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diff --git a/bundles/org.simantics.db.common/src/org/simantics/db/common/primitiverequest/PossibleResource.java b/bundles/org.simantics.db.common/src/org/simantics/db/common/primitiverequest/PossibleResource.java
new file mode 100644
index 000000000..a713e2561
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+++ b/bundles/org.simantics.db.common/src/org/simantics/db/common/primitiverequest/PossibleResource.java
@@ -0,0 +1,48 @@
+/*******************************************************************************
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management
+ * in Industry THTH ry.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     VTT Technical Research Centre of Finland - initial API and implementation
+ *******************************************************************************/
+package org.simantics.db.common.primitiverequest;
+
+import org.simantics.db.AsyncReadGraph;
+import org.simantics.db.Resource;
+import org.simantics.db.common.request.UnaryAsyncRead;
+import org.simantics.db.procedure.AsyncProcedure;
+
+final public class PossibleResource extends UnaryAsyncRead<String, Resource> {
+
+    @Override
+    public int getFlags() {
+        return 0;
+    }
+
+    public PossibleResource(String URI) {
+    	super(URI);
+    	assert(URI != null);
+    }
+
+    @Override
+    public void perform(AsyncReadGraph graph, final AsyncProcedure<Resource> procedure) {
+        graph.forResource(parameter, new AsyncProcedure<Resource>() {
+
+			@Override
+			public void execute(AsyncReadGraph graph, Resource result) {
+				procedure.execute(graph, result);
+			}
+
+			@Override
+			public void exception(AsyncReadGraph graph, Throwable throwable) {
+				procedure.execute(graph, null);
+			}
+        	
+        });
+    }
+
+}