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;
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 1.1 2007-08-24 22:17:37 ewestfal Exp $
26 */
27 class DSetIterator implements Iterator
28 {
29 private Iterator 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 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 }