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// This may look like C, but it's really -*- C++ -*-
// $Id$
// ============================================================================
//
// = LIBRARY
// TAO
//
// = FILENAME
// LocalObject.h
//
// = DESCRIPTION
// Header file for CORBA's base "LocalObject" type.
//
// A "LocalObject" is an entity that can be the target of an local
// invocation. See the CORBA Component Model specification for details.
//
// = AUTHOR
// Portions Copyright 1997 by Washington University
//
// ============================================================================
#ifndef TAO_CORBA_LOCALOBJECT_H
#define TAO_CORBA_LOCALOBJECT_H
#include "ace/pre.h"
#include "tao/corbafwd.h"
#include "tao/Object.h"
#if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */
class TAO_Export CORBA::LocalObject : public virtual CORBA::Object
{
// @@ NW: It is not clear whether minimum CORBA should support
// LocalObject or not. I think it should.
public:
virtual ~LocalObject (void);
// destructor
static CORBA::LocalObject_ptr _duplicate (CORBA::LocalObject_ptr obj);
// increment the ref count
static CORBA::LocalObject_ptr _nil (void);
// return a NUL object
static CORBA::LocalObject_ptr _narrow (CORBA::Object_ptr obj,
CORBA_Environment &ACE_TRY_ENV =
TAO_default_environment ());
// @@ Narrowing a CORBA::LocalObject to a CORBA::Object is broken
// right now. The solution seems to be making CORBA::Object an
// abstract base class and create a CORBA::RemoteObject for regular
// object. Or, even easier, add a <is_local> member into
// CORBA::Object. I'll take the easier route for now.
static CORBA::LocalObject_ptr _unchecked_narrow (CORBA::Object_ptr obj,
CORBA_Environment &ACE_TRY_ENV =
TAO_default_environment ());
// no-op it is just here to simplify some templates.
virtual CORBA::Boolean _is_a (const CORBA::Char *logical_type_id,
CORBA_Environment &ACE_TRY_ENV =
TAO_default_environment ());
// Determine if we are of the type specified by the
// "logical_type_id". The CCM spec says this operation _may_ throw
// NO_IMPLEMENT exception. Since we need it in _narrow, I'll keep
// this function around.
#if (TAO_HAS_MINIMUM_CORBA == 0)
virtual CORBA::Boolean _non_existent (CORBA_Environment &ACE_TRY_ENV =
TAO_default_environment ());
// Always returns false.
virtual CORBA::ImplementationDef_ptr
_get_implementation (CORBA_Environment &ACE_TRY_ENV =
TAO_default_environment ());
// throws NO_IMPLEMENT.
virtual CORBA::InterfaceDef_ptr _get_interface (CORBA_Environment &ACE_TRY_ENV =
TAO_default_environment ());
// throws NO_IMPLEMENT.
virtual void _create_request (CORBA::Context_ptr ctx,
const CORBA::Char *operation,
CORBA::NVList_ptr arg_list,
CORBA::NamedValue_ptr result,
CORBA::Request_ptr &request,
CORBA::Flags req_flags,
CORBA_Environment &ACE_TRY_ENV =
TAO_default_environment ());
// throws NO_IMPLEMENT.
virtual void _create_request (CORBA::Context_ptr ctx,
const CORBA::Char *operation,
CORBA::NVList_ptr arg_list,
CORBA::NamedValue_ptr result,
CORBA::ExceptionList_ptr exclist,
CORBA::ContextList_ptr ctxtlist,
CORBA::Request_ptr &request,
CORBA::Flags req_flags,
CORBA_Environment &ACE_TRY_ENV =
TAO_default_environment ());
// throws NO_IMPLEMENT.
virtual CORBA::Request_ptr _request (const CORBA::Char *operation,
CORBA_Environment &ACE_TRY_ENV =
TAO_default_environment ());
// throws NO_IMPLEMENT.
#endif /* TAO_HAS_MINIMUM_CORBA */
#if (TAO_HAS_CORBA_MESSAGING == 1)
CORBA::Policy_ptr _get_policy (
CORBA::PolicyType type,
CORBA::Environment &ACE_TRY_ENV =
TAO_default_environment ()
);
// throws NO_IMPLEMENT.
CORBA::Policy_ptr _get_client_policy (
CORBA::PolicyType type,
CORBA::Environment &ACE_TRY_ENV =
TAO_default_environment ()
);
// throws NO_IMPLEMENT.
