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| Re: Access to Tagged Values in OCL [message #65538 is a reply to message #65517] |
Thu, 25 December 2008 04:16   |
Eclipse User |
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Originally posted by: rafael.abstratt.com
Michael,
You can use Element.getValue(Stereotype stereotype, String
propertyName). See:
http://wiki.eclipse.org/OCLSnippets#Finding_all_elements_wit h_a_given_tagged_value
Cheers,
Rafael
http://abstratt.com/blog/
Michael Felderer wrote:
> Hello all,
>
> I have created a UML2 profile and want to define profile specific OCL
> constraints on it. Therefore I need access to the stereotypes and the
> tagged values within OCL.
>
> For the STEREOTYPES itself I can work with the getAppliedStereotypes
> method which works fine for me, e.g. the following query checks whehter
> a stereotype Assertion has been applied to an element:
>
> self.allOwnedElements()->select(a |
> a.getAppliedStereotypes().name->includes('Assertion'))->size() >0
>
> But I still do not know how to access the tagged values within OCL and
> how to convert them to a specific type for further reuse within a query
> (because most of the time the tagged values in my scenario are not
> strings and I want to naviagte across them or use their values).
> Can someone tell me how this works or if it does not work yet how this
> functionality can be implemented.
>
> thanks in advance,
> Michael Felderer
>
> PS.: For writing queries I use the Advanced OCL Editor
> (www.squam.info/ocleditor) which works great for that.
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| Re: Access to Tagged Values in OCL [message #65559 is a reply to message #65538] |
Fri, 26 December 2008 17:36 |
 Michael Felderer
Messages: 11
Registered: July 2009 |
Junior Member |
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thanks for your reply,
i mastered to access tagged values with, e.g.
self.getValue(self.getAppliedStereotype('TTSProfile::Service call'), 'service')
this returns (something correct).
org.eclipse.uml2.uml.internal.impl.ClassImpl@1930ebb (name: Login, visibility: <unset>) (isLeaf:
false, isAbstract: false) (isActive: false)
The return value is again a stereotype - in OCL it is of type OclAny. How can I now access a tagged
value of this returned stereotype?
Or more general, is there a procedure how i can navigate through references stored in tagged values
which are again stereotypes...
thanks,
Michael
> Michael,
>
> You can use Element.getValue(Stereotype stereotype, String
> propertyName). See:
>
> http://wiki.eclipse.org/OCLSnippets#Finding_all_elements_wit h_a_given_tagged_value
>
>
> Cheers,
>
> Rafael
> http://abstratt.com/blog/
>
> Michael Felderer wrote:
>> Hello all,
>>
>> I have created a UML2 profile and want to define profile specific OCL
>> constraints on it. Therefore I need access to the stereotypes and the
>> tagged values within OCL.
>>
>> For the STEREOTYPES itself I can work with the getAppliedStereotypes
>> method which works fine for me, e.g. the following query checks
>> whehter a stereotype Assertion has been applied to an element:
>>
>> self.allOwnedElements()->select(a |
>> a.getAppliedStereotypes().name->includes('Assertion'))->size() >0
>>
>> But I still do not know how to access the tagged values within OCL and
>> how to convert them to a specific type for further reuse within a
>> query (because most of the time the tagged values in my scenario are
>> not strings and I want to naviagte across them or use their values).
>> Can someone tell me how this works or if it does not work yet how this
>> functionality can be implemented.
>>
>> thanks in advance,
>> Michael Felderer
>>
>> PS.: For writing queries I use the Advanced OCL Editor
>> (www.squam.info/ocleditor) which works great for that.
>
>
>
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| Re: Access to Tagged Values in OCL [message #65579 is a reply to message #65517] |
Mon, 29 December 2008 13:04 |
| Eclipse User |
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Originally posted by: cdamus.zeligsoft.com
Hi, Michael,
If you are using the UMLEnvironmentFactory from the org.eclipse.ocl.uml
plug-in (which I recommend that you do), then you won't have to use the
somewhat awkward (and non-standard) getAppliedStereotypes() and
getValue() API.
OCL sees stereotypes as peers of the UML metaclasses, and accesses them
as such. The advantage of the UML environment implementation is that it
supports navigation of non-navigable association ends, which is how you
access the stereotype instances linked to your model elements.
For example, assuming that you have defined a profile using the default
names for extension ends, in which a stereotype EntityBean extends the
Class metaclass, you can access the bean attributes of some class like
this (with some helper properties defined for convenience):
context Class
def: isEntityBean : Boolean =
self.extension_EntityBean->notEmpty()
def: asEntityBean : EntityBean =
self.extension_EntityBean->any(true)
inv has_pk_mapping:
self.isEntityBean implies self.asEntityBean.primaryKey->notEmpty()
Probably a constraint like that should be defined on the stereotype, but
I hope this shows the idea.
HTH,
Christian
Michael Felderer wrote:
> Hello all,
>
> I have created a UML2 profile and want to define profile specific OCL
> constraints on it. Therefore I need access to the stereotypes and the
> tagged values within OCL.
>
> For the STEREOTYPES itself I can work with the getAppliedStereotypes
> method which works fine for me, e.g. the following query checks whehter
> a stereotype Assertion has been applied to an element:
>
> self.allOwnedElements()->select(a |
> a.getAppliedStereotypes().name->includes('Assertion'))->size() >0
>
> But I still do not know how to access the tagged values within OCL and
> how to convert them to a specific type for further reuse within a query
> (because most of the time the tagged values in my scenario are not
> strings and I want to naviagte across them or use their values).
> Can someone tell me how this works or if it does not work yet how this
> functionality can be implemented.
>
> thanks in advance,
> Michael Felderer
>
> PS.: For writing queries I use the Advanced OCL Editor
> (www.squam.info/ocleditor) which works great for that.
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