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1
61 package org.jaxen.expr;
62
63 import java.util.Collections  ;
64 import java.util.List ;
65
66 import org.jaxen.Context;
67 import org.jaxen.ContextSupport;
68 import org.jaxen.JaxenException;
69 import org.jaxen.Navigator;
70 import org.jaxen.util.SingletonList;
71
72 public class DefaultAbsoluteLocationPath extends DefaultLocationPath
73 {
74 public DefaultAbsoluteLocationPath()
75 {
76 }
77
78 public String toString()
79 {
80 return "[(DefaultAbsoluteLocationPath): " + super.toString() + "]";
81 }
82
83 public boolean isAbsolute()
84 {
85 return true;
86 }
87
88 public String getText()
89 {
90 return "/" + super.getText();
91 }
92
93 public Object evaluate(Context context) throws JaxenException
94 {
95 ContextSupport support = context.getContextSupport();
96 Navigator nav = support.getNavigator();
97 Context absContext = new Context( support );
98 List contextNodes = context.getNodeSet();
99
100 if ( contextNodes.isEmpty() )
101 {
102 return Collections.EMPTY_LIST;
103 }
104
105 Object firstNode = contextNodes.get( 0 );
106 Object docNode = nav.getDocumentNode( firstNode );
107
108 if ( docNode == null )
109 {
110 return Collections.EMPTY_LIST;
111 }
112
113 List list = new SingletonList(docNode);
114
115 absContext.setNodeSet( list );
116
117 return super.evaluate( absContext );
118 }
119
120 public void accept(Visitor visitor)
121 {
122 visitor.visit(this);
123 }
124 }
125
126 |
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