C++ POA_ptr::create_servant_retention_policy方法代码示例

//
// initialize_poa
//
void Tao_Data_Channel_Service::initialize_poa (::PortableServer::POA_ptr poa)
{
  // Construct the policy list for the LoggingServerPOA.
  ::CORBA::PolicyList policies (6);
  policies.length (6);

  policies[0] = poa->create_thread_policy (PortableServer::ORB_CTRL_MODEL);
  policies[1] = poa->create_servant_retention_policy (PortableServer::RETAIN);
  policies[2] = poa->create_id_assignment_policy (PortableServer::SYSTEM_ID);
  policies[3] = poa->create_id_uniqueness_policy (PortableServer::UNIQUE_ID);
  policies[4] = poa->create_lifespan_policy (PortableServer::TRANSIENT);
  policies[5] = poa->create_request_processing_policy (PortableServer::USE_ACTIVE_OBJECT_MAP_ONLY);

  // Create the child POA for the test logger factory servants.
  this->poa_ =
    poa->create_POA ("DataChannelPOA",
                     ::PortableServer::POAManager::_nil (),
                     policies);

  for (size_t i = 0; i < 6; ++ i)
    policies[i]->destroy ();

  // Activate this POA's manager.
  PortableServer::POAManager_var the_mgr = this->poa_->the_POAManager ();
  the_mgr->activate ();
}

CORBA::Boolean
ImR_Adapter::unknown_adapter (PortableServer::POA_ptr parent,
                              const char *name)
{
  ACE_ASSERT (! CORBA::is_nil(parent));
  ACE_ASSERT (name != 0);
  CORBA::PolicyList policies (3);

  const char *exception_message = "Null Message";
  policies.length (3);
  try
    {
      // Servant Retention Policy
      exception_message = "While PortableServer::POA::create_servant_retention_policy";
      policies[0] =
        parent->create_servant_retention_policy (PortableServer::NON_RETAIN);

      // Request Processing Policy
      exception_message = "While PortableServer::POA::create_request_processing_policy";

      policies[1] =
        parent->create_request_processing_policy (PortableServer::USE_DEFAULT_SERVANT);
      policies[2] =
        parent->create_id_uniqueness_policy (PortableServer::MULTIPLE_ID);

      PortableServer::POAManager_var poa_manager =
        parent->the_POAManager ();

      exception_message = "While create_POA";
      PortableServer::POA_var child =
        parent->create_POA (name,
                            poa_manager.in (),
                            policies);

      exception_message = "While policy->destroy";
      for (CORBA::ULong i = 0; i < policies.length (); ++i)
        {
          CORBA::Policy_ptr policy = policies[i];
          policy->destroy ();
        }

      exception_message = "While child->the_activator";
      child->the_activator (this);

      exception_message = "While set_servant";
      child->set_servant (this->default_servant_);
    }
  catch (const CORBA::Exception& ex)
    {
      ORBSVCS_ERROR ((LM_ERROR,
                  "IMR_Adapter_Activator::unknown_adapter - %s\n",
                  exception_message));
      ex._tao_print_exception ("System Exception");
      return 0;
    }

  // Finally, now everything is fine
  return 1;
}

PortableServer::POA_ptr ossie::corba::createGCPOA(PortableServer::POA_ptr parent, const std::string& name)
{
    CORBA::PolicyList policy_list;
    policy_list.length(2);
    policy_list[0] = parent->create_servant_retention_policy(PortableServer::NON_RETAIN);
    policy_list[1] = parent->create_request_processing_policy(PortableServer::USE_SERVANT_MANAGER);

    PortableServer::POAManager_var poa_mgr = parent->the_POAManager();
    PortableServer::POA_var poa = parent->create_POA(name.c_str(), poa_mgr, policy_list);

    for (size_t ii = 0; ii < policy_list.length(); ++ii) {
        policy_list[ii]->destroy();
    }

    GCServantLocator* manager = new GCServantLocator();
    PortableServer::ServantManager_var manager_ref = manager->_this();
    poa->set_servant_manager(manager_ref);
    manager->_remove_ref();

    return poa._retn();
}

//.........这里部分代码省略.........
         }
       }
     }
     new_argv[new_argc - 2] = "-ORB_iiop_orb_port";
     new_argv[new_argc - 1] = port;

     int orb_argc     = port_given ? argc : new_argc;
     char ** orb_argv = port_given ? argv : new_argv;

     //
     // ORB initialization
     //
     my_global_orb = CORBA::ORB_init(orb_argc, orb_argv);

     // Get internal ORB 
     TIDorb::core::TIDORB* m_orb = 
       dynamic_cast<TIDorb::core::TIDORB*> (CORBA::ORB::_duplicate(my_global_orb));

