Hello Kina,
Am 23.06.2017 um 12:06 schrieb
Bojarczuk, Kinga:
Hello,
I'm working on this project on e-motions files so
basically there's a .behavior file which is linked to .gcs
which is linked to .ecore file and together they represent
a graph transformation system. So what I'm trying to do is
to delete EReference from .ecore file between the object
that has some subclasses and another object. (First rule
in my henshin file) This should find a match as it exists
in a server2.ecore file however for some reason it
doesn't.
To understand why the rule cannot be applied, it's crucial to
know that Henshin aims to ensure that output models of a
transformation are well-formed: in particular, it aims to ensure
that rule applications never leave behind "dangling edges". In
your example rule, since you do not specify the deletion of the
containment edge between the :EPackage and the :EReference, this
edge would be left behind as dangling, so Henshin won't apply
the rule.
To make the rule applicable, it should be sufficient to specify
the deletion of the aforementioned containment edge. (Another
option is to the set the "checkDangling" attribute in the rule
to "false", however, in this case, you may lose well-formedness
guarantees.)
When I run the code straight on the server2.ecore (by
starting with EPackage in my rule) file or server2.gcs (by
starting with MetamodelGD in my rule) file it works and
finds a match but when running on server3.behavior file
something suddenly prevents it from finding a match which
is really weird as .behavior file just provides a
reference to the other files so since it works when run
straight on them it should work on the the behavior file
as well.
I can't find the code you mention in these statements. The zip
file only contains the models and Henshin files.
Best regards,
Daniel
The Second rule shows the solution that we thought might
work as Links in .behavior file are linked to EReferences
so we thought this might prevent deleting EReferences but
it doesn't work either.
The Third rule shows something that works but is a rather
'unclean solution' as it only deletes all the edges and
doesn't actually delete the node.
So any idea why running my rule on .behavior file
suddenly prevents it from finding a match? It seems really
weird so I'd appreciate some help. I've included a zip
file with my project.
Thank you,
Kinga
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