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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 java.io.Serializable;
+
+import com.sleepycat.bind.tuple.TupleInput;
+import com.sleepycat.bind.tuple.TupleOutput;
+
+/**
+ * A Shipment represents the combined key/data pair for a shipment entity.
+ *
+ * <p> In this sample, Shipment is bound to the stored key/data entry by
+ * implementing the MarshalledEnt interface, which is called by {@link
+ * SampleViews.MarshalledEntityBinding}. </p>
+ *
+ * <p> The binding is "tricky" in that it uses this class for both the stored
+ * data entry and the combined entity object.  To do this, the key field(s) are
+ * transient and are set by the binding after the data object has been
+ * deserialized. This avoids the use of a ShipmentData class completely. </p>
+ *
+ * <p> Since this class is used directly for data storage, it must be
+ * Serializable. </p>
+ *
+ * @author Mark Hayes
+ */
+public class Shipment implements Serializable, MarshalledEnt {
+
+    static final String PART_KEY = "part";
+    static final String SUPPLIER_KEY = "supplier";
+
+    private transient String partNumber;
+    private transient String supplierNumber;
+    private int quantity;
+
+    public Shipment(String partNumber, String supplierNumber, int quantity) {
+
+        this.partNumber = partNumber;
+        this.supplierNumber = supplierNumber;
+        this.quantity = quantity;
+    }
+
+    /**
+     * Set the transient key fields after deserializing.  This method is only
+     * called by data bindings.
+     */
+    void setKey(String partNumber, String supplierNumber) {
+
+        this.partNumber = partNumber;
+        this.supplierNumber = supplierNumber;
+    }
+
+    public final String getPartNumber() {
+
+        return partNumber;
+    }
+
+    public final String getSupplierNumber() {
+
+        return supplierNumber;
+    }
+
+    public final int getQuantity() {
+
+        return quantity;
+    }
+
+    public String toString() {
+
+        return "[Shipment: part=" + partNumber +
+                " supplier=" + supplierNumber +
+                " quantity=" + quantity + ']';
+    }
+
+    // --- MarshalledEnt implementation ---
+
+    Shipment() {
+
+        // A no-argument constructor is necessary only to allow the binding to
+        // instantiate objects of this class.
+    }
+
+    public void unmarshalPrimaryKey(TupleInput keyInput) {
+
+        this.partNumber = keyInput.readString();
+        this.supplierNumber = keyInput.readString();
+    }
+
+    public void marshalPrimaryKey(TupleOutput keyOutput) {
+
+        keyOutput.writeString(this.partNumber);
+        keyOutput.writeString(this.supplierNumber);
+    }
+
+    public boolean marshalSecondaryKey(String keyName, TupleOutput keyOutput) {
+
+        if (keyName.equals(PART_KEY)) {
+            keyOutput.writeString(this.partNumber);
+            return true;
+        } else if (keyName.equals(SUPPLIER_KEY)) {
+            keyOutput.writeString(this.supplierNumber);
+            return true;
+        } else {
+            throw new UnsupportedOperationException(keyName);
+        }
+    }
+}