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// -*- C++ -*-
//=============================================================================
/**
* @file Adapter.h
*
* $Id$
*
* @author Carlos O'Ryan (coryan@uci.edu)
*/
//=============================================================================
#ifndef TAO_ADAPTER_H
#define TAO_ADAPTER_H
#include /**/ "ace/pre.h"
#include "ace/Service_Object.h"
#if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */
#include "tao/Exception.h"
#if defined(_MSC_VER)
#if (_MSC_VER >= 1200)
#pragma warning(push)
#endif /* _MSC_VER >= 1200 */
#pragma warning(disable:4250)
#endif /* _MSC_VER */
#include "tao/CORBA_methods.h"
#include "tao/Pseudo_VarOut_T.h"
namespace CORBA
{
typedef TAO_Pseudo_Var_T<Object> Object_var;
typedef TAO_Pseudo_Out_T<Object, Object_var> Object_out;
}
namespace TAO
{
class ObjectKey;
}
class TAO_ORB_Core;
class TAO_Stub;
class TAO_MProfile;
class TAO_ServerRequest;
class TAO_Export TAO_Adapter
{
public:
virtual ~TAO_Adapter (void);
/// Initialize the Adapter
virtual void open (ACE_ENV_SINGLE_ARG_DECL) = 0;
/// The ORB is shutting down, destroy any resources attached to this
/// adapter.
virtual void close (int wait_for_completion
ACE_ENV_ARG_DECL) = 0;
/// Check if the adapter can be closed in the current context, raise
/// an exception if not.
virtual void check_close (int wait_for_completion
ACE_ENV_ARG_DECL) = 0;
/**
* Return the priority assigned to this adapter.
* Adapters at higher priority are used first, the first adapter
* that matches a key is used to dispatch a request.
*/
virtual int priority (void) const = 0;
/// Return the status....
virtual int dispatch (TAO::ObjectKey &key,
TAO_ServerRequest &request,
CORBA::Object_out forward_to
ACE_ENV_ARG_DECL)
ACE_THROW_SPEC ((CORBA::SystemException)) = 0;
enum {
/// The operation was successfully dispatched, an exception may
/// have been raised, but that is a correct execution too.
DS_OK,
/// There was a problem in dispatching the operation.
DS_FAILED,
/// The key is not in the right format for this Adapter, try the
/// next one.
DS_MISMATCHED_KEY,
/// Forward the request to another object reference, this decouples
/// the ORB from the PortableServer::ForwardRequest exception
DS_FORWARD
};
/// Return the name, i.e. the object id used to resolve it in the
/// ORB.
virtual const char *name (void) const = 0;
/**
* Return the root of the Object Adapter.
* Each adapter defines its own IDL interface accessed through the
* method above.
*/
virtual CORBA::Object_ptr root (void) = 0;
/// Create a collocated object using the given profile and stub.
virtual CORBA::Object_ptr create_collocated_object (TAO_Stub *,
const TAO_MProfile &) = 0;
/// Initialize a collocated object using the given stub and object
/// pointer for lazily evaluated object references.
virtual CORBA::Long initialize_collocated_object (TAO_Stub *,
CORBA::Object_ptr) = 0;
};
// ****************************************************************
// @@ Move to its own file
class TAO_Export TAO_Adapter_Registry
{
public:
TAO_Adapter_Registry (TAO_ORB_Core *orb_core);
/// Close the
~TAO_Adapter_Registry (void);
/**
* Close each of of the Adapters and then cleanup the Registry.
* It is possible that an Adapter will reject a close() call if it
* is invoked in an innapropriate context (think shutting down the
* POA while performing an upcall).
*/
void close (int wait_for_completion
ACE_ENV_ARG_DECL)
ACE_THROW_SPEC (());
/**
* Verify if the close() call can be invoked in the current
* context for *all* adapters.
* Raise the right exception if not.
*/
void check_close (int wait_for_completion
ACE_ENV_ARG_DECL)
ACE_THROW_SPEC (());
/// Insert a new adapter into the registry.
void insert (TAO_Adapter *adapter
ACE_ENV_ARG_DECL);
/**
* Dispatch the request to all the adapters.
* It tries the adapters ordered by priority, stopping when the
* adapter returns a status different from DS_MISMATCHED_KEY
*/
void dispatch (TAO::ObjectKey &key,
TAO_ServerRequest &request,
CORBA::Object_out forward_to
ACE_ENV_ARG_DECL)
ACE_THROW_SPEC ((CORBA::SystemException));
/// Create a collocated object using the given profile and stub.
CORBA::Object_ptr create_collocated_object (TAO_Stub *,
const TAO_MProfile &);
/// Initialize a collocated object using the given stub and object
/// pointer for lazily evaluated object references.
CORBA::Long initialize_collocated_object (TAO_Stub *,
CORBA::Object_ptr o);
/// Fetch the adapter named @a name
TAO_Adapter *find_adapter (const char *name) const;
private:
/// The ORB Core
TAO_ORB_Core *orb_core_;
/// A simple array of adapters.
size_t adapters_capacity_;
size_t adapters_count_;
TAO_Adapter **adapters_;
};
// ****************************************************************
class TAO_Export TAO_Adapter_Factory : public ACE_Service_Object
{
public:
/// Destructor
virtual ~TAO_Adapter_Factory (void);
/// Create a new adapter
virtual TAO_Adapter *create (TAO_ORB_Core *orb_core) = 0;
};
#if defined (__ACE_INLINE__)
# include "Adapter.i"
#endif /* __ACE_INLINE__ */
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
#pragma warning(pop)
#endif /* _MSC_VER */
#include /**/ "ace/post.h"
#endif /* TAO_OBJECT_ADAPTER_H */
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