To add my 2cts. If you do not have specific requirements for
ordering ... do not manually unregister. It is hard to know what
services you actually registered and therefore not trivial to maintain
consistency.
Most state oriented services should use Service Factory services and
the clean up is perfectly ordered that way. I.e. with a Service
Factory you know there are no more connections because they have all
been unget. If you stop, the framework must unwind the gets/ungets so
you can use the same clean up as for the case when all your users have
gone.
Kind regards,
Peter Kriens
On 31 mrt 2008, at 18:14, BJ Hargrave wrote:
It is up to you. If the framework removes them, they will be removed
in a random order. If you have several listeners and registered
services which should be shutdown in some orderly manner, you will
need to shut them down yourself.
--
BJ Hargrave
Senior Technical Staff Member, IBM
OSGi Fellow and CTO of the OSGi Alliance
[EMAIL PROTECTED]
office: +1 386 848 1781
mobile: +1 386 848 3788
From: Meng Xin Zhu <[EMAIL PROTECTED]>
To: [email protected]
Cc: Xiang Yu Hao <[EMAIL PROTECTED]>
Date: 2008/03/31 06:17 AM
Subject: [equinox-dev] my confusion for unregistering services in
bundle.stop
I find below description in the OSGi R4 specification section '4.3.6
Activation':
stop(BundleContext) – This method must undo all the actions of the
BundleActivator.start(BundleContext) method. However, it is
unnecessary to unregister services or Framework listeners, because
they must be cleaned up by the Framework anyway.
Recently I read a post introducing development best practices(it's
ibm internal site), it says:
While the OSGi Framework will clean up services and service
references, it is still good programming practice to clean up what
you allocate.
If you register services in the start() method, unregister the
services in the stop() method.
If you create (and open) a ServiceTracker in the start() method,
close it in the stop() method.
If you start threads or jobs in your start() method, make sure that
the threads or jobs are terminated by your stop method.
Which practice I would choice when programming OSGi service under
Equinox? Thanks
Best Regards
Zhu Meng Xin
IBM Workplace Client Technology
Tel: 86-10-82452244-52342 Fax: 86-10-82452887
NOTES: Meng Xin Zhu/China/IBM E-mail: [EMAIL PROTECTED]
equinox-dev mailing list
[email protected]
https://dev.eclipse.org/mailman/listinfo/equinox-dev
_______________________________________________
equinox-dev mailing list
[email protected]
https://dev.eclipse.org/mailman/listinfo/equinox-dev
_______________________________________________
equinox-dev mailing list
[email protected]
https://dev.eclipse.org/mailman/listinfo/equinox-dev
