1 /* 2 * $Header: /home/projects/jaxen/scm/jaxen/src/java/main/org/jaxen/expr/DefaultAbsoluteLocationPath.java,v 1.18 2006/11/30 18:49:27 elharo Exp $ 3 * $Revision: 1.18 $ 4 * $Date: 2006/11/30 18:49:27 $ 5 * 6 * ==================================================================== 7 * 8 * Copyright 2000-2002 bob mcwhirter & James Strachan. 9 * All rights reserved. 10 * 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions are 14 * met: 15 * 16 * * Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 19 * * Redistributions in binary form must reproduce the above copyright 20 * notice, this list of conditions and the following disclaimer in the 21 * documentation and/or other materials provided with the distribution. 22 * 23 * * Neither the name of the Jaxen Project nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS 28 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A 30 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER 31 * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 32 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 33 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 34 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 35 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 36 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 37 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 38 * 39 * ==================================================================== 40 * This software consists of voluntary contributions made by many 41 * individuals on behalf of the Jaxen Project and was originally 42 * created by bob mcwhirter <bob@werken.com> and 43 * James Strachan <jstrachan@apache.org>. For more information on the 44 * Jaxen Project, please see <http://www.jaxen.org/>. 45 * 46 * $Id: DefaultAbsoluteLocationPath.java,v 1.18 2006/11/30 18:49:27 elharo Exp $ 47 */ 48 package org.jaxen.expr; 49 50 import java.util.Collections; 51 import java.util.List; 52 53 import org.jaxen.Context; 54 import org.jaxen.ContextSupport; 55 import org.jaxen.JaxenException; 56 import org.jaxen.Navigator; 57 import org.jaxen.util.SingletonList; 58 59 /*** 60 * @deprecated this class will become non-public in the future; 61 * use the interface instead 62 */ 63 public class DefaultAbsoluteLocationPath extends DefaultLocationPath 64 { 65 /*** 66 * 67 */ 68 private static final long serialVersionUID = 2174836928310146874L; 69 70 public DefaultAbsoluteLocationPath() 71 { 72 } 73 74 public String toString() 75 { 76 return "[(DefaultAbsoluteLocationPath): " + super.toString() + "]"; 77 } 78 79 public boolean isAbsolute() 80 { 81 return true; 82 } 83 84 public String getText() 85 { 86 return "/" + super.getText(); 87 } 88 89 public Object evaluate(Context context) throws JaxenException 90 { 91 ContextSupport support = context.getContextSupport(); 92 Navigator nav = support.getNavigator(); 93 Context absContext = new Context( support ); 94 List contextNodes = context.getNodeSet(); 95 96 if ( contextNodes.isEmpty() ) 97 { 98 return Collections.EMPTY_LIST; 99 } 100 101 Object firstNode = contextNodes.get( 0 ); 102 Object docNode = nav.getDocumentNode( firstNode ); 103 104 if ( docNode == null ) 105 { 106 return Collections.EMPTY_LIST; 107 } 108 109 List list = new SingletonList(docNode); 110 111 absContext.setNodeSet( list ); 112 113 return super.evaluate( absContext ); 114 } 115 116 } 117