org.w3c.dom.xpath.XPathNSResolver Maven / Gradle / Ivy
/*
* Copyright (c) 2002 World Wide Web Consortium,
* (Massachusetts Institute of Technology, Institut National de
* Recherche en Informatique et en Automatique, Keio University). All
* Rights Reserved. This program is distributed under the W3C's Software
* Intellectual Property License. This program is distributed 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.
* See W3C License http://www.w3.org/Consortium/Legal/ for more details.
*/
package org.w3c.dom.xpath;
/**
*
* DOM Level 3 WD Experimental:
* The DOM Level 3 specification is at the stage
* of Working Draft, which represents work in
* progress and thus may be updated, replaced,
* or obsoleted by other documents at any time.
* 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.
*/
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.Null /
* empty prefix passed to XPathNSResolver should return default
* namespace.Do not permit nullto be passed in invocation,
* allowing the implementation, if shared, to do anything it wants with
* a passed null.It would be confusing to specify more than
* this since the resolution of namespaces for XPath expressions never
* requires the default namespace.Null returns are problematic.No change.
* They should be adequately addressed in core. Some implementations
* have not properly supported them, but they will be fixed to be
* compliant. Bindings are still free to choose alternative
* representations of nullwhere required.
* @param prefix The prefix to look for.
* @return Returns the associated namespace URI or null if
* none is found.
*/
public String lookupNamespaceURI(String prefix);
}