io.druid.query

Class NoopQueryWatcher

java.lang.Object

io.druid.query.NoopQueryWatcher

All Implemented Interfaces:

QueryWatcher

public class NoopQueryWatcher
extends Object
implements QueryWatcher

Method Summary

Modifier and Type	Method and Description
static NoopQueryWatcher	instance()
void	registerQuery(Query query, com.google.common.util.concurrent.ListenableFuture future) QueryRunners must use this method to register any pending queries.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

instance

public static NoopQueryWatcher instance()

registerQuery

public void registerQuery(Query query,
                          com.google.common.util.concurrent.ListenableFuture future)

Description copied from interface: QueryWatcher

QueryRunners must use this method to register any pending queries. The given future may have cancel(true) called at any time, if cancellation of this query has been requested.

Specified by:

registerQuery in interface QueryWatcher

Parameters:

query - a query, which may be a subset of a larger query, as long as the underlying queryId is unchanged

future - the future holding the execution status of the query