I am currently using Magic Systems of Systems Architect 2021x R2. I am developing a plugin that automates applying a three-way merge. After applying a three-way server merge through the com.nomagic.magicdraw.merge.MergeUtil.getDifference method and iterating over the accepted com.nomagic.magicdraw.merge.Change objects, I'd like to print a summary of the com.nomagic.magicdraw.diff.Modification difference objects for the user.

In the case of a com.nomagic.magicdraw.diff.ElementModification object, I can call getChangedPropertyName to get a String representing the changed property name. I can also get the com.nomagic.magicdraw.diff.ModificationInfo object. If the ModificationInfo is a com.nomagic.magicdraw.diff.ValueModificationInfo, I can call getValue to get the CHANGED value. I do not see an equivalent method to get the ORIGINAL value.

In the case of a com.nomagic.magicdraw.diff.TagValueModification object, I can also get its ModificationInfo object which will always seem to be com.nomagic.magicdraw.diff.ValueModificationInfo. I can call getValue to get the CHANGED value, but I do not see an equivalent method to get the ORIGINAL value.

I am aware of the VTL *.docx difference reports in \\data\\defaults\\data\\merge reports, and see com.nomagic.magicdraw.diff.report.PropertyReportInfo objects, which have methods getAncestor, getSource, and getTarget. I do not know if these objects (PropertyReportInfo, ElementReportInfo, DiagramReportInfo) can be set or obtained by a plugin? Otherwise, these methods seem to be what I want.

To summarize: for each accepted changed in a three way merge initiated by a custom plugin, my goal is to summarize the change's difference for Modifications by printing the difference property name, and the value of that property in each of the merge projects (source, target, ancestor). I can get the property name and the CHANGED value. Are there suggestions on how to get the ORIGINAL values, such as done by the VTL *docx difference reports?