Synopsis

Creates a servant to instantiate a C++ object.

C++ Binding

class Server {
public:
      Tobj_Servant     create_servant(const char* interfaceName);
};

Argument

Exception

If an exception is thrown in Server::create_servant(), the TP Framework catches the exception. Activation fails. A CORBA::OBJECT_NOT_EXIST() exception is raised back to the client. In addition, an error message is written to the user log (ULOG) file, as follows, for each exception type:

Description

The create_servant method is invoked by the TP Framework when a request arrives at the server and there is no available servant to satisfy the request. The TP Framework calls the create_servant method with the interface name for the servant to be created. The server application instantiates an appropriate C++ object and returns a pointer to it. Typically, the method contains a switch statement on the interface name and creates a new object, depending on the interface name.

Caution: The server application must not depend on this method being invoked for every activation of a CORBA object. The server application must not do any handling of CORBA object state in the constructors or destructors of any servant classes for CORBA objects. This is because the TP Framework may possibly reuse servants on activation and may possibly not destroy servants on deactivation.

Return Value