001/* 002 * Copyright 2001 (C) MetaStuff, Ltd. All Rights Reserved. 003 * 004 * This software is open source. 005 * See the bottom of this file for the licence. 006 * 007 * $Id: SingleIterator.java,v 1.3 2001/07/03 10:14:06 jstrachan Exp $ 008 */ 009 010package org.dom4j.tree; 011 012import java.util.Iterator; 013 014import org.dom4j.Element; 015 016/** <p><code>SingleIterator</code> is an {@link Iterator} over a single 017 * object instance.</p> 018 * 019 * @author <a href="mailto:james.strachan@metastuff.com">James Strachan</a> 020 * @version $Revision: 1.3 $ 021 */ 022public class SingleIterator implements Iterator { 023 024 private boolean first = true; 025 private Object object; 026 027 public SingleIterator(Object object) { 028 this.object = object; 029 } 030 031 public boolean hasNext() { 032 return first; 033 } 034 035 public Object next() { 036 Object answer = object; 037 object = null; 038 first = false; 039 return answer; 040 } 041 042 public void remove() { 043 throw new UnsupportedOperationException( "remove() is not supported by this iterator" ); 044 } 045 046} 047 048 049 050 051/* 052 * Redistribution and use of this software and associated documentation 053 * ("Software"), with or without modification, are permitted provided 054 * that the following conditions are met: 055 * 056 * 1. Redistributions of source code must retain copyright 057 * statements and notices. Redistributions must also contain a 058 * copy of this document. 059 * 060 * 2. Redistributions in binary form must reproduce the 061 * above copyright notice, this list of conditions and the 062 * following disclaimer in the documentation and/or other 063 * materials provided with the distribution. 064 * 065 * 3. The name "DOM4J" must not be used to endorse or promote 066 * products derived from this Software without prior written 067 * permission of MetaStuff, Ltd. For written permission, 068 * please contact dom4j-info@metastuff.com. 069 * 070 * 4. Products derived from this Software may not be called "DOM4J" 071 * nor may "DOM4J" appear in their names without prior written 072 * permission of MetaStuff, Ltd. DOM4J is a registered 073 * trademark of MetaStuff, Ltd. 074 * 075 * 5. Due credit should be given to the DOM4J Project 076 * (http://dom4j.org/). 077 * 078 * THIS SOFTWARE IS PROVIDED BY METASTUFF, LTD. AND CONTRIBUTORS 079 * ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT 080 * NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND 081 * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL 082 * METASTUFF, LTD. OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 083 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 084 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 085 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 086 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 087 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 088 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 089 * OF THE POSSIBILITY OF SUCH DAMAGE. 090 * 091 * Copyright 2001 (C) MetaStuff, Ltd. All Rights Reserved. 092 * 093 * $Id: SingleIterator.java,v 1.3 2001/07/03 10:14:06 jstrachan Exp $ 094 */