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1   /*
2    * $Header: /home/projects/jaxen/scm/jaxen/src/java/main/org/jaxen/expr/DefaultProcessingInstructionNodeStep.java,v 1.18 2007/01/06 12:21:12 elharo Exp $
3    * $Revision: 1.18 $
4    * $Date: 2007/01/06 12:21:12 $
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: DefaultProcessingInstructionNodeStep.java,v 1.18 2007/01/06 12:21:12 elharo Exp $
46   */
47  
48  
49  
50  package org.jaxen.expr;
51  
52  import org.jaxen.ContextSupport;
53  import org.jaxen.Navigator;
54  import org.jaxen.expr.iter.IterableAxis;
55  
56  /***
57   * @deprecated this class will become non-public in the future;
58   *     use the interface instead
59   */
60  public class DefaultProcessingInstructionNodeStep extends DefaultStep
61      implements ProcessingInstructionNodeStep
62  {
63      /***
64       * 
65       */
66      private static final long serialVersionUID = -4825000697808126927L;
67      private String name;
68  
69      public DefaultProcessingInstructionNodeStep(IterableAxis axis,
70                                                  String name,
71                                                  PredicateSet predicateSet)
72      {
73          super( axis, predicateSet );
74  
75          this.name = name;
76      }
77  
78      public String getName()
79      {
80          return this.name;
81      }
82  
83      public String getText()
84      {
85          StringBuffer buf = new StringBuffer();
86          buf.append(getAxisName());
87          buf.append("::processing-instruction(");
88          String name = getName();
89          if (name != null && name.length() != 0)
90          {
91              buf.append("'");
92              buf.append(name);
93              buf.append("'");
94          }
95          buf.append(")");
96          buf.append(super.getText());
97          return buf.toString();
98      }
99  
100     public boolean matches(Object node,
101                            ContextSupport support)
102     {
103         
104         Navigator nav = support.getNavigator();
105         if ( nav.isProcessingInstruction( node ) )
106         {
107             String name = getName();
108             if ( name == null || name.length() == 0 )
109             {
110                 return true;
111             }
112             else
113             {
114                 return name.equals( nav.getProcessingInstructionTarget( node ) );
115             }
116         }
117 
118         return false;
119         
120     }
121     
122 }