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Home » Eclipse Projects » Riena » [Ridgets] Support for EMFDatabinding
[Ridgets] Support for EMFDatabinding [message #21682] Tue, 17 February 2009 14:11 Go to next message
Tom Seidel is currently offline Tom SeidelFriend
Messages: 91
Registered: July 2009
Member
Hi,

Probably I'm doing something wrong, but I declare a binding as follow:

IObservableValue emfObs = EMFEditObservables.observeValue(editingDomain,
getModelObject(),
MyEMFPackage.Literals.MYOBJ__MYEATT);
myTextRidget.bindToModel(emfObs);
myTextRidget.updateFromModel();

but this does not work, The #updateFromModel is executed and the value
is rendered in the text-field, but a UI-to-Model Update does not work.
EMF has a separate DataBindingContext with different
UpdateValueStrategies. Is it possible to use a EMFDataBindingContext (I
want the use the capabilities EMF.Edit provides)? -
I didn't see any possibility to override or extend to provide my own
databinding-context.

Thx for your help
Tom

Report message to a moderator

Re: [Ridgets] Support for EMFDatabinding [message #21727 is a reply to message #21682] Tue, 17 February 2009 14:26 Go to previous messageGo to next message
Thomas Schindl is currently offline Thomas SchindlFriend
Messages: 6651
Registered: July 2009
Senior Member
Hi,

If you rely on the default converters you need to use an
EMFDatabindingContext because EMFObservables report the structural
feature as the value-type.

If Riena doesn't allows you to set it you can work around by explicitly
setting an converter but that's far from ideal :-)

Tom

Tom Seidel schrieb:
> Hi,
>
> Probably I'm doing something wrong, but I declare a binding as follow:
>
> IObservableValue emfObs = EMFEditObservables.observeValue(editingDomain,
> getModelObject(),
> MyEMFPackage.Literals.MYOBJ__MYEATT);
> myTextRidget.bindToModel(emfObs);
> myTextRidget.updateFromModel();
>
> but this does not work, The #updateFromModel is executed and the value
> is rendered in the text-field, but a UI-to-Model Update does not work.
> EMF has a separate DataBindingContext with different
> UpdateValueStrategies. Is it possible to use a EMFDataBindingContext (I
> want the use the capabilities EMF.Edit provides)? -
> I didn't see any possibility to override or extend to provide my own
> databinding-context.
>
> Thx for your help
> Tom


--
B e s t S o l u t i o n . at
------------------------------------------------------------ --------
Tom Schindl JFace-Committer
------------------------------------------------------------ --------

Report message to a moderator

Re: [Ridgets] Support for EMFDatabinding [message #21772 is a reply to message #21727] Tue, 17 February 2009 14:30 Go to previous messageGo to next message
Tom Seidel is currently offline Tom SeidelFriend
Messages: 91
Registered: July 2009
Member
Hi Tom,

> need to use an
> EMFDatabindingContext

that's exactly the problem. It seems to me I can not set this context.

Tom


Tom Schindl schrieb:
> Hi,
>
> If you rely on the default converters you need to use an
> EMFDatabindingContext because EMFObservables report the structural
> feature as the value-type.
>
> If Riena doesn't allows you to set it you can work around by explicitly
> setting an converter but that's far from ideal :-)
>
> Tom
>
> Tom Seidel schrieb:
>> Hi,
>>
>> Probably I'm doing something wrong, but I declare a binding as follow:
>>
>> IObservableValue emfObs = EMFEditObservables.observeValue(editingDomain,
>> getModelObject(),
>> MyEMFPackage.Literals.MYOBJ__MYEATT);
>> myTextRidget.bindToModel(emfObs);
>> myTextRidget.updateFromModel();
>>
>> but this does not work, The #updateFromModel is executed and the value
>> is rendered in the text-field, but a UI-to-Model Update does not work.
>> EMF has a separate DataBindingContext with different
>> UpdateValueStrategies. Is it possible to use a EMFDataBindingContext (I
>> want the use the capabilities EMF.Edit provides)? -
>> I didn't see any possibility to override or extend to provide my own
>> databinding-context.
>>
>> Thx for your help
>> Tom
>
>

Report message to a moderator

Re: [Ridgets] Support for EMFDatabinding [message #21815 is a reply to message #21772] Tue, 17 February 2009 15:04 Go to previous messageGo to next message
Thomas Schindl is currently offline Thomas SchindlFriend
Messages: 6651
Registered: July 2009
Senior Member
Tom Seidel schrieb:
> Hi Tom,
>
>> need to use an
>> EMFDatabindingContext
>
> that's exactly the problem. It seems to me I can not set this context.
>

This is one of the rare cases the DB creators failed a bit because the
Databinding-Context is not the appropriate location for this. It would
be better if I one could plug-in his/her own converters.

Something like:

------------8<------------
DatabindingContext dbc = ... ;
dbc.setConverterStrategy(....);
dbc.setValidatorStrategy(....);
------------8<------------

There's a bug with a discussion about this problem and possible solution
but this won't get fixed in time of 3.5.

