TAO_AMH_DSI_Response_Handler Class Reference

This is the main class for DSI using AMH. More...

#include <AMH_DSI_Response_Handler.h>

Inheritance diagram for TAO_AMH_DSI_Response_Handler:

Collaboration diagram for TAO_AMH_DSI_Response_Handler:

Public Types
typedef TAO_AMH_DSI_Response_Handler_ptr	_ptr_type
typedef TAO_AMH_DSI_Response_Handler_var	_var_type

Public Member Functions
	TAO_AMH_DSI_Response_Handler (TAO_ServerRequest &sr)
	~TAO_AMH_DSI_Response_Handler ()
virtual void	invoke_reply (CORBA::NVList_ptr args, CORBA::NamedValue_ptr result)
virtual void	invoke_excep (TAO_AMH_DSI_Exception_Holder *h)
virtual void	invoke_location_forward (CORBA::Object_ptr fwd, CORBA::Boolean is_perm)
virtual void	gateway_exception_reply (CORBA::ULong reply_status, TAO_OutputCDR &encap)
virtual void	gateway_exception_reply (CORBA::ULong reply_status, TAO_InputCDR &encap)
void	_tao_byte_order (int byte_order)
int	_tao_byte_order ()
CORBA::Object_ptr	_this ()
	Returns a CORBA::Object_ptr for the target object.

Static Public Member Functions
static TAO_AMH_DSI_Response_Handler *	_duplicate (TAO_AMH_DSI_Response_Handler_ptr)
	CORBA Object related methods.
static TAO_AMH_DSI_Response_Handler *	_nil ()
static TAO_AMH_DSI_Response_Handler *	_narrow (CORBA::Object_ptr)
static TAO_AMH_DSI_Response_Handler *	_unchecked_narrow (CORBA::Object_ptr)

Protected Member Functions
virtual const char *	_interface_repository_id () const
	Return 0. Should never be used.
virtual void *	_downcast (const char *repository_id)
	Simply returns "this".

Private Attributes
TAO_ORB_Core *	orb_core_

Detailed Description

This is the main class for DSI using AMH.

With ordinary DSI, the POA calls _dispatch, which in turn calls invoke on the DSI handler. Invoke completely handles the request, and packages the result in the request object so that it can be marshalled and sent back to the caller.

With the AMH variation, the DSI handler's invoke method starts the processing, but delegates the result packaging to a response handler. This way, if the invocation takes a long time, or involves blocking calls, then the result handling can be managed by another thread. This is particularly useful for gateway implementations, where the middle tier should not have to block waiting for replies.

As this is built on the CORBA object model, there are separate classes representing the interface and the implementation.

Member Typedef Documentation

_ptr_type

typedef TAO_AMH_DSI_Response_Handler_ptr TAO_AMH_DSI_Response_Handler::_ptr_type

_var_type

typedef TAO_AMH_DSI_Response_Handler_var TAO_AMH_DSI_Response_Handler::_var_type

Constructor & Destructor Documentation

TAO_AMH_DSI_Response_Handler()

TAO_AMH_DSI_Response_Handler::TAO_AMH_DSI_Response_Handler

(

TAO_ServerRequest &

sr

)

~TAO_AMH_DSI_Response_Handler()

TAO_AMH_DSI_Response_Handler::~TAO_AMH_DSI_Response_Handler

(

)

Member Function Documentation

_downcast()

void * TAO_AMH_DSI_Response_Handler::_downcast ( const char * repository_id )

protectedvirtual

Simply returns "this".

_duplicate()

TAO_AMH_DSI_Response_Handler_ptr TAO_AMH_DSI_Response_Handler::_duplicate ( TAO_AMH_DSI_Response_Handler_ptr x )

static

CORBA Object related methods.

_interface_repository_id()

const char * TAO_AMH_DSI_Response_Handler::_interface_repository_id ( ) const

protectedvirtual

Return 0. Should never be used.

_narrow()

TAO_AMH_DSI_Response_Handler_ptr TAO_AMH_DSI_Response_Handler::_narrow ( CORBA::Object_ptr obj )

static

_nil()

TAO_AMH_DSI_Response_Handler_ptr TAO_AMH_DSI_Response_Handler::_nil ( )

static

_tao_byte_order() [1/2]

int TAO_AMH_DSI_Response_Handler::_tao_byte_order

(

)

Get the intended byte order for the message output stream. In case of gateway messages this could divert from the native byte order.

_tao_byte_order() [2/2]

void TAO_AMH_DSI_Response_Handler::_tao_byte_order

(

int

byte_order

)

Parameters

byte_order

The intended byte order for the message output stream. For use in message gateways that forward messages from sources with different byte order than the native order.

_this()

CORBA::Object_ptr TAO_AMH_DSI_Response_Handler::_this

(

)

Returns a CORBA::Object_ptr for the target object.

_unchecked_narrow()

TAO_AMH_DSI_Response_Handler_ptr TAO_AMH_DSI_Response_Handler::_unchecked_narrow ( CORBA::Object_ptr obj )

static

gateway_exception_reply() [1/2]

void TAO_AMH_DSI_Response_Handler::gateway_exception_reply ( CORBA::ULong reply_status, TAO_InputCDR & encap )

virtual

gateway_exception_reply() [2/2]

void TAO_AMH_DSI_Response_Handler::gateway_exception_reply ( CORBA::ULong reply_status, TAO_OutputCDR & encap )

virtual

invoke_excep()

void TAO_AMH_DSI_Response_Handler::invoke_excep ( TAO_AMH_DSI_Exception_Holder * h )

virtual

invoke_location_forward()

void TAO_AMH_DSI_Response_Handler::invoke_location_forward ( CORBA::Object_ptr fwd, CORBA::Boolean is_perm )

virtual

invoke_reply()

void TAO_AMH_DSI_Response_Handler::invoke_reply ( CORBA::NVList_ptr args, CORBA::NamedValue_ptr result )

virtual

Member Data Documentation

orb_core_

TAO_ORB_Core* TAO_AMH_DSI_Response_Handler::orb_core_

private

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The documentation for this class was generated from the following files:

• AMH_DSI_Response_Handler.h
• AMH_DSI_Response_Handler.cpp
• AMH_DSI_Response_Handler.inl