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* Copyright (c) 2004 World Wide Web Consortium,
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* (Massachusetts Institute of Technology, European Research Consortium for
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* Informatics and Mathematics, Keio University). All Rights Reserved. This
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* work is distributed under the W3C(r) Software License [1] in the hope that
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* it will be useful, but WITHOUT ANY WARRANTY; without even the implied
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* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* [1] http://www.w3.org/Consortium/Legal/2002/copyright-software-20021231
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package org.w3c.dom.xpath;
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* The <code>XPathNSResolver</code> interface permit <code>prefix</code>
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* strings in the expression to be properly bound to
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* <code>namespaceURI</code> strings. <code>XPathEvaluator</code> can
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* construct an implementation of <code>XPathNSResolver</code> from a node,
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* or the interface may be implemented by any application.
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* <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>.
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public interface XPathNSResolver {
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* Look up the namespace URI associated to the given namespace prefix. The
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* XPath evaluator must never call this with a <code>null</code> or
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* empty argument, because the result of doing this is undefined.
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* @param prefix The prefix to look for.
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* @return Returns the associated namespace URI or <code>null</code> if
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public String lookupNamespaceURI(String prefix);