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Java > Open Source Codes > org > apache > ojb > odmg > collections > DSetIterator


1 package org.apache.ojb.odmg.collections;
2
3 /* Copyright 2002-2005 The Apache Software Foundation
4  *
5  * Licensed under the Apache License, Version 2.0 (the "License");
6  * you may not use this file except in compliance with the License.
7  * You may obtain a copy of the License at
8  *
9  * http://www.apache.org/licenses/LICENSE-2.0
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  */
17
18 import java.util.Iterator JavaDoc;
19
20 import org.apache.ojb.odmg.TransactionImpl;
21
22 /**
23  * Iterator implementation for {@link org.odmg.DSet} implementation.
24  *
25  * @version $Id: DSetIterator.java,v 1.8.2.2 2005/12/21 22:29:50 tomdz Exp $
26  */
27 class DSetIterator implements Iterator JavaDoc
28 {
29     private Iterator JavaDoc iter;
30     private DSetImpl dSet;
31     private DSetEntry currentEntry = null;
32
33     /**
34      * DListIterator constructor comment.
35      */
36     public DSetIterator(DSetImpl set)
37     {
38         this.dSet = set;
39         this.iter = set.getElements().iterator();
40     }
41
42     /**
43      * @see java.util.Iterator#hasNext()
44      */
45     public boolean hasNext()
46     {
47         return iter.hasNext();
48     }
49
50     /**
51      * @see java.util.Iterator#next()
52      */
53     public Object JavaDoc next()
54     {
55         currentEntry = ((DSetEntry) iter.next());
56         return currentEntry.getRealSubject();
57     }
58
59     /**
60      * @see java.util.Iterator#remove()
61      */
62     public void remove()
63     {
64         iter.remove();
65         TransactionImpl tx = dSet.getTransaction();
66         if (tx != null)
67         {
68             tx.markDelete(currentEntry);
69         }
70         currentEntry = null;
71     }
72 }
73
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