public function findOrCreate($edge, $vIn, $vOut)
{
if (!$edge || !$vIn || !$vOut) {
throw new \Exception('Invalid arguments');
}
$vertex = new Vertex();
// findOrCreate origin vertex
$vertex->setSufix('in');
$query = $vertex->findOrCreate($vIn->label, $vIn->properties, false);
$vertex->prepareQuery($vIn->label, $vIn->properties);
// findOrCreate target vertex
$vertex->setSufix('out');
$query .= $vertex->findOrCreate($vOut->label, $vOut->properties, false);
$vertex->prepareQuery($vOut->label, $vOut->properties);
//create edge betweeen vertices
$edgeProperties = ParserProperties::parsePropertiesToInsert(false, $edge->properties);
$query .= "vin.addEdge('{$edge->label}', vout";
if (strlen($edgeProperties)) {
$query .= ",{$edgeProperties});";
$this->prepareQuery(false, $edge->properties);
} else {
$query .= ');';
}
//die($query);
return $this->executeQuery($query);
}