[mdt-papyrus.dev] Xtext editors for OCL

[Ed Willink <ed@xxxxxxxxxxxxx>]

Hi

MDT/OCL 3.0.0M7 introduces four Xtext editors for OCL. For Helios these 
are 'examples'. For ?Indigo? they should mature to non-examples.

The EssentialOCL editor supports editing a single OCL expression and so 
may be useful within Papyrus pop-ups. The API to support resolution of 
references from expressions to the outer model has not been looked at., 
so if you can provide a Papyrus example that pops-up the editor on a 
model, I can help resolve the semantic API. If use of Xtext in pop-ups 
is difficult, no doubt the itemis team will help.

The CompleteOCL editor for OCL documents, and the OCLinEcore editor may 
be worth integrating as part of a larger environment.

[The fourth editor supports definition of the OCL 'standard' library.]

Behind the scenes the editors use a modeling-representation agnostic 
pivot model, so the OCLinEcore editor will acquire an OCLinUML sibling 
that adds richer class structure such as Associations to a textual 
representation of a model that will endeavour to use a formal syntax 
resembling the informal presentation characteristic of OMG specifications.

    Regards

        Ed Willink