Hi there,

I have a use case where attributes not only have a value but an additional status field with an enum and maybe even more properties (for example two values and the status determines which value is the actual one).

Of course, my custom attribute would require to serialize all this information to XML.

It's a little odd usecase, but I was interested if there is some extension mechanism in EMF to achieve that.

I.e. for classes I could add a different Implementation of EObjectImpl in the "Root Extends Class" field. However, this is only a single setting for the whole model and cannot be done per class.

Still, for EAttributes there seems no option to change the implementation of the EAttribute, neither for the whole model nor for a single attribute.

Is an EDataType suitable for that? Does it make sense to create custom Data Types that are similar to Attributes with my additional behaviour/structure? Seems quite effort prone/brittle.

Cheers,
Hauke