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Error during "Computing additional info" while using ECore EOperations [message #1044778]

Fri, 19 April 2013 10:32

Arnaud Dieumegard

Messages: 29
Registered: June 2010

Junior Member

Hi !

I have a MM and a meta class A with an EOperation op.
I would like to have op to return a list of lists of elements of type B.

So I've set the EType of op to "EEList<E> [org.eclipse.emf.common.util.EList]" and its upper bound to -1.

I've generated the EMF model and updated the generated code in AImpl.java:

public EList<EList<B>> op() {
	EList<EList<B>> lstBs = new BasicEList<EList<B>>();
	[...]
	return lstBs;
}

Now I want to write OCL constraints in an OCL file (using the completeOCL editor).
I'm able to write constraints like:

import '../model/MyModel.ecore'

context A
inv testConstraint: self.op()->isEmpty()

But if I want to use auto-completion to get informations on op, I get an error:

Quote:

Error
Fri Apr 19 12:18:35 CEST 2013
An internal error occurred during: "Computing additional info".

java.lang.StackOverflowError
at org.eclipse.ocl.examples.pivot.prettyprint.PrettyPrintTypeVisitor.appendParent(PrettyPrintTypeVisitor.java:171)
at org.eclipse.ocl.examples.pivot.prettyprint.PrettyPrintTypeVisitor.visitType(PrettyPrintTypeVisitor.java:359)
at org.eclipse.ocl.examples.pivot.util.AbstractExtendingVisitor.visitClass(AbstractExtendingVisitor.java:81)
at org.eclipse.ocl.examples.pivot.internal.impl.ClassImpl.accept(ClassImpl.java:663)
at org.eclipse.ocl.examples.pivot.util.AbstractVisitor.safeVisit(AbstractVisitor.java:64)
at org.eclipse.ocl.examples.pivot.prettyprint.PrettyPrintTypeVisitor.appendElement(PrettyPrintTypeVisitor.java:110)
at org.eclipse.ocl.examples.pivot.prettyprint.PrettyPrintTypeVisitor.appendTemplateBindings(PrettyPrintTypeVisitor.java:207)
at org.eclipse.ocl.examples.pivot.prettyprint.PrettyPrintTypeVisitor.visitType(PrettyPrintTypeVisitor.java:362)
at org.eclipse.ocl.examples.pivot.util.AbstractExtendingVisitor.visitClass(AbstractExtendingVisitor.java:81)
at org.eclipse.ocl.examples.pivot.util.AbstractExtendingVisitor.visitDataType(AbstractExtendingVisitor.java:117)
at org.eclipse.ocl.examples.pivot.internal.impl.DataTypeImpl.accept(DataTypeImpl.java:460)
at org.eclipse.ocl.examples.pivot.util.AbstractVisitor.safeVisit(AbstractVisitor.java:64)
at org.eclipse.ocl.examples.pivot.prettyprint.PrettyPrintTypeVisitor.appendParent(PrettyPrintTypeVisitor.java:189)
at org.eclipse.ocl.examples.pivot.prettyprint.PrettyPrintTypeVisitor.visitType(PrettyPrintTypeVisitor.java:359)
at org.eclipse.ocl.examples.pivot.util.AbstractExtendingVisitor.visitClass(AbstractExtendingVisitor.java:81)
at org.eclipse.ocl.examples.pivot.internal.impl.ClassImpl.accept(ClassImpl.java:663)
at org.eclipse.ocl.examples.pivot.util.AbstractVisitor.safeVisit(AbstractVisitor.java:64)
at org.eclipse.ocl.examples.pivot.prettyprint.PrettyPrintTypeVisitor.appendElement(PrettyPrintTypeVisitor.java:110)
at org.eclipse.ocl.examples.pivot.prettyprint.PrettyPrintTypeVisitor.appendTemplateBindings(PrettyPrintTypeVisitor.java:207)
at org.eclipse.ocl.examples.pivot.prettyprint.PrettyPrintTypeVisitor.visitType(PrettyPrintTypeVisitor.java:362)
at org.eclipse.ocl.examples.pivot.util.AbstractExtendingVisitor.visitClass(AbstractExtendingVisitor.java:81)
at org.eclipse.ocl.examples.pivot.util.AbstractExtendingVisitor.visitDataType(AbstractExtendingVisitor.java:117)

and so on...

Here are my system info:
Quote:

eclipse.buildId=M20120208-0800
java.version=1.6.0_27

Eclipse Modeling Tools
Version: Indigo Service Release 2
Build id: 20120216-1857

OCL Examples and Editors 3.1.2.v20120206-0606

So maybe I'm not doing the things right or there is a problem. I'm aware that I'm using a quite old version of eclipse but its better for us for the moment to avoid a migration.

If anyone have an idea ...

Thanks,
Arnaud

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Re: Error during "Computing additional info" while using ECore EOperations [message #1044790 is a reply to message #1044778]

Fri, 19 April 2013 10:54

Ed Willink

Messages: 7655
Registered: July 2009

Senior Member

Hi

Completion Assist and many other things have improved tremendously since
Indigo. The PrettyPrintVisitor has been refactored to be extensible for
QVT so the line numbers don't help very much. The loop bears a faint
resemblance to one I fixed recently, so hopefully the problem has gone away.

