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package org.w3c.dom.xpath;


The XPathNSResolver interface permit prefix strings in the expression to be properly bound to namespaceURI strings. XPathEvaluator can construct an implementation of XPathNSResolver from a node, or the interface may be implemented by any application.

See also the Document Object Model (DOM) Level 3 XPath Specification.

/** * 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/2002/08/WD-DOM-Level-3-XPath-20020820'>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 null or empty argument, because the result of doing this is undefined.
Params:
  • prefix – The prefix to look for.
Returns:Returns the associated namespace URI or null if none is found.
/** * 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. */
public String lookupNamespaceURI(String prefix); }