org.w3c.dom.xpath
Interface XPathNSResolver

public interface XPathNSResolver

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.

Method Summary

java.lang.String

lookupNamespaceURI(java.lang.String prefix) Look up the namespace URI associated to the given namespace prefix.

Method Detail

lookupNamespaceURI

public java.lang.String lookupNamespaceURI(java.lang.String prefix)

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.

Parameters:

prefix - The prefix to look for.

Returns:

Returns the associated namespace URI or null if none is found.