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https://issues.apache.org/jira/browse/FELIX-4869?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Pierre De Rop closed FELIX-4869.
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> Callbacks not invoked for dependencies that are added after the component is
> initialized
> ----------------------------------------------------------------------------------------
>
> Key: FELIX-4869
> URL: https://issues.apache.org/jira/browse/FELIX-4869
> Project: Felix
> Issue Type: Bug
> Components: Dependency Manager
> Affects Versions: org.apache.felix.dependencymanager-r2
> Reporter: Bram Pouwelse
> Assignee: Pierre De Rop
> Fix For: org.apache.felix.dependencymanager-r3
>
>
> When adding a ServiceDependency after the component is initialized the
> dependency manager doesn't invoke callbacks for services already registered
> before the dependency was added.
> I'm using the 4.0.1 version of the dependency manager.
> I've created a small example to demonstrate the issue.
> {code:title=TestComponent.java}
> ...
> public class TestComponent {
> private volatile DependencyManager dm;
> private volatile Component c;
>
> public void addDependency(){
>
> c.add(dm.createServiceDependency().setService(Object.class).setCallbacks("add",
> "remove"));
> }
>
> public void add(ServiceReference<?> ref) {
> System.out.println("added " + ref)
> }
>
> public void remove(ServiceReference<?> ref) {
> System.out.println("removed " + ref)
> }
> }
> {code}
> When the dependency is added *after* the services are registered the add
> callback is never invoked.
> {code:title=Activator.java}
> ...
> @Override
> public void init(BundleContext ctx, DependencyManager dm) throws Exception {
> TestComponent testComponent = new TestComponent();
> dm.add(createComponent().setImplementation(testComponent));
>
> ctx.registerService(Object.class, new Object(), null);
> ctx.registerService(Object.class, new Object(), null);
> testComponent.addDependency();
> }
> ...
> {code}
> When the dependency is added *before* the services are registered the add
> callback are invoked.
> {code:title=Activator.java}
> ...
> @Override
> public void init(BundleContext ctx, DependencyManager dm) throws Exception {
> TestComponent testComponent = new TestComponent();
> dm.add(createComponent().setImplementation(testComponent));
>
> testComponent.addDependency();
>
> ctx.registerService(Object.class, new Object(), null);
> ctx.registerService(Object.class, new Object(), null);
> }
> ...
> {code}
> I've noticed something similar when adding multiple service dependencies in
> the init method. When adding the dependencies in one call to
> Component#add(Dependency...) everything seems to work as expected but when
> calling the add method one component at a time callbacks not invoked for the
> second service dependency.
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