Re: [henshin-dev] Problem with unit execution : Error executing unit 'do

[Christian Krause <henshin.ck@xxxxxxxxx>]

Hi Sebastien,

there is no easy answer to this question. The use case that you describe is called an exogenous transformation and, yes, you can do this with Henshin (using a trace model). If a unit application fails, it usually means that a rule was not applicable. This can have multiple reasons. In the moment, it is not easily possible to find out why a rule was not applicable, because the interpreter cannot distinguish between an incorrectly designed (but syntactically correct) rule and the "correct" one.

Regarding your 2nd question: if you install the nightly build, you will get validation in the graphical editor.

Hope this helps a little.

Cheers,

Christian

2015-01-19 17:58 GMT+01:00 Sébastien Pasero <sebastien.pasero@xxxxxx>:

Hi,

I just tried to execute a transformation with Henshin and here is what I got :
Error executing unit 'doTransfo'

I would like to have some advices on how to debug this :
 - Is there a way to get more info on what failed
 - Can I validate my henshin_diagram ?
 - Are there common mistakes people do when they start using Henshin ?

Here is what I would like to do :
I got two Ecore models : left.ecore and right.ecore.
I got one model instance my.left, which I would like to transform to another model instance my.right.
I hope Henshin is the right tool.

Regards,
Sebastien
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