| Databinding & Transactional Editing Domain [message #730946] |
Thu, 29 September 2011 11:18  |
Eclipse User |
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Hi,
I'm creating an application that needs a transactional editing domain (leverages XText & Graphiti). In this application I need to create some data-entry page, allowing the user to inspect and change parts of the model. I would like to use the databinding functionality to link the JFace GUI elements with the underlying model. Since I'm not an expert in this field, I used the WindowBuilder wizards. Everything works correctly if the element is not inserted in any Resource (e.g., in those wizards that provide the user with the ability to create new elements). However, as soon as the element is inserted in a resource (directly or by containment relationships) everything stop working and the following exception is thrown:
java.lang.IllegalStateException: Cannot modify resource set without a write transaction children=[Status ERROR: org.eclipse.core.databinding code=0 An error occurred while setting the value. java.lang.IllegalStateException: Cannot modify resource set without a write transaction]
For this reason, it seems to me that my basic databinding does not use any transactional editing domain... does anybody have successfully created a databinding with a transactional resource?
Thanks for any help!
--
Matteo
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| Re: Databinding & Transactional Editing Domain [message #730959 is a reply to message #730946] |
Thu, 29 September 2011 11:26  |
| Eclipse User |
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Matteo,
Are you using EMFEditObservables? That will certainly be necessary to
get this working, but I saw this question about using EMFEditObservables
verses EMFObservables in the WindowBuilder forum yesterday and that's
not currently supported. You might look into using EEF...
On 29/09/2011 8:18 AM, Matteo wrote:
> Hi,
>
> I'm creating an application that needs a transactional editing domain
> (leverages XText & Graphiti). In this application I need to create
> some data-entry page, allowing the user to inspect and change parts of
> the model. I would like to use the databinding functionality to link
> the JFace GUI elements with the underlying model. Since I'm not an
> expert in this field, I used the WindowBuilder wizards. Everything
> works correctly if the element is not inserted in any Resource (e.g.,
> in those wizards that provide the user with the ability to create new
> elements). However, as soon as the element is inserted in a resource
> (directly or by containment relationships) everything stop working and
> the following exception is thrown:
>
> java.lang.IllegalStateException: Cannot modify resource set without a
> write transaction children=[Status ERROR: org.eclipse.core.databinding
> code=0 An error occurred while setting the value.
> java.lang.IllegalStateException: Cannot modify resource set without a
> write transaction]
>
> For this reason, it seems to me that my basic databinding does not use
> any transactional editing domain... does anybody have successfully
> created a databinding with a transactional resource?
>
> Thanks for any help!
>
> --
> Matteo
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). Now that everything starts working, I will give EEF a try!