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comparison NGSrich_0.5.5/src/org/jdom/filter/ElementFilter.java @ 0:89ad0a9cca52 default tip

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author pfrommolt
date Mon, 21 Nov 2011 08:12:19 -0500
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1 /*--
2
3 $Id: ElementFilter.java,v 1.20 2007/11/10 05:29:00 jhunter Exp $
4
5 Copyright (C) 2000-2007 Jason Hunter & Brett McLaughlin.
6 All rights reserved.
7
8 Redistribution and use in source and binary forms, with or without
9 modification, are permitted provided that the following conditions
10 are met:
11
12 1. Redistributions of source code must retain the above copyright
13 notice, this list of conditions, and the following disclaimer.
14
15 2. Redistributions in binary form must reproduce the above copyright
16 notice, this list of conditions, and the disclaimer that follows
17 these conditions in the documentation and/or other materials
18 provided with the distribution.
19
20 3. The name "JDOM" must not be used to endorse or promote products
21 derived from this software without prior written permission. For
22 written permission, please contact <request_AT_jdom_DOT_org>.
23
24 4. Products derived from this software may not be called "JDOM", nor
25 may "JDOM" appear in their name, without prior written permission
26 from the JDOM Project Management <request_AT_jdom_DOT_org>.
27
28 In addition, we request (but do not require) that you include in the
29 end-user documentation provided with the redistribution and/or in the
30 software itself an acknowledgement equivalent to the following:
31 "This product includes software developed by the
32 JDOM Project (http://www.jdom.org/)."
33 Alternatively, the acknowledgment may be graphical using the logos
34 available at http://www.jdom.org/images/logos.
35
36 THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
37 WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
38 OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
39 DISCLAIMED. IN NO EVENT SHALL THE JDOM AUTHORS OR THE PROJECT
40 CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
41 SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
42 LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
43 USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
44 ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
45 OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
46 OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
47 SUCH DAMAGE.
48
49 This software consists of voluntary contributions made by many
50 individuals on behalf of the JDOM Project and was originally
51 created by Jason Hunter <jhunter_AT_jdom_DOT_org> and
52 Brett McLaughlin <brett_AT_jdom_DOT_org>. For more information
53 on the JDOM Project, please see <http://www.jdom.org/>.
54
55 */
56
57 package org.jdom.filter;
58
59 import java.io.*;
60 import org.jdom.*;
61
62 /**
63 * A Filter that only matches {@link org.jdom.Element} objects.
64 *
65 * @version $Revision: 1.20 $, $Date: 2007/11/10 05:29:00 $
66 * @author Jools Enticknap
67 * @author Bradley S. Huffman
68 */
69 public class ElementFilter extends AbstractFilter {
70
71 private static final String CVS_ID =
72 "@(#) $RCSfile: ElementFilter.java,v $ $Revision: 1.20 $ $Date: 2007/11/10 05:29:00 $ $Name: jdom_1_1_1 $";
73
74 /** The element name */
75 private String name;
76
77 /** The element namespace */
78 private transient Namespace namespace;
79
80 /**
81 * Select only the Elements.
82 */
83 public ElementFilter() {}
84
85 /**
86 * Select only the Elements with the supplied name in any Namespace.
87 *
88 * @param name The name of the Element.
89 */
90 public ElementFilter(String name) {
91 this.name = name;
92 }
93
94 /**
95 * Select only the Elements with the supplied Namespace.
96 *
97 * @param namespace The namespace the Element lives in.
98 */
99 public ElementFilter(Namespace namespace) {
100 this.namespace = namespace;
101 }
102
103 /**
104 * Select only the Elements with the supplied name and Namespace.
105 *
106 * @param name The name of the Element.
107 * @param namespace The namespace the Element lives in.
108 */
109 public ElementFilter(String name, Namespace namespace) {
110 this.name = name;
111 this.namespace = namespace;
112 }
113
114 /**
115 * Check to see if the object matches a predefined set of rules.
116 *
117 * @param obj The object to verify.
118 * @return <code>true</code> if the objected matched a predfined
119 * set of rules.
120 */
121 public boolean matches(Object obj) {
122 if (obj instanceof Element) {
123 Element el = (Element) obj;
124 return
125 (this.name == null || this.name.equals(el.getName())) &&
126 (this.namespace == null || this.namespace.equals(el.getNamespace()));
127 }
128 return false;
129 }
130
131 /**
132 * Returns whether the two filters are equivalent (i&#46;e&#46; the
133 * matching names and namespace are equivalent).
134 *
135 * @param obj the object to compare against
136 * @return whether the two filters are equal
137 */
138 public boolean equals(Object obj) {
139 // Generated by IntelliJ
140 if (this == obj) return true;
141 if (!(obj instanceof ElementFilter)) return false;
142
143 final ElementFilter filter = (ElementFilter) obj;
144
145 if (name != null ? !name.equals(filter.name) : filter.name != null) return false;
146 if (namespace != null ? !namespace.equals(filter.namespace) : filter.namespace != null) return false;
147
148 return true;
149 }
150
151 public int hashCode() {
152 // Generated by IntelliJ
153 int result;
154 result = (name != null ? name.hashCode() : 0);
155 result = 29 * result + (namespace != null ? namespace.hashCode() : 0);
156 return result;
157 }
158
159 // Support a custom Namespace serialization so no two namespace
160 // object instances may exist for the same prefix/uri pair
161 private void writeObject(ObjectOutputStream out) throws IOException {
162
163 out.defaultWriteObject();
164
165 // We use writeObject() and not writeUTF() to minimize space
166 // This allows for writing pointers to already written strings
167 if (namespace != null) {
168 out.writeObject(namespace.getPrefix());
169 out.writeObject(namespace.getURI());
170 }
171 else {
172 out.writeObject(null);
173 out.writeObject(null);
174 }
175 }
176
177 private void readObject(ObjectInputStream in)
178 throws IOException, ClassNotFoundException {
179
180 in.defaultReadObject();
181
182 Object prefix = in.readObject();
183 Object uri = in.readObject();
184
185 if (prefix != null) { // else leave namespace null here
186 namespace = Namespace.getNamespace((String) prefix, (String) uri);
187 }
188 }
189 }