/**
* @param StackInterface $stack
*
* @return ResultCollection|null
*
* @throws Neo4jException
*/
public function runStack(StackInterface $stack)
{
$pipeline = $this->pipeline(null, null, $stack->getTag(), $stack->getConnectionAlias());
foreach ($stack->statements() as $statement) {
$pipeline->push($statement->text(), $statement->parameters(), $statement->getTag());
}
$this->eventDispatcher->dispatch(Neo4jClientEvents::NEO4J_PRE_RUN, new PreRunEvent($stack->statements()));
try {
$results = $pipeline->run();
$this->eventDispatcher->dispatch(Neo4jClientEvents::NEO4J_POST_RUN, new PostRunEvent($results));
} catch (Neo4jException $e) {
$event = new FailureEvent($e);
$this->eventDispatcher->dispatch(Neo4jClientEvents::NEO4J_ON_FAILURE, $event);
if ($event->shouldThrowException()) {
throw $e;
}
return;
}
return $results;
}