--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/org.eclipse.core.databinding/src/org/eclipse/core/internal/databinding/IdentityWrapper.d	Tue Apr 14 11:35:29 2009 +0200
@@ -0,0 +1,52 @@
+/*******************************************************************************
+ * Copyright (c) 2006 IBM Corporation and others.
+ * 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:
+ *     IBM Corporation - initial API and implementation
+ *     Daniel Kruegler - bug 137435
+ ******************************************************************************/
+
+module org.eclipse.core.internal.databinding.IdentityWrapper;
+
+import java.lang.all;
+
+/**
+ * Used for wrapping objects that define their own implementations of equals()
+ * and hashCode() when putting them in sets or hashmaps to ensure identity
+ * comparison.
+ * 
+ * @since 1.0
+ * 
+ */
+public class IdentityWrapper {
+    final Object o;
+
+    /**
+     * @param o
+     */
+    public this(Object o) {
+        this.o = o;
+    }
+    
+    /**
+     * @return the unwrapped object
+     */
+    public Object unwrap() {
+        return o;
+    }
+
+    public override bool opEquals(Object obj) {
+        if (obj is null || obj.getClass() !is IdentityWrapper.classinfo) {
+            return false;
+        }
+        return o is (cast(IdentityWrapper) obj).o;
+    }
+
+    public int hashCode() {
+        return System.identityHashCode(o);
+    }
+}