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DS service injection & multiple applications & headless [message #652623]

Fri, 04 February 2011 18:11

Christophe Fondacci

Messages: 95
Registered: July 2009
Location: Paris

Member

Hello all,

Got a problem with service injection (DS) in a RCP app :
* My RCP app makes extensive use of service injection
* I am building a headless application, using all non-ui part of this app
* The headless app redefines some services whose implementation were injected by the UI part so that it can run without any UI interaction

Everything works great when the 2 notions (headless and RCP) are distinct.
I would like to bundle a single product with the RCP app AND the headless app so that the user can start our application and also use his same installation headless through command line.

The problem is that I don't know how to do this. Declaring a dependency from the RCP product to the headless plugin (containing the headless app) messes the configuration because overridden services (through "service.ranking") of the headless app are used in place of the expected IDE services.

Do you think there is a way to do this ? Am I doing something wrong ?
I think I could declare the headless service declaration with a low ranking so that IDE services will always override any declaration from the headless plugin, but i'm not sure whether this is a good way to go...

Any help would be very appreciated.
Thank you!
Christophe
http://www.nextep-softwares.com

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Re: DS service injection & multiple applications & headless [message #652872 is a reply to message #652623]

Mon, 07 February 2011 12:42

Paul Webster

Messages: 6859
Registered: July 2009
Location: Ottawa

Senior Member

On 02/04/2011 01:11 PM, Christophe Fondacci wrote:
> Do you think there is a way to do this ? Am I doing something wrong ?
> I think I could declare the headless service declaration with a low
> ranking so that IDE services will always override any declaration from
> the headless plugin, but i'm not sure whether this is a good way to go...
>

In your situation I would expect to give the IDE services a higher
ranking, so that in headless mode it picks up the headless services
(since you don't include the UI plugins) and in IDE mode you'll get your
IDE services overriding your headless ones.

But I can't vouch if that's a best practice or not, you could also try
asking in eclipse.technology.equinox

Later,
PW

--
Paul Webster
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Paul Webster
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