Package org.osgi.framework.hooks.service
Interface ListenerHook.ListenerInfo
- Enclosing interface:
- ListenerHook
@ProviderType
public static interface ListenerHook.ListenerInfo
Information about a Service Listener. This interface describes the bundle
which added the Service Listener and the filter with which it was added.
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Method Summary
Modifier and TypeMethodDescriptionboolean
Compares thisListenerInfo
to anotherListenerInfo
.Return the context of the bundle which added the listener.Return the filter string with which the listener was added.int
hashCode()
Returns the hash code for thisListenerInfo
.boolean
Return the state of the listener for this addition and removal life cycle.
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Method Details
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getBundleContext
BundleContext getBundleContext()Return the context of the bundle which added the listener.- Returns:
- The context of the bundle which added the listener.
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getFilter
String getFilter()Return the filter string with which the listener was added.- Returns:
- The filter string with which the listener was added. This may
be
null
if the listener was added without a filter.
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isRemoved
boolean isRemoved()Return the state of the listener for this addition and removal life cycle. Initially this method will returnfalse
indicating the listener has been added but has not been removed. After the listener has been removed, this method must always returntrue
.There is an extremely rare case in which removed notification to
ListenerHook
s can be made before added notification if two threads are racing to add and remove the same service listener. BecauseListenerHook
s are called synchronously during service listener addition and removal, the Framework cannot guarantee in-order delivery of added and removed notification for a given service listener. This method can be used to detect this rare occurrence.- Returns:
false
if the listener has not been removed,true
otherwise.
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equals
Compares thisListenerInfo
to anotherListenerInfo
. TwoListenerInfo
s are equals if they refer to the same listener for a given addition and removal life cycle. If the same listener is added again, it must have a differentListenerInfo
which is not equal to thisListenerInfo
. -
hashCode
int hashCode()Returns the hash code for thisListenerInfo
.
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