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-rw-r--r--TAO/tao/Servant_Base.h148
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diff --git a/TAO/tao/Servant_Base.h b/TAO/tao/Servant_Base.h
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--- a/TAO/tao/Servant_Base.h
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-// This may look like C, but it's really -*- C++ -*-
-// $Id$
-
-// ============================================================================
-//
-// = LIBRARY
-// TAO
-//
-// = FILENAME
-// Servant_Base.h
-//
-// = AUTHOR
-// Irfan Pyarali
-//
-// ============================================================================
-
-#ifndef TAO_SERVANT_BASE_H
-#define TAO_SERVANT_BASE_H
-
-class TAO_Export TAO_ServantBase
-{
- // = TITLE
- // Base class for skeletons and servants.
- //
- // = DESCRIPTION
- // The POA spec requires that all servants inherit from this
- // class.
-public:
- friend class TAO_POA;
- friend class CORBA_Object;
-
- virtual ~TAO_ServantBase (void);
- // destructor
-
- TAO_ServantBase &operator= (const TAO_ServantBase &);
- // assignment operator.
-
- virtual PortableServer::POA_ptr _default_POA (CORBA_Environment &_env = CORBA_Environment::default_environment ());
- // Returns the default POA for this servant.
-
- virtual void *_downcast (const char *repository_id) = 0;
- // Get the correct vtable.
-
- virtual STUB_Object *_create_stub (CORBA_Environment &_env = CORBA_Environment::default_environment ());
- // This is an auxiliar method for _this() and _narrow().
-
-protected:
- TAO_ServantBase (void);
- // Default constructor, only derived classes can be created.
-
- TAO_ServantBase (const TAO_ServantBase &);
- // Copy constructor, protected so no instances can be created.
-
- virtual CORBA::Boolean _is_a (const char* logical_type_id,
- CORBA_Environment &_env = CORBA_Environment::default_environment ());
- // Local implementation of the CORBA::Object::_is_a method.
-
- virtual void _dispatch (CORBA::ServerRequest &request,
- void *context,
- CORBA_Environment &_env = CORBA_Environment::default_environment ()) = 0;
- // Dispatches a request to the object: find the operation, cast the
- // type to the most derived type, demarshall all the parameters from
- // the request and finally invokes the operation, storing the
- // results and out parameters (if any) or the exceptions thrown into
- // <request>.
-
- virtual int _find (const char *opname,
- TAO_Skeleton &skelfunc);
- // Find an operation in the operation table.
-
- virtual int _bind (const char *opname,
- const TAO_Skeleton skel_ptr);
- // Register a CORBA IDL operation name.
-
- virtual const char *_interface_repository_id (void) const = 0;
- // Get this interface's repository id.
-
- TAO_Operation_Table *optable_;
- // The operation table for this servant, it is initialized by the
- // most derived class.
-};
-
-class TAO_Export TAO_Servant_Hash
-{
-public:
- u_long operator () (PortableServer::Servant servant) const;
- // Returns hash value.
-};
-
-class TAO_Export TAO_Local_ServantBase : public TAO_ServantBase
-{
- // = TITLE
- // Base class for local skeletons and servants.
-protected:
- STUB_Object *_create_stub (CORBA_Environment &_env = CORBA_Environment::default_environment ());
- // This is an auxiliar method for _this(). Make sure *not* to
- // register with the default POA
-};
-
-class TAO_Export TAO_DynamicImplementation : public virtual TAO_ServantBase
-{
- // = TITLE
- // Base class for DSI.
- //
- // = DESCRIPTION
- // It is expected that the <invoke> and <_primary_interface>
- // 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.
-public:
- virtual void invoke (CORBA::ServerRequest_ptr request,
- CORBA_Environment &_env = CORBA_Environment::default_environment ()) = 0;
- // The invoke() method receives requests issued to any CORBA object
- // incarnated by the DSI servant and performs the processing
- // necessary to execute the request.
-
- virtual CORBA::RepositoryId _primary_interface (const PortableServer::ObjectId &oid,
- PortableServer::POA_ptr poa,
- CORBA_Environment &_env = CORBA_Environment::default_environment ()) = 0;
- // 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.
-
- CORBA::Object_ptr _this (CORBA_Environment &_env = CORBA_Environment::default_environment ());
- // Returns a CORBA::Object_ptr for the target object.
-
-protected:
-
- 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 STUB_Object *_create_stub (CORBA_Environment &_env = CORBA_Environment::default_environment ());
- // This is an auxiliar method for _this() and _narrow().
-
- virtual void _dispatch (CORBA::ServerRequest &request,
- void *context,
- CORBA_Environment &_env = CORBA_Environment::default_environment ());
- // Turns around and calls invoke.
-};
-
-#if defined (__ACE_INLINE__)
-# include "tao/Servant_Base.i"
-#endif /* __ACE_INLINE__ */
-
-#endif /* TAO_SERVANT_BASE_H */