1 /* 2 * Copyright (c) 2004 World Wide Web Consortium, 3 * 4 * (Massachusetts Institute of Technology, European Research Consortium for 5 * Informatics and Mathematics, Keio University). All Rights Reserved. This 6 * work is distributed under the W3C(r) Software License [1] in the hope that 7 * it will be useful, but WITHOUT ANY WARRANTY; without even the implied 8 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 9 * 10 * [1] http://www.w3.org/Consortium/Legal/2002/copyright-software-20021231 11 */ 12 13 package org.w3c.dom.xpath; 14 15 /** 16 * The <code>XPathNSResolver</code> interface permit <code>prefix</code> 17 * strings in the expression to be properly bound to 18 * <code>namespaceURI</code> strings. <code>XPathEvaluator</code> can 19 * construct an implementation of <code>XPathNSResolver</code> from a node, 20 * or the interface may be implemented by any application. 21 * <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>. 22 */ 23 public interface XPathNSResolver { 24 /** 25 * Look up the namespace URI associated to the given namespace prefix. The 26 * XPath evaluator must never call this with a <code>null</code> or 27 * empty argument, because the result of doing this is undefined. 28 * @param prefix The prefix to look for. 29 * @return Returns the associated namespace URI or <code>null</code> if 30 * none is found. 31 */ lookupNamespaceURI(String prefix)32 public String lookupNamespaceURI(String prefix); 33 34 } 35