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// -*- C++ -*-
//=============================================================================
/**
* @file XML_Loader.h
*
* $Id$
*
* A topology saver class that outputs XML.
*
* @author Jonathan Pollack <pollack_j@ociweb.com>
*/
//=============================================================================
#ifndef XML_LOADER_H
#define XML_LOADER_H
#include /**/ "ace/pre.h"
#include /**/ "ace/config-all.h"
#if !defined (ACE_LACKS_PRAGMA_ONCE)
#pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */
#include "orbsvcs/Notify/Topology_Loader.h"
#include "ACEXML/common/DefaultHandler.h"
#include "ACEXML/parser/parser/Parser.h"
#include "ACEXML/common/FileCharStream.h"
#include "ace/streams.h"
TAO_BEGIN_VERSIONED_NAMESPACE_DECL
namespace TAO_Notify
{
/// \brief Load Notification Service Topology from an XML file.
class XML_Loader : public ACEXML_DefaultHandler , public Topology_Loader
{
public:
/// The constructor.
XML_Loader ();
virtual ~XML_Loader ();
/// Open a file and perform preliminary validation to determine whether
/// the file is complete and valid.
bool open (const ACE_TString & file_name);
///////////////////////////////////
// Override Topology_Loader methods
// see Topology_Loader.h for documentation
virtual void load (Topology_Object *root);
/////////////////////////////////////////
// Override ACEXML_DefaultHandler methods
virtual void startElement (const ACEXML_Char* namespaceURI,
const ACEXML_Char* localName,
const ACEXML_Char* qName,
ACEXML_Attributes* atts ACEXML_ENV_ARG_DECL);
virtual void endElement (const ACEXML_Char*,
const ACEXML_Char*,
const ACEXML_Char* name ACEXML_ENV_ARG_DECL_NOT_USED);
private:
/// The name of the file from which data is read.
ACE_TString file_name_;
/// A stream representing our current output.
FILE * input_;
typedef ACE_Unbounded_Stack<Topology_Object*> TopoStack;
TopoStack object_stack_;
/// if false, then we're just checking syntax of topology file.
bool live_;
};
} // namespace TAO_Notify
TAO_END_VERSIONED_NAMESPACE_DECL
#include /**/ "ace/post.h"
#endif /* XML_LOADER_H */
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