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Self(Operation).setType(newType: Type) [message #1791577]

Mon, 02 July 2018 15:17

Israr Ahmad

Messages: 4
Registered: July 2018

Junior Member

Hey:
I am new in acceleo eclipse (M2T) transformation, kindly help me how to use Self.setType(newType: Type) function of OCL. Specially how to define newType:Type of self.setType(newType: Type).

Regards:

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Re: Self(Operation).setType(newType: Type) [message #1791586 is a reply to message #1791577]

Mon, 02 July 2018 16:11

Ed Willink

Messages: 7489
Registered: July 2009

Senior Member

Hi

OCL is a side-effect free language so there is no operations such as setType. You need to be much clearer about what you are trying to do, probably with a repro.

Regards

Ed Willink

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Re: Self(Operation).setType(newType: Type) [message #1791602 is a reply to message #1791586]

Mon, 02 July 2018 17:47

Israr Ahmad

Messages: 4
Registered: July 2018

Junior Member

Hey:
Thanks to reply me, I have an operation in uml class without return type and assign the return type to that operation in acceleo M2T transformation code like i am doing with Self.setType(newType: type), or give me some alternative way to do it.

Regards:

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Re: Self(Operation).setType(newType: Type) [message #1791606 is a reply to message #1791602]

Mon, 02 July 2018 19:26

Ed Willink

Messages: 7489
Registered: July 2009

Senior Member

You need to be much clearer about what you are trying to do, probably with a repro.

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Re: Self(Operation).setType(newType: Type) [message #1791625 is a reply to message #1791606]

Tue, 03 July 2018 07:16

Israr Ahmad

Messages: 4
Registered: July 2018

Junior Member

Hey:
Ok, I have attached two .PNG file where you can see in "UML class diagram" file, operations "DAO" without return type and a applied stereotype "Operation_Req" which will be decide its return type in M2T transformation code.
In Second file "M2T-Code", where I want to generate code of return type of DAO operation with the help of applied stereotype.
Kindly help me how can do it?

Regards:

Attachment: M2T-Code.PNG
(Size: 20.99KB, Downloaded 160 times)
Attachment: UML class diagram.PNG
(Size: 28.94KB, Downloaded 136 times)

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Re: Self(Operation).setType(newType: Type) [message #1791640 is a reply to message #1791625]

Tue, 03 July 2018 09:02

Ed Willink

Messages: 7489
Registered: July 2009

Senior Member

Hi

Screen shots do not provide a repro, but in this case I can perhaps guess at what you are trying to do; you might find https://wiki.eclipse.org/OCL/ForumNetiquette helpful.

Acceleo is a Model to Text language so most expressions contrbute output text. [o.setType(newType)/] does not obviously have an text value and appears to attempt to modify the input model which is illegal in a declarative language. If the value in o.type does not suit your [urposes you propbabkly want to write a getType() helper that returns the corrected working value rather than trying to correct the input.

Regards

Ed Willink

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