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How to restart session? [message #1022836]

Fri, 22 March 2013 12:05

Eclipse User

Hi,

I'm trying to convert our (quite big) RCP application into an RAP application and it is already runnung Smile

! But I'm facing the following problem:

In the RCP, when the application starts, all plugins and their classes are initialized, e.g. variables are given a value like

if (value == null) {value = newValue}

.

But in the RAP this only works the first time the application is startet. If it is stoped by File>Quit, all plugins are still alive. When the application is then started again by reloading the URL, all the old values are still there and the new ones will NOT be set!

Is there any way to start from a fresh session when the application is started?

Thanks for any advice!

Re: How to restart session? [message #1022871 is a reply to message #1022836]

Fri, 22 March 2013 13:23

Eclipse User

Julia Kurde <forums-noreply@xxxxxxxx> wrote:
> Hi,
>
> I'm trying to convert our (quite big) RCP application into an RAP
> application and it is already runnung :)! But I'm facing the following problem:
>
> In the RCP, when the application starts, all plugins and their classes
> are initialized, e.g. variables are given a value like if (value == null)
> {value = newValue}.
> But in the RAP this only works the first time the application is startet.
> If it is stoped by File>Quit, all plugins are still alive. When the
> application is then started again by reloading the URL, all the old
> values are still there and the new ones will NOT be set!
>
> Is there any way to start from a fresh session when the application is started?
>
> Thanks for any advice!

Hi Julia,

this is normal behavior if you store values in classes like plugin
activator or singletons since they are only created once the class loads or
plugin starts. A plugin is only started one time for all users.

If you want to store values for a user session you must use a session
singleton.

See
http://wiki.eclipse.org/RAP/FAQ%23What_is_a_Session_Singleton_and_how_can_I_implement_one

Regards,
Markus

Re: How to restart session? [message #1022900 is a reply to message #1022871]

Fri, 22 March 2013 14:58

Eclipse User

Hi Markus,

Thanks for this info! I'll need some time to get into it...

Just for anyone who can edit the RAP/FAQ pages: There is a broken link in the section "What is a Session Singleton and how can I implement one?"

The correct link is this, I guess:
http://eclipse.org/rap/developers-guide/devguide.php?topic=singletons.html&version=2.0

Re: How to restart session? [message #1039519 is a reply to message #1022900]

Fri, 12 April 2013 04:54

Eclipse User

> Just for anyone who can edit the RAP/FAQ pages: There is a broken link
> in the section "What is a Session Singleton and how can I implement one?"

Thanks for the pointer, I've fixed this link.

BTW, it's a public wiki, feel free to edit it yourself whenever you find
something that needs improvement.

Regards, Ralf

--
Ralf Sternberg

Twitter: @EclipseRAP
Blog: http://eclipsesource.com/blogs/

Professional services for RAP and RCP?
http://eclipsesource.com/services/rap/

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