[mylyn-integrators] Help needed with Mylyn-API

[Marc <my.mailing.lists@xxxxxx>]

Hello everyone

I am new to this list and I hope somebody can help me with my problem, or  
at least enlighten me ;)

Here is what I am trying to accomplish:
At my current project I am advocating Mylyn to my collegues...I skip the  
details, you all know the benefits of Mylyn.

Anyway, we have one problem. Every four month we are branching the  
source-code and when this happens I am loosing my Context. Ok, the Context  
is still there, but no files can be opened because with the branching the  
projectname also changes and Mylyn uses the projectname to identify  
resources in its handleIdentifiers. For the record, we HAVE to change the  
projectname due to filter-tokens that are hard-coded and specific for each  
branch...yes its a legacy monolithic spagetti-code project ;)

Hence, I got the idea of writing a plugin which can migrate a Context to  
other projects. My plugin extracts all occuring projects from the  
handleIdentifiers and provides a dialog to map those to existing workspace  
projects. Afterwards the handleIdentifiers are replaced by the correct  
mapping.
*And here comes the problem: After saving the context, none of my changes  
are persisted!*
I realised that I am obviously using the API in an non-expected way and  
that a context only changes when an interaction with a resource occurs  
(using the bridges). But in my case there is no such interaction.

Another way I found was to register a ActivationListener and hook into the  
PRE_ACTIVATION-phase where I can set the handleIndentifier as well but I  
dont think this is a good approach and furthermore I have the problem that  
I need to activate a task which is bad when multiple contexts should be  
migrated.

The last idea I found was to process an InteractionEvent. But to do this I  
need to get the actual eclipse-resource (correct me if I am wrong), which  
I currently cannot get a hold on from the handleIdentifier. The downside  
here is as well that the context needs to be activated. The code I was  
trying to use looks like this:

ContextCorePlugin.getContextManager().processInteractionEvent(<element  
goes here>,
	InteractionEvent.Kind.PROPAGATION, InteractionEvent.ID_UNKNOWN, context);



Until now I've spent a lot of time investigating the API but I am not  
getting any further. In the beginning I tried not to use internal classes  
but as it looks now I cannot accomplish what I am trying by just using  
public API.
*So I am asking here to find some advice how to approach this. Can anyone  
help my in this case?*


best regards
Marc


P.S. I was thinking of publishing my result back to Mylyn but after my  
first idea didnt work the code doest look so nice right now ;) But I am  
quite sure that this feature would be useful to others as well.