TAO_DynamicImplementation Class Reference

Base class for DSI. More...

#include <Dynamic_Implementation.h>

List of all members.

Public Member Functions
virtual void	invoke (CORBA::ServerRequest_ptr request)=0
virtual CORBA::RepositoryId	_primary_interface (const PortableServer::ObjectId &oid, PortableServer::POA_ptr poa)=0
virtual CORBA::Boolean	_is_a (const char *logical_type_id)
	Local implementation of the CORBA::Object::_is_a method.
CORBA::Object_ptr	_this (void)
	Returns a CORBA::Object_ptr for the target object.
virtual CORBA::InterfaceDef_ptr	_get_interface (void)
	Query the Interface Repository for the interface definition.
Protected Member Functions
virtual const char *	_interface_repository_id (void) const
	Return 0. Should never be used.
virtual void *	_downcast (const char *repository_id)
	Simply returns "this".
virtual TAO_Stub *	_create_stub (void)
	This is an auxiliary method for _this() and _narrow().
virtual void	_dispatch (TAO_ServerRequest &request, void *context)
	Turns around and calls invoke.
Private Member Functions
CORBA::RepositoryId	get_id_from_primary_interface (void)
	Encapsulates code common to _is_a(), _get_interface() and _create_stub().

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Detailed Description

Base class for DSI.

It is expected that the and methods will be only invoked by the POA in the context of serving a CORBA request. Invoking this method in other circumstances may lead to unpredictable results.

Definition at line 51 of file Dynamic_Implementation.h.

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Member Function Documentation

TAO_Stub * TAO_DynamicImplementation::_create_stub (  void   )  [protected, virtual]

This is an auxiliary method for _this() and _narrow(). Definition at line 83 of file Dynamic_Implementation.cpp. References _primary_interface(), TAO_TSS_Resources::instance(), and TAO_TSS_Resources::poa_current_impl_. Referenced by _this(). { // If DynamicImplementation::_this() is invoked outside of the // context of a request invocation on a target object being served // by the DSI servant, it raises the PortableServer::WrongPolicy // exception. See the CORBA C++ mapping, section 1.38.3. TAO::Portable_Server::POA_Current_Impl *poa_current_impl = static_cast <TAO::Portable_Server::POA_Current_Impl *> (TAO_TSS_Resources::instance ()->poa_current_impl_); if (poa_current_impl == 0 || this != poa_current_impl->servant ()) { throw PortableServer::POA::WrongPolicy (); } PortableServer::POA_var poa = poa_current_impl->get_POA (); CORBA::PolicyList_var client_exposed_policies = poa_current_impl->poa ()->client_exposed_policies ( poa_current_impl->priority ()); CORBA::RepositoryId_var pinterface = this->_primary_interface (poa_current_impl->object_id (), poa.in ()); return poa_current_impl->poa ()->key_to_stub (poa_current_impl->object_key (), pinterface.in (), poa_current_impl->priority ()); }

void TAO_DynamicImplementation::_dispatch (  TAO_ServerRequest &  request, void *  context )  [protected, virtual]

Turns around and calls invoke. Definition at line 116 of file Dynamic_Implementation.cpp. References ACE_NEW, CORBA::ServerRequest::dsi_marshal(), TAO_ServerRequest::forward_location(), TAO_ServerRequest::init_reply(), invoke(), CORBA::is_nil(), TAO_ServerRequest::response_expected(), TAO_ServerRequest::send_no_exception_reply(), TAO_ServerRequest::sync_with_server(), and TAO_ServerRequest::tao_send_reply(). { // No need to do any of this if the client isn't waiting. if (request.response_expected ()) { if (!CORBA::is_nil (request.forward_location ())) { request.init_reply (); request.tao_send_reply (); // No need to invoke in this case. return; } else if (request.sync_with_server ()) { // The last line before the call to this function // was an ACE_CHECK_RETURN, so if we're here, we // know there is no exception so far, and that's all // a SYNC_WITH_SERVER client request cares about. request.send_no_exception_reply (); } } // Create DSI request object. CORBA::ServerRequest *dsi_request = 0; ACE_NEW (dsi_request, CORBA::ServerRequest (request)); try { // Delegate to user. this->invoke (dsi_request); // Only if the client is waiting. if (request.response_expected () && !request.sync_with_server ()) { dsi_request->dsi_marshal (); } } catch (const ::CORBA::Exception& ex) { // Only if the client is waiting. if (request.response_expected () && !request.sync_with_server ()) { request.tao_send_reply_exception (ex); } } ::CORBA::release (dsi_request); }

void * TAO_DynamicImplementation::_downcast (  const char *  repository_id  )  [protected, virtual]

