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1   /*
2    * $Header$
3    * $Revision$
4    * $Date$
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   * $Id$
46   */
47  
48  package org.jaxen.pattern;
49  
50  import org.jaxen.Context;
51  import org.jaxen.Navigator;
52  
53  /** <p><code>NamespaceTest</code> tests for a given namespace URI.</p>
54    *
55    * @author <a href="mailto:jstrachan@apache.org">James Strachan</a>
56    * @version $Revision$
57    * @deprecated will be removed in Jaxen 2.0
58    */
59  public class NamespaceTest extends NodeTest {
60      
61      /** The prefix to match against */
62      private String prefix;
63      
64      /** The type of node to match - either attribute or element */
65      private short nodeType;
66      
67      public NamespaceTest(String prefix, short nodeType)   
68      {
69          if ( prefix == null ) 
70          {
71              prefix = "";
72          }
73          this.prefix = prefix;
74          this.nodeType = nodeType;
75      }
76          
77      /** @return true if the pattern matches the given node
78        */
79      public boolean matches( Object node, Context context ) 
80      {
81          Navigator navigator = context.getNavigator();
82          String uri = getURI( node, context );
83          
84          if ( nodeType == Pattern.ELEMENT_NODE ) 
85          {
86              return navigator.isElement( node ) 
87                  && uri.equals( navigator.getElementNamespaceUri( node ) );
88          }
89          else if ( nodeType == Pattern.ATTRIBUTE_NODE ) 
90          {
91              return navigator.isAttribute( node )
92                  && uri.equals( navigator.getAttributeNamespaceUri( node ) );
93          }
94          return false;
95      }
96      
97      public double getPriority() 
98      {
99          return -0.25;
100     }
101 
102 
103     public short getMatchType() 
104     {
105         return nodeType;
106     }
107     
108     public String getText() 
109     {
110         return prefix + ":";
111     }
112     
113     public String toString()
114     {
115         return super.toString() + "[ prefix: " + prefix + " type: " + nodeType + " ]";
116     }
117     
118     /** Returns the URI of the current prefix or "" if no URI can be found
119      */
120     protected String getURI(Object node, Context context)
121     {
122         String uri = context.getNavigator().translateNamespacePrefixToUri( prefix, node );
123         if ( uri == null )
124         {
125             uri = context.getContextSupport().translateNamespacePrefixToUri( prefix );
126         }
127         if ( uri == null ) 
128         {
129             uri = "";
130         }
131         return uri;
132     }
133 }