| Extension of the standard library [message #64114] |
Tue, 04 November 2008 04:51  |
Eclipse User |
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Hi Christian,
I managed to extend the standard library and added custom operations to
OCL during the development of MTL. For this, I defined a model really
close to what you did with oclstdlib.ecore and OCLStandardLibrary.java.
The implementation of these custom operations is in the
EvaluationEnvironment where I overrode CallOperation.
What I did not manage to do though, was to create a custom operation
which would return a typed sequence : my best try returned a
"Sequence(T)". This forces me to use "oclAsType" after each invocation
to accurately type the sequence.
The operation I defined is a "typed" eAllContents for EObject in order
to retrieve only the elements of a given type in the content tree of an
element : "eAllContents(EClassifier) : Sequence(T)". Obviously, the type
of the sequence content is known (EClassifier). Is there any way to
force the OCL parser to type that sequence without a subsequent call to
oclAsType?
laurent Goubet
Obeo
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fn:Laurent Goubet
n:Goubet;Laurent
org:<a href="http://www.obeo.fr/">Obeo</a>
email;internet:laurent.goubet@obeo.fr
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| Re: Extension of the standard library [message #64214 is a reply to message #64185] |
Tue, 04 November 2008 09:57  |
| Eclipse User |
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Originally posted by: cdamus.zeligsoft.com
Hi, Laurent,
No problem. It's nice to have more requestees on board to motivate this
enhancement. :-D
cW
laurent Goubet wrote:
> Christian,
>
> Yep, seems like the same as mine, thanks and sorry for not searching ;).
>
> Laurent Goubet
> Obeo
>
> Christian W. Damus a écrit :
>> Hi, Laurent,
>>
>> I think that a solution for your problem is on the plan for the 1.3
>> release. See https://bugs.eclipse.org/179990 for details.
>>
>> HTH,
>>
>> Christian
>>
>> laurent Goubet wrote:
>>> Hi Christian,
>>>
>>>
>>> I managed to extend the standard library and added custom operations
>>> to OCL during the development of MTL. For this, I defined a model
>>> really close to what you did with oclstdlib.ecore and
>>> OCLStandardLibrary.java. The implementation of these custom
>>> operations is in the EvaluationEnvironment where I overrode
>>> CallOperation.
>>>
>>> What I did not manage to do though, was to create a custom operation
>>> which would return a typed sequence : my best try returned a
>>> "Sequence(T)". This forces me to use "oclAsType" after each
>>> invocation to accurately type the sequence.
>>>
>>> The operation I defined is a "typed" eAllContents for EObject in
>>> order to retrieve only the elements of a given type in the content
>>> tree of an element : "eAllContents(EClassifier) : Sequence(T)".
>>> Obviously, the type of the sequence content is known (EClassifier).
>>> Is there any way to force the OCL parser to type that sequence
>>> without a subsequent call to oclAsType?
>>>
>>> laurent Goubet
>>> Obeo
>
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