Description Christian Damus 2016-06-20 19:05:08 EDT

The RSA Model Import "extra" component provides an extensibility mechanism by which applications can register additional QVTo transformations to be run before and/or after the main import sequence.

For applications such as Papyrus-RT (bug 462323), it is sometimes necessary for "after" transformations to make decisions when modifying the transformation results based on properties of the source model elements from which those results are mapped.  For semantic model elements, this is not usually difficult because the semantic model is largely in-out (modified in situ by the transformation).  However, for diagrams, it is more difficult because new diagrams are generated in the Papyrus model and the original diagrams are detached from the semantic content.

What is needed is access to the mapping traces produced by QVTo to obtain the reverse traceability from outputs to the inputs that generated them.