ClientRequestInterceptor_Adapter.h

Go to the documentation of this file.

// -*- C++ -*-

//=============================================================================
/**
 *  @file    ClientRequestInterceptor_Adapter.h
 *
 *  ClientRequestInterceptor_Adapter.h,v 1.13 2006/03/10 07:19:05 jtc Exp
 *
 *   This file an adapter class to simplify the support of
 *   interceptors.
 *
 *  @author  Nanbor Wang <nanbor@cs.wustl.edu>
 *  @author  Ossama Othman <ossama@uci.edu>
 *  @author  Kirthika Parameswaran  <kirthika@cs.wustl.edu>
 */
//=============================================================================

#ifndef TAO_CLIENT_REQUEST_INTERCEPTOR_ADAPTER_H
#define TAO_CLIENT_REQUEST_INTERCEPTOR_ADAPTER_H

#include /**/ "ace/pre.h"

#include "tao/TAO_Export.h"

#if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */

#include "ace/CORBA_macros.h"
#include "tao/SystemException.h"
#include "tao/Invocation_Utils.h"

TAO_BEGIN_VERSIONED_NAMESPACE_DECL

class TAO_ClientRequestInfo;

namespace PortableInterceptor
{
  class ClientRequestInterceptor;
  typedef ClientRequestInterceptor *ClientRequestInterceptor_ptr;

  typedef CORBA::Short ReplyStatus;
}

namespace CORBA
{
  class PolicyList;
}

namespace TAO
{
  class Invocation_Base;

  /**
   * @class ClientRequestInterceptor_Adapter
   *
   * @brief A convenient helper class to invoke registered client request
   *        interceptors
   *
   * This class invokes all registered interceptors at interception
   * point, and enforces flow rules dictated by the Portable Interceptor
   * specification/chapter.
   */
  class TAO_Export ClientRequestInterceptor_Adapter
  {
  public:
    virtual ~ClientRequestInterceptor_Adapter (void);

    /**
     * @name PortableInterceptor Client Side Interception Points
     *
     * Each of these methods corresponds to a client side interception
     * point.  There are no "intermediate" interception points on the
     * client side, only "starting" and "ending" interception points.
     *
     */
    //@{
    /// This method implements one of the "starting" client side
    /// interception points.
    virtual void send_request (Invocation_Base &invocation
                               ACE_ENV_ARG_DECL) = 0;

    /// This method implements one of the "ending" client side
    /// interception point.
    virtual void receive_reply (Invocation_Base &invocation
                                ACE_ENV_ARG_DECL) = 0;

    /// This method implements one of the "ending" client side
    /// interception point.
    virtual void receive_exception (Invocation_Base &invocation
                                    ACE_ENV_ARG_DECL) = 0;

    /// This method implements one of the "ending" client side
    /// interception point.
    virtual void receive_other (Invocation_Base &invocation
                                ACE_ENV_ARG_DECL) = 0;

    /// Register an interceptor.
    virtual void add_interceptor (
      PortableInterceptor::ClientRequestInterceptor_ptr interceptor
      ACE_ENV_ARG_DECL) = 0;

    /// Register an interceptor with policies.
    virtual void add_interceptor (
      PortableInterceptor::ClientRequestInterceptor_ptr interceptor,
      const CORBA::PolicyList& policies
      ACE_ENV_ARG_DECL) = 0;

    virtual void destroy_interceptors (ACE_ENV_SINGLE_ARG_DECL) = 0;

    /// Convert TAO Invocation status to a PI status
    virtual PortableInterceptor::ReplyStatus reply_status (
      TAO::Invocation_Base const &invocation_base) = 0;
  };

}

TAO_END_VERSIONED_NAMESPACE_DECL

#include /**/ "ace/post.h"

#endif /* TAO_CLIENT_REQUEST_INTERCEPTOR_ADAPTER_H */

---