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diff --git a/bundles/org.simantics.utils.datastructures/src/org/simantics/utils/datastructures/IteratorAdapter.java b/bundles/org.simantics.utils.datastructures/src/org/simantics/utils/datastructures/IteratorAdapter.java
new file mode 100644
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--- /dev/null
+++ b/bundles/org.simantics.utils.datastructures/src/org/simantics/utils/datastructures/IteratorAdapter.java
@@ -0,0 +1,42 @@
+/*******************************************************************************
+ * 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.utils.datastructures;
+
+import java.util.Iterator;
+
+public class IteratorAdapter<Domain, Range, I extends Iterator<Domain>> 
+    implements Iterator<Range> {
+
+    protected Converter<Domain, Range> converter;
+    protected I iterator;
+    
+    public IteratorAdapter(Converter<Domain,Range> converter, I iterator) {
+        this.converter = converter;
+        this.iterator = iterator;
+    }
+    
+    @Override
+    public boolean hasNext() {
+        return iterator.hasNext();
+    }
+
+    @Override
+    public Range next() {
+        return converter.convertTo(iterator.next());
+    }
+
+    @Override
+    public void remove() {
+        iterator.remove();
+    }    
+    
+}