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//=============================================================================
/**
* @file File_i.h
*
* Defines the implementation classes for the File IDL
* module
*
* @author Irfan Pyarali
*/
//=============================================================================
#include "FileS.h"
/**
* @class FileImpl
*
* @brief FileImpl class provides the namespace for the File IDL module .
*/
class FileImpl
{
public:
/**
* @class Descriptor
*
* @brief Descriptor implements the Descriptor interface in the File
* Module A single Descriptor servant can serve multiple object
* references
*/
class Descriptor : public POA_File::Descriptor
{
public:
/// Constructor
Descriptor (PortableServer::POA_ptr poa);
/// Destructor
~Descriptor (void);
/// Returns the default POA of this object
PortableServer::POA_ptr _default_POA (void);
/// write buffer to File corresponding to this Descriptor
virtual CORBA::Long write (const File::Descriptor::DataBuffer &buffer);
virtual File::Descriptor::DataBuffer *read (CORBA::Long num_bytes);
/// seek to the offset in file from whence
virtual CORBA::ULong lseek (CORBA::ULong offset,
CORBA::Long whence);
/// closes the file corresponding to the requested ObjectID
virtual void destroy (void);
private:
/// Extracts the ACE_HANDLE from the objectID
ACE_HANDLE fd (void);
PortableServer::POA_var poa_;
};
/**
* @class System
*
* @brief File System implementation class.
*/
class System : public POA_File::System
{
public:
/// Constructor, Creates a single File Descriptor Servant and
/// registers it with the POA as the Default Servant
System (PortableServer::POA_ptr poa);
///Destructor
~System (void);
///Returns the default POA of this object
PortableServer::POA_ptr _default_POA (void);
/// Opens a file ,creates a Descriptor reference with the
/// ACE_HANDLE and returns that reference
File::Descriptor_ptr open (const char *file_name,
CORBA::Long flags);
private:
PortableServer::POA_var poa_;
/// The single File Descriptor servant which serves requests for
/// any Descriptor object under poa_.
Descriptor fd_servant_;
};
};
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