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ECP Model Validation before changes commit [message #1691944]

Fri, 10 April 2015 12:28

Eclipse User

We have registered custom constraints on our model that is visualized using EMF Forms. The constraints are validated well and the UI is updated accordingly. However this is done after the changes are committed to the model. And it's possible to save the model with the violated constraints. It's even possible to share/push the model with the errors to the shared repo. Which means others can take the model with the errors.

What we want to achieve is to perform validation of the changes BEFORE transaction commit so that in case of constraints violation the transaction is reverted. And as soon as the error is fixed, the transaction is committed.

How can we achieve this?

Thanks.

Re: ECP Model Validation before changes commit [message #1692104 is a reply to message #1691944]

Mon, 13 April 2015 09:21

Eclipse User

Hi,

what exactly do you mean by "commit"? Commiting the changes to a server
or saving them locally?

Best regards

Jonas

Am 10.04.2015 um 18:28 schrieb Aboubacar Kaba:
> We have registered custom constraints on our model that is visualized
> using EMF Forms. The constraints are validated well and the UI is
> updated accordingly. However this is done after the changes are
> committed to the model. And it's possible to save the model with the
> violated constraints. It's even possible to share/push the model with
> the errors to the shared repo. Which means others can take the model
> with the errors.
>
> What we want to achieve is to perform validation of the changes BEFORE
> transaction commit so that in case of constraints violation the
> transaction is reverted. And as soon as the error is fixed, the
> transaction is committed.
> How can we achieve this?
>
> Thanks.

--
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Re: ECP Model Validation before changes commit [message #1692118 is a reply to message #1692104]

Mon, 13 April 2015 11:11

Eclipse User

Hi Jonas,

What I mean by "commit" is committing the changes locally to the model. The EMF Validation "Live Mode" allows validating a model against live constraints and if there is error, rolls back the transaction. It the kind of "thing" I would like to know with the ECP.

Thanks.

Re: ECP Model Validation before changes commit [message #1692404 is a reply to message #1692118]

Wed, 15 April 2015 09:30

Eclipse User

EMF Models are typically validated based on their state, meaning the
changes are already written into the model. What do you refer to as the
"Live Mode"?

One simple solution would be to create a copy which is then shown in the
form and update the values in the original, once the validation is
successful.

Best regards

Jonas

Am 13.04.2015 um 17:11 schrieb Aboubacar Kaba:
> Hi Jonas,
>
> What I mean by "commit" is committing the changes locally to the model.
> The EMF Validation "Live Mode" allows validating a model against live
> constraints and if there is error, rolls back the transaction. It the
> kind of "thing" I would like to know with the ECP.
>
> Thanks.
>

--
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http://eclipsesource.com/en/services/developer-support/

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