TAO/tao/Codeset_Manager_Factory_Base.h

   1 // -*- C++ -*-
   2
   3 //=============================================================================
   4 /*
   5  *  @file Codeset_Manager_Factory_Base.h
   6  *
   7  *  Interface for the TAO CodeSet Manager.
   8  *
   9  *  @author  Mahesh Vedantam <mahesh@ociweb.com>
  10  */
  11 //=============================================================================
  12
  13 #ifndef TAO_CODESET_MANAGER_FACTORY_BASE_H
  14 #define TAO_CODESET_MANAGER_FACTORY_BASE_H
  15
  16 #include /**/ "ace/pre.h"
  17
  18 #include /**/ "tao/TAO_Export.h"
  19
  20 #if !defined (ACE_LACKS_PRAGMA_ONCE)
  21 # pragma once
  22 #endif /* ACE_LACKS_PRAGMA_ONCE */
  23
  24 #include /**/ "tao/Versioned_Namespace.h"
  25
  26 #include "ace/Service_Object.h"
  27 #include "ace/Service_Config.h"
  28
  29 TAO_BEGIN_VERSIONED_NAMESPACE_DECL
  30
  31 class TAO_Codeset_Manager;
  32
  33 /**
  34  * @class TAO_Codeset_Manager_Factory_Base
  35  *
  36  * @brief Base class for creating instances of the codeset manager.
  37  *
  38  * The base also provides a default implementation which
  39  * instantiates nothing. This default impl is replaced by the actual
  40  * implementation if libTAO_Codeset is loaded.
  41  */
  42
  43 class TAO_Export TAO_Codeset_Manager_Factory_Base : public ACE_Service_Object
  44 {
  45 public:
  46   virtual ~TAO_Codeset_Manager_Factory_Base () = default;
  47
  48   /// Create makes a new instance of the codeset manager for every
  49   /// call. This allows multiple ORBs to have their own (or none).
  50   /// This default implementation returns a null pointer only.
  51   virtual TAO_Codeset_Manager *create();
  52
  53   /// Is_default is called by the ORB Core to determine if it needs
  54   /// to reload the factory with a dynamically linked libTAO_Codeset.
  55   /// Statically linked applications get derive implementation by
  56   /// including "tao/Codeset/Codeset.h" somewhere in their source code.
  57   virtual bool is_default () const;
  58
  59   /// Static initializer ensures the factory is loaded
  60   static int initialize ();
  61 };
  62
  63 static int
  64 TAO_Requires_Base_Codeset_Initializer =
  65   TAO_Codeset_Manager_Factory_Base::initialize ();
  66
  67 ACE_STATIC_SVC_DECLARE (TAO_Codeset_Manager_Factory_Base)
  68 ACE_FACTORY_DECLARE (TAO, TAO_Codeset_Manager_Factory_Base)
  69
  70 TAO_END_VERSIONED_NAMESPACE_DECL
  71
  72 #include /**/ "ace/post.h"
  73
  74 #endif /* TAO_CODESET_MANAGER_FACTORY_BASE_H */