Clover coverage report - dom4j - 1.6.1
Coverage timestamp: ma mei 16 2005 14:23:01 GMT+01:00

file stats: | LOC: | 129 |  | Methods: | 5
| NCLOC: | 42 |  | Classes: | 1

Source file | Conditionals | Statements | Methods | TOTAL

FilterIterator.java

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1 |  | /*
2 |  | * Copyright 2001-2005 (C) MetaStuff, Ltd. All Rights Reserved.
3 |  | *
4 |  | * This software is open source.
5 |  | * See the bottom of this file for the licence.
6 |  | */
7 |  |
8 |  | package org.dom4j.tree;
9 |  |
10 |  | import java.util.Iterator;
11 |  | import java.util.NoSuchElementException;
12 |  |
13 |  | /**
14 |  | * <p>
15 |  | * <code>FilterIterator</code> is an abstract base class which is useful for
16 |  | * implementors of {@link Iterator}which filter an existing iterator.
17 |  | * </p>
18 |  | *
19 |  | * @author <a href="mailto:james.strachan@metastuff.com">James Strachan </a>
20 |  | * @version $Revision: 1.10 $
21 |  | *
22 |  | * @deprecated THIS CLASS WILL BE REMOVED IN dom4j-1.6 !!
23 |  | */
24 |  | public abstract class FilterIterator implements Iterator {
25 |  | protected Iterator proxy;
26 |  |
27 |  | private Object next;
28 |  |
29 |  | private boolean first = true;
30 |  |
31 | 0 | public FilterIterator(Iterator proxy) {
32 | 0 | this.proxy = proxy;
33 |  | }
34 |  |
35 | 0 | public boolean hasNext() {
36 | 0 | if (first) {
37 | 0 | next = findNext();
38 | 0 | first = false;
39 |  | }
40 |  |
41 | 0 | return next != null;
42 |  | }
43 |  |
44 | 0 | public Object next() throws NoSuchElementException {
45 | 0 | if (!hasNext()) {
46 | 0 | throw new NoSuchElementException();
47 |  | }
48 |  |
49 | 0 | Object answer = this.next;
50 | 0 | this.next = findNext();
51 |  |
52 | 0 | return answer;
53 |  | }
54 |  |
55 |  | /**
56 |  | * Always throws UnsupportedOperationException as this class does look-ahead
57 |  | * with its internal iterator.
58 |  | *
59 |  | * @throws UnsupportedOperationException
60 |  | * always
61 |  | */
62 | 0 | public void remove() {
63 | 0 | throw new UnsupportedOperationException();
64 |  | }
65 |  |
66 |  | /**
67 |  | * Filter method to perform some matching on the given element.
68 |  | *
69 |  | * @param element
70 |  | * DOCUMENT ME!
71 |  | *
72 |  | * @return true if the given element matches the filter and should be appear
73 |  | * in the iteration
74 |  | */
75 |  | protected abstract boolean matches(Object element);
76 |  |
77 | 0 | protected Object findNext() {
78 | 0 | if (proxy != null) {
79 | 0 | while (proxy.hasNext()) {
80 | 0 | Object nextObject = proxy.next();
81 |  |
82 | 0 | if ((nextObject != null) && matches(nextObject)) {
83 | 0 | return nextObject;
84 |  | }
85 |  | }
86 |  |
87 | 0 | proxy = null;
88 |  | }
89 |  |
90 | 0 | return null;
91 |  | }
92 |  | }
93 |  |
94 |  | /*
95 |  | * Redistribution and use of this software and associated documentation
96 |  | * ("Software"), with or without modification, are permitted provided that the
97 |  | * following conditions are met:
98 |  | *
99 |  | * 1. Redistributions of source code must retain copyright statements and
100 |  | * notices. Redistributions must also contain a copy of this document.
101 |  | *
102 |  | * 2. Redistributions in binary form must reproduce the above copyright notice,
103 |  | * this list of conditions and the following disclaimer in the documentation
104 |  | * and/or other materials provided with the distribution.
105 |  | *
106 |  | * 3. The name "DOM4J" must not be used to endorse or promote products derived
107 |  | * from this Software without prior written permission of MetaStuff, Ltd. For
108 |  | * written permission, please contact dom4j-info@metastuff.com.
109 |  | *
110 |  | * 4. Products derived from this Software may not be called "DOM4J" nor may
111 |  | * "DOM4J" appear in their names without prior written permission of MetaStuff,
112 |  | * Ltd. DOM4J is a registered trademark of MetaStuff, Ltd.
113 |  | *
114 |  | * 5. Due credit should be given to the DOM4J Project - http://www.dom4j.org
115 |  | *
116 |  | * THIS SOFTWARE IS PROVIDED BY METASTUFF, LTD. AND CONTRIBUTORS ``AS IS'' AND
117 |  | * ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
118 |  | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
119 |  | * ARE DISCLAIMED. IN NO EVENT SHALL METASTUFF, LTD. OR ITS CONTRIBUTORS BE
120 |  | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
121 |  | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
122 |  | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
123 |  | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
124 |  | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
125 |  | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
126 |  | * POSSIBILITY OF SUCH DAMAGE.
127 |  | *
128 |  | * Copyright 2001-2005 (C) MetaStuff, Ltd. All Rights Reserved.
129 |  | */