Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
LinkedIterator |
|
| 2.0;2 |
1 | /* | |
2 | * $Header: /home/projects/jaxen/scm/jaxen/src/java/main/org/jaxen/util/LinkedIterator.java,v 1.8 2006/11/09 18:20:12 elharo Exp $ | |
3 | * $Revision: 1.8 $ | |
4 | * $Date: 2006/11/09 18:20:12 $ | |
5 | * | |
6 | * ==================================================================== | |
7 | * | |
8 | * Copyright 2000-2002 bob mcwhirter & James Strachan. | |
9 | * All rights reserved. | |
10 | * | |
11 | * Redistribution and use in source and binary forms, with or without | |
12 | * modification, are permitted provided that the following conditions are | |
13 | * met: | |
14 | * | |
15 | * * Redistributions of source code must retain the above copyright | |
16 | * notice, this list of conditions and the following disclaimer. | |
17 | * | |
18 | * * Redistributions in binary form must reproduce the above copyright | |
19 | * notice, this list of conditions and the following disclaimer in the | |
20 | * documentation and/or other materials provided with the distribution. | |
21 | * | |
22 | * * Neither the name of the Jaxen Project nor the names of its | |
23 | * contributors may be used to endorse or promote products derived | |
24 | * from this software without specific prior written permission. | |
25 | * | |
26 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS | |
27 | * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED | |
28 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A | |
29 | * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER | |
30 | * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
31 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
32 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
33 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
34 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
35 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
36 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
37 | * | |
38 | * ==================================================================== | |
39 | * This software consists of voluntary contributions made by many | |
40 | * individuals on behalf of the Jaxen Project and was originally | |
41 | * created by bob mcwhirter <bob@werken.com> and | |
42 | * James Strachan <jstrachan@apache.org>. For more information on the | |
43 | * Jaxen Project, please see <http://www.jaxen.org/>. | |
44 | * | |
45 | * $Id: LinkedIterator.java,v 1.8 2006/11/09 18:20:12 elharo Exp $ | |
46 | */ | |
47 | ||
48 | ||
49 | package org.jaxen.util; | |
50 | ||
51 | import java.util.ArrayList; | |
52 | import java.util.Iterator; | |
53 | import java.util.List; | |
54 | import java.util.NoSuchElementException; | |
55 | ||
56 | /** | |
57 | * @deprecated This class is undocumented and untested. | |
58 | * It will be removed in a future release. | |
59 | */ | |
60 | public class LinkedIterator implements Iterator | |
61 | { | |
62 | private List iterators; | |
63 | private int cur; | |
64 | ||
65 | public LinkedIterator() | |
66 | 0 | { |
67 | 0 | this.iterators = new ArrayList(); |
68 | 0 | this.cur = 0; |
69 | 0 | } |
70 | ||
71 | public void addIterator(Iterator i) | |
72 | { | |
73 | 0 | this.iterators.add( i ); |
74 | 0 | } |
75 | ||
76 | public boolean hasNext() | |
77 | { | |
78 | 0 | boolean has = false; |
79 | ||
80 | 0 | if ( this.cur < this.iterators.size() ) |
81 | { | |
82 | 0 | has = ((Iterator)this.iterators.get( this.cur )).hasNext(); |
83 | ||
84 | 0 | if ( ! has |
85 | && | |
86 | this.cur < this.iterators.size() ) | |
87 | { | |
88 | 0 | ++this.cur; |
89 | 0 | has = hasNext(); |
90 | 0 | } |
91 | } | |
92 | else | |
93 | { | |
94 | 0 | has = false; |
95 | } | |
96 | ||
97 | 0 | return has; |
98 | } | |
99 | ||
100 | public Object next() | |
101 | { | |
102 | 0 | if ( ! hasNext() ) |
103 | { | |
104 | 0 | throw new NoSuchElementException(); |
105 | } | |
106 | ||
107 | 0 | return ((Iterator)this.iterators.get( this.cur )).next(); |
108 | } | |
109 | ||
110 | /** | |
111 | * This operation is not supported. | |
112 | * | |
113 | * @throws UnsupportedOperationException | |
114 | */ | |
115 | public void remove() | |
116 | { | |
117 | 0 | throw new UnsupportedOperationException(); |
118 | } | |
119 | } |