Exposing Abstract Interface with luabind ?

Hello!,

I'm want to expose an abstract interface with Luabind.

    *//Interface*
    class IAbstract
    {
    public:
         virtual ~IAbstract() {}
         virtual void method1(void) = 0;
         virtual void method2(void) = 0;
    };

    *//Implementation A*
    class A : public IAbstract
    {
         virtual void method1(void)
         {
    /         //Do some stuff/
         }

         virtual void method2(void)
         {
    ///Do other stuff/
         }
    };

    *//Implementation B*
    class B : public IAbstract
    {
         virtual void method1(void)
         {
    ///Do some stuff*/
         }

         virtual void method2(void)
         {
    /  //Do other stuff*/
         }
    };

What's the best way to expose this IAbstract using luabind ( I'm not 
sure if I can expose abstract classes ) , in my code I have a 
manager/factory which returns a pointer to an /IAbstract , /under the 
hood it instantiates class A or B, and the idea is of course to only use 
IAbstract methods to interact with class A or B.

So to the question,

Is there a way to only expose the IAbstract (abstract class) so that in 
Lua I could do:

    -- Lua code
    abstract = manager:returnIAbstractReference()
    abstract:method1()
    abstract:method2()

Or I will have to expose /ImplementationA, ImplementationB ... etc /?

Thanks!
-- 
Nicolas Goles Domic
Founder & Lead Engineer
Gando Games <www.gandogames.com>

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