From 99c30453dda8d469f0a2fad8eb11745b3435867a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Julius=20H=C3=A4rtl?= <jus@bitgrid.net>
Date: Tue, 15 Oct 2019 12:54:22 +0200
Subject: [PATCH] Ignore unavailable entity/operation classes
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Signed-off-by: Julius Härtl <jus@bitgrid.net>
---
 apps/workflowengine/lib/AppInfo/Application.php | 17 +++++++++++------
 1 file changed, 11 insertions(+), 6 deletions(-)

diff --git a/apps/workflowengine/lib/AppInfo/Application.php b/apps/workflowengine/lib/AppInfo/Application.php
index f5653a6e48..cea6ac7a1e 100644
--- a/apps/workflowengine/lib/AppInfo/Application.php
+++ b/apps/workflowengine/lib/AppInfo/Application.php
@@ -22,6 +22,7 @@
 namespace OCA\WorkflowEngine\AppInfo;
 
 use OCA\WorkflowEngine\Manager;
+use OCP\AppFramework\QueryException;
 use OCP\Template;
 use OCA\WorkflowEngine\Controller\RequestTime;
 use OCP\WorkflowEngine\IEntity;
@@ -89,12 +90,16 @@ class Application extends \OCP\AppFramework\App {
 						$eventName,
 						function (GenericEvent $event) use ($eventName, $operationClass, $entityClass) {
 							$ruleMatcher = $this->manager->getRuleMatcher();
-							/** @var IEntity $entity */
-							$entity = $this->getContainer()->query($entityClass);
-							$entity->prepareRuleMatcher($ruleMatcher, $eventName, $event);
-							/** @var IOperation $operation */
-							$operation = $this->getContainer()->query($operationClass);
-							$operation->onEvent($eventName, $event, $ruleMatcher);
+							try {
+								/** @var IEntity $entity */
+								$entity = $this->getContainer()->query($entityClass);
+								$entity->prepareRuleMatcher($ruleMatcher, $eventName, $event);
+								/** @var IOperation $operation */
+								$operation = $this->getContainer()->query($operationClass);
+								$operation->onEvent($eventName, $event, $ruleMatcher);
+							} catch (QueryException $e) {
+								// Ignore query exceptions since they might occur when an entity/operation were setup before by an app that is disabled now
+							}
 						}
 					);
 				}, $eventNames);