01: /*
02: (c) Copyright 2004, 2005, 2006, 2007, 2008 Hewlett-Packard Development Company, LP, all rights reserved.
03: [See end of file]
04: $Id: BackReference.java,v 1.5 2008/01/02 12:06:04 andy_seaborne Exp $
05: */
06: package com.hp.hpl.jena.graph.query.regexptrees;
07:
08: /**
09: BackReference - class describing back-references in regular expressions.
10: @author kers
11: */
12: public class BackReference extends RegexpTree {
13: protected int index;
14:
15: public BackReference(int n) {
16: this .index = n;
17: }
18:
19: public int getIndex() {
20: return index;
21: }
22:
23: public boolean equals(Object other) {
24: return other instanceof BackReference
25: && index == ((BackReference) other).index;
26: }
27:
28: public int hashCode() {
29: return index;
30: }
31:
32: public String toString() {
33: return "<back " + index + ">";
34: }
35: }
36:
37: /*
38: (c) Copyright 2004, 2005, 2006, 2007, 2008 Hewlett-Packard Development Company, LP
39: All rights reserved.
40:
41: Redistribution and use in source and binary forms, with or without
42: modification, are permitted provided that the following conditions
43: are met:
44:
45: 1. Redistributions of source code must retain the above copyright
46: notice, this list of conditions and the following disclaimer.
47:
48: 2. Redistributions in binary form must reproduce the above copyright
49: notice, this list of conditions and the following disclaimer in the
50: documentation and/or other materials provided with the distribution.
51:
52: 3. The name of the author may not be used to endorse or promote products
53: derived from this software without specific prior written permission.
54:
55: THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
56: IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
57: OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
58: IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
59: INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
60: NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
61: DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
62: THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
63: (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
64: THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
65: */
|