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Rollback to a previous state of the model [message #1791747]

Wed, 04 July 2018 16:46

Parsa Pourali

Messages: 210
Registered: February 2014

Senior Member

Hello,

I'm trying to apply some modifications to the model programmatically. However, during the modification phase, it is possible to throw exceptions. I was wondering if there is any "neat" way to take a snapshot of the model at some point and then rollback to the last snapshot in case of the exception. Note that my model is an xText resource.

Any help would be appreciated.

Thanks,
Parsa

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Re: Rollback to a previous state of the model [message #1791780 is a reply to message #1791747]

Thu, 05 July 2018 08:27

Steve Monnier

Messages: 572
Registered: May 2011

Senior Member

Hello,

If your modifications are done using RecordingCommands, if a modification throws exceptions it will be rollbacked to the previous state. Otherwise, I guess you can add a CommandStackListener to the commandStack (session.getTransactionalEditingDomain().getCommandStack()) and have it behaving as a flag where you can undo all following events.

Regards,
Steve

Steve Monnier - Obeo Canada
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