org.apache.lucene.monitor

## Interface MonitorUpdateListener

-     public interface MonitorUpdateListener

  For reporting events on a Monitor's query index

- - ### Method Summary

    All Methods Instance Methods Default Methods
    Modifier and Type | Method and Description
    --- | ---
    `default void` | `afterClear()` Called after all queries have been removed from the Monitor's query index
    `default void` | `afterDelete(List<String> queryIds)` Called after a set of queries have been deleted from the Monitor's query index
    `default void` | `afterUpdate(List<MonitorQuery> updates)` Called after a set of queries have been added to the Monitor's query index
    `default void` | `onPurge()` Called after the Monitor's query cache has been purged of deleted queries
    `default void` | `onPurgeError(Throwable t)` Called if there was an error removing deleted queries from the Monitor's query cache

- - ### Method Detail

    - #### afterUpdate

          default void afterUpdate(List<MonitorQuery> updates)

      Called after a set of queries have been added to the Monitor's query index

    - #### afterDelete

          default void afterDelete(List<String> queryIds)

      Called after a set of queries have been deleted from the Monitor's query index

    - #### afterClear

          default void afterClear()

      Called after all queries have been removed from the Monitor's query index

    - #### onPurge

          default void onPurge()

      Called after the Monitor's query cache has been purged of deleted queries

    - #### onPurgeError

          default void onPurgeError(Throwable t)

      Called if there was an error removing deleted queries from the Monitor's query cache

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