Berkeley DB 4.4.16: /home/huihoo/src/db/db-4.4.16/java/src/com/sleepycat/collections/StoredMapEntry.java Source File

00001 /*-
00002  * See the file LICENSE for redistribution information.
00003  *
00004  * Copyright (c) 2000-2005
00005  *      Sleepycat Software.  All rights reserved.
00006  *
00007  * $Id: StoredMapEntry.java,v 12.1 2005/01/31 19:27:32 mark Exp $
00008  */
00009 
00010 package com.sleepycat.collections;
00011 
00015 final class StoredMapEntry extends MapEntryParameter {
00016 
00017     private StoredIterator iter;
00018     private StoredCollection coll;
00019 
00020     StoredMapEntry(Object key, Object value, StoredCollection coll,
00021                    StoredIterator iter) {
00022 
00023         super(key, value);
00024         // Assert: coll, coll.keyBinding/valueBinding
00025         this.coll = coll;
00026         this.iter = iter;
00027     }
00028 
00029     public Object setValue(Object newValue) {
00030 
00031         Object oldValue;
00032         if (iter != null && iter.isCurrentData(this)) {
00033             oldValue = getValue();
00034             iter.set(newValue);
00035         } else {
00036             oldValue = coll.put(getKey(), newValue);
00037         }
00038         setValueInternal(newValue);
00039         return oldValue;
00040     }
00041 }