/*
 * The Apache Software License, Version 1.1
 *
 *
 * Copyright (c) 1999 The Apache Software Foundation.  All rights 
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer. 
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:  
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
 *
 * 4. The names "Xalan" and "Apache Software Foundation" must
 *    not be used to endorse or promote products derived from this
 *    software without prior written permission. For written 
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache",
 *    nor may "Apache" appear in their name, without prior written
 *    permission of the Apache Software Foundation.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation and was
 * originally based on software copyright (c) 1999, International
 * Business Machines, Inc., http://www.ibm.com.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */
#if !defined(NAMESPACE_HEADER_GUARD_1357924680)
#define NAMESPACE_HEADER_GUARD_1357924680


// Base header file.  Must be first.
#include <XPath/XPathDefinitions.hpp>


#include <PlatformSupport/DOMStringHelper.hpp>


/**
 * A representation of a namespace.  One of these will be pushed on the
 * namespace stack for each element.
 */
class XALAN_XPATH_EXPORT NameSpace
{
public:

	explicit
	NameSpace() :
		m_prefix(),
		m_uri()
	{
	}

	/**
	 * Construct a namespace for placement on the 
	 * result tree namespace stack.
	 *
	 * @param prefix namespace prefix
	 * @param uri    URI of namespace
	 */
	NameSpace(
			const XalanDOMString&	prefix,
			const XalanDOMString&	uri) :
		m_prefix(prefix),
		m_uri(uri)
	{
	}

	~NameSpace()
	{
	}

	/**
	 * Retrieve the prefix for namespace
	 * 
	 * @return prefix string
	 */
	const XalanDOMString&
	getPrefix() const
	{
		return m_prefix;
	}

	/**
	 * Set the prefix for namespace
	 * 
	 * @param prefix The new prefix value
	 */
	void
	setPrefix(const XalanDOMString&		prefix)
	{
		m_prefix = prefix;
	}

	/**
	 * Retrieve the URI for namespace
	 * 
	 * @return URI string
	 */
	const XalanDOMString&
	getURI() const
	{
		return m_uri;
	}

	/**
	 * Set the URI for namespace
	 * 
	 * @param uri The new uri value
	 */
	void
	setURI(const XalanDOMString&	uri)
	{
		m_uri = uri;
	}

	/**
	 * Equality operator, necessary because DOMString::==()
	 * has screwy semantics.
	 *
	 * @param theRHS namespace to compare
	 */
	bool
	operator==(const NameSpace&		theRHS) const
	{
		return equals(m_prefix, theRHS.m_prefix) &&
			   equals(m_uri, theRHS.m_uri);
	}	

private:

	XalanDOMString	m_prefix;

	XalanDOMString	m_uri; // if length is 0, then Element namespace is empty.
};


#endif	// NAMESPACE_HEADER_GUARD_1357924680