je/examples/collections/ship/marshal/MarshalledKey.java
2021-06-06 13:46:45 -04:00

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/*-
* Copyright (C) 2002, 2017, Oracle and/or its affiliates. All rights reserved.
*
* This file was distributed by Oracle as part of a version of Oracle Berkeley
* DB Java Edition made available at:
*
* http://www.oracle.com/technetwork/database/database-technologies/berkeleydb/downloads/index.html
*
* Please see the LICENSE file included in the top-level directory of the
* appropriate version of Oracle Berkeley DB Java Edition for a copy of the
* license and additional information.
*/
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);
}