MutableConfiguration interface

[Leo Sutic]

All,

I've done some experimentation with persisting a component's
configuration.
First, I started like this:

    interface Persistable {
        Configuration getConfiguration ();
    }

but then I came upon the little snag that the container may want to add
more
configuration information to the Configuration before it is stored. So I
did this:

    interface Persistable {
        DefaultConfiguration getConfiguration ();
    }

Then this:

    interface Persistable {
        void getConfiguration (DefaultConfiguration config);
    }

which allowed the component to fill in its attributes etc.

But that's quite ugly.

So I'd like to have an interface - MutableConfiguration that will
extend Configuration, but add the mutators from DefaultConfiguration -
setAttribute, addChild, etc. DefaultConfiguration would then implement
this interface.

What do you think?

/LS


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