Shallow\Deep copy

ManicQin <>
Tue, 6 Oct 2009 22:14:53 CST
Hi, I'll do my best to explain my problem...
I have an data type that is wrapping a vector of pointers, currently I
have no control of the type that the vector holds and I need to be as
generic as I can (it's a part of a frame work).
naturally my vector is templated by the client.

I tried to think of a way to deep copy the vector into another -

without<- adding Clone function and such to the objects and I couldnt

think of one, I would be happy if anyone knows of a way...

Because I couldnt find a way to work without the Clone() AND I cant
force my clients to implement IClonable interface than I decided to
check If the object is descendant of IClonable and if it is than I
deep copy the object if not than I shallow copy the object, it seems
something like this:

void CompositorBase<Interface>::CopyItems(CompositorBase<Interface>
const& compositor)
        for(CIterator iter = compositor.m_cData.begin();
            iter != compositor.m_cData.end();
            Interface* newItem = (*iter);
            IClonable* testForClonable = dynamic_cast<IClonable*>(newItem);
            if (testForClonable)
                IClonable* tmpClone = testForClonable->Clone();
                if (tmpClone)
                    newItem = dynamic_cast<Interface*>(tmpClone);


Now... I dont like this chunk of code, Can any one think of better way
under this restrictions?

thank you!

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