Package org.apache.bookkeeper.common.util

Interface Watcher<T>

All Known Implementing Classes:
LongPollReadEntryProcessorV3
public interface Watcher<T>
A class can implement the Watcher interface when it wants to be informed of one-time changes in watchable objects.

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    update(T value)
    This method is called whenever the watched object is changed.

  • Method Details

    • update

      void update(T value)
      This method is called whenever the watched object is changed. An application calls an Watchable object's notifyWatchers method to have all the object's watchers notified of the change.
      Parameters:
      value - the updated value of a watchable