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checking one of the references can be created [message #1769945]

Sun, 06 August 2017 14:37

Eclipse User

Hi,

When I create an instance of "Families" metamodel, It is not possible to e.g., a Member be both (Family) mother and (Family) father or mother and daughter or etc. I want to know which property in its metamodel causes that?

I attached the metamodel and the model.

Attachment: f.model
(Size: 0.27KB, Downloaded 301 times)
Attachment: Families.ecore
(Size: 2.10KB, Downloaded 287 times)
Attachment: Screen Shot 2017-08-06 at 11.05.26 PM.png
(Size: 18.15KB, Downloaded 202 times)

Re: checking one of the references can be created [message #1769957 is a reply to message #1769945]

Mon, 07 August 2017 01:55

Eclipse User

All the references of Family are containment references. Any instance can only be in at most one containment reference; adding an instance to a containment reference will remove it from any other containment reference where it's currently contained.

Re: checking one of the references can be created [message #1769963 is a reply to message #1769957]

Mon, 07 August 2017 02:57

Eclipse User

Hi

It is very unfortunate that the families and Families2Persons transformation have become standard intro examples.

The containment perverseness of the Families model is very confusing. (There is no actual specification, so it isn't actually a bug; just an offense against common sense.)

Regards

Ed Willink

Re: checking one of the references can be created [message #1770013 is a reply to message #1769963]

Mon, 07 August 2017 09:59

Eclipse User

Thanks a lot all

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