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authorWilliam R. Otte <wotte@dre.vanderbilt.edu>2006-07-24 15:50:11 +0000
committerWilliam R. Otte <wotte@dre.vanderbilt.edu>2006-07-24 15:50:11 +0000
commit6b846cf03c0bcbd8c276cb0af61a181e5f98eaae (patch)
treeda50d054f9c761c3f6a5923f6979e93306c56d68 /TAO/tao/Pluggable_Messaging_Utils.h
parent0e555b9150d38e3b3473ba325b56db2642e6352b (diff)
downloadATCD-6b846cf03c0bcbd8c276cb0af61a181e5f98eaae.tar.gz
Repo restructuring
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-// -*- C++ -*-
-
-//=============================================================================
-/**
- * @file Pluggable_Messaging_Utils.h
- *
- * $Id$
- *
- * Utility classes for the TAO pluggable messaging framework.
- *
- * @author Balachandran Natarajan <bala@cs.wustl.edu>
- */
-//=============================================================================
-
-
-#ifndef TAO_PLUGGABLE_MESSAGING_UTILS_H
-#define TAO_PLUGGABLE_MESSAGING_UTILS_H
-
-#include /**/ "ace/pre.h"
-
-#include "tao/IOP_IORC.h"
-
-#if !defined (ACE_LACKS_PRAGMA_ONCE)
-# pragma once
-#endif /* ACE_LACKS_PRAGMA_ONCE */
-
-TAO_BEGIN_VERSIONED_NAMESPACE_DECL
-
-class TAO_Transport;
-
-/**
- * @class TAO_Pluggable_Reply_Params_Base
- *
- * @brief TAO_Pluggable_Acceptor_Params
- *
- * This represents a set of data that would be assembled by the
- * acceptor to pass to the connector. This base class is used by
- * TAO_ServerRequest. The child class TAO_Pluggable_Reply_Params
- * is used on the client side, and contains an additional
- * TAO_InputCDR member, not needed on the server side.
- */
-class TAO_Export TAO_Pluggable_Reply_Params_Base
-{
-public:
- /// Constructor.
- TAO_Pluggable_Reply_Params_Base (void);
-
- /// The IOP service context list.
- IOP::ServiceContextList svc_ctx_;
-
- /// The request id for which the reply we (connector) has received.
- CORBA::ULong request_id_;
-
- // @@ Bala: this is (again) an GIOPism (to coin a word). Other
- // protocol may choose to send different *messages* instead.
- // @@ Carlos: I agree. Please see above.
- /// The reply status.
- CORBA::ULong reply_status_;
-
- /**
- * Since this class no longer contains an NVList, this is the
- * way to determine if the request was DSI, so we can use Carlos'
- * service context list no-deep-copy optimization.
- */
- CORBA::Boolean is_dsi_;
-
- /// Info required for DSI optimization that pads the outgoing
- /// CDR stream according to the alignment of the NVList.
- ptrdiff_t dsi_nvlist_align_;
-
- /**
- * Get and Set methods for the service context list that we dont
- * own. This is useful for cases where the application objects own
- * a service context list and would like to pass on their contents
- * without a copy.
- */
- IOP::ServiceContextList &service_context_notowned (void);
- void service_context_notowned (IOP::ServiceContextList *svc);
-
- /// A flag that indicates if there is any data is going to get
- /// marshalled in the reply
- CORBA::Boolean argument_flag_;
-
-protected:
- /// The service context list that we don't own.
- IOP::ServiceContextList *service_context_;
-};
-
-/**
- * @class TAO_Pluggable_Reply_Params
- *
- * @brief TAO_Pluggable_Connector_Params
- *
- */
-class TAO_Export TAO_Pluggable_Reply_Params
- : public TAO_Pluggable_Reply_Params_Base
-{
-public:
- /// Constructor.
- TAO_Pluggable_Reply_Params (TAO_Transport *t);
-
- /// The stream with the non-demarshaled reply. This stream will be
- /// passed up to the stubs to demarshal the parameter values.
