Eclipse Community Forums: EMF » EContentAdapter not fired for containment relation

Help

Home

Home » Modeling » EMF » EContentAdapter not fired for containment relation

Show: Today's Messages :: Show Polls :: Message Navigator

EContentAdapter not fired for containment relation [message #991769]

Thu, 20 December 2012 06:46

Deepak P

Messages: 32
Registered: January 2012

Member

Hello All,
I am very much new to EMF concepts. So i have a doubt regarding adding an EContentAdapter.

We have "MySystem" object in the Ecore. And "MySystem" has a containment relationship to "MyElements". So when i add a EContentAdapter to "MySystem", If there are any changes in "MyElements" , the notifier should be notified right ?

The code snippet is as given below

public class MySystemCreator {

private void create() {
mySystem = myFactory.createMySystem();
MySystemChangeContentAdapter mySystemChangeContentAdapter = new MySystemChangeContentAdapter();
mySystem.eAdapters().add(mySystemChangeContentAdapter );
}
}

public class MySystemChangeContentAdapter extends EContentAdapter {

@Override
public void notifyChanged(final Notification notification) {
super.notifyChanged(notification);
System.out.println("Executed");
}
}

public class CreateMyElements {

public Object[] create(){

...
mySystem.getElements().add(myElement);
}
}

So when we add "myElement" to "mySystem", the notifier is not fired.

Is it the correct way of writing a EcontentAdapter ?

Report message to a moderator

Re: EContentAdapter not fired for containment relation [message #991791 is a reply to message #991769]

Thu, 20 December 2012 07:54

Ruben Faelens

Messages: 3
Registered: December 2012

Junior Member

The notifier should really be fired. Your usage is correct.

* Check whether the mySystem element is the same in both cases (adding the eAdapter, adding the child)
* Check whether the eAdapters field of mySystem contains your custom adapter.
* Is the elements list an EList / NotifyingList? Debug inside to see whether events get fired due to an element being added.

Report message to a moderator

Re: EContentAdapter not fired for containment relation [message #994077 is a reply to message #991791]

Wed, 26 December 2012 10:20

Deepak P

Messages: 32
Registered: January 2012

Member

Hello Ruben,
Thanks for your reply.

The problem was that "mySystem" object were different.
Because of which even though custom adapter was added to "mySystem" it was not getting fired.

Regarding "elements", Yes it is a EList.

Regards,
Deepak P

Report message to a moderator

Re: EContentAdapter not fired for containment relation [message #994237 is a reply to message #994077]

Wed, 26 December 2012 19:58

Ed Merks

Messages: 33140
Registered: July 2009

Senior Member

Deepak,

Nothing looks wrong from what you described so use the debugger to see
what's actually happening.

On 26/12/2012 11:20 AM, Deepak P wrote:
> Hello Ruben,
> Thanks for your reply.
>
> The problem was that "mySystem" object were different.
> Because of which even though custom adapter was added to "mySystem" it
> was not getting fired.
>
> Regarding "elements", Yes it is a EList.
>
> Regards,
> Deepak P

Ed Merks
Professional Support: https://www.macromodeling.com/

Report message to a moderator

Re: EContentAdapter not fired for containment relation [message #995857 is a reply to message #994237]

Mon, 31 December 2012 10:07

Deepak P

Messages: 32
Registered: January 2012

Member

Hello Ed Merks,

Actually the object "mySystem" used in the class "MySystemCreator" and the one used in "CreateMyElements" are different instances.
Hence the notifier wasn't getting fired.

Thanks for your reply

Regards,
Deepak P

Report message to a moderator

Previous Topic:	Locking Mechanism in CDO
Next Topic:	[XCore] Generating artifacts

Goto Forum:

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

]

Current Time: Thu Apr 25 00:04:38 GMT 2024

.:: Contact :: Home ::.

Breadcrumbs

Sign up to our Newsletter