MICBA CORBA服務器與corbaloc訪問

Question

我正在使用MICO創建一個C++ CORBA服務器。

在我的系統中，客戶端應該能夠使用corbaloc地址（無名稱服務）直接訪問服務器中的corba對象。 你知道MICO是否提供這種功能嗎？我怎樣才能實現呢？我試過：

ORB_ptr orb = CORBA::ORB_init (argc, argv, "mico-local-orb"); 
Object_var obj = orb -> resolve_initial_references("RootPOA"); 
PortableServer::POA_var poa = PortableServer::POA::_narrow(obj); 
PortableServer::POAManager_var pman = poa -> the_POAManager(); 
pman -> activate(); 

PortableServer::ObjectId_var oid = PortableServer::string_to_ObjectId("hello"); 

HelloImpl* servant = new HelloImpl(); 

poa -> activate_object_with_id(oid.in(), servant); 
servant -> _remove_ref(); 

orb -> run(); 

此代碼與OMNIORB但不與MICO一起使用。

編輯：我也試圖與持久壽命的政策，但它不工作之一：

ORB_ptr orb = ORB_init(argc, argv); 
Object_var obj = orb -> resolve_initial_references("RootPOA"); 
PortableServer::POA_var poa = PortableServer::POA::_narrow(obj); 
PortableServer::POAManager_var pman = poa -> the_POAManager(); 
pman -> activate(); 

PortableServer::LifespanPolicy_var lifespan = 
    poa -> create_lifespan_policy(PortableServer::PERSISTENT); 
PortableServer::IdAssignmentPolicy_var idassignment = 
    poa -> create_id_assignment_policy (PortableServer::USER_ID); 
CORBA::PolicyList policies(2); 
policies.length(2); 
policies[0] = PortableServer::IdAssignmentPolicy::_duplicate(idassignment); 
policies[1] = PortableServer::LifespanPolicy::_duplicate(lifespan); 
PortableServer::POA_var child_poa = 
    poa -> create_POA("childPOA", pman.in(), policies); 
PortableServer::POAManager_var child_pman = child_poa -> the_POAManager(); 
child_pman -> activate(); 

idassignment -> destroy(); 
lifespan -> destroy(); 

HelloImpl* servant = new HelloImpl(); 

PortableServer::ObjectId_var oid = child_poa -> activate_object(servant); 
CORBA::Object_var ref = child_poa -> id_to_reference(oid.in()); 
PortableServer::ObjectId_var oid = PortableServer::string_to_ObjectId("hello"); 
child_poa -> activate_object_with_id (oid.in(), servant); 

orb -> run(); 

EDIT2： 我測試了服務器與嘗試string_to_object以下corbaloc地址的客戶端：

• corbaloc:iiop:localhost:12345/hello
• corbaloc:iiop:localhost:12345/childPOA/hello

但他們都沒有工作。我總是得到一個CORBA::OBJECT_NOT_EXIST異常。

感謝

Answer 1

對於美香，你必須使用POA層次的corbalo網址爲好。對於你的例子corbaloc::localhost:12345/childPOA/hello應該工作。

又見the Diploma thesis of Frank Pilhofer, the implementor of Mico's POA，其中規定

create a persistent POA with the name ``MyPOA'', and then activate an object 
using the ``MyObject'' Object Id, you could refer to that object using the IOR 

    iioploc://thishost:1234/MyService/MyPOA/MyObject 

編輯：你必須要對你的服務執行與服務名稱-POAImplName MyService