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Home » Modeling » M2T (model-to-text transformation) » [Acceleo] No common supertype error(No common supertype compiler error on generated Java Service wrappers)
[Acceleo] No common supertype error [message #540304] Tue, 15 June 2010 15:09 Go to next message
Frank  is currently offline Frank Friend
Messages: 3
Registered: April 2010
Junior Member
I've tried to create a Java Service Wrapper (using the wizard), but I'm receiving some compile errors.

My Java Service is called UMLServices.
Here's the method that is causing an issue:
public boolean isMarked(Element element, String mark)
{
for (Stereotype stereotype : element.getAppliedStereotypes())
{
if (mark.equalsIgnoreCase(stereotype.getName()))
{
return true;
}
}
for (String keyword : element.getKeywords())
{
if (keyword.equalsIgnoreCase(mark))
{
return true;
}
}

return false;
}

The generated Acceleo mtl file looks like this:

[module umlservices('http://www.eclipse.org/uml2/2.1.0/UML')/]

[query public isMarked(arg0 : Element, arg1 : String) : Boolean
= invoke('com.pwc.us.mda.services.UMLServices', 'isMarked(org.eclipse.uml2.uml.Element, java.lang.String)', Sequence{arg0, arg1}) /]


It seems fine, but the compiler is showing an error:
Type mismatch. No common supertype: (Element), (String)

I've done some debugging and it seems to happen when my service method takes more than one parameter that do not have a common superclass. Why? How can I change my service method or query to get this to work?

Thanks,

Frank
Re: [Acceleo] No common supertype error [message #540506 is a reply to message #540304] Wed, 16 June 2010 12:34 Go to previous messageGo to next message
Frank  is currently offline Frank Friend
Messages: 3
Registered: April 2010
Junior Member
I found that this same code works in a pure Helios Modeling environment.

I get the compile error while in an RSA environment, with the same Acceleo 3.0.X build installed. Does anyone know what plug-in dependency might be causing this?

Re: [Acceleo] No common supertype error [message #540809 is a reply to message #540506] Thu, 17 June 2010 12:28 Go to previous message
Laurent Goubet is currently offline Laurent GoubetFriend
Messages: 1638
Registered: July 2009
Senior Member
This is a multi-part message in MIME format.
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Hi Frank,

Unfortunately, most type checking issues are pure OCL. The best answer I
can give you is : your RSA environment is based on Eclipse 3.4 or 3.5,
thus OCL 1.2 or 1.3. A good number of such issues were fixed with OCL
1.3, even more have been fixed with OCL 3.0 (available in Eclipse 3.6,
Helios).

I believe that what you get here was fixed with OCL 1.3, but I might be
mistaken. Either way, if you cannot upgrade your RSA environment, I
cannot propose any intelligent workaround for this.

Laurent Goubet
Obeo

Frank wrote:
> I found that this same code works in a pure Helios Modeling environment.
>
> I get the compile error while in an RSA environment, with the same
> Acceleo 3.0.X build installed. Does anyone know what plug-in dependency
> might be causing this?
>
>


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