it_bus/reflect/nillable.h

#ifndef _IT_REFLECT_NILLABLE_H_
#define _IT_REFLECT_NILLABLE_H_

// @Copyright 2004 IONA Technologies, Plc. All Rights Reserved.
//
#include <it_bus/reflect/reflection.h>

namespace IT_Reflect
{
    class IT_AFC_API Nillable : public virtual IT_Reflect::Reflection
    {
      public:
        Nillable() throw(());

        virtual ~Nillable() throw(());

        virtual IT_Bus::Boolean
        get_is_nil() const throw((ReflectException)) = 0;

        virtual void
        set_is_nil() throw((ReflectException)) = 0;
        
        virtual const Reflection*
        get_value() const throw((ReflectException)) = 0;

        virtual Reflection*
        use_value() throw((ReflectException)) = 0;
        
      private:
        // private and unimplemented to prevent copying
        Nillable(const Nillable&);
        void operator=(const Nillable&);
    };
}


#endif  

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