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diff --git a/bundles/org.simantics.db.common/src/org/simantics/db/common/procedure/wrapper/NoneToAsyncListener.java b/bundles/org.simantics.db.common/src/org/simantics/db/common/procedure/wrapper/NoneToAsyncListener.java
new file mode 100644
index 000000000..6de18fbf2
--- /dev/null
+++ b/bundles/org.simantics.db.common/src/org/simantics/db/common/procedure/wrapper/NoneToAsyncListener.java
@@ -0,0 +1,60 @@
+/*******************************************************************************
+ * 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.procedure.wrapper;
+
+import org.simantics.db.AsyncReadGraph;
+import org.simantics.db.procedure.AsyncListener;
+import org.simantics.db.procedure.Listener;
+
+final public class NoneToAsyncListener<T> implements AsyncListener<T> {
+
+	final private Listener<T> procedure;
+
+	public NoneToAsyncListener(Listener<T> procedure) {
+		this.procedure = procedure;
+	}
+	
+	@Override
+	public void execute(AsyncReadGraph graph, final T result) {
+        procedure.execute(result);
+	}
+
+	@Override
+	public void exception(AsyncReadGraph graph, Throwable t) {
+		procedure.exception(t);
+	}
+
+	@Override
+	public boolean isDisposed() {
+	    return procedure.isDisposed();
+	}
+	
+    @Override
+    public String toString() {
+        return "NoneToAsyncListener -> " + procedure;
+   }
+    
+    @Override
+    public int hashCode() {
+        return procedure.hashCode();
+    }
+    
+    @Override
+    public boolean equals(Object arg0) {
+        if(arg0 instanceof NoneToAsyncListener) {
+            return procedure.equals(((NoneToAsyncListener<?>)arg0).procedure);
+        } else {
+            return procedure.equals(arg0);
+        }
+    }
+	
+}