XPathNSResolver


1   /*
2    * Copyright (c) 2002 World Wide Web Consortium,
3    * (Massachusetts Institute of Technology, Institut National de
4    * Recherche en Informatique et en Automatique, Keio University). All
5    * Rights Reserved. This program is distributed under the W3C's Software
6    * Intellectual Property License. This program is distributed in the
7    * hope that it will be useful, but WITHOUT ANY WARRANTY; without even
8    * the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
9    * PURPOSE.
10   * See W3C License http://www.w3.org/Consortium/Legal/ for more details.
11   */
12  
13  package org.w3c.dom.xpath;
14  
15  
16  /**
17   * The <code>XPathNSResolver</code> interface permit <code>prefix</code> 
18   * strings in the expression to be properly bound to 
19   * <code>namespaceURI</code> strings. <code>XPathEvaluator</code> can 
20   * construct an implementation of <code>XPathNSResolver</code> from a node, 
21   * or the interface may be implemented by any application.
22   * <p>See also the <a HREF='http://www.w3.org/2002/08/WD-DOM-Level-3-XPath-20020820'>Document Object Model (DOM) Level 3 XPath Specification</a>.
23   */
24  public interface XPathNSResolver {
25      /**
26       * Look up the namespace URI associated to the given namespace prefix. The 
27       * XPath evaluator must never call this with a <code>null</code> or 
28       * empty argument, because the result of doing this is undefined.
29       * @param prefix The prefix to look for.
30       * @return Returns the associated namespace URI or <code>null</code> if 
31       *   none is found.
32       */
33      public String   lookupNamespaceURI(String   prefix);
34  
35  }
36

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