Newer releases of many modeling projects remain installable on Galileo,
provided you update the modeling projects, so you could use the latest
OCL milestone if you are prepared to install Xtext 2.4 as well.

Regards

Ed Willink

On 19/04/2013 11:32, Arnaud Dieumegard wrote:
> Hi !
>
> I have a MM and a meta class A with an EOperation op.
> I would like to have op to return a list of lists of elements of type B.
>
> So I've set the EType of op to "EEList<E>
> [org.eclipse.emf.common.util.EList]" and its upper bound to -1.
>
> I've generated the EMF model and updated the generated code in
> AImpl.java:
>
>
> public EList<EList<B>> op() {
> EList<EList<B>> lstBs = new BasicEList<EList<B>>();
> [...]
> return lstBs;
> }
>
>
> Now I want to write OCL constraints in an OCL file (using the
> completeOCL editor).
> I'm able to write constraints like:
>
>
> import '../model/MyModel.ecore'
>
> context A
> inv testConstraint: self.op()->isEmpty()
>
>
> But if I want to use auto-completion to get informations on op, I get
> an error:
>
> Quote:
>> Error
>> Fri Apr 19 12:18:35 CEST 2013
>> An internal error occurred during: "Computing additional info".
>>
>> java.lang.StackOverflowError
>> at
>> org.eclipse.ocl.examples.pivot.prettyprint.PrettyPrintTypeVisitor.appendParent(PrettyPrintTypeVisitor.java:171)
>> at
>> org.eclipse.ocl.examples.pivot.prettyprint.PrettyPrintTypeVisitor.visitType(PrettyPrintTypeVisitor.java:359)
>> at
>> org.eclipse.ocl.examples.pivot.util.AbstractExtendingVisitor.visitClass(AbstractExtendingVisitor.java:81)
>> at
>> org.eclipse.ocl.examples.pivot.internal.impl.ClassImpl.accept(ClassImpl.java:663)
>> at
>> org.eclipse.ocl.examples.pivot.util.AbstractVisitor.safeVisit(AbstractVisitor.java:64)
>> at
>> org.eclipse.ocl.examples.pivot.prettyprint.PrettyPrintTypeVisitor.appendElement(PrettyPrintTypeVisitor.java:110)
>> at
>> org.eclipse.ocl.examples.pivot.prettyprint.PrettyPrintTypeVisitor.appendTemplateBindings(PrettyPrintTypeVisitor.java:207)
>> at
>> org.eclipse.ocl.examples.pivot.prettyprint.PrettyPrintTypeVisitor.visitType(PrettyPrintTypeVisitor.java:362)
>> at
>> org.eclipse.ocl.examples.pivot.util.AbstractExtendingVisitor.visitClass(AbstractExtendingVisitor.java:81)
>> at
>> org.eclipse.ocl.examples.pivot.util.AbstractExtendingVisitor.visitDataType(AbstractExtendingVisitor.java:117)
>> at
>> org.eclipse.ocl.examples.pivot.internal.impl.DataTypeImpl.accept(DataTypeImpl.java:460)
>> at
>> org.eclipse.ocl.examples.pivot.util.AbstractVisitor.safeVisit(AbstractVisitor.java:64)
>> at
>> org.eclipse.ocl.examples.pivot.prettyprint.PrettyPrintTypeVisitor.appendParent(PrettyPrintTypeVisitor.java:189)
>> at
>> org.eclipse.ocl.examples.pivot.prettyprint.PrettyPrintTypeVisitor.visitType(PrettyPrintTypeVisitor.java:359)
>> at
>> org.eclipse.ocl.examples.pivot.util.AbstractExtendingVisitor.visitClass(AbstractExtendingVisitor.java:81)
>> at
>> org.eclipse.ocl.examples.pivot.internal.impl.ClassImpl.accept(ClassImpl.java:663)
>> at
>> org.eclipse.ocl.examples.pivot.util.AbstractVisitor.safeVisit(AbstractVisitor.java:64)
>> at
>> org.eclipse.ocl.examples.pivot.prettyprint.PrettyPrintTypeVisitor.appendElement(PrettyPrintTypeVisitor.java:110)
>> at
>> org.eclipse.ocl.examples.pivot.prettyprint.PrettyPrintTypeVisitor.appendTemplateBindings(PrettyPrintTypeVisitor.java:207)
>> at
>> org.eclipse.ocl.examples.pivot.prettyprint.PrettyPrintTypeVisitor.visitType(PrettyPrintTypeVisitor.java:362)
>> at
>> org.eclipse.ocl.examples.pivot.util.AbstractExtendingVisitor.visitClass(AbstractExtendingVisitor.java:81)
>> at
>> org.eclipse.ocl.examples.pivot.util.AbstractExtendingVisitor.visitDataType(AbstractExtendingVisitor.java:117)
>
> and so on...
>
> Here are my system info:
> Quote:
>> eclipse.buildId=M20120208-0800
>> java.version=1.6.0_27
>>
>> Eclipse Modeling Tools
>> Version: Indigo Service Release 2
>> Build id: 20120216-1857
>>
>> OCL Examples and Editors 3.1.2.v20120206-0606
>
>
> So maybe I'm not doing the things right or there is a problem. I'm
> aware that I'm using a quite old version of eclipse but its better for
> us for the moment to avoid a migration.
>
> If anyone have an idea ...
>
> Thanks,
> Arnaud

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