CORBA::Object_ptr _set_policy_overrides (
const CORBA::PolicyList & policies,
CORBA::SetOverrideType set_add,
CORBA::Environment &ACE_TRY_ENV =
TAO_default_environment ()
);
// throws NO_IMPLEMENT.
CORBA::PolicyList * _get_policy_overrides (
const CORBA::PolicyTypeSeq & types,
CORBA::Environment &ACE_TRY_ENV =
TAO_default_environment ()
);
// throws NO_IMPLEMENT.
CORBA::Boolean _validate_connection (
CORBA::PolicyList_out inconsistent_policies,
CORBA::Environment &ACE_TRY_ENV =
TAO_default_environment ()
);
// throws NO_IMPLEMENT.
#endif /* TAO_HAS_CORBA_MESSAGING == 1 */
virtual CORBA::ULong _hash (CORBA::ULong maximum,
CORBA_Environment &ACE_TRY_ENV =
TAO_default_environment ());
// Return a (potentially non-unique) hash value for this object.
// This method relies on the representation of the object
// reference's private state. Since that changes easily (when
// different ORB protocols are in use) there is no default
// implementation.
virtual CORBA::Boolean _is_equivalent (CORBA::Object_ptr other_obj,
CORBA_Environment &ACE_TRY_ENV =
TAO_default_environment ())
ACE_THROW_SPEC (());
// Try to determine if this object is the same as <other_obj>. This
// method relies on the representation of the object reference's
// private state. Since that changes easily (when different ORB
// protocols are in use) there is no default implementation.
// = Reference count managment.
virtual void _add_ref (void);
// Increment the reference count.
virtual void _remove_ref (void);
// Decrement the reference count.
// = TAO extensions
virtual TAO_ObjectKey *_key (CORBA_Environment &ACE_TRY_ENV =
TAO_default_environment ());
// throws NO_IMPLEMENT.
#if 0
virtual const TAO_ObjectKey &_object_key (void);
// Return a reference to the object key of profile in-use.
// If there's no in-use profile, then the program will
// probably crash. This method does not create a new copy.
virtual void * _tao_QueryInterface (ptr_arith_t type);
// Downcasting this object pointer to some other derived class.
// This QueryInterface stuff only work for local object.
#endif /* 0 */
#if !defined(__GNUC__) || __GNUC__ > 2 || __GNUC_MINOR__ >= 8
typedef CORBA::LocalObject_ptr _ptr_type;
typedef CORBA::LocalObject_var _var_type;
#endif /* __GNUC__ */
// Useful for template programming.
protected:
LocalObject ();
// Default constructor. Make it protected to prevent instantiation
// of this class.
private:
// = Unimplemented methods
// constructor
LocalObject (const CORBA_Object &);
LocalObject &operator = (const CORBA_Object &);
};
class TAO_Export CORBA::LocalObject_var
{
public:
LocalObject_var (void); // default constructor
LocalObject_var (CORBA::LocalObject_ptr);
LocalObject_var (const CORBA::LocalObject_var &); // copy constructor
~LocalObject_var (void); // destructor
LocalObject_var &operator= (CORBA::LocalObject_ptr);
LocalObject_var &operator= (const CORBA::LocalObject_var &);
CORBA::LocalObject_ptr operator-> (void) const;
operator const CORBA::LocalObject_ptr &() const;
operator CORBA::LocalObject_ptr &();
// in, inout, out, _retn
CORBA::LocalObject_ptr in (void) const;
CORBA::LocalObject_ptr &inout (void);
CORBA::LocalObject_ptr &out (void);
CORBA::LocalObject_ptr _retn (void);
CORBA::LocalObject_ptr ptr (void) const;
private:
CORBA::LocalObject_ptr ptr_;
};
class TAO_Export CORBA::LocalObject_out
{
public:
LocalObject_out (CORBA::LocalObject_ptr &);
LocalObject_out (CORBA::LocalObject_var &);
LocalObject_out (const CORBA::LocalObject_out &);
LocalObject_out &operator= (const CORBA::LocalObject_out &);
LocalObject_out &operator= (const CORBA::LocalObject_var &);
LocalObject_out &operator= (CORBA::LocalObject_ptr);
operator CORBA::LocalObject_ptr &();
CORBA::LocalObject_ptr &ptr (void);
CORBA::LocalObject_ptr operator-> (void);
private:
CORBA::LocalObject_ptr &ptr_;
};
#if defined (__ACE_INLINE__)
# include "tao/LocalObject.i"
#endif /* __ACE_INLINE__ */
#include "ace/post.h"
#endif /* TAO_CORBA_LOCALOBJECT_H */
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