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EMF diagram editor cardinalities issue [message #1029182]

Fri, 29 March 2013 05:11

Eclipse User

Hi,
I'm trying to draw an ecore meta-model diagram (.ecordiag) using EMF editor.
I'm wondering why in associations and aggregations there is only one cardinality instead of two ?
thank you .

Re: EMF diagram editor cardinalities issue [message #1029347 is a reply to message #1029182]

Fri, 29 March 2013 10:48

Eclipse User

Which particular case do you mean? If it's 1..1 we only show one, but
for 0..* I'd expect to see two. In general, if the upper and lower
bound are the same, it only shows it once.

On 29/03/2013 8:56 AM, sams good wrote:
> Hi,
> I'm trying to draw an ecore meta-model diagram (.ecordiag) using EMF
> editor.
> I'm wondering why in associations and aggregations there is only one
> cardinality instead of two ?
> thank you .

Re: EMF diagram editor cardinalities issue [message #1029381 is a reply to message #1029347]

Fri, 29 March 2013 11:53

Eclipse User

thank you for your reply,
not really, I'm trying to apply the example of Family To Person and when I try to draw for exemple the first aggregation from left, between Family and Person (familyDaughter to daughters 0..1 to 0..*) it only shows the first one (0..1) and not (0..*), whatever the cardinality values. it doesnt allow you to add a second cardinality, in this case the 0..* one.

http://wiki.eclipse.org/images/2/26/FamiliesMetamodel.jpg

am I missing something ??
thank you.

Re: EMF diagram editor cardinalities issue [message #1029392 is a reply to message #1029381]

Fri, 29 March 2013 12:10

Eclipse User

This is definitely for an Ecore model, not UML? What does the
properties view for the reference show? You should always be able to
edit both the upper and lower bound via the properties...

On 29/03/2013 11:53 AM, sams good wrote:
> thank you for your reply,
> not really, I'm trying to apply the example of
> http://wiki.eclipse.org/ATL/Tutorials_-_Create_a_simple_ATL_transformation
> and when I try to draw for exemple the first aggregation from left,
> between Family and Person (familyDaughter to daughters 0..1 to 0..*)
> it only shows the first one (0..1) and not (0..*), whatever the
> cardinality values. it doesnt allow you to add a second cardinality,
> in this case the 0..* one.
>
> am I missing something ??
> thank you.

Re: EMF diagram editor cardinalities issue [message #1029397 is a reply to message #1029392]

Fri, 29 March 2013 12:24

Eclipse User

yes its an ecore diagram (*.ecore_diagram).
here is a snapshot in attachments
index.php/fa/14192/0/

but what's confusing me is why in ecore diagrams there is only one cardinality by association??

Attachment: Capture.JPG
(Size: 61.65KB, Downloaded 999 times)

Re: EMF diagram editor cardinalities issue [message #1029632 is a reply to message #1029397]

Fri, 29 March 2013 20:08

Eclipse User

Because they're not associations, they're references and references are
only in one direction. You'd have to create two references related via
EReference.eOpposite to form a bidirectional reference, each with its
own multiplicity.

On 29/03/2013 12:24 PM, sams good wrote:
> yes its an ecore diagram (*.ecore_diagram).
> here is a snapshot in attachments
>
> but what's confusing me is why in ecore diagrams there is only one cardinality by association??

Re: EMF diagram editor cardinalities issue [message #1029826 is a reply to message #1029632]

Sat, 30 March 2013 03:32

Eclipse User

thank you so much for the answer, its all clear to me now Smile

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