Home » Modeling » OCL » Navigating over eContainer()
| Navigating over eContainer() [message #486862] |
Sun, 20 September 2009 06:04  |
Eclipse User |
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Hi,
I have Ecore models with EClass A having a reference to EClass B, a
composition where A 'owns' B. The reference is configured with
setContainment(true). There is no opposite relation because I don't have
it/want it/need it. Is there a way to navigate from an instance of B back to
an instance of A with OCL? As far as I can see, it seems B.eContainer()
would have to be used by OCL to achieve this. Is there a syntax for this?
Thanks in advance.
Derek
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| Re: Navigating over eContainer() [message #486921 is a reply to message #486877] |
Sun, 20 September 2009 23:40  |
| Eclipse User |
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Thanks Radek!!!
I searched the java doc and found the option in ParsingOptions.
Unfortunately, I just don't get how to specify the parameters due to some
lack of understanding of Java generics I guess.
Here is what I have. I tried EObject in the 3rd parameter but it does not
like it. Oddly I found no code in my environment setting this option which I
could refer to. Please tell me the magical syntax. :)
Derek
Environment<EPackage, EClassifier, EOperation, EStructuralFeature,
EEnumLiteral, EParameter, EObject, CallOperationAction, SendSignalAction,
Constraint, EClass, EObject>
rootEnv = EcoreEnvironmentFactory.INSTANCE.createEnvironment();
ParsingOptions.setOption(rootEnv, ParsingOptions.implicitRootClass(rootEnv),
<What goes here????>);
"radek dvorak" <dvorak.radek@gmail.com> wrote in message
news:op.u0khhsom12y5f2@kliste.local...
> Hi Derek,
>
> You can set the "implicit root class" parser option to EObject and then
> ecore reflective operations
> like eClass(), eCotainer() should be available.
>
> The Stdlib of QVT comes with Element::container().
>
> Regards,
> /Radek
>
>
>
> On Sun, 20 Sep 2009 12:04:04 +0200, Derek Palma <derek.palma@gmail.com>
> wrote:
>
>> Hi,
>>
>> I have Ecore models with EClass A having a reference to EClass B, a
>> composition where A 'owns' B. The reference is configured with
>> setContainment(true). There is no opposite relation because I don't have
>> it/want it/need it. Is there a way to navigate from an instance of B
>> back to an instance of A with OCL? As far as I can see, it seems
>> B.eContainer() would have to be used by OCL to achieve this. Is there a
>> syntax for this?
>>
>> Thanks in advance.
>> Derek
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| Re: Navigating over eContainer() [message #486927 is a reply to message #486921] |
Mon, 21 September 2009 01:30 |
| Eclipse User |
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Hi Derek
The org.eclipse.ocl.ecore.tests.ParsingOptionsTest JUnit test does
ParsingOptions.setOption(ocl.getEnvironment(),
ParsingOptions.implicitRootClass(ocl.getEnvironment()),
EcorePackage.Literals.EOBJECT);
This should not be necessary. The OCL 2.0 specification is hardly clear
but your meta-model types conform to OclAny and Classifier so any
operation of Classifier, such as container() should work. Hopefully
fixed in the next release.
Regards
Ed Willink
Derek Palma wrote:
> Thanks Radek!!!
>
> I searched the java doc and found the option in ParsingOptions.
> Unfortunately, I just don't get how to specify the parameters due to
> some lack of understanding of Java generics I guess.
>
> Here is what I have. I tried EObject in the 3rd parameter but it does
> not like it. Oddly I found no code in my environment setting this option
> which I could refer to. Please tell me the magical syntax. :)
>
> Derek
>
> Environment<EPackage, EClassifier, EOperation, EStructuralFeature,
> EEnumLiteral, EParameter, EObject, CallOperationAction,
> SendSignalAction, Constraint, EClass, EObject>
>
> rootEnv = EcoreEnvironmentFactory.INSTANCE.createEnvironment();
>
> ParsingOptions.setOption(rootEnv,
> ParsingOptions.implicitRootClass(rootEnv), <What goes here????>);
>
>
>
>
>
> "radek dvorak" <dvorak.radek@gmail.com> wrote in message
> news:op.u0khhsom12y5f2@kliste.local...
>> Hi Derek,
>>
>> You can set the "implicit root class" parser option to EObject and
>> then ecore reflective operations
>> like eClass(), eCotainer() should be available.
>>
>> The Stdlib of QVT comes with Element::container().
>>
>> Regards,
>> /Radek
>>
>>
>>
>> On Sun, 20 Sep 2009 12:04:04 +0200, Derek Palma
>> <derek.palma@gmail.com> wrote:
>>
>>> Hi,
>>>
>>> I have Ecore models with EClass A having a reference to EClass B, a
>>> composition where A 'owns' B. The reference is configured with
>>> setContainment(true). There is no opposite relation because I don't
>>> have it/want it/need it. Is there a way to navigate from an instance
>>> of B back to an instance of A with OCL? As far as I can see, it seems
>>> B.eContainer() would have to be used by OCL to achieve this. Is there
>>> a syntax for this?
>>>
>>> Thanks in advance.
>>> Derek
>
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