Simply returns "this". Definition at line 76 of file Dynamic_Implementation.cpp. { // Don't know enough to do better. return this; }

CORBA::InterfaceDef_ptr TAO_DynamicImplementation::_get_interface (  void   )  [virtual]

Query the Interface Repository for the interface definition. Definition at line 50 of file Dynamic_Implementation.cpp. References get_id_from_primary_interface(), TAO_IFR_Client_Adapter::get_interface(), ACE_Dynamic_Service< TYPE >::instance(), and TAO_ORB_Core_instance(). { TAO_IFR_Client_Adapter *adapter = ACE_Dynamic_Service<TAO_IFR_Client_Adapter>::instance ( TAO_ORB_Core::ifr_client_adapter_name ()); if (adapter == 0) { throw ::CORBA::INTF_REPOS (); } CORBA::RepositoryId_var id = this->get_id_from_primary_interface (); // This doesn't take multiple ORBs into account, but it's being // used only to resolve the IFR, so we should be ok. return adapter->get_interface (TAO_ORB_Core_instance ()->orb (), id.in ()); }

const char * TAO_DynamicImplementation::_interface_repository_id (  void   )  const [protected, virtual]

Return 0. Should never be used. Definition at line 69 of file Dynamic_Implementation.cpp. { // This should never be called. return 0; }

TAO_BEGIN_VERSIONED_NAMESPACE_DECL CORBA::Boolean TAO_DynamicImplementation::_is_a (  const char *  logical_type_id  )  [virtual]

Local implementation of the CORBA::Object::_is_a method. Definition at line 22 of file Dynamic_Implementation.cpp. References get_id_from_primary_interface(), and ACE_OS::strcmp(). { CORBA::RepositoryId_var id = this->get_id_from_primary_interface (); return ACE_OS::strcmp (logical_type_id, id.in ()) == 0; }

virtual CORBA::RepositoryId TAO_DynamicImplementation::_primary_interface (  const PortableServer::ObjectId &  oid, PortableServer::POA_ptr  poa )  [pure virtual]

The _primary_interface() method receives an ObjectId value and a POA_ptr as input parameters and returns a valid RepositoryId representing the most-derived interface for that oid. Referenced by _create_stub(), and get_id_from_primary_interface().

CORBA::Object_ptr TAO_DynamicImplementation::_this (  void   )

Returns a CORBA::Object_ptr for the target object. Definition at line 30 of file Dynamic_Implementation.cpp. References _create_stub(), ACE_NEW_RETURN, and CORBA::Object_ptr. { // The _this() function returns a CORBA::Object_ptr for the target // object. Unlike _this() for static skeletons, its return type is // not interface-specific because a DSI servant may very well // incarnate multiple CORBA objects of different types. TAO_Stub *stub = this->_create_stub (); // Create a object. CORBA::Object_ptr retval = CORBA::Object_ptr (); ACE_NEW_RETURN (retval, CORBA::Object (stub, 1, this), CORBA::Object::_nil ()); return retval; }

CORBA::RepositoryId TAO_DynamicImplementation::get_id_from_primary_interface (  void   )  [private]

Encapsulates code common to _is_a(), _get_interface() and _create_stub(). Definition at line 169 of file Dynamic_Implementation.cpp. References _primary_interface(), TAO_TSS_Resources::instance(), and TAO_TSS_Resources::poa_current_impl_. Referenced by _get_interface(), and _is_a(). { // If this method is called outside of the // context of a request invocation on a target object being served // by the DSI servant, it raises the PortableServer::WrongPolicy // exception. See the CORBA C++ mapping, section 1.38.3. TAO::Portable_Server::POA_Current_Impl *poa_current_impl = static_cast <TAO::Portable_Server::POA_Current_Impl *> (TAO_TSS_Resources::instance ()->poa_current_impl_); if (poa_current_impl == 0 || this != poa_current_impl->servant ()) { throw PortableServer::POA::WrongPolicy (); } PortableServer::POA_var poa = poa_current_impl->get_POA (); return this->_primary_interface (poa_current_impl->object_id (), poa.in ()); }

virtual void TAO_DynamicImplementation::invoke (  CORBA::ServerRequest_ptr  request  )  [pure virtual]

The invoke() method receives requests issued to any CORBA object incarnated by the DSI servant and performs the processing necessary to execute the request. Referenced by _dispatch().

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

• Dynamic_Implementation.h
• Dynamic_Implementation.cpp

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