@ConsumerType @FunctionalInterface public interface UnfilteredServiceListener extends ServiceListener
ServiceEventlistener that does not filter based upon any filter string specified to
BundleContext.addServiceListener(ServiceListener, String). Using an
UnfilteredServiceListenerand specifying a filter string to
BundleContext.addServiceListener(ServiceListener, String)allows the listener to receive all
ServiceEventobjects while still advising
ListenerHookimplementation of the service interests in the filter string. For example, an implementation of Declarative Services would add an
UnfilteredServiceListenerwith a filter string listing all the services referenced by all the service components. The Declarative Services implementation would receive all
ServiceEventobjects for internal processing and a Remote Services discovery service implementation can observe the service interests of the service components using a
ListenerHook. When the set of service components being processed changes, the Declarative Services implementation would re-add the
UnfilteredServiceListenerwith an updated filter string.
ServiceEvent is fired, it is synchronously delivered to an
UnfilteredServiceListener. The Framework may deliver
ServiceEvent objects to an
UnfilteredServiceListener out of
order and may concurrently call and/or reenter an
UnfilteredServiceListener object is registered with the Framework
UnfilteredServiceListener objects are called with a
ServiceEvent object when a service is registered, modified, or is in
the process of unregistering.
ServiceEvent object delivery to
objects are not filtered by the filter specified when the listener was
registered. If the Java Runtime Environment supports permissions, then some
filtering is done.
ServiceEvent objects are only delivered to the
listener if the bundle which defines the listener object's class has the
ServicePermission to get the service using at least one
of the named classes under which the service was registered.
Copyright © OSGi Alliance (2000, 2020). All Rights Reserved. Licensed under the OSGi Specification License, Version 2.0