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What is the best way to keep the meta data(or some info) for the diagram ? [message #1727859]

Mon, 28 March 2016 11:38

Eclipse User

Hi there,

Imagine there is an option for the user to choose the option of showing or hiding a transition label on the diagram. How can I keep that info e.g. showTransitionLabel=on | off.

One way could be creating an ecore metamodel an keep these info in it. but then the user needs to create the emf file for it and it will be tedious. One way could be to create a textfile and keep all the data in it.

So, if you have any experience on this matter, please help me which way is the standard way ?

Thanks,
Parsa

Re: What is the best way to keep the meta data(or some info) for the diagram ? [message #1727902 is a reply to message #1727859]

Tue, 29 March 2016 03:42

Eclipse User

On 28-Mar-16 17:38, Parsa Pourali wrote:
> Hi there,
>
> Imagine there is an option for the user to choose the option of showing
> or hiding a transition label on the diagram. How can I keep that info
> e.g. showTransitionLabel=on | off.

What I do in a similar case is to set a DAnnotation on a Diagram to
store filter state from an extension.

IIRC in Capella they use a dummy collapse filter and then access the
filter state in the label expression to show different labels.

Felix

Re: What is the best way to keep the meta data(or some info) for the diagram ? [message #1727950 is a reply to message #1727902]

Tue, 29 March 2016 13:00

Eclipse User

Hi Felix,

Thanks for your reply.

Could you please tell me where should I define DAnnotation ? Is it in my ecore metamodel ?

Also, that filter thing does not work for me, it is not only about transitions and labels. Consider a user can choose the option of showing an association as just an "Association Edge" or as an "Association Class".

I also prefer not to embed it in my ecore meta model if there is another way of doing it.

Thanks,
Parsa

Re: What is the best way to keep the meta data(or some info) for the diagram ? [message #1728010 is a reply to message #1727950]

Wed, 30 March 2016 04:55

Eclipse User

On 29-Mar-16 19:00, Parsa Pourali wrote:
> Hi Felix,
>
> Thanks for your reply.
>
> Could you please tell me where should I define DAnnotation ? Is it in my
> ecore metamodel ?

Nope, DAnnotation is an element of sirius metamodel, not your domain
model. If you know Ecore EAnnotations, you know DAnnotations, they work
exactly the same way. You just need to define one yourself and attach it
to the corresponding Diagram or whatever element.

DAnnotation annot = ViewpointFactory.eINSTANCE.createDAnnotation();
annot.setSource("My Very Special Source")
annot.put("ShowAssociationClasses", Boolean.TRUE.toString())
DSemanticDiagram.getDAnnotations().add(myAnnotation)

Then later you check for these attributes in your predicate expressions.

> Also, that filter thing does not work for me, it is not only about
> transitions and labels. Consider a user can choose the option of showing
> an association as just an "Association Edge" or as an "Association Class".

Hmm, maybe a Filter would actually also work in this case. It's kind of
abusing the mechanism but well.. I just mention filters because they
allow you to store some per-diagram on/off state without tinkering with
annotations.

In your association edge example, maybe you could also use separate
layers for each representation.

I just mean to say that before using DAnnotations, try to find a more
"Sirius" way to do something.

Felix

Re: What is the best way to keep the meta data(or some info) for the diagram ? [message #1728218 is a reply to message #1728010]

Fri, 01 April 2016 00:12

Eclipse User

Hi Felix,

Thank you for your reply and help.

I have tried to :
-create a java service which will be run on the first time that the diagram is being created. Am I doing it right?

- The thing is that
DAnnotation annot = ViewpointFactory.eINSTANCE.createDAnnotation();
does not have any createDAnnotation() method ! Am I doing something wrong ?

Thank you,
Bests,
Parsa

Re: What is the best way to keep the meta data(or some info) for the diagram ? [message #1728256 is a reply to message #1728218]

Fri, 01 April 2016 07:24

Eclipse User

On 01-Apr-16 06:12, Parsa Pourali wrote:

> I have tried to :
> -create a java service which will be run on the first time that the
> diagram is being created. Am I doing it right?

A Java service is just something you can use in an expression in your
odesign model... It's not being called on Diagram creation. If you still
need more help, it would be better if you'd give a concrete problem that
you're trying to solve. Otherwise it's going to be hard.

> - The thing is that DAnnotation annot =
> ViewpointFactory.eINSTANCE.createDAnnotation();
> does not have any createDAnnotation() method ! Am I doing something wrong ?

Sorry, I was too fast. Whenever you need to create some EObject, just
look up the correct factory by looking at the last segment in the
package name:

Ctrl+Shift+T : DAnnotation => You can see that it's in
....viewpoint.description, this means you use
DescriptionFactory.eINSTANCE.createDAnnotation().

Re: What is the best way to keep the meta data(or some info) for the diagram ? [message #1728269 is a reply to message #1728256]

Fri, 01 April 2016 09:12

Eclipse User

Hi Parsa,

Le 01/04/2016 13:24, Felix Dorner a écrit :
> On 01-Apr-16 06:12, Parsa Pourali wrote:
>
>> I have tried to :
>> -create a java service which will be run on the first time that the
>> diagram is being created. Am I doing it right?
>
> A Java service is just something you can use in an expression in your
> odesign model... It's not being called on Diagram creation. If you still
> need more help, it would be better if you'd give a concrete problem that
> you're trying to solve. Otherwise it's going to be hard.
>
>> - The thing is that DAnnotation annot =
>> ViewpointFactory.eINSTANCE.createDAnnotation();
>> does not have any createDAnnotation() method ! Am I doing something
>> wrong ?
>
> Sorry, I was too fast. Whenever you need to create some EObject, just
> look up the correct factory by looking at the last segment in the
> package name:
>
> Ctrl+Shift+T : DAnnotation => You can see that it's in
> ...viewpoint.description, this means you use
> DescriptionFactory.eINSTANCE.createDAnnotation().

DAnnotation will allow you to store details in a Map<String, String>.

Maybe you should use the AnnotationEntry concept
(DescriptionFactory.eInstance.createAnnotationEntry()) which also has a
source String attribute to identifie it but have a data containment
EReference in which you can store your additional information if it is a
model. In this case take a look at
DRepresentation.getOwnedAnnotationEntries() (also available on DDiagram
which inherits from DRepresentation) and annotation getters from
DRepresentationQuery.

Regards

--
Maxime - Obeo

Need training or professional services for Sirius?
http://www.obeodesigner.com/sirius

Re: What is the best way to keep the meta data(or some info) for the diagram ? [message #1728288 is a reply to message #1728269]

Fri, 01 April 2016 12:11

Eclipse User

Thank you both, I can see what you guys are talking about now Smile

Thank you for your help Smile

Bests,
Parsa

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