($parent);`
`60`	`61`
`61`	`62`	`$this->getGraph()->getVertex($hash_parent)->createEdgeTo($this->getGraph()->getVertex($vertexId));`
`62`	`63`	`}`