Tom

--
B e s t S o l u t i o n . at
------------------------------------------------------------ --------
Tom Schindl JFace-Committer
------------------------------------------------------------ --------

Report message to a moderator

Re: [Ridgets] Support for EMFDatabinding [message #21950 is a reply to message #21815] Sun, 22 February 2009 12:56 Go to previous messageGo to next message
Tom Seidel is currently offline Tom SeidelFriend
Messages: 91
Registered: July 2009
Member
Maybe. But I'm wondering if this "failure" can't be workarounded by
Riena itself with providing some API for using my own DatabindingContext.

Any thoughts?

Tom Schindl schrieb:
> Tom Seidel schrieb:
>> Hi Tom,
>>
>>> need to use an
>>> EMFDatabindingContext
>> that's exactly the problem. It seems to me I can not set this context.
>>
>
> This is one of the rare cases the DB creators failed a bit because the
> Databinding-Context is not the appropriate location for this. It would
> be better if I one could plug-in his/her own converters.
>
> Something like:
>
> ------------8<------------
> DatabindingContext dbc = ... ;
> dbc.setConverterStrategy(....);
> dbc.setValidatorStrategy(....);
> ------------8<------------
>
> There's a bug with a discussion about this problem and possible solution
> but this won't get fixed in time of 3.5.
>
> Tom
>

Report message to a moderator

Re: [Ridgets] Support for EMFDatabinding [message #21995 is a reply to message #21682] Tue, 24 February 2009 04:31 Go to previous message
Eclipse UserFriend
Originally posted by: evolanakis.innoopract.com

Hi Tom,

- using your own DataBindingContext is not supported. Please file an
enhancement request so we can keep track of this.
http://www.eclipse.org/riena/bugs.php

- feel free to attach a standalone example (or projects) to that bug, so
we can experiment with your issue without spending lot of time with EMF.

- I know that other people on the newsgroup use EMF and Riena. Has this
been a problem, or how did you work around this?

Kind regards,
Elias.

Tom Seidel wrote:
> Hi,
>
> Probably I'm doing something wrong, but I declare a binding as follow:
>
> IObservableValue emfObs = EMFEditObservables.observeValue(editingDomain,
> getModelObject(),
> MyEMFPackage.Literals.MYOBJ__MYEATT);
> myTextRidget.bindToModel(emfObs);
> myTextRidget.updateFromModel();
>
> but this does not work, The #updateFromModel is executed and the value
> is rendered in the text-field, but a UI-to-Model Update does not work.
> EMF has a separate DataBindingContext with different
> UpdateValueStrategies. Is it possible to use a EMFDataBindingContext (I
> want the use the capabilities EMF.Edit provides)? -
> I didn't see any possibility to override or extend to provide my own
> databinding-context.
>
> Thx for your help
> Tom


--
---
Elias Volanakis
Innoopract, Inc.
http://www.innoopract.com

Report message to a moderator

Re: [Ridgets] Support for EMFDatabinding [message #580683 is a reply to message #21682] Tue, 17 February 2009 14:26 Go to previous message
Thomas Schindl is currently offline Thomas SchindlFriend
Messages: 6651
Registered: July 2009
Senior Member
Hi,

If you rely on the default converters you need to use an
EMFDatabindingContext because EMFObservables report the structural
feature as the value-type.

If Riena doesn't allows you to set it you can work around by explicitly
setting an converter but that's far from ideal :-)

Tom

Tom Seidel schrieb:
> Hi,
>
> Probably I'm doing something wrong, but I declare a binding as follow:
>
> IObservableValue emfObs = EMFEditObservables.observeValue(editingDomain,
> getModelObject(),
> MyEMFPackage.Literals.MYOBJ__MYEATT);
> myTextRidget.bindToModel(emfObs);
> myTextRidget.updateFromModel();
>
> but this does not work, The #updateFromModel is executed and the value
> is rendered in the text-field, but a UI-to-Model Update does not work.
> EMF has a separate DataBindingContext with different
> UpdateValueStrategies. Is it possible to use a EMFDataBindingContext (I
> want the use the capabilities EMF.Edit provides)? -
> I didn't see any possibility to override or extend to provide my own
> databinding-context.
>
> Thx for your help
> Tom


--
B e s t S o l u t i o n . at
------------------------------------------------------------ --------
Tom Schindl JFace-Committer
------------------------------------------------------------ --------

Report message to a moderator

Re: [Ridgets] Support for EMFDatabinding [message #580702 is a reply to message #21727] Tue, 17 February 2009 14:30 Go to previous message
Tom Seidel is currently offline Tom SeidelFriend
Messages: 91
Registered: July 2009
Member
Hi Tom,

> need to use an
> EMFDatabindingContext

that's exactly the problem. It seems to me I can not set this context.

