Re: [m2m-dev] Quality Assessment of QVTO Model Transformations

[ed@xxxxxxxxxxxxxxxxxx]

Hu Phu

[Pending a more accurate response from the QVTo authors.]

I evolved the meta-models which appear in org.eclipse.qvt of the M2M/QVTd
project and in the M2M/QVTo project and which are endorsed by OMG as the
QVT 1.1 models. However the initial Borland development used slightly
different meta-models and I understand that the planned migration has not
yet happened.

The Borland variant of the QVTo AST is almost certainly available. I would
start be searching for some friendly looking Util facades and failing that
set a breakpoint in the OCL EvaluationVisitorImpl and trace back up the
stack to see where execution of a QVTo transformation gets its
instructions from.

    Regards

        Ed Willink

> Dear members of project modeling.m2m.qvt-oml,
>
> *May I ask you some questions about how to parse qvto files?*
>
> My name is Phu Nguyen. I am doing my Master thesis in Software Engineering
> &
> Technology group, at the Eindhoven University of Technology. My research
> topic is Quality Assessment of Model Transformations (by means of metrics,
> coverage, dependencies…)
>
> Our approach is aimed at assessing the internal quality of model
> transformations by extracting metrics from the model transformations
> directly. Actually, many metrics have been defined for measuring the
> quality
> of model transformations (created with ASF+SDF and ATL) by our reseach
> group. (*)
>
> We are also interested in enabling quality measurement of model
> transformations (M2M) created using *Operational QVT*. But, in order to
> enable quality measurement of QVTO model transformations, it is vital to
> parse the qvto files to get the Abstract Syntax Trees
>
> I have investigated the source code of org.eclipse.m2m.qvt.oml project. If
> I
> understand correctly, the qvto files to be parsed, can only be referred to
> in run-time of QVTO eclipse plugins. Is there another way to use the
> QVTOCompiler to parse the qvto files without plugins?
>
> For example, I would like to parse the file book2pub.qvto, I have written:
> *
> org.eclipse.emf.common.util.URI transformationURI =
> URI.createFileURI("/my.qvto.extractor/book2pub/book2pub.qvto");
>
> UnitProxy unit = URIUnitResolver.getUnit(transformationURI);
>
> QVTOCompiler compiler = CompilerUtils.createCompiler(unit.getResolver());
>
> QvtCompilerOptions options = new QvtCompilerOptions();
> options.setGenerateCompletionData(false);
>
> return new CompiledUnit[] { compiler.compile(unit, options, new
> BasicMonitor()) };*
>
> But certainly, it does not work because the UnitProxy object will be NULL.
> I
> have tried other ways but not successfully. Could you please give me some
> advices about how I can use the QVTOCompilerto parse the qvto files or any
> other ways possible?
>
> Hope to hear from you soon. Thank you very much!
>
>
> Best regards,
>
> Phu
>
> ---(*)
> M.F. van Amstel, C.F.J. Lange, M.G.J. van den Brand. Using Metrics for
> Assessing the Quality of ASF+SDF Model Transformations. In Theory and
> Practice of Model Transformations, Proceedings of the Second International
> Conference on Model Transformation (ICMT'09), volume 5563 of Lecture Notes
> in Computer Science, pages 239-248, Zürich, Switzerland, June 2009
>
> M.F. van Amstel and M.G.J. van den Brand, Quality Assessment of ATL Model
> Transformations using Metrics, Proceedings of the Second International
> Workshop on Model Transformation with ATL, Málaga, Spain, June 2010
>
> On Sun, Sep 5, 2010 at 6:00 AM, portal on behalf of emo
> <emo@xxxxxxxxxxx>wrote:
>
>> m2m-dev@xxxxxxxxxxx
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