From 0c4096004039bee3fd38918b66a94bb57bada0ff Mon Sep 17 00:00:00 2001
From: jsimomaa <jani.simomaa@gmail.com>
Date: Wed, 28 Dec 2016 16:03:13 +0200
Subject: [PATCH] Ensure GetElementClassRequest is not constructed without
 elementFactory

refs #6898

Change-Id: I905188f352bbaeae7787d817e7b0835a36138abf
---
 .../org/simantics/diagram/adapter/GetElementClassRequest.java   | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/bundles/org.simantics.diagram/src/org/simantics/diagram/adapter/GetElementClassRequest.java b/bundles/org.simantics.diagram/src/org/simantics/diagram/adapter/GetElementClassRequest.java
index b23de4b34..17131efd1 100644
--- a/bundles/org.simantics.diagram/src/org/simantics/diagram/adapter/GetElementClassRequest.java
+++ b/bundles/org.simantics.diagram/src/org/simantics/diagram/adapter/GetElementClassRequest.java
@@ -33,6 +33,8 @@ class GetElementClassRequest extends BinaryAsyncRead<Resource, ICanvasContext, E
 
     public GetElementClassRequest(ElementFactory elementFactory, Resource element, ICanvasContext canvas, IDiagram diagram) {
         super(element, canvas);
+        if (elementFactory == null)
+            throw new IllegalArgumentException("elementFactory == null for " + element + " in diagram " + diagram + " with context " + canvas);
         this.elementFactory = elementFactory; 
         this.diagram = diagram;
     }
-- 
2.47.1