Hi,

On 26 Oct 2010, at 14:47, Fabrizio Perin wrote:

Hi all, i was looking at the model and i was wondering why the method annotationInstaces is defined into FAMIXEntity. I think that it should be defined into FAMIXSourcedEntity otherwise i can ask to a FAMIXAnnotationInstance which are its annotationInstances that is kind o weird because as far as i know you cannot annotate an annotation or can you do that?

This kind of things are always a problem with single inheritance. In this case, I cannot think of a case in which we can annotate other entities except sourced entities. So, it should indeed be fine to move the property down into FAMIXSourcedEntity.

Moreover in which sense annotationInstances is derived? I mean if i have an entity how can i calculate the annotaton instances without accessing the model directly?

derived means it can be derived from another piece of information. When you have a bi-directional association, derived most always means that it can be derived from the other end of the association. Typically, when we have a 1-to-n association, we mark the n end with derived. In this case FAMIXAnnotationInstance>>annotatedEntity is not derived, but FAMIXEntity>>annotationInstances is derived.

Cheers, Doru

Cheers,

Fabrizio

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