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Recursive import? [message #469069]

Fri, 05 December 2008 01:46

No real name

Messages: 4
Registered: July 2009

Junior Member

Hi,

I have a big transformation and I want to split it into different files.
For example assume the following two transformation files:

// Start of contents of file test1.m2t
import "test2.m2t"

texttransformation test1 (in uml:"http://www.eclipse.org/uml2/2.1.0/UML") {
uml.Class::main () {
self.ownedAttribute->forEach(p:uml.Property) {
p.privateProperty()
}
}
uml.Type::mapType(){
stdout.println ("Mapping types");
}
}
// End of contents of file test1.m2t

// Start of contents of file test2.m2t
import "test1.m2t"
texttransformation test2 (in uml:"http://www.eclipse.org/uml2/2.1.0/UML") {
uml.Property::privateProperty () {
self.type.mapType()
}
}
// End of contents of file test2.m2t

This compiles fine, but if I execute the transformation on a model with
class attributes I get the following runtime exception:

## Starting transformation: "test1"
#Runtime Error in FunctionCallEvaluator:# Unknown function mapType for
type org.eclipse.uml2.uml.internal.impl.PrimitiveTypeImpl(line: 10)
( - Context:
test2::privateProperty::org.eclipse.mofscript.MOFScriptModel.impl.FunctionCallImpl@167e563
(line: 10, column: 4) (specification: ) (name: self.type.mapType,
isSuperCall: false)

It seems that the mapType operation cannot be found even though test1.m2t
has been imported in test2.m2t. Does the problem happen because there are
recursive imports in this example (i.e. test1.m2t imports test2.m2t and
test2.m2t imports test1.mt2)? If I put the contents of test2.m2t inside
test1.m2t the transformation works fine.

I was wondering if I am doing something wrong, or if there is any other
way to achieve what I am trying to do.

Many thanks,
Kyriakos

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Re: Recursive import? [message #469072 is a reply to message #469069]

Fri, 05 December 2008 13:32

Gøran K. Olsen

Messages: 184
Registered: July 2009

Senior Member

Hello Kyriakos,

Yes, currently this does not work.

I haven't had the use for it earlier, so never tested it. But I guess it
should be easy to fix for the next version (if it should be possible at all
doing that, have to think about that ;-)).

To solve it "as-is" I would suggest that you make a file (or more based on
e.g. context or functionality etc..) ".....Util.m2t" and gather all your
rules that are used by more than one ".m2t" unit in that file and imports it
to all the other. I also thinks this is a cleaner approach than
"cross-importing" specifications.

Best Regards,
G

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Re: Recursive import? [message #469075 is a reply to message #469072]

Fri, 05 December 2008 16:14

No real name

Messages: 4
Registered: July 2009

Junior Member

Hi Goran,

Thank you for the fast response. Yes, I should be able to split the
transformation so as to have a transformation file with the commonly used
rules to avoid recursive imports.

Regards,
Kyriakos

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