content: /*
   * $Header$
   * $Revision$
   * $Date$
   *
   * ====================================================================
   *
   * Copyright 2000-2002 bob mcwhirter & James Strachan.
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions are
   * met:
   * 
   *   * Redistributions of source code must retain the above copyright
   *     notice, this list of conditions and the following disclaimer.
   * 
   *   * Redistributions in binary form must reproduce the above copyright
   *     notice, this list of conditions and the following disclaimer in the
   *     documentation and/or other materials provided with the distribution.
   * 
   *   * Neither the name of the Jaxen Project nor the names of its
   *     contributors may be used to endorse or promote products derived 
   *     from this software without specific prior written permission.
   * 
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
   * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
   * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
   * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
   * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
   * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
   * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
   * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
   * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
   * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   *
   * ====================================================================
   * This software consists of voluntary contributions made by many 
   * individuals on behalf of the Jaxen Project and was originally 
   * created by bob mcwhirter <bob@werken.com> and 
   * James Strachan <jstrachan@apache.org>.  For more information on the 
   * Jaxen Project, please see <http://www.jaxen.org/>.
   * 
   * $Id$
   */
  
  package org.jaxen.pattern;
  
  import org.jaxen.Context;
  
  /** <p><code>NodeTypeTest</code> matches if the node is of a certain type 
    * such as element, attribute, comment, text, processing instruction and so forth.</p>
    *
    * @author <a href="mailto:jstrachan@apache.org">James Strachan</a>
    * @version $Revision$
    */
  public class NodeTypeTest extends NodeTest {
      
      public static final NodeTypeTest DOCUMENT_TEST 
          = new NodeTypeTest( DOCUMENT_NODE );
      
      public static final NodeTypeTest ELEMENT_TEST 
          = new NodeTypeTest( ELEMENT_NODE );
      
      public static final NodeTypeTest ATTRIBUTE_TEST 
          = new NodeTypeTest( ATTRIBUTE_NODE );
      
      public static final NodeTypeTest COMMENT_TEST 
          = new NodeTypeTest( COMMENT_NODE );
      
      public static final NodeTypeTest TEXT_TEST 
          = new NodeTypeTest( TEXT_NODE );
      
      public static final NodeTypeTest PROCESSING_INSTRUCTION_TEST 
          = new NodeTypeTest( PROCESSING_INSTRUCTION_NODE );
      
      public static final NodeTypeTest NAMESPACE_TEST 
          = new NodeTypeTest( NAMESPACE_NODE );
      
      
      private short nodeType;
      
      public NodeTypeTest(short nodeType)   
      {
          this.nodeType = nodeType;
      }
          
      /** @return true if the pattern matches the given node
        */
      public boolean matches( Object node, Context context ) 
      {
          return nodeType == context.getNavigator().getNodeType( node );
      }
      
      public double getPriority() 
      {
          return -0.5;
      }
  
  
      public short getMatchType() 
      {
          return nodeType;
      }
      
      public String getText() 
      {
          switch (nodeType) 
          {
              case ELEMENT_NODE:
                  return "child()";
              case ATTRIBUTE_NODE:
                  return "@*";
              case NAMESPACE_NODE:
                  return "namespace()";
              case DOCUMENT_NODE:
                  return "/";
              case COMMENT_NODE:
                  return "comment()";
              case TEXT_NODE:
                  return "text()";
              case PROCESSING_INSTRUCTION_NODE:
                  return "processing-instruction()";
          }
          return "";
      }
      
      public String toString()
      {
          return super.toString() + "[ type: " + nodeType + " ]";
      }
  }
  