- TAO_InputCDR *input_cdr_;
-
- TAO_Transport *transport_;
-};
-
-// @@ Bala: this is a GIOPism too, there is no such thing as locate
-// request in HTTP (the basis for SOAP and XIOP), i don't know about
-// HTTP-NG, but i wouldn't be surprised if it had. Furthermore, some
-// very influential people (Michi) is arguing against it in the OMG.
-//
-// @@Carlos: Yes, I also saw some of Michi's ideas. Even if OMG
-// decides to remove this, can I point that we may have to support that
-// for the existsing GIOP1.0,1.1 & GIOP 1.2. Above all, the enum type
-// contains things that I know of today. I can go ahead and add HTTP-NG
-// stuff. They all seem to be in Working Draft stage. So, I am just
-// keeping off. I dont want to add something for the kick of it :-)
-enum TAO_Pluggable_Header_Type
-{
- TAO_PLUGGABLE_MESSAGE_REQUEST_HEADER = 0,
- TAO_PLUGGABLE_MESSAGE_LOCATE_REQUEST_HEADER
-};
-
-
-/**
- * Provide an external interface for the users of this pluggable
- * messaging framework to denote existing message types. This has
- * an inspiration from GIOP. So if anybody wants to add more message
- * types you are welcome but please do not change the numbering
- * scheme as this would affect GIOP.
- *
- * @note
- * We may not need everything here. It would be good if we
- * have only the following messages TAO_PLUGGABLE_MESSAGE_REQUEST,
- * TAO_PLUGGABLE_MESSAGE_REPLY,
- * TAO_PLUGGABLE_MESSAGE_CLOSECONNECTION,
- * TAO_PLUGGABLE_MESSAGE_MESSAGE_ERROR. Changes will be made once
- * the rest of the stuff gets ready to roll
- */
-enum TAO_Pluggable_Message_Type
-{
- TAO_PLUGGABLE_MESSAGE_REQUEST = 0, // sent by client.
- TAO_PLUGGABLE_MESSAGE_REPLY = 1, // by server.
- TAO_PLUGGABLE_MESSAGE_CANCELREQUEST = 2, // by client.
- TAO_PLUGGABLE_MESSAGE_LOCATEREQUEST = 3, // by client.
- TAO_PLUGGABLE_MESSAGE_LOCATEREPLY = 4,
- TAO_PLUGGABLE_MESSAGE_CLOSECONNECTION = 5,
- TAO_PLUGGABLE_MESSAGE_MESSAGERROR = 6,
- TAO_PLUGGABLE_MESSAGE_FRAGMENT = 7
-};
-
-// @@ Bala: This is a hopeless GIOPism.
-// @@ Carlos: Agreed.
-
-/**
- * Provide an external interface for the users of this pluggable
- * messaging framework to denote existing Exception types. This has
- * an inspiration from GIOP. So if anybody wants to add more message
- * types you are welcome but please do not change the numbering
- * scheme as this would affect GIOP.
- */
-enum TAO_Pluggable_Message_Exception_Type
-{
- /// Request completed successfully
- TAO_PLUGGABLE_MESSAGE_NO_EXCEPTION = 0,
-
- /// Request terminated with user exception
- TAO_PLUGGABLE_MESSAGE_USER_EXCEPTION,
-
- /// Request terminated with system exception
- TAO_PLUGGABLE_MESSAGE_SYSTEM_EXCEPTION,
-
- /// Reply is a location forward type
- TAO_PLUGGABLE_MESSAGE_LOCATION_FORWARD,
-
- /// PLUGGABLE_MESSAGE 1.2, Reply is a location forward perm type..
- TAO_PLUGGABLE_MESSAGE_LOCATION_FORWARD_PERM,
-
- /// GIOP1.2,
- TAO_PLUGGABLE_MESSAGE_NEEDS_ADDRESSING_MODE
-};
-
-TAO_END_VERSIONED_NAMESPACE_DECL
-
-#if defined (__ACE_INLINE__)
-#include "tao/Pluggable_Messaging_Utils.i"
-#endif /* __ACE_INLINE__ */
-
-#include /**/ "ace/post.h"
-
-#endif /* TAO_PLUGGABLE_MESSAGING_UTILS_H */