Tom


Tom Schindl schrieb:
> Hi,
>
> If you rely on the default converters you need to use an
> EMFDatabindingContext because EMFObservables report the structural
> feature as the value-type.
>
> If Riena doesn't allows you to set it you can work around by explicitly
> setting an converter but that's far from ideal :-)
>
> Tom
>
> Tom Seidel schrieb:
>> Hi,
>>
>> Probably I'm doing something wrong, but I declare a binding as follow:
>>
>> IObservableValue emfObs = EMFEditObservables.observeValue(editingDomain,
>> getModelObject(),
>> MyEMFPackage.Literals.MYOBJ__MYEATT);
>> myTextRidget.bindToModel(emfObs);
>> myTextRidget.updateFromModel();
>>
>> but this does not work, The #updateFromModel is executed and the value
>> is rendered in the text-field, but a UI-to-Model Update does not work.
>> EMF has a separate DataBindingContext with different
>> UpdateValueStrategies. Is it possible to use a EMFDataBindingContext (I
>> want the use the capabilities EMF.Edit provides)? -
>> I didn't see any possibility to override or extend to provide my own
>> databinding-context.
>>
>> Thx for your help
>> Tom
>
>

Report message to a moderator

Re: [Ridgets] Support for EMFDatabinding [message #580727 is a reply to message #21772] Tue, 17 February 2009 15:04 Go to previous message
Thomas Schindl is currently offline Thomas SchindlFriend
Messages: 6651
Registered: July 2009
Senior Member
Tom Seidel schrieb:
> Hi Tom,
>
>> need to use an
>> EMFDatabindingContext
>
> that's exactly the problem. It seems to me I can not set this context.
>

This is one of the rare cases the DB creators failed a bit because the
Databinding-Context is not the appropriate location for this. It would
be better if I one could plug-in his/her own converters.

Something like:

------------8<------------
DatabindingContext dbc = ... ;
dbc.setConverterStrategy(....);
dbc.setValidatorStrategy(....);
------------8<------------

There's a bug with a discussion about this problem and possible solution
but this won't get fixed in time of 3.5.

Tom

--
B e s t S o l u t i o n . at
------------------------------------------------------------ --------
Tom Schindl JFace-Committer
------------------------------------------------------------ --------

Report message to a moderator

Re: [Ridgets] Support for EMFDatabinding [message #580798 is a reply to message #21815] Sun, 22 February 2009 12:56 Go to previous message
Tom Seidel is currently offline Tom SeidelFriend
Messages: 91
Registered: July 2009
Member
Maybe. But I'm wondering if this "failure" can't be workarounded by
Riena itself with providing some API for using my own DatabindingContext.

Any thoughts?

Tom Schindl schrieb:
> Tom Seidel schrieb:
>> Hi Tom,
>>
>>> need to use an
>>> EMFDatabindingContext
>> that's exactly the problem. It seems to me I can not set this context.
>>
>
> This is one of the rare cases the DB creators failed a bit because the
> Databinding-Context is not the appropriate location for this. It would
> be better if I one could plug-in his/her own converters.
>
> Something like:
>
> ------------8<------------
> DatabindingContext dbc = ... ;
> dbc.setConverterStrategy(....);
> dbc.setValidatorStrategy(....);
> ------------8<------------
>
> There's a bug with a discussion about this problem and possible solution
> but this won't get fixed in time of 3.5.
>
> Tom
>

Report message to a moderator

Re: [Ridgets] Support for EMFDatabinding [message #580820 is a reply to message #21682] Tue, 24 February 2009 04:31 Go to previous message
Elias Volanakis is currently offline Elias VolanakisFriend
Messages: 43
Registered: July 2009
Member
Hi Tom,

- using your own DataBindingContext is not supported. Please file an
enhancement request so we can keep track of this.
http://www.eclipse.org/riena/bugs.php

- feel free to attach a standalone example (or projects) to that bug, so
we can experiment with your issue without spending lot of time with EMF.

- I know that other people on the newsgroup use EMF and Riena. Has this
been a problem, or how did you work around this?

Kind regards,
Elias.

Tom Seidel wrote:
> Hi,
>
> Probably I'm doing something wrong, but I declare a binding as follow:
>
> IObservableValue emfObs = EMFEditObservables.observeValue(editingDomain,
> getModelObject(),
> MyEMFPackage.Literals.MYOBJ__MYEATT);
> myTextRidget.bindToModel(emfObs);
> myTextRidget.updateFromModel();
>
> but this does not work, The #updateFromModel is executed and the value
> is rendered in the text-field, but a UI-to-Model Update does not work.
> EMF has a separate DataBindingContext with different
> UpdateValueStrategies. Is it possible to use a EMFDataBindingContext (I
> want the use the capabilities EMF.Edit provides)? -
> I didn't see any possibility to override or extend to provide my own
> databinding-context.
>
> Thx for your help
> Tom


--
---
Elias Volanakis
Innoopract, Inc.
http://www.innoopract.com

Report message to a moderator

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