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Is there a way to handle 'The object is not contained in a resource.' nicely from within ATL? [message #983915]

Wed, 14 November 2012 03:46

Andreas Brieg
Messages: 48
Registered: November 2012

Member

I have a refining transformation of the MoDisco Java model where I drop some if statements. When I run the transformation I get the error output:
Quote:

The object 'org.eclipse.gmt.modisco.java.emf.impl.SingleVariableAccessImpl(at)50f904b1
variable declaration = org.eclipse.gmt.modisco.java.emf.impl.SingleVariableDeclarationImpl(at)ca329ff (name: audit, proxy: false) (extraArrayDimensions: 0) (varargs: false)' is not contained in a resource.

This happens when the if statement

if(audit == null) {
    // other code here
}

contains a reference to the variable audit in its expression. But a variable declaration also contains a list of usageInVariableAccess that refers also to that expression of the if statement. So the variable access is a dangling reference after the if statement is dropped.

Is there a nice way to drop all such dangling references from within an ATL transformation?

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Re: Is there a way to handle 'The object is not contained in a resource.' nicely from within ATL? [message #983929 is a reply to message #983915]

Wed, 14 November 2012 04:00

Sylvain EVEILLARD
Messages: 484
Registered: July 2009

Senior Member

drop everything that isn't needed anymore

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Re: Is there a way to handle 'The object is not contained in a resource.' nicely from within ATL? [message #984234 is a reply to message #983929]

Wed, 14 November 2012 09:23

Andreas Brieg
Messages: 48
Registered: November 2012

Member

The problem with this is, that it produces a lot of boiler plate code. You have to have a rule for every type which may have dangling references.

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Re: Is there a way to handle 'The object is not contained in a resource.' nicely from within ATL? [message #984277 is a reply to message #984234]

Wed, 14 November 2012 10:02

Hugo Bruneliere
Messages: 467
Registered: July 2009

Senior Member

With the current version of the refining mode, only the contained elements are automatically deleted when the container is "dropped".
If required, simply referenced elements (that are contained elsewhere) have to be explicitly deleted in other rules or via their container.

Hugo

------------------------------------------
Hugo Bruneliere - R&D Engineer
AtlanMod research team (Inria, EMN & LINA)
Ecole des Mines de Nantes
Nantes - France
------------------------------------------

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Re: Is there a way to handle 'The object is not contained in a resource.' nicely from within ATL? [message #985163 is a reply to message #984277]

Thu, 15 November 2012 02:44

Andreas Brieg
Messages: 48
Registered: November 2012

Member

There already exists a bug for that problem. See https://bugs.eclipse.org/bugs/show_bug.cgi?id=332194

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