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[ATL] rule for abstract metaclass [message #89756]

Wed, 03 September 2008 03:54

Eclipse User

Hello everybody, I have a new question. When I try to write a rule for an
abstract metaclass (example NamedElement):

rule namedElement{
from namedElement:SYSML!NamedElement
to nommeElement:UML!NamedElement (
name <- namedElement.name,
visibility <- namedElement.visibility,
clientDependency <- namedElement.clientDependency)
}

I get this error:
GRAVE: The class 'NamedElement' is not a valid classifier

Somebody can help me?

Thank you.

Monica.

Re: [ATL] rule for abstract metaclass [message #89785 is a reply to message #89756]

Wed, 03 September 2008 04:17

Eclipse User

Hello,

The problem is that you try to instantiate NamedElement which is an
abstract class, so it is not possible.

If the question is that you want to use inheritance in rules, you must
set the rules for abstract classes as abstract.

So you obtain something like:

abstract rule namedElement{....}

After that you must have a rule for each subclasses of the abstract
class and use:

rule rule4aSubClass extends namedElement{...} (with namedElement the
name of the rule)

Best regards.

Guillaume

PS: do not forget to use atl compiler 2006 to use rules inheritance
(-- @atlcompiler atl2006)

Monica Clement a écrit :
> Hello everybody, I have a new question. When I try to write a rule for
> an abstract metaclass (example NamedElement):
>
> rule namedElement{
> from namedElement:SYSML!NamedElement
> to nommeElement:UML!NamedElement ( name <-
> namedElement.name, visibility <-
> namedElement.visibility,
> clientDependency <- namedElement.clientDependency)
> }
>
> I get this error: GRAVE: The class 'NamedElement' is not a valid classifier
>
> Somebody can help me?
>
> Thank you.
>
> Monica.
>

Re: [ATL] rule for abstract metaclass [message #89881 is a reply to message #89756]

Wed, 03 September 2008 16:57

Eclipse User

Hi Monica,

You should declare the rule as abstract:
abstract rule namedElement{

Regards,

Alfons

"Monica Clement" <monica.clement@gmail.com> schreef in bericht
news:22a49769ec9ea5dc048fd516804eda99$1@www.eclipse.org...
> Hello everybody, I have a new question. When I try to write a rule for an
> abstract metaclass (example NamedElement):
>
> rule namedElement{
> from namedElement:SYSML!NamedElement
> to nommeElement:UML!NamedElement ( name <- namedElement.name,
> visibility <- namedElement.visibility,
> clientDependency <- namedElement.clientDependency)
> }
>
> I get this error: GRAVE: The class 'NamedElement' is not a valid
> classifier
>
> Somebody can help me?
>
> Thank you.
>
> Monica.
>

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