1 /*
2 * $Source$
3 * $Revision$
4 *
5 * Copyright (C) 2000 William Chesters
6 *
7 * Part of Melati (http://melati.org), a framework for the rapid
8 * development of clean, maintainable web applications.
9 *
10 * Melati is free software; Permission is granted to copy, distribute
11 * and/or modify this software under the terms either:
12 *
13 * a) the GNU General Public License as published by the Free Software
14 * Foundation; either version 2 of the License, or (at your option)
15 * any later version,
16 *
17 * or
18 *
19 * b) any version of the Melati Software License, as published
20 * at http://melati.org
21 *
22 * You should have received a copy of the GNU General Public License and
23 * the Melati Software License along with this program;
24 * if not, write to the Free Software Foundation, Inc.,
25 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA to obtain the
26 * GNU General Public License and visit http://melati.org to obtain the
27 * Melati Software License.
28 *
29 * Feel free to contact the Developers of Melati (http://melati.org),
30 * if you would like to work out a different arrangement than the options
31 * outlined here. It is our intention to allow Melati to be used by as
32 * wide an audience as possible.
33 *
34 * This program is distributed in the hope that it will be useful,
35 * but WITHOUT ANY WARRANTY; without even the implied warranty of
36 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
37 * GNU General Public License for more details.
38 *
39 * Contact details for copyright holder:
40 *
41 * William Chesters <williamc At paneris.org>
42 * http://paneris.org/~williamc
43 * Obrechtstraat 114, 2517VX Den Haag, The Netherlands
44 */
45
46 package org.melati.poem.util;
47
48 import java.util.Enumeration;
49 import java.util.NoSuchElementException;
50
51 /**
52 * An <code>Enumeration</code> of Longs.
53 */
54 public class LongEnumeration implements Enumeration<Long> {
55 // No real need for start
56 private long start, limit, i;
57
58 /**
59 * Constructor.
60 * @param start starting value
61 * @param limit size limit
62 */
63 public LongEnumeration(long start, long limit) {
64 this.start = start;
65 this.limit = limit;
66 this.i = this.start;
67 }
68
69 /**
70 * {@inheritDoc}
71 * @see java.util.Enumeration#hasMoreElements()
72 */
73 public boolean hasMoreElements() {
74 return i < limit;
75 }
76
77 /**
78 * {@inheritDoc}
79 * @see java.util.Enumeration#nextElement()
80 */
81 public synchronized Long nextElement() throws NoSuchElementException {
82 if (i >= limit)
83 throw new NoSuchElementException();
84 return new Long(i++);
85 }
86 }