Package org.apache.druid.sql.hook

Class DruidHookDispatcher

java.lang.Object

org.apache.druid.sql.hook.DruidHookDispatcher

public class DruidHookDispatcher
extends Object

Dispatcher for Druid hooks. A single instance should live in the system and be used to dispatch hooks. Usual way to dispatch should be via PlannerContext.dispatchHook(HookKey, Object). Access to this class is also possible thru DruidConnectionExtras.

Constructor Summary

Constructors

Constructor	Description
DruidHookDispatcher()

Method Summary

Modifier and Type	Method	Description
<T> void	dispatch(DruidHook.HookKey<T> key, T object)
void	register(DruidHook.HookKey<?> label, DruidHook<?> hook)
void	unregister(DruidHook.HookKey<?> key, DruidHook<?> hook)
<T> Closeable	withHook(DruidHook.HookKey<T> key, DruidHook<T> hook)

Methods inherited from class java.lang.Object

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

Constructor Details

DruidHookDispatcher

@Inject
public DruidHookDispatcher()

Method Details

register

public void register(DruidHook.HookKey<?> label,
 DruidHook<?> hook)

unregister

public void unregister(DruidHook.HookKey<?> key,
 DruidHook<?> hook)

withHook

public <T> Closeable withHook(DruidHook.HookKey<T> key,
 DruidHook<T> hook)

dispatch

public <T> void dispatch(DruidHook.HookKey<T> key,
 T object)