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[news.eclipse.modeling.gmt.amw] [ATL] Re: feature e does not exist on 
Hello,

this usually happens when the helper is not defined, but this is not your case..

Another question, which model handler are you using? AMW or EMF?


Regards,

Marcos.


ps.: I am copying this message to the ATL newsgroup, maybe somebody can help.


kornev wrote: 
Hi Marcos,
i am using the ATL launch configuration

structurebase ->MOF
IN->AMW
interbase ->MOF
advice ->MOF

structurebase ->structureBase.ecore
interbase ->interBase.ecore
advice ->interaction.ecore
MOF ->#EMF
IN ->test.ecore
AMW ->w_model.ecore

so, structurebase, interbase and advice are metamodels that conform to Ecore

best regards,
Yuri
Marcos Didonet Del Fabro schrieb:
Hi, how are you executing the transformation? Using the AMW main plug-in or using the ATL launch configuration?


Marcos.

kornev wrote: 
Hi,

i tried to define some transformation rules with Atl and was stumbled on the following:
(exerpt)
module CPMMWeave;
create OUT : MOF from IN : AMW, interbase: MOF, structurebase: MOF, advice : MOF;

helper context MOF!EModelElement def: isStBase : Boolean = MOF!EModelElement.allInstancesFrom ('structurebase')-> exists(e | e = self );

rule CopyStClass {
    from
        be : MOF!EClass (be.isStBase)
    to
        out :  MOF!EClass (
            name <- be.name,
        )
}
if i run this littel fragment i get
****** BEGIN Stack Trace
    message: feature isStBase does not exist on interbase!EClass
A.main() : ??#32 null
    local variables = {self=CPMMWeave : ASMModule}
    local stack = []
A.__matcher__() : ??#1 null
    local variables = {self=CPMMWeave : ASMModule}
    local stack = []
A.__matchCopyBaseInteractionClass() : ??#31 23:34-23:45
    local variables = {be=interbase!EClass, self=CPMMWeave : ASMModule}
    local stack = []
****** END Stack Trace

has someone any idea why this is happing,
i run other examples found on the homepage in works fine,
but here i do not understand, why Atl does not recognize that interbase conforms to the MOF(Ecore) model and cannot apply isStBase rule?