Set alias for result of cast column function

On OCI an expression like to_char(events) end up as $row['to_char(events)'] in the query result.

Signed-off-by: Daniel Kesselberg <mail@danielkesselberg.de>

apps/workflowengine/lib/Manager.php

@@ -155,7 +155,8 @@ class Manager implements IManager {
 	public function getAllConfiguredEvents() {
 		$query = $this->connection->getQueryBuilder();
 
-		$query->select('class', 'entity', $query->expr()->castColumn('events', IQueryBuilder::PARAM_STR))
+		$query->select('class', 'entity')
+			->selectAlias($query->expr()->castColumn('events', IQueryBuilder::PARAM_STR), 'events')
 			->from('flow_operations')
 			->where($query->expr()->neq('events', $query->createNamedParameter('[]'), IQueryBuilder::PARAM_STR))
 			->groupBy('class', 'entity', $query->expr()->castColumn('events', IQueryBuilder::PARAM_STR));