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java.lang.Object org.apache.hadoop.service.ServiceOperations.ServiceListeners
public static class ServiceOperations.ServiceListeners
Class to manage a list of ServiceStateChangeListener
instances,
including a notification loop that is robust against changes to the list
during the notification process.
Constructor Summary | |
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ServiceOperations.ServiceListeners()
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Method Summary | |
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void |
add(ServiceStateChangeListener l)
Thread-safe addition of a new listener to the end of a list. |
void |
notifyListeners(Service service)
Change to a new state and notify all listeners. |
boolean |
remove(ServiceStateChangeListener l)
Remove any registration of a listener from the listener list. |
void |
reset()
Reset the listener list |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public ServiceOperations.ServiceListeners()
Method Detail |
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public void add(ServiceStateChangeListener l)
l
- listenerpublic boolean remove(ServiceStateChangeListener l)
l
- listener
public void reset()
public void notifyListeners(Service service)
service
- the service that has changed state
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