#ifndef DOMXPathNSResolver_HEADER_GUARD_

#define DOMXPathNSResolver_HEADER_GUARD_

/*

 * Licensed to the Apache Software Foundation (ASF) under one or more

 * contributor license agreements.  See the NOTICE file distributed with

 * this work for additional information regarding copyright ownership.

 * The ASF licenses this file to You under the Apache License, Version 2.0

 * (the "License"); you may not use this file except in compliance with

 * the License.  You may obtain a copy of the License at

 * 

 *      http://www.apache.org/licenses/LICENSE-2.0

 * 

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

#include <xercesc/util/XercesDefs.hpp>

XERCES_CPP_NAMESPACE_BEGIN

/**

 * The <code>DOMXPathNSResolver</code> interface permit prefix strings

 * in the expression to be properly bound to namespaceURI strings. 

 * <code>DOMXPathEvaluator</code> can construct an implementation of 

 * <code>DOMXPathNSResolver</code> from a node, or the interface may be

 * implemented by any application.

 * @since DOM Level 3

 */

class CDOM_EXPORT DOMXPathNSResolver

{

protected:

    // -----------------------------------------------------------------------

    //  Hidden constructors

    // -----------------------------------------------------------------------

    /** @name Hidden constructors */

    //@{    

    DOMXPathNSResolver() {};

    //@}

private:

    // -----------------------------------------------------------------------

    // Unimplemented constructors and operators

    // -----------------------------------------------------------------------

    /** @name Unimplemented constructors and operators */

    //@{

    DOMXPathNSResolver(const DOMXPathNSResolver &);

    DOMXPathNSResolver& operator = (const  DOMXPathNSResolver&);

    //@}

public:

    // -----------------------------------------------------------------------

    //  All constructors are hidden, just the destructor is available

    // -----------------------------------------------------------------------

    /** @name Destructor */

    //@{

    /**

     * Destructor

     *

     */

    virtual ~DOMXPathNSResolver() {};

    //@}

    // -----------------------------------------------------------------------

    // Virtual DOMDocument interface

    // -----------------------------------------------------------------------

    /** @name Functions introduced in DOM Level 3 */

    //@{

    /** 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.

     * @param prefix of type XMLCh - The prefix to look for.

     * @return the associated namespace URI or null if none is found.

     */

    virtual const XMLCh*          lookupNamespaceURI(const XMLCh* prefix) const = 0;

    //@}

    // -----------------------------------------------------------------------

    // Non-standard extension

    // -----------------------------------------------------------------------

    /** @name Non-standard extension */

    //@{

    /**

     * Non-standard extension

     *

     * XPath2 implementations require a reverse lookup in the static context.

     * Look up the prefix associated with the namespace URI

     * The XPath evaluator must never call this with a null or empty argument, 

     * because the result of doing this is undefined.

     * @param URI of type XMLCh - The namespace to look for.

     * @return the associated prefix or null if none is found.

     */

    virtual const XMLCh*          lookupPrefix(const XMLCh* URI) const = 0;

    //@}

};

XERCES_CPP_NAMESPACE_END

#endif