/*
 * The Apache Software License, Version 1.1
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 * originally based on software copyright (c) 2001, Institute for
 * Data Communications Systems, <http://www.nue.et-inf.uni-siegen.de/>.
 * The development of this software was partly funded by the European 
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/*
 * XSEC
 *
 * TXFMParser := A transformer used to transform a byte stream to DOM Nodes
 *
 * Author(s): Berin Lautenbach
 *
 * $Id: TXFMParser.hpp,v 1.4 2003/03/02 08:21:02 blautenb Exp $
 *
 */

#ifndef TXFMPARSER_INCLUDE
#define TXFMPARSER_INCLUDE

#include <xsec/transformers/TXFMBase.hpp>

/**
 * \brief Transformer to handle move between bytes and DOM
 * @ingroup internal
 *
 * THere is no "parser" transformation defined in DSIG, however there
 * is a requirement to be able to move between a byte stream and
 * a list of nodes.  For example, if a ref URI points to an external
 * document, and the first transformation on that document is an 
 * XPath expression, then the library uses this class to translate the
 * BYTE stream to a DOM document.
 */


class DSIG_EXPORT TXFMParser : public TXFMBase {

public:

	// Constructors and destructors

	TXFMParser(DOMDocument *);
	~TXFMParser();

	// Methods to get tranform output type and input requirement

	virtual TXFMBase::ioType getInputType(void);
	virtual TXFMBase::ioType getOutputType(void);
	virtual nodeType getNodeType(void);

	// Methods to set input data

	virtual void setInput(TXFMBase * newInput);

	// Methods to get output data

	virtual unsigned int readBytes(XMLByte * const toFill, const unsigned int maxToFill);
	virtual DOMDocument *getDocument();
	virtual DOMNode *getFragmentNode();
	virtual const XMLCh * getFragmentId();

	// Name space management
	virtual bool nameSpacesExpanded(void);
	virtual void expandNameSpaces(void);

	
private:
	
	TXFMParser();

	DOMDocument			* mp_parsedDoc;

};

#endif /* #define TXFMPARSER_INCLUDE */