content: /*
   * Copyright (c) 2004 World Wide Web Consortium,
   *
   * (Massachusetts Institute of Technology, European Research Consortium for
   * Informatics and Mathematics, Keio University). All Rights Reserved. This
   * work is distributed under the W3C(r) Software License [1] in the hope that
   * it will be useful, but WITHOUT ANY WARRANTY; without even the implied
   * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
   *
   * [1] http://www.w3.org/Consortium/Legal/2002/copyright-software-20021231
   */
  
  package mf.org.w3c.dom.xpath;
  
  /**
   * The <code>XPathNSResolver</code> interface permit <code>prefix</code>
   * strings in the expression to be properly bound to
   * <code>namespaceURI</code> strings. <code>XPathEvaluator</code> can
   * construct an implementation of <code>XPathNSResolver</code> from a node,
   * or the interface may be implemented by any application.
   * <p>See also the <a href='http://www.w3.org/TR/2004/NOTE-DOM-Level-3-XPath-20040226'>Document Object Model (DOM) Level 3 XPath Specification</a>.
   */
  public interface XPathNSResolver {
      /**
       * Look up the namespace URI associated to the given namespace prefix. The
       * XPath evaluator must never call this with a <code>null</code> or
       * empty argument, because the result of doing this is undefined.
       *
       * @param prefix The prefix to look for.
       * @return Returns the associated namespace URI or <code>null</code> if
       * none is found.
       */
      String lookupNamespaceURI(String prefix);
  
  }
  