X-Git-Url: https://gerrit.simantics.org/r/gitweb?p=simantics%2Fplatform.git;a=blobdiff_plain;f=bundles%2Forg.simantics.diagram%2Fsrc%2Forg%2Fsimantics%2Fdiagram%2Fadapter%2FGetElementClassRequest.java;h=17131efd14e2eb0d3647571d64f287b14d5c4b9d;hp=b23de4b345d7e7460e7bca3ef2f437a2e70ec457;hb=cb5fc8d606d8b322563e9345c441eecfa7f01753;hpb=969bd23cab98a79ca9101af33334000879fb60c5

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;
     }