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How to define a predefined sequence attributes? [message #1198722]

Wed, 20 November 2013 08:27

Eclipse User

Hello,

my doubt is:

I have a node called Variant. Variant has a set of attributes like name and id for example.

What I want is every time that I insert a Variant the attributes can be inserted automatically, for example.

I inserted the first Variant, so the attributes will be..

Name: Variant 1
Id: 1

The Second Variant

Name: Variant 2
Id: 2

and So on..

Can someone help me?

Re: How to define a predefined sequence attributes? [message #1199135 is a reply to message #1198722]

Wed, 20 November 2013 12:53

Eclipse User

I tried the following:

NFRSoftgoalImpl nfrsoftgoal = (NFRSoftgoalImpl ) ((NodeImpl) NFRSoftgoalEditPart.this.getModel()).getElement();
int id = sequence_soft.getAndIncrement();
nfrsoftgoal.setId(String.valueOf(id));
nfrsoftgoal.setNFRSoftgoalPriority(BigInteger.valueOf(id));
nfrsoftgoal.setName("NFRSoftgoal" + id);

but, the following error happened: java.lang.IllegalStateException: Cannot modify resource set without a write transaction

I don't know how to solve this problem....

Re: How to define a predefined sequence attributes? [message #1200455 is a reply to message #1199135]

Thu, 21 November 2013 03:49

Eclipse User

Hi,

you can do what you want to do by using the gmfmap model. There is something called FeatureSeqInitializer which you can use. Your bug happens because you are not using a command. For you task you could use an EMF SetCommand.create(...) and execute it on a command stack which you can get from your edit parts for example getEditingDomain().getCommandStack().execute(command).

Ralph

Re: How to define a predefined sequence attributes? [message #1200786 is a reply to message #1198722]

Thu, 21 November 2013 07:11

Eclipse User

I need something more concrete.

What you said is very "empty" for me.

Re: How to define a predefined sequence attributes? [message #1202798 is a reply to message #1200786]

Fri, 22 November 2013 05:17

Eclipse User

Hi,

take a look here (http://wiki.eclipse.org/Graphical_Modeling_Framework/Tutorial/Part_2#Feature_Initializers). They use it.

Ralph

Re: How to define a predefined sequence attributes? [message #1203263 is a reply to message #1198722]

Fri, 22 November 2013 10:11

Eclipse User

I used the Feature Seq Initializers, but this tip doesn't do what I want.

It just initialize an attribute. What I want is every time that I insert an node, the attribute can be inserted automatically, for example.

Name: Variant 1
Id: 1

The Second Variant

Name: Variant 2
Id: 2

The Feature Seq Initializers only put a value for an attribute, the attribute doesn't change like a iteration above... 1 and after 2 and so on...

Re: How to define a predefined sequence attributes? [message #1209925 is a reply to message #1198722]

Mon, 25 November 2013 14:32

Eclipse User

Help me please.

Re: How to define a predefined sequence attributes? [message #1213637 is a reply to message #1209925]

Wed, 27 November 2013 05:21

Eclipse User

Hi,

I do not get your point. What you want to do is counting the instances as far as I understand. In OCL it would be something like [MetaType].allInstances()->size() + 1. This would generate a counter for each attribute.

Ralph

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