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 (void)
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)
CORBA::Object_ptr	_this ()
	Returns a CORBA::Object_ptr for the target object. More...

Static Public Member Functions
static TAO_AMH_DSI_Response_Handler *	_duplicate (TAO_AMH_DSI_Response_Handler_ptr)
	CORBA Object related methods. More...
static TAO_AMH_DSI_Response_Handler *	_nil (void)
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 (void) const
	Return 0. Should never be used. More...
virtual void *	_downcast (const char *repository_id)
	Simply returns "this". More...

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

typedef TAO_AMH_DSI_Response_Handler_ptr TAO_AMH_DSI_Response_Handler::_ptr_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_ServerRequest &

sr

)

TAO_AMH_DSI_Response_Handler::~TAO_AMH_DSI_Response_Handler

(

void

)

Member Function Documentation

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

protectedvirtual

Simply returns "this".

TAO_AMH_DSI_Response_Handler_ptr TAO_AMH_DSI_Response_Handler::_duplicate ( TAO_AMH_DSI_Response_Handler_ptr  x )

static

CORBA Object related methods.

const char * TAO_AMH_DSI_Response_Handler::_interface_repository_id ( void  ) const

protectedvirtual

Return 0. Should never be used.

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

static

TAO_AMH_DSI_Response_Handler_ptr TAO_AMH_DSI_Response_Handler::_nil ( void  )

static

CORBA::Object_ptr TAO_AMH_DSI_Response_Handler::_this

(

)

Returns a CORBA::Object_ptr for the target object.

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

static

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

virtual

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

virtual

void TAO_AMH_DSI_Response_Handler::invoke_excep ( TAO_AMH_DSI_Exception_Holder *  h )

virtual

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

virtual

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

virtual

Member Data Documentation

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