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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);
}
}
}
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