1 /*
2 * $Header: /home/projects/jaxen/scm/jaxen/src/java/main/org/jaxen/pattern/NodeTypeTest.java,v 1.7 2005/06/28 13:44:44 elharo Exp $
3 * $Revision: 1.7 $
4 * $Date: 2005/06/28 13:44:44 $
5 *
6 * ====================================================================
7 *
8 * Copyright (C) 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
13 * are met:
14 *
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions, and the following disclaimer.
17 *
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions, and the disclaimer that follows
20 * these conditions in the documentation and/or other materials
21 * provided with the distribution.
22 *
23 * 3. The name "Jaxen" must not be used to endorse or promote products
24 * derived from this software without prior written permission. For
25 * written permission, please contact license@jaxen.org.
26 *
27 * 4. Products derived from this software may not be called "Jaxen", nor
28 * may "Jaxen" appear in their name, without prior written permission
29 * from the Jaxen Project Management (pm@jaxen.org).
30 *
31 * In addition, we request (but do not require) that you include in the
32 * end-user documentation provided with the redistribution and/or in the
33 * software itself an acknowledgement equivalent to the following:
34 * "This product includes software developed by the
35 * Jaxen Project <http://www.jaxen.org/>."
36 * Alternatively, the acknowledgment may be graphical using the logos
37 * available at http://www.jaxen.org/
38 *
39 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
40 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
41 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
42 * DISCLAIMED. IN NO EVENT SHALL THE Jaxen AUTHORS OR THE PROJECT
43 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
45 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
46 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
47 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
48 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
49 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
50 * SUCH DAMAGE.
51 *
52 * ====================================================================
53 * This software consists of voluntary contributions made by many
54 * individuals on behalf of the Jaxen Project and was originally
55 * created by bob mcwhirter <bob@werken.com> and
56 * James Strachan <jstrachan@apache.org>. For more information on the
57 * Jaxen Project, please see <http://www.jaxen.org/>.
58 *
59 * $Id: NodeTypeTest.java,v 1.7 2005/06/28 13:44:44 elharo Exp $
60 */
61
62 package org.jaxen.pattern;
63
64 import org.jaxen.Context;
65
66 /*** <p><code>NodeTypeTest</code> matches if the node is of a certain type
67 * such as element, attribute, comment, text, processing instruction and so forth.</p>
68 *
69 * @author <a href="mailto:jstrachan@apache.org">James Strachan</a>
70 * @version $Revision: 1.7 $
71 */
72 public class NodeTypeTest extends NodeTest {
73
74 public static final NodeTypeTest DOCUMENT_TEST
75 = new NodeTypeTest( DOCUMENT_NODE );
76
77 public static final NodeTypeTest ELEMENT_TEST
78 = new NodeTypeTest( ELEMENT_NODE );
79
80 public static final NodeTypeTest ATTRIBUTE_TEST
81 = new NodeTypeTest( ATTRIBUTE_NODE );
82
83 public static final NodeTypeTest COMMENT_TEST
84 = new NodeTypeTest( COMMENT_NODE );
85
86 public static final NodeTypeTest TEXT_TEST
87 = new NodeTypeTest( TEXT_NODE );
88
89 public static final NodeTypeTest PROCESSING_INSTRUCTION_TEST
90 = new NodeTypeTest( PROCESSING_INSTRUCTION_NODE );
91
92 public static final NodeTypeTest NAMESPACE_TEST
93 = new NodeTypeTest( NAMESPACE_NODE );
94
95
96 private short nodeType;
97
98 public NodeTypeTest(short nodeType)
99 {
100 this.nodeType = nodeType;
101 }
102
103 /*** @return true if the pattern matches the given node
104 */
105 public boolean matches( Object node, Context context )
106 {
107 return nodeType == context.getNavigator().getNodeType( node );
108 }
109
110 public double getPriority()
111 {
112 return -0.5;
113 }
114
115
116 public short getMatchType()
117 {
118 return nodeType;
119 }
120
121 public String getText()
122 {
123 switch (nodeType)
124 {
125 case ELEMENT_NODE:
126 return "child()";
127 case ATTRIBUTE_NODE:
128 return "@*";
129 case NAMESPACE_NODE:
130 return "namespace()";
131 case DOCUMENT_NODE:
132 return "/";
133 case COMMENT_NODE:
134 return "comment()";
135 case TEXT_NODE:
136 return "text()";
137 case PROCESSING_INSTRUCTION_NODE:
138 return "processing-instruction()";
139 }
140 return "";
141 }
142
143 public String toString()
144 {
145 return super.toString() + "[ type: " + nodeType + " ]";
146 }
147 }