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ATL Transformation Order Problem [message #1040621]

Sat, 13 April 2013 22:45

Eclipse User

Dears,

I have a problem in an ATL program.
I need the input items to be transformed in the same order they appear in the input file. But they are transformed in the order of the firing of rules.

I used "ordered reference" in the input metamodel, but this doesn't work.

Any one have a clue?

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Re: ATL Transformation Order Problem [message #1048256 is a reply to message #1040621]

Wed, 24 April 2013 08:24

Ronan B

Messages: 273
Registered: July 2009

Senior Member

Hi,
Take a look at http://www.eclipse.org/forums/index.php/t/197319/. You cannot rely on the order of matched rules. However, this is rarely a problem if you write your ATL as your should.
Regards,
Ronan

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Re: ATL Transformation Order Problem [message #1057752 is a reply to message #1048256]

Wed, 08 May 2013 14:52

Eclipse User

Thanks a lot.

It worked as follows:

The order is going to be determined by the reference (in another model element) that will actually "contain" these -to be ordered- elements.

For instance:

rule XXXtoYYY {
from
x: MM!XXX
to
y: NN!YYY (
Ys<- x.Xs->sortedBy(n | n.id)
)
}

then write the rules that convert each sub element X to Y.
Note: it worked with me without (->sortedBy(n | n.id))

Also check this Link:
http://www.eclipse.org/forums/index.php/mv/msg/474693/1039633/#msg_1039633

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