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diff --git a/bundles/org.simantics.db.common/src/org/simantics/db/common/primitiverequest/Builtin.java b/bundles/org.simantics.db.common/src/org/simantics/db/common/primitiverequest/Builtin.java
new file mode 100644
index 000000000..b0d175e14
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+++ b/bundles/org.simantics.db.common/src/org/simantics/db/common/primitiverequest/Builtin.java
@@ -0,0 +1,62 @@
+/*******************************************************************************
+ * 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.procedure.AsyncProcedure;
+import org.simantics.db.request.AsyncRead;
+
+final public class Builtin implements AsyncRead<Resource> {
+
+    final protected String URI;
+    
+    @Override
+    public int hashCode() {
+        return URI.hashCode();
+    }
+    
+    @Override
+    public int threadHash() {
+    	return hashCode();
+    }
+    
+    @Override
+    public boolean equals(Object object) {
+        if (this == object)
+            return true;
+        else if (object == null)
+            return false;
+        else if (getClass() != object.getClass())
+            return false;
+        Builtin r = (Builtin)object;
+        return URI.equals(r.URI);
+    }
+
+    public Builtin(String URI) {
+    	assert(URI != null);
+        this.URI = URI;
+    }
+
+    @Override
+    public void perform(AsyncReadGraph graph, AsyncProcedure<Resource> procedure) {
+        
+        graph.forBuiltin(URI, procedure);
+        
+    }
+    
+    @Override
+    public int getFlags() {
+        return 0;
+    }
+
+}