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Trying to use DS with RCP [message #120584]

Mon, 03 November 2008 17:01

moritz

Messages: 2
Registered: July 2009

Junior Member

Hi there,

IŽm trying to use declarative services in my RCP-Plugin.
The information on the net are very small.
Here is a developer with nearly the same
problem( http://osdir.com/ml/ide.eclipse.equinox.devel/2007-11/msg001 02.html).
For clear understanding, is it necessary to modify the config.ini?
I found a video-tutorial on Eclipse.live
(http://live.eclipse.org/node/501) but heŽs also using the OSGI-console.

I think this is the solution(like in the video)

// Create and open a tracker for the log service
ServiceTracker logTracker = new ServiceTracker(bc,
LogService.class.getname(), null);

logTracker.open();

// use the service
((LogService)logTracker.getService()).log(LogService.LOG_INF O,
"message"));

But when running the code, i get a nullpointer using the service.
My RCP-code runs very well without the code above, so the exception
depends on using the service.

IŽm happy on every tutorial or hint.

Thanks,

Moritz

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Re: Trying to use DS with RCP [message #120622 is a reply to message #120584]

Tue, 04 November 2008 08:09

Danail Nachev

Messages: 110
Registered: July 2009

Senior Member

You need to install org.eclipse.equinox.log bundle and start it. That's
why you get NPE when trying to access the log service.

moritz Bornwasser wrote:
> Hi there,
>
> IŽm trying to use declarative services in my RCP-Plugin.
> The information on the net are very small.
> Here is a developer with nearly the same
> problem( http://osdir.com/ml/ide.eclipse.equinox.devel/2007-11/msg001 02.html).
>
> For clear understanding, is it necessary to modify the config.ini?
> I found a video-tutorial on Eclipse.live
> (http://live.eclipse.org/node/501) but heŽs also using the OSGI-console.
>
> I think this is the solution(like in the video)
>
>
>
> // Create and open a tracker for the log service
> ServiceTracker logTracker = new ServiceTracker(bc,
> LogService.class.getname(), null);
>
> logTracker.open();
>
> // use the service
> ((LogService)logTracker.getService()).log(LogService.LOG_INF O, "message"));
>
> But when running the code, i get a nullpointer using the service.
> My RCP-code runs very well without the code above, so the exception
> depends on using the service.
>
> IŽm happy on every tutorial or hint.
>
> Thanks,
>
> Moritz
>

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Re: Trying to use DS with RCP [message #120635 is a reply to message #120622]

Tue, 04 November 2008 10:30

moritz

Messages: 2
Registered: July 2009

Junior Member

Sorry, wrong understanding.

It was only an example on using services, or how i think to use a service.

But you said i should start the service. How can i start sevice using
rcp-plugins?

thanks mo

Report message to a moderator

Re: Trying to use DS with RCP [message #120663 is a reply to message #120635]

Tue, 04 November 2008 11:14

Danail Nachev

Messages: 110
Registered: July 2009

Senior Member

You need to change osgi.bundles property defined in your config.ini and
append the org.eclipse.equinox.log bundle with @start parameter. This
will install and activate the LogService.

moritz wrote:
> Sorry, wrong understanding.
>
> It was only an example on using services, or how i think to use a service.
>
> But you said i should start the service. How can i start sevice using
> rcp-plugins?
>
> thanks mo
>

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