X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=bundles%2Forg.simantics.document.server%2Fsrc%2Forg%2Fsimantics%2Fdocument%2Fserver%2FFunctions.java;h=2ba85b733adc1d10d8888afe9cb0f27f6161c1bd;hb=06718abb2b3cc780748553811c4857c165499809;hp=3892b50151a94b036d3a0a3460119cc3d6beaf85;hpb=969bd23cab98a79ca9101af33334000879fb60c5;p=simantics%2Fplatform.git

diff --git a/bundles/org.simantics.document.server/src/org/simantics/document/server/Functions.java b/bundles/org.simantics.document.server/src/org/simantics/document/server/Functions.java
index 3892b5015..2ba85b733 100644
--- a/bundles/org.simantics.document.server/src/org/simantics/document/server/Functions.java
+++ b/bundles/org.simantics.document.server/src/org/simantics/document/server/Functions.java
@@ -185,9 +185,18 @@ public class Functions {
     	return Variables.getVariable(graph, uri);
     }
     
+    public static Variable stateVariable(ReadGraph graph, Variable self) throws DatabaseException {
+    	Variable session = graph.syncRequest(new ProxySessionRequest(self));
+    	if (session == null)
+    		throw new DatabaseException("No state for " + self.getURI(graph));
+    	return session.getPossibleChild(graph, "__scl__");
+    }
+    
     @SCLValue(type = "ReadGraph -> Resource -> Variable -> Variable")
     public static Variable state(ReadGraph graph, Resource converter, Variable context) throws DatabaseException {
     	Variable session = graph.syncRequest(new ProxySessionRequest(context));
+    	if (session == null)
+    	    throw new DatabaseException("No state for " + context.getURI(graph));
     	return session.getPossibleChild(graph, "__scl__");
     }