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Java > Open Source Codes > org > dom4j > tree > SingleIterator


1 /*
2  * Copyright 2001-2005 (C) MetaStuff, Ltd. All Rights Reserved.
3  *
4  * This software is open source.
5  * See the bottom of this file for the licence.
6  */
7
8 package org.dom4j.tree;
9
10 import java.util.Iterator JavaDoc;
11
12 /**
13  * <p>
14  * <code>SingleIterator</code> is an {@link Iterator}over a single object
15  * instance.
16  * </p>
17  *
18  * @author <a HREF="mailto:james.strachan@metastuff.com">James Strachan </a>
19  * @version $Revision: 1.9 $
20  */
21 public class SingleIterator implements Iterator JavaDoc {
22     private boolean first = true;
23
24     private Object JavaDoc object;
25
26     public SingleIterator(Object JavaDoc object) {
27         this.object = object;
28     }
29
30     public boolean hasNext() {
31         return first;
32     }
33
34     public Object JavaDoc next() {
35         Object JavaDoc answer = object;
36         object = null;
37         first = false;
38
39         return answer;
40     }
41
42     public void remove() {
43         throw new UnsupportedOperationException JavaDoc("remove() is not supported by "
44                 + "this iterator");
45     }
46 }
47
48 /*
49  * Redistribution and use of this software and associated documentation
50  * ("Software"), with or without modification, are permitted provided that the
51  * following conditions are met:
52  *
53  * 1. Redistributions of source code must retain copyright statements and
54  * notices. Redistributions must also contain a copy of this document.
55  *
56  * 2. Redistributions in binary form must reproduce the above copyright notice,
57  * this list of conditions and the following disclaimer in the documentation
58  * and/or other materials provided with the distribution.
59  *
60  * 3. The name "DOM4J" must not be used to endorse or promote products derived
61  * from this Software without prior written permission of MetaStuff, Ltd. For
62  * written permission, please contact dom4j-info@metastuff.com.
63  *
64  * 4. Products derived from this Software may not be called "DOM4J" nor may
65  * "DOM4J" appear in their names without prior written permission of MetaStuff,
66  * Ltd. DOM4J is a registered trademark of MetaStuff, Ltd.
67  *
68  * 5. Due credit should be given to the DOM4J Project - http://www.dom4j.org
69  *
70  * THIS SOFTWARE IS PROVIDED BY METASTUFF, LTD. AND CONTRIBUTORS ``AS IS'' AND
71  * ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
72  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
73  * ARE DISCLAIMED. IN NO EVENT SHALL METASTUFF, LTD. OR ITS CONTRIBUTORS BE
74  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
75  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
76  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
77  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
78  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
79  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
80  * POSSIBILITY OF SUCH DAMAGE.
81  *
82  * Copyright 2001-2005 (C) MetaStuff, Ltd. All Rights Reserved.
83  */
84
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