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Home » Modeling » OCL » Re: Getting tha value of an enumeration attribute (eGet())
Re: Getting tha value of an enumeration attribute (eGet()) [message #57005] Wed, 28 May 2008 12:19 Go to next message
Eclipse User
Originally posted by: merks.ca.ibm.com

Jose,

This seems to be an OCL question so I've added that newsgroup to the
"to" list of the reply. You might want to show the OCL expression you used.

Or maybe it's a question more appropriate for the m2m newsgroup which
I've also added to the "to" list of the reply.

I don't see EMF on the stack trace at all, so I don't have a clue.


Jose E. Rivera wrote:
> Hi all,
>
> I'm using (EObject) eGet(EStructuralFeature) operation to get the
> value of Objects' attributes and references. In all cases it works
> properly, but I get an error when trying to get the value of an
> attribute that has a EEnumLiteral as value...Is it the correct way to
> to access to it?
>
> I'm working with ATL (ATLAS trasnformation language) instead of
> directly with Java code, but these operations are supported as well. I
> get the following error:
>
> GRAVE: ERROR: get unsupported on OclAny.
> java.lang.RuntimeException: ERROR: get unsupported on OclAny.
> at
> org.eclipse.m2m.atl.engine.vm.SimpleDebugger.error(SimpleDeb ugger.java:185)
>
> at
> org.eclipse.m2m.atl.engine.vm.StackFrame.printStackTrace(Sta ckFrame.java:85)
>
> at
> org.eclipse.m2m.atl.engine.vm.StackFrame.printStackTrace(Sta ckFrame.java:81)
>
> at
> org.eclipse.m2m.atl.engine.vm.nativelib.ASMOclAny.get(ASMOcl Any.java:140)
> at
> org.eclipse.m2m.atl.engine.vm.ASMOperation.realExec(ASMOpera tion.java:288)
>
> at
> org.eclipse.m2m.atl.engine.vm.ASMOperation.exec(ASMOperation .java:161)...
>
>
> Thanks in advance,
> Jose E. Rivera
Re: Getting tha value of an enumeration attribute (eGet()) [message #57032 is a reply to message #57005] Wed, 28 May 2008 12:40 Go to previous messageGo to next message
Eclipse User
Originally posted by: rivera.lcc.uma.es

Sorry,

I saw other questions regarding this operation in this newsgroup and I
though that was the proper one. I though that implemented operations for
the Ecore metamodel were handled here,

sorry again and thank you

Ed Merks escribió:
> Jose,
>
> This seems to be an OCL question so I've added that newsgroup to the
> "to" list of the reply. You might want to show the OCL expression you
> used.
>
> Or maybe it's a question more appropriate for the m2m newsgroup which
> I've also added to the "to" list of the reply.
>
> I don't see EMF on the stack trace at all, so I don't have a clue.
>
>
> Jose E. Rivera wrote:
>> Hi all,
>>
>> I'm using (EObject) eGet(EStructuralFeature) operation to get the
>> value of Objects' attributes and references. In all cases it works
>> properly, but I get an error when trying to get the value of an
>> attribute that has a EEnumLiteral as value...Is it the correct way to
>> to access to it?
>>
>> I'm working with ATL (ATLAS trasnformation language) instead of
>> directly with Java code, but these operations are supported as well. I
>> get the following error:
>>
>> GRAVE: ERROR: get unsupported on OclAny.
>> java.lang.RuntimeException: ERROR: get unsupported on OclAny.
>> at
>> org.eclipse.m2m.atl.engine.vm.SimpleDebugger.error(SimpleDeb ugger.java:185)
>>
>> at
>> org.eclipse.m2m.atl.engine.vm.StackFrame.printStackTrace(Sta ckFrame.java:85)
>>
>> at
>> org.eclipse.m2m.atl.engine.vm.StackFrame.printStackTrace(Sta ckFrame.java:81)
>>
>> at
>> org.eclipse.m2m.atl.engine.vm.nativelib.ASMOclAny.get(ASMOcl Any.java:140)
>> at
>> org.eclipse.m2m.atl.engine.vm.ASMOperation.realExec(ASMOpera tion.java:288)
>>
>> at
>> org.eclipse.m2m.atl.engine.vm.ASMOperation.exec(ASMOperation .java:161)...
>>
>>
>> Thanks in advance,
>> Jose E. Rivera
Re: Getting tha value of an enumeration attribute (eGet()) [message #57059 is a reply to message #57032] Wed, 28 May 2008 12:59 Go to previous messageGo to next message
Eclipse User
Originally posted by: merks.ca.ibm.com

Jose,

Well eGet is definitely implemented by the generated EMF code or by the
dynamic instance, but I know they work correctly for enums and I don't
see anything directly EMF related on the stack, so the issue must lie
elsewhere, or in your own code, which you've not shown at all. I expect
folks will need more details from you...