     //
     // Getting RootPOA & Manager references
     //
     CORBA::Object_var poa_obj = my_global_orb->resolve_initial_references("RootPOA");
     PortableServer::POA_ptr rootPOA = PortableServer::POA::_narrow(poa_obj);

     PortableServer::POAManager_var manager = rootPOA->the_POAManager();


     //
     // NamingContexts POA creation
     //
     CORBA::PolicyList policies;
     policies.length(4);

     policies[0] = rootPOA->create_servant_retention_policy(PortableServer::RETAIN);
     policies[1] = rootPOA->create_request_processing_policy(
                                                   PortableServer::USE_SERVANT_MANAGER);
     policies[2] = rootPOA->create_id_assignment_policy(PortableServer::USER_ID);
     policies[3] = rootPOA->create_lifespan_policy(PortableServer::PERSISTENT);

     PortableServer::POA_var namingContextsPOA = 
       rootPOA->create_POA("namingContextsPOA", manager, policies);

     PortableServer::POAManager_var namingContextsManager = 
       namingContextsPOA->the_POAManager();


     //
     // BindingIterators POA creation
     //
     CORBA::PolicyList bindingIterators_policies;
     bindingIterators_policies.length(2);

     bindingIterators_policies[0] = 
       rootPOA->create_thread_policy(PortableServer::SINGLE_THREAD_MODEL); 
     bindingIterators_policies[1] = 
       rootPOA->create_id_assignment_policy(PortableServer::USER_ID);

     PortableServer::POA_var bindingIteratorsPOA = 
       namingContextsPOA->create_POA("bindingIteratorsPOA", namingContextsManager, 
                                     bindingIterators_policies);


     // 
     // Creates and sets a new ServantManager
     // 

void 
HomeServantBase::initialize
( PortableServer::POA_ptr root_poa
, Components::HomeExecutorBase_ptr home_executor
, ContainerInterfaceImpl* container
, std::string install_dir )
throw (Components::Deployment::InstallationFailure)
{
	home_executor_ = Components::HomeExecutorBase::_duplicate (home_executor);
	container_ = container;
	container_->_add_ref();
	install_dir_ = install_dir;

	// Create a new POA for the components
	CORBA::PolicyList policies;
	policies.length (7);
	policies[0] = root_poa->create_thread_policy (PortableServer::ORB_CTRL_MODEL);
	policies[1] = root_poa->create_lifespan_policy (PortableServer::TRANSIENT);
	policies[2] = root_poa->create_id_uniqueness_policy (PortableServer::UNIQUE_ID);
	policies[3] = root_poa->create_id_assignment_policy (PortableServer::USER_ID);
	policies[4] = root_poa->create_implicit_activation_policy (PortableServer::NO_IMPLICIT_ACTIVATION);
	policies[5] = root_poa->create_servant_retention_policy (PortableServer::NON_RETAIN);
	policies[6] = root_poa->create_request_processing_policy (PortableServer::USE_SERVANT_MANAGER);

	static CORBA::ULong poa_name = 0;
	char buffer[17];

	sprintf (buffer, "Qedo_POA_%ld", ++poa_name);
	
	try
	{
		home_poa_ = root_poa->create_POA (buffer, NULL, policies);
	}
	catch (PortableServer::POA::AdapterAlreadyExists&)
	{
		NORMAL_ERR ("HomeServantBase: Fatal internal error - POA already exists???");
		throw Components::Deployment::InstallationFailure();
	}
	catch (PortableServer::POA::InvalidPolicy&)
	{
		NORMAL_ERR ("HomeServantBase: Fatal internal error - Invalid policy during POA creation: ORB not CORBA 2.3 compliant???");
		throw Components::Deployment::InstallationFailure();
	}

	// Set servant locator
	try
	{
	    home_poa_->set_servant_manager (servant_locator_);
	}
	catch (PortableServer::POA::WrongPolicy&)
	{
		// Cannot be, since our POA has the right policies
		NORMAL_ERR ("HomeServantBase: Fatal internal error - Setting servant manager complains about a wrong policy???");
		throw Components::Deployment::InstallationFailure();
	}

	my_home_servant_ = dynamic_cast <PortableServer::Servant> (this);

	if (! my_home_servant_)
	{
		NORMAL_ERR ("HomeServantBase: initialize(): Cannot dynamic_cast this pointer to PortableServer::Servant");
		throw Components::Deployment::InstallationFailure();
	}

	// Activate the POA using the POA manager
	home_poa_manager_ = home_poa_->the_POAManager();

	home_poa_manager_->activate();

	// Create a first object reference, which belongs to this home
	CORBA::Object_var home_obj = this->create_primary_object_reference (repository_id_);
	my_object_id_ = this->reference_to_oid (home_obj);

	// Narrow the object reference for the home (this can involve remote _is_a() calls to the
	// servant, so it must be active at this time)
	my_home_ref_ = Components::CCMHome::_narrow (home_obj);
}