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Java > Open Source Codes > com > hp > hpl > jena > util > iterator > ArrayIterator


1 /*
2  * (c) Copyright 2000-2003, 2004, 2005 Hewlett-Packard Development Company, LP
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  * notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  * notice, this list of conditions and the following disclaimer in the
12  * documentation and/or other materials provided with the distribution.
13  * 3. The name of the author may not be used to endorse or promote products
14  * derived from this software without specific prior written permission.
15
16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26  *
27  * $Id: ArrayIterator.java,v 1.4 2005/02/21 12:19:13 andy_seaborne Exp $
28  *
29  */
30 //ArrayIterator.java
31 package com.hp.hpl.jena.util.iterator;
32 import java.util.Iterator JavaDoc;
33 import java.lang.reflect.Array JavaDoc;
34 import java.util.NoSuchElementException JavaDoc ;
35
36 /** An Iterator for arrays.
37  * @author Jeremy Carroll
38  * @version Release='$Name: $' Revision='$Revision: 1.4 $' Date='$Date: 2005/02/21 12:19:13 $'
39  */
40 public class ArrayIterator implements Iterator JavaDoc {
41     private int i;
42     private Object JavaDoc a;
43     /** Constructs an iterator over the members of an array.
44          * All arrays are supported including primitive types.
45          * @param array Must be an array.
46  */
47     public ArrayIterator(Object JavaDoc array) {
48         i = 0;
49         a = array;
50         if (!a.getClass().isArray())
51             throw new ArrayStoreException JavaDoc();
52     }
53     public boolean hasNext() {
54         return i<Array.getLength(a);
55     }
56     public Object JavaDoc next() throws NoSuchElementException JavaDoc {
57         try {
58             return Array.get(a,i++);
59         }
60         catch (IndexOutOfBoundsException JavaDoc e) {
61             throw new NoSuchElementException JavaDoc();
62         }
63     }
64 /** Not supported.
65  * @throws java.lang.UnsupportedOperationException Always.
66  *
67  */
68         public void remove() {
69
70             throw new UnsupportedOperationException JavaDoc();
71         }
72 }
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