Hey Alain,
Just trying to understand the use case better, so a couple questions:
Since your component is prototype scope, and if no one has any instances of
it why bother disabling it, isn't it effectively only a fairly inert
service reference at that point?
Are you saying that when released as a prototype instance, it should never
be used again, ever?
Perhaps the service you described above could be a factory for instances of
`ZkViewModel, BaItem, MasterDetailTopMenuListener` instead of being one
itself.
- Ray
On Sat, Sep 21, 2019 at 5:05 AM Alain Picard via osgi-dev <
osgi-dev@mail.osgi.org> wrote:
> I'm facing a case where the UI framework is sending a destroy request when
> a page is destroyed and I want to use that to also deactivate the
> component, so that its "host" can then automatically get deactivated and so
> on so forth as needed.
>
> As shown below I tried to use disableComponent. That results in some
> errors as it runs under [SCR Component Actor] thread that is not session
> aware and also looking at the stack trace it seems to be deactivating the
> full user session, which is not what I'm expecting.
>
> So am I deactivating correctly here, how can I make sure this runs in a
> session aware thread (as I don't control here this separate thread
> launch/run) and is there a utility to better understand service instance
> dependencies that would allow tracking the impact of a deactivation.
>
> Cheers,
> Alain
>
>
>
> Here's the case:
> @Component(service = ViewpointsViewModeTabViewModel.class, scope =
> ServiceScope.PROTOTYPE)
> public class ViewpointsViewModeTabViewModel extends
> ViewModeTabboxItemViewModel {
> ...
> @Reference(scope = ReferenceScope.PROTOTYPE_REQUIRED)
> private BaViewPointsViewModel baViewPointsViewModel;
> ...
> }
>
> and
> @Component(service = BaViewPointsViewModel.class,
> scope=ServiceScope.PROTOTYPE)
> @Init(superclass = true)
> public final class BaViewPointsViewModel extends
> ViewPointsViewModel<ViewpointTabboxItemViewModel>
> implements ZkViewModel, BaItem, MasterDetailTopMenuListener {
> ...
> @Activate
> private void activate(ComponentContext context, Map<String, Object>
> properties) {
> this.context = context;
> pid = (String)properties.get(ComponentConstants.COMPONENT_NAME);
>
> log.trace("Activating {}/{}", getClass(),
> System.identityHashCode(this)); //$NON-NLS-1$
> initTabs();
> }
> @Deactivate
> private void deactivate() {
> log.trace("Deactivating {}/{}", getClass(),
> System.identityHashCode(this)); //$NON-NLS-1$
> super.zkDestroy();
> ungetServices();
> clearTabs();
> }
>
> @Override
> @Destroy
> public void zkDestroy() {
> log.trace("Destroying {}/{}", getClass(),
> System.identityHashCode(this)); //$NON-NLS-1$
> deactivate();
> context.disableComponent(pid); //attempt to manually deactivate itself.
> }
> }
>
>
> Alain Picard
> Chief Strategy Officer
> Castor Technologies Inc
> o:514-360-7208
> m:813-787-3424
>
> pic...@castortech.com
> www.castortech.com
> _______________________________________________
> OSGi Developer Mail List
> osgi-dev@mail.osgi.org
> https://mail.osgi.org/mailman/listinfo/osgi-dev
--
*Raymond Augé* <http://www.liferay.com/web/raymond.auge/profile>
(@rotty3000)
Senior Software Architect *Liferay, Inc.* <http://www.liferay.com>
(@Liferay)
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