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[Databinding]Binding multiple TreeViewers in different session to single model [message #495185]

Wed, 04 November 2009 03:48

Eclipse User

Originally posted by: cheney_chen.i-len.com

Hi All,

There is a thread[1] discuss about binding multiple TreeViewers to
single model, So what about binding multiple TreeViewers in different
session to single model? is it thread safely?

anybody give me the suggestion?

Best Regards,
Cheney

[1] http://www.eclipse.org/forums/index.php?t=msg&th=156897& amp;start=0&S=0583750f1c755db0d118cf6607afeca5

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Re: [Databinding]Binding multiple TreeViewers in different session to single model [message #495210 is a reply to message #495185]

Wed, 04 November 2009 07:54

Thomas Schindl

Messages: 6651
Registered: July 2009

Senior Member

Hi,

This heavily depends on your domain model! If your model (e.g. EMF
models are NOT threadsafe and most JavaBeanModels are neither) is thread
safe Eclipse Databinding with its realm concept will work because it's
automatically syncing changes into your UI-Thread.

What you always have to keep in mind is that why should User A see
unpersisted model changes from User B? You are going to run in many race
conditions - my suggestion is using CDO to share model between different
clients because it takes care on this problem (and much more).

Tom

Cheney Chen schrieb:
> Hi All,
>
> There is a thread[1] discuss about binding multiple TreeViewers to
> single model, So what about binding multiple TreeViewers in different
> session to single model? is it thread safely?
>
> anybody give me the suggestion?
>
> Best Regards,
> Cheney
>
> [1] http://www.eclipse.org/forums/index.php?t=msg&th=156897& amp;start=0&S=0583750f1c755db0d118cf6607afeca5

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Re: [Databinding]Binding multiple TreeViewers in different session to single model [message #495477 is a reply to message #495210]

Thu, 05 November 2009 01:34

Eclipse User

Originally posted by: cheney_chen.i-len.com

Hi Tom,

Thanks for your reply and suggestion.

Best Regards,
Cheney

Tom Schindl wrote:
> Hi,
>
> This heavily depends on your domain model! If your model (e.g. EMF
> models are NOT threadsafe and most JavaBeanModels are neither) is thread
> safe Eclipse Databinding with its realm concept will work because it's
> automatically syncing changes into your UI-Thread.
>
> What you always have to keep in mind is that why should User A see
> unpersisted model changes from User B? You are going to run in many race
> conditions - my suggestion is using CDO to share model between different
> clients because it takes care on this problem (and much more).
>
> Tom

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