1 /* 2 * $Header: /home/projects/jaxen/scm/jaxen/src/java/main/org/jaxen/pattern/NodeTypeTest.java,v 1.6 2002/05/20 08:34:10 jstrachan Exp $ 3 * $Revision: 1.6 $ 4 * $Date: 2002/05/20 08:34:10 $ 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 1.6 2002/05/20 08:34:10 jstrachan 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: 1.6 $ 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 }