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Deleting Figures doesnt update my constraint self->size() [message #49314]

Sat, 16 September 2006 08:40

Eclipse User

------------hNg1Z9Y9NREVEKzxZSFLmq
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Hallo,

I have a metamodel where Class Header is linked with Class DataMessage by
Class MessageLinker.

I have enclosed the metamodel as well for your reference.

My problem is with haveing a single Header figure.

self.targetMessageLinker->size() validates to 0.

But after i draw a link between Header and DataMessage the constraint
results in 1.

And when i delete the link mapping and the datamessage, the constrait
results in 1 inspite of showing 0.

But when i delete the header figure and draw a new header figure and
enforce this constraint; it results in 0.

Is there any work around for this.

Regards,
Madanagopal.

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------------hNg1Z9Y9NREVEKzxZSFLmq--

Re: Deleting Figures doesnt update my constraint self->size() [message #49908 is a reply to message #49314]

Mon, 18 September 2006 09:51

Eclipse User

Hello Madanagopal,

Try debuggin generated MessageLinkedEditPolicy.getDestroyElementCommand()
and corresponding command execution - this command should be called on deleting
the link.

-----------------
Alex Shatalin

Re: Deleting Figures doesnt update my constraint self->size() [message #49961 is a reply to message #49908]

Mon, 18 September 2006 09:58

Eclipse User

Originally posted by: vcciubot.uwaterloo.ca

Here's some code that removes a connection from the model when one the
ends is removed:

public abstract class EndEditHelper extends AbstractEditHelper {
/**
* Gets a command to destroy the connections incident to this block
*/
protected ICommand getDestroyDependentsCommand(DestroyDependentsRequest request) {
End end = (End) request.getElementToDestroy();

Set ret = new HashSet();
ret.addAll(end.getOutgoingConnections());
ret.addAll(end.getIncomingConnections());

return request.getDestroyDependentsCommand(ret);
}

}

On Mon, 18 Sep 2006 13:51:45 +0000, Alex Shatalin wrote:

> Hello Madanagopal,
>
> Try debuggin generated MessageLinkedEditPolicy.getDestroyElementCommand()
> and corresponding command execution - this command should be called on deleting
> the link.
>
> -----------------
> Alex Shatalin

Re: Deleting Figures doesnt update my constraint self->size() [message #50485 is a reply to message #49961]

Mon, 18 September 2006 21:12

Eclipse User

Hallo Alex and Vlad,

Thanks for your comments.

When i debugged at the said place, i came across a conclusion..
Consider; a Header connected to two DataMessages by linkMapping

when i delete one link mapping the constraint validates correctly =

specifying the number of Data Messages currently connected to the Header=
..
and
Context Header
inv: self.targetMessageLinker->size() results in 1

But when i delete the datamessage directly; this causes the link mapping=
=

to disappear(which is welcome) but still the count of DataMessages is no=
t =

decreased. and

Context Header
inv: self.targetMessageLinker->size() results in 2

Is there any work around.
Thanks.
Madan

On Mon, 18 Sep 2006 15:58:20 +0200, Vlad Ciubotariu =

<vcciubot@uwaterloo.ca> wrote:

> Here's some code that removes a connection from the model when one the=

> ends is removed:
>
> public abstract class EndEditHelper extends AbstractEditHelper {
> /**
> * Gets a command to destroy the connections incident to this block
> */
> protected ICommand getDestroyDependentsCommand(DestroyDependentsReque=
st =

> request) {
> End end =3D (End) request.getElementToDestroy();
> =

> Set ret =3D new HashSet();
> ret.addAll(end.getOutgoingConnections());
> ret.addAll(end.getIncomingConnections());
> =

> return request.getDestroyDependentsCommand(ret);
> }
> =

> }
>
> On Mon, 18 Sep 2006 13:51:45 +0000, Alex Shatalin wrote:
>
>> Hello Madanagopal,
>>
>> Try debuggin generated =

>> MessageLinkedEditPolicy.getDestroyElementCommand()
>> and corresponding command execution - this command should be called o=
n =

>> deleting
>> the link.
>>
>> -----------------
>> Alex Shatalin
>

Re: Deleting Figures doesnt update my constraint self->size() [message #50595 is a reply to message #50485]

Tue, 19 September 2006 04:48

Eclipse User

Hello Madanagopal,

> when i delete one link mapping the constraint validates correctly
How do you perform this deletion? Do you remove notation model element or
underlying semantic model element?
I suggest you to send DestroyElementRequest to the link editpart and execute
returned command - in this case you will delete link in a proper way.

-----------------
Alex Shatalin

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