Jose E. Rivera wrote:
> Sorry,
>
> I saw other questions regarding this operation in this newsgroup and I
> though that was the proper one. I though that implemented operations
> for the Ecore metamodel were handled here,
>
> sorry again and thank you
>
> Ed Merks escribió:
>> Jose,
>>
>> This seems to be an OCL question so I've added that newsgroup to the
>> "to" list of the reply. You might want to show the OCL expression
>> you used.
>>
>> Or maybe it's a question more appropriate for the m2m newsgroup which
>> I've also added to the "to" list of the reply.
>>
>> I don't see EMF on the stack trace at all, so I don't have a clue.
>>
>>
>> Jose E. Rivera wrote:
>>> Hi all,
>>>
>>> I'm using (EObject) eGet(EStructuralFeature) operation to get the
>>> value of Objects' attributes and references. In all cases it works
>>> properly, but I get an error when trying to get the value of an
>>> attribute that has a EEnumLiteral as value...Is it the correct way
>>> to to access to it?
>>>
>>> I'm working with ATL (ATLAS trasnformation language) instead of
>>> directly with Java code, but these operations are supported as well.
>>> I get the following error:
>>>
>>> GRAVE: ERROR: get unsupported on OclAny.
>>> java.lang.RuntimeException: ERROR: get unsupported on OclAny.
>>> at
>>> org.eclipse.m2m.atl.engine.vm.SimpleDebugger.error(SimpleDeb ugger.java:185)
>>>
>>> at
>>> org.eclipse.m2m.atl.engine.vm.StackFrame.printStackTrace(Sta ckFrame.java:85)
>>>
>>> at
>>> org.eclipse.m2m.atl.engine.vm.StackFrame.printStackTrace(Sta ckFrame.java:81)
>>>
>>> at
>>> org.eclipse.m2m.atl.engine.vm.nativelib.ASMOclAny.get(ASMOcl Any.java:140)
>>>
>>> at
>>> org.eclipse.m2m.atl.engine.vm.ASMOperation.realExec(ASMOpera tion.java:288)
>>>
>>> at
>>> org.eclipse.m2m.atl.engine.vm.ASMOperation.exec(ASMOperation .java:161)...
>>>
>>>
>>>
>>> Thanks in advance,
>>> Jose E. Rivera
Re: [ATL] Getting tha value of an enumeration attribute (eGet()) [message #57110 is a reply to message #57059] Wed, 28 May 2008 14:23 Go to previous message
Eclipse User
Originally posted by: rivera.lcc.uma.es

Thank you again Ed..

Then, The ATL rule I'm working with is the following:

lazy rule MaudeDataType{
from
o : Ecore!EObject,
a : Ecore!EAttribute,
i : Integer
using {...}
to
c : Maude!Constant(
op <- if ...
else if a.eType.oclIsKindOf(Ecore!EEnum)
then o.eGet(a)->asSequence()->at(i).name
else o.eGet(a)->asSequence()->at(i).toString()
endif
endif,
...
)
}

For attributes with a simple data type value works properly (the "else"
branch), but when the value is a enumeration literal (the "then" branch)
does not, and the following error:
GRAVE: ERROR: get unsupported on OclAny.
is obtained. (In the example, i=1)

If the generated EMF code for eGet (or by the dynamic instance) works
correctly for enums, what can be the problem?

Thanks in advance,

Jose E. Rivera

Ed Merks escribió:
> Jose,
>
> Well eGet is definitely implemented by the generated EMF code or by the
> dynamic instance, but I know they work correctly for enums and I don't
> see anything directly EMF related on the stack, so the issue must lie
> elsewhere, or in your own code, which you've not shown at all. I expect
> folks will need more details from you...
>
>
> Jose E. Rivera wrote:
>> Sorry,
>>
>> I saw other questions regarding this operation in this newsgroup and I
>> though that was the proper one. I though that implemented operations
>> for the Ecore metamodel were handled here,
>>
>> sorry again and thank you
>>
>> Ed Merks escribió:
>>> Jose,
>>>
>>> This seems to be an OCL question so I've added that newsgroup to the
>>> "to" list of the reply. You might want to show the OCL expression
>>> you used.
>>>
>>> Or maybe it's a question more appropriate for the m2m newsgroup which
>>> I've also added to the "to" list of the reply.
>>>
>>> I don't see EMF on the stack trace at all, so I don't have a clue.
>>>
>>>
>>> Jose E. Rivera wrote:
>>>> Hi all,
>>>>
>>>> I'm using (EObject) eGet(EStructuralFeature) operation to get the
>>>> value of Objects' attributes and references. In all cases it works
>>>> properly, but I get an error when trying to get the value of an
>>>> attribute that has a EEnumLiteral as value...Is it the correct way
>>>> to to access to it?
>>>>
>>>> I'm working with ATL (ATLAS trasnformation language) instead of
>>>> directly with Java code, but these operations are supported as well.
>>>> I get the following error:
>>>>
>>>> GRAVE: ERROR: get unsupported on OclAny.
>>>> java.lang.RuntimeException: ERROR: get unsupported on OclAny.
>>>> at
>>>> org.eclipse.m2m.atl.engine.vm.SimpleDebugger.error(SimpleDeb ugger.java:185)
>>>>
>>>> at
>>>> org.eclipse.m2m.atl.engine.vm.StackFrame.printStackTrace(Sta ckFrame.java:85)
>>>>
>>>> at
>>>> org.eclipse.m2m.atl.engine.vm.StackFrame.printStackTrace(Sta ckFrame.java:81)
>>>>
>>>> at
>>>> org.eclipse.m2m.atl.engine.vm.nativelib.ASMOclAny.get(ASMOcl Any.java:140)
>>>>
>>>> at
>>>> org.eclipse.m2m.atl.engine.vm.ASMOperation.realExec(ASMOpera tion.java:288)
>>>>
>>>> at
>>>> org.eclipse.m2m.atl.engine.vm.ASMOperation.exec(ASMOperation .java:161)...
>>>>
>>>>
>>>>
>>>> Thanks in advance,
>>>> Jose E. Rivera
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