/**
* @param string $cbdSubject
* @param MongoGraph $cbdGraph
* @param Collection $collection
* @param string $context
* @throws \Exception
*/
protected function saveCBD($cbdSubject, MongoGraph $cbdGraph, Collection $collection, $context)
{
$cbdSubject = $this->labeller->uri_to_alias($cbdSubject);
if ($cbdGraph == null || $cbdGraph->is_empty()) {
throw new \Exception("graph for {$cbdSubject} was null");
}
try {
$collection->insertOne($cbdGraph->to_tripod_array($cbdSubject, $context), array("w" => 1));
print ".";
} catch (\Exception $e) {
if (preg_match('/E11000/', $e->getMessage())) {
print "M";
// key already exists, merge it
$criteria = array("_id" => array("r" => $cbdSubject, "c" => $context));
$existingGraph = new MongoGraph();
$existingGraph->add_tripod_array($collection->findOne($criteria));
$existingGraph->add_graph($cbdGraph);
try {
$collection->updateOne($criteria, ['$set' => $existingGraph->to_tripod_array($cbdSubject, $context)], array("w" => 1));
} catch (\Exception $e2) {
throw new \Exception($e2->getMessage());
// todo: would be good to have typed exception
}
} else {
// retry
print "CursorException on update: " . $e->getMessage() . ", retrying\n";
try {
$collection->insertOne($cbdGraph->to_tripod_array($cbdSubject, $context), array("w" => 1));
} catch (\Exception $e2) {
throw new \Exception($e2->getMessage());
// todo: would be good to have typed exception
}
}
}
}
