1 /*
2 * $Header: /home/projects/jaxen/scm/jaxen/src/java/main/org/jaxen/pattern/NodeTypeTest.java,v 1.8 2006/02/05 21:47:42 elharo Exp $
3 * $Revision: 1.8 $
4 * $Date: 2006/02/05 21:47:42 $
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: NodeTypeTest.java,v 1.8 2006/02/05 21:47:42 elharo Exp $
46 */
47
48 package org.jaxen.pattern;
49
50 import org.jaxen.Context;
51
52 /*** <p><code>NodeTypeTest</code> matches if the node is of a certain type
53 * such as element, attribute, comment, text, processing instruction and so forth.</p>
54 *
55 * @author <a href="mailto:jstrachan@apache.org">James Strachan</a>
56 * @version $Revision: 1.8 $
57 */
58 public class NodeTypeTest extends NodeTest {
59
60 public static final NodeTypeTest DOCUMENT_TEST
61 = new NodeTypeTest( DOCUMENT_NODE );
62
63 public static final NodeTypeTest ELEMENT_TEST
64 = new NodeTypeTest( ELEMENT_NODE );
65
66 public static final NodeTypeTest ATTRIBUTE_TEST
67 = new NodeTypeTest( ATTRIBUTE_NODE );
68
69 public static final NodeTypeTest COMMENT_TEST
70 = new NodeTypeTest( COMMENT_NODE );
71
72 public static final NodeTypeTest TEXT_TEST
73 = new NodeTypeTest( TEXT_NODE );
74
75 public static final NodeTypeTest PROCESSING_INSTRUCTION_TEST
76 = new NodeTypeTest( PROCESSING_INSTRUCTION_NODE );
77
78 public static final NodeTypeTest NAMESPACE_TEST
79 = new NodeTypeTest( NAMESPACE_NODE );
80
81
82 private short nodeType;
83
84 public NodeTypeTest(short nodeType)
85 {
86 this.nodeType = nodeType;
87 }
88
89 /*** @return true if the pattern matches the given node
90 */
91 public boolean matches( Object node, Context context )
92 {
93 return nodeType == context.getNavigator().getNodeType( node );
94 }
95
96 public double getPriority()
97 {
98 return -0.5;
99 }
100
101
102 public short getMatchType()
103 {
104 return nodeType;
105 }
106
107 public String getText()
108 {
109 switch (nodeType)
110 {
111 case ELEMENT_NODE:
112 return "child()";
113 case ATTRIBUTE_NODE:
114 return "@*";
115 case NAMESPACE_NODE:
116 return "namespace()";
117 case DOCUMENT_NODE:
118 return "/";
119 case COMMENT_NODE:
120 return "comment()";
121 case TEXT_NODE:
122 return "text()";
123 case PROCESSING_INSTRUCTION_NODE:
124 return "processing-instruction()";
125 }
126 return "";
127 }
128
129 public String toString()
130 {
131 return super.toString() + "[ type: " + nodeType + " ]";
132 }
133 }