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// This may look like C, but it's really -*- C++ -*-
// $Id$
// ============================================================================
//
// = LIBRARY
// TAO
//
// = FILENAME
// Request.h
//
// = DESCRIPTION
// Header file for CORBA's Dynamic Invocation Interface "Request"
// type.
//
// = AUTHOR
// Copyright 1994-1995 by Sun Microsystems, Inc.
//
// ============================================================================
#if !defined (TAO_REQUEST_H)
# define TAO_REQUEST_ H
class TAO_Export CORBA_Request
{
// = TITLE
// CORBA_Request
// = DESCRIPTION
// Provides a way to create requests and populate it with parameters for
// use in the Dynamic Invocation Interface
public:
CORBA::Object_ptr target (void) const;
// Return the target of this request.
const CORBA::Char *operation (void) const;
// Return the operation name for the request.
CORBA::NVList_ptr arguments (void);
// Return the arguments for the request.
CORBA::NamedValue_ptr result (void);
// Return the result for the request.
CORBA::ExceptionList_ptr exceptions (void);
// Return the exceptions resulting from this request.
CORBA::Environment *env (void);
// Return the <Environment> for this request.
void invoke (void);
// Perform method resolution and invoke an appropriate method. If
// the method returns successfully, its result is placed in the
// result argument specified on <create_request>. The behavior is
// undefined if this <Request> has already been used with a previous
// call to <invoke>, <send>, or <send_multiple_requests>.
void send_oneway (void);
// Send a oneway request.
// Pseudo object methods
static CORBA_Request* _duplicate (CORBA_Request*);
static CORBA_Request* _nil (void);
// = Reference counting.
CORBA::ULong _incr_refcnt (void);
CORBA::ULong _decr_refcnt (void);
private:
friend class CORBA_Object;
// following are not allowed
CORBA_Request (CORBA::Object_ptr obj,
const CORBA::Char *op,
CORBA::NVList_ptr args,
CORBA::NamedValue_ptr result,
CORBA::Flags flags);
CORBA_Request (CORBA::Object_ptr obj,
const CORBA::Char *op);
~CORBA_Request (void);
CORBA::Object_ptr target_;
// target object
const CORBA::Char *opname_;
// operation name
CORBA::NVList_ptr args_;
// parameter list
CORBA::NamedValue_ptr result_;
// result of the operation
CORBA::Flags flags_;
// invocation flags
CORBA::Environment env_;
// holds exceptions
CORBA::ExceptionList exceptions_;
// list of exceptions raised by the operation
CORBA::ULong refcount_;
// reference counting
ACE_SYNCH_MUTEX refcount_lock_;
// protect the reference count
};
typedef CORBA_Request* CORBA_Request_ptr;
class TAO_Export CORBA_Request_var
{
// = TITLE
// The T_var class for Request
//
// = DESCRIPTION
// As any other pseudo object Request must have a T_var class,
// the interface an semantics are specified in the CORBA spec.
//
// = NOTE
// We use CORBA_Request_ptr as the _ptr type instead of
// CORBA::Request_ptr, this is an attempt to reduced the cyclic
// dependencies in TAO.
//
public:
CORBA_Request_var (void);
CORBA_Request_var (CORBA_Request_ptr);
CORBA_Request_var (const CORBA_Request_var &);
~CORBA_Request_var (void);
CORBA_Request_var &operator= (CORBA_Request_ptr);
CORBA_Request_var &operator= (const CORBA_Request_var &);
CORBA_Request_ptr operator-> (void) const;
operator const CORBA_Request_ptr &() const;
operator CORBA_Request_ptr &();
// in, inout, out, _retn
CORBA_Request_ptr in (void) const;
CORBA_Request_ptr &inout (void);
CORBA_Request_ptr &out (void);
CORBA_Request_ptr _retn (void);
CORBA_Request_ptr ptr (void) const;
private:
CORBA_Request_ptr ptr_;
};
class TAO_Export CORBA_Request_out
{
// = TITLE
// The T_out class for Request
//
// = DESCRIPTION
// As any other pseudo object Request must have a T_out class,
// the interface an semantics are specified in the CORBA spec.
//
// = NOTE
// We use CORBA_Request_ptr as the _ptr type instead of
// CORBA::Request_ptr, this is an attempt to reduced the cyclic
// dependencies in TAO.
//
public:
CORBA_Request_out (CORBA_Request_ptr &);
CORBA_Request_out (CORBA_Request_var &);
CORBA_Request_out (CORBA_Request_out &);
CORBA_Request_out &operator= (CORBA_Request_out &);
CORBA_Request_out &operator= (const CORBA_Request_var &);
CORBA_Request_out &operator= (CORBA_Request_ptr);
operator CORBA_Request_ptr &();
CORBA_Request_ptr &ptr (void);
CORBA_Request_ptr operator-> (void);
private:
CORBA_Request_ptr &ptr_;
};
#if defined (__ACE_INLINE__)
# include "tao/Request.i"
#endif /* __ACE_INLINE__ */
#endif /* TAO_REQUEST_H */
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