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Home » Archived » M2M (model-to-model transformation) » [ATL] Processing GMF
[ATL] Processing GMF [message #80540] Thu, 01 May 2008 14:20 Go to next message
Eclipse UserFriend
Originally posted by: bures.dsrg.mff.cuni.cz

This is a multi-part message in MIME format.
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Content-Type: text/plain; charset=UTF-8; format=flowed
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Hello,

I've created an ATL module that should create a copy of GMF diagram file (meta-model URI: http://www.eclipse.org/gmf/runtime/1.0.1/notation). The module is attached.

It compiles fine, however when I try to run it on a GMF diagram file, I get the following error:

SEVERE: ****** BEGIN Stack Trace
SEVERE: message: trying to register several rules as default for element inM!<unnamed>: 'R_FillStyle' and 'R_LineStyle'
SEVERE: A.main() : ??#22 null
SEVERE: local variables = {self=ATLCopier_notation : ASMModule}
SEVERE: local stack = []
SEVERE: A.__matcher__() : ??#3 null
SEVERE: local variables = {self=ATLCopier_notation : ASMModule}
SEVERE: local stack = []
SEVERE: A.__matchR_LineStyle() : ??#36 null
SEVERE: local variables = {s=inM!<unnamed>, self=ATLCopier_notation : ASMModule}
SEVERE: local stack = []
SEVERE: NativeOperation public static void org.eclipse.m2m.atl.engine.vm.nativelib.ASMTransientLinkSet. addLink(org.eclipse.m2m.atl.engine.vm.StackFrame,org.eclipse .m2m.atl.engine.vm.nativelib.ASMTransientLinkSet,org.eclipse .m2m.atl.engine.vm.nativelib.ASMTransientLink)
SEVERE: args = [TransientLinkSet {TransientLink {rule = 'R_FillStyle', sourceElements = {s = inM!<unnamed>}, targetElements = {t = outM!<unnamed>}, variables = {}}, TransientLink {rule = 'R_FillStyle', sourceElements = {s = inM!<unnamed>}, targetElements = {t = outM!<unnamed>}, variables = {}}, TransientLink {rule = 'R_FillStyle', sourceElements = {s = inM!<unnamed>}, targetElements = {t = outM!<unnamed>}, variables = {}}, TransientLink {rule = 'R_FillStyle', sourceElements = {s = inM!<unnamed>}, targetElements = {t = outM!<unnamed>}, variables = {}}, TransientLink {rule = 'R_FillStyle', sourceElements = {s = inM!<unnamed>}, targetElements = {t = outM!<unnamed>}, variables = {}}, TransientLink {rule = 'R_FillStyle', sourceElements = {s = inM!<unnamed>}, targetElements = {t = outM!<unnamed>}, variables = {}}}, TransientLink {rule = 'R_LineStyle', sourceElements = {s = inM!<unnamed>}, targetElements = {t = outM!<unnamed>}, variables = {}}]
SEVERE: ****** END Stack Trace
INFO: Execution terminated due to error (see launch configuration to allow continuation after errors).
.....
.....
.....


In the end, it looks like the problem lies in having these two rules in the transformation. Actually, the error persists until I have more than one rule for styles.


rule R_FillStyle {
from s : MM!FillStyle
to t : MM!FillStyle (
fillColor <- s.fillColor
)
}

rule R_LineStyle {
from s : MM!LineStyle
to t : MM!LineStyle (
lineColor <- s.lineColor
)
}

Do you have any idea, what it could mean and how to cope with that?

Thank you,
Tomas

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Re: [ATL] Processing GMF [message #80570 is a reply to message #80540] Thu, 01 May 2008 20:01 Go to previous messageGo to next message
Eclipse UserFriend
Originally posted by: goetz.botterweck.lero.ie

Tomas Bures wrote:
>
> SEVERE: ****** BEGIN Stack Trace
> SEVERE: message: trying to register several rules as default for
> element inM!<unnamed>: 'R_FillStyle' and 'R_LineStyle'

Could it be that the problem is caused by a specialization relationship
between the two classes?

In that case a rule that matches the more generic class also matches the
specialized class.

If that is undesired you should add an additional condition with
oclIsTypeOf() to the more general rule.

HTH,
Goetz
Re: [ATL] Processing GMF [message #80584 is a reply to message #80570] Thu, 01 May 2008 20:04 Go to previous message
Eclipse UserFriend
Originally posted by: bures.dsrg.mff.cuni.cz

Thank you. That could be. In GMF, there is an abstract class Style and the specialized styles (e.g. LineStyle, FillStyle, FontStyle, etc.) inherit from it.

Tomas

Goetz Botterweck wrote:
> Tomas Bures wrote:
>>
>> SEVERE: ****** BEGIN Stack Trace
>> SEVERE: message: trying to register several rules as default for
>> element inM!<unnamed>: 'R_FillStyle' and 'R_LineStyle'
>
> Could it be that the problem is caused by a specialization relationship
> between the two classes?
>
> In that case a rule that matches the more generic class also matches the
> specialized class.
>
> If that is undesired you should add an additional condition with
> oclIsTypeOf() to the more general rule.
>
> HTH,
> Goetz
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