pMessageFactory.h

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/****************************************************************************
 * Copyright (c) 2016 VT MAK
 * All rights reserved.
 ****************************************************************************/


#pragma once

#include <portal/pMessage.h>

namespace MAKVrExchange
{

   class DT_DLL_LIBPORTAL DtPortalMessageFactory
   {
   public:

      DtPortalMessageFactory();

      virtual ~DtPortalMessageFactory();

      DtPortalMessage* create( const void* message, unsigned int messageSize ) const;

      template <typename T_Message>
      void registerCreator( const T_Message& msg );

      typedef DtPortalMessage *(*ShmMessageCreator)();
      void registerCreator( const DtPortalMessageKind& kind, const ShmMessageCreator& creator );

   private:

      DtPortalMessageFactory( const DtPortalMessageFactory& );

      DtPortalMessageFactory& operator = ( const DtPortalMessageFactory& );

   protected:

      typedef std::map<DtPortalMessageKind,ShmMessageCreator> KindCreateFunctionMap;
      KindCreateFunctionMap myCreatorFunctionMap;

   };


   template <typename T_Message>
   inline void DtPortalMessageFactory::registerCreator( const T_Message& )
   {
      myCreatorFunctionMap[T_Message::theKind] = T_Message::create;
   }

   inline void DtPortalMessageFactory::registerCreator(
      const DtPortalMessageKind& kind, const ShmMessageCreator& creator )
   {
      myCreatorFunctionMap[kind] = creator;
   }

}