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// -*- C++ -*-
//=============================================================================
/**
* @file Flat_File_Persistence.h
*
* $Id$
*
* @author Marina Spivak <marina@cs.wustl.edu>
*/
//=============================================================================
#ifndef TAO_FLAT_FILE_PERSISTENCE_H
#define TAO_FLAT_FILE_PERSISTENCE_H
#include "orbsvcs/Naming/Storable.h"
#include "ace/OS_NS_stdio.h"
TAO_BEGIN_VERSIONED_NAMESPACE_DECL
//------------------------------------------------------------------------
// The Flat File concrete classes
//------------------------------------------------------------------------
class TAO_NS_FlatFileStream : public TAO_Storable_Base
{
public:
TAO_NS_FlatFileStream(const ACE_CString & file, const char * mode);
virtual ~TAO_NS_FlatFileStream();
/// Remove a file by name (file is not open)
virtual void remove();
/// Check if a file exists on disk (file is not open)
virtual int exists();
/// Open a file (the remaining methods below all require an open file)
virtual int open();
/// Close an open file
virtual int close();
/// Acquire a file lock
virtual int flock (int whence, int start, int len);
/// Release a file lock
virtual int funlock (int whence, int start, int len);
/// Returns the last time an open file was changed
virtual time_t last_changed(void);
/// Write a header to disk
virtual TAO_Storable_Base& operator << (
const TAO_NS_Persistence_Header& header);
/// Read a header from disk
virtual TAO_Storable_Base& operator >> (
TAO_NS_Persistence_Header& header);
/// Write a record to disk
virtual TAO_Storable_Base& operator << (
const TAO_NS_Persistence_Record& record);
/// Read a record from disk
virtual TAO_Storable_Base& operator >> (
TAO_NS_Persistence_Record& record);
/// Write the global data to disk
virtual TAO_Storable_Base& operator << (
const TAO_NS_Persistence_Global& global);
/// Read the global data from disk
virtual TAO_Storable_Base& operator >> (
TAO_NS_Persistence_Global& global);
private:
ACE_OS::ace_flock_t filelock_;
FILE* fl_;
ACE_CString file_;
ACE_CString mode_;
};
class TAO_NS_FlatFileFactory : public TAO_Naming_Service_Persistence_Factory
{
public:
// Factory Methods
/// Create the stream that can operate on a disk file
virtual TAO_Storable_Base *create_stream(const ACE_CString & file,
const ACE_TCHAR * mode);
};
TAO_END_VERSIONED_NAMESPACE_DECL
#endif
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