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diff --git a/bundles/org.simantics.db.common/src/org/simantics/db/common/request/PossibleChild.java b/bundles/org.simantics.db.common/src/org/simantics/db/common/request/PossibleChild.java
new file mode 100644
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+++ b/bundles/org.simantics.db.common/src/org/simantics/db/common/request/PossibleChild.java
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+/*******************************************************************************
+ * 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.request;
+
+import java.util.Map;
+
+import org.simantics.db.ReadGraph;
+import org.simantics.db.Resource;
+import org.simantics.db.common.uri.UnescapedChildMapOfResource;
+import org.simantics.db.exception.DatabaseException;
+import org.simantics.db.request.ReadExt;
+import org.simantics.db.request.RequestFlags;
+
+final public class PossibleChild extends BinaryRead<Resource, String, Resource> implements ReadExt {
+
+    public PossibleChild(Resource resource, String name) {
+        super(resource, name);
+    }
+
+    @Override
+    public Resource perform(ReadGraph graph) throws DatabaseException {
+    	Map<String, Resource> childMap = graph.syncRequest(new UnescapedChildMapOfResource(parameter));
+    	return childMap.get(parameter2);
+    }
+    
+    @Override
+    public String toString() {
+    	return "PossibleChild " + parameter + " " + parameter2;
+    }
+
+	@Override
+	public boolean isImmutable(ReadGraph graph) throws DatabaseException {
+		return graph.isImmutable(parameter);
+	}
+
+	@Override
+	public int getType() {
+		return RequestFlags.IMMEDIATE_UPDATE;
+	}
+
+}