Hi all, me again…
Suppose you have the following OSGi bundles and the related exposed services: BundleService1 -> exports service 1 and interface for service 1 BundleService2 -> exports service 2 and interface for service 2 Now I want to write the Bundle3 which will use both Service1 and Service2 (for now, just service1). So, Bundle3 (activator class) implements BundleActivator and ServiceListener. On start() I do: context.addServiceListener(this); On the serviceChanged() method I simply have a print to console. This works with no problem. ------------------------------------------------------------------------------------------------------------ Suppose now that you want to call service1 from serviceChanged method (just an example!): To call service1 I need to add dependence to pom.xml for BundleService1 in order to get reference and cast the reference to the service1 interface. Then, on the activator class I need to put an import for the service1 interface. Then I get the reference, evaluate the property, cast it to service1 and call the service1. Now, testing this stuff: I install Bundle3 and start it. I install BundleService1 and start it. Nothing happens on bundle3 serviceChanged!!! Then I install BundleService2 and start it. The bundle3 serviceChanged is called!!! If I install and start any other bundles serviceChanged is always called, except for BundleService1! If I remove the import directive from Bundle3 (while the POM dependence remains) and comment the related code, Bundle3 serviceChanged is called for BundleService1! My conclusion is that, the ServiceListener only works for those bundles that have no “connection” (import) with Bundle3. Is this true? If this is true, how can I get the reference and cast to the service in order to call it without using imports? Note: In an attempt to solve the problem I did the following: in the serviceChanged I called another bundle3 class giving it the event in order to remove the import from activator class, and move it to the other class. But serviceChanged did not detects the Service1 too. It seems that if the (client) bundle project has an import for some service bundles those bundles are not “detected” in the serviceChanged method. Thank you Alex
