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diff --git a/db-4.8.30/examples_java/src/collections/ship/marshal/MarshalledKey.java b/db-4.8.30/examples_java/src/collections/ship/marshal/MarshalledKey.java
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+/*-
+ * See the file LICENSE for redistribution information.
+ *
+ * Copyright (c) 2002-2009 Oracle.  All rights reserved.
+ *
+ * $Id$
+ */
+
+package collections.ship.marshal;
+
+import com.sleepycat.bind.tuple.TupleInput;
+import com.sleepycat.bind.tuple.TupleOutput;
+
+/**
+ * MarshalledKey is implemented by key objects and called by {@link
+ * SampleViews.MarshalledKeyBinding}.  In this sample, MarshalledKey is
+ * implemented by {@link PartKey}, {@link SupplierKey}, and {@link
+ * ShipmentKey}.  This interface is package-protected rather than public to
+ * hide the marshalling interface from other users of the data objects.  Note
+ * that a MarshalledKey must also have a no arguments constructor so
+ * that it can be instantiated by the binding.
+ *
+ * @author Mark Hayes
+ */
+interface MarshalledKey {
+
+    /**
+     * Construct the key tuple entry from the key object.
+     */
+    void marshalKey(TupleOutput keyOutput);
+
+    /**
+     * Construct the key object from the key tuple entry.
+     */
+    void unmarshalKey(TupleInput keyInput);
+}