org.apache.hadoop.hbase.coprocessor

Class CoprocessorHost.ObserverOperationWithoutResult<O>

java.lang.Object

org.apache.hadoop.hbase.coprocessor.ObserverContextImpl<E>

org.apache.hadoop.hbase.coprocessor.CoprocessorHost.ObserverOperation<O>

org.apache.hadoop.hbase.coprocessor.CoprocessorHost.ObserverOperationWithoutResult<O>

All Implemented Interfaces:

ObserverContext<E>

Direct Known Subclasses:

MasterCoprocessorHost.MasterObserverOperation, RegionCoprocessorHost.BulkLoadObserverOperation, RegionCoprocessorHost.RegionObserverOperationWithoutResult, RegionServerCoprocessorHost.RegionServerObserverOperation, WALCoprocessorHost.WALObserverOperation

Enclosing class:

CoprocessorHost<C extends Coprocessor,E extends CoprocessorEnvironment<C>>

public abstract class CoprocessorHost.ObserverOperationWithoutResult<O>
extends CoprocessorHost.ObserverOperation<O>

Field Summary

Fields inherited from class org.apache.hadoop.hbase.coprocessor.CoprocessorHost.ObserverOperation

observerGetter

Constructor Summary

Constructors

Constructor and Description
ObserverOperationWithoutResult(CoprocessorHost.ObserverGetter<C,O> observerGetter)
ObserverOperationWithoutResult(CoprocessorHost.ObserverGetter<C,O> observerGetter, User user)
ObserverOperationWithoutResult(CoprocessorHost.ObserverGetter<C,O> observerGetter, User user, boolean bypassable)

Method Summary

Modifier and Type	Method and Description
protected abstract void	call(O observer)
(package private) void	callObserver() In case of coprocessors which have many kinds of observers (for eg, RegionCoprocessor has BulkLoadObserver, RegionObserver, etc), some implementations may not need all observers, in which case they will return null for that observer's getter.

Methods inherited from class org.apache.hadoop.hbase.coprocessor.CoprocessorHost.ObserverOperation

postEnvCall

Methods inherited from class org.apache.hadoop.hbase.coprocessor.ObserverContextImpl

bypass, createAndPrepare, getCaller, getEnvironment, isBypassable, prepare, shouldBypass

Methods inherited from class java.lang.Object

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

Constructor Detail

ObserverOperationWithoutResult

public ObserverOperationWithoutResult(CoprocessorHost.ObserverGetter<C,O> observerGetter)

ObserverOperationWithoutResult

public ObserverOperationWithoutResult(CoprocessorHost.ObserverGetter<C,O> observerGetter,
                                      User user)

ObserverOperationWithoutResult

public ObserverOperationWithoutResult(CoprocessorHost.ObserverGetter<C,O> observerGetter,
                                      User user,
                                      boolean bypassable)

Method Detail

call

protected abstract void call(O observer)
                      throws IOException

Throws:

IOException

callObserver

void callObserver()
           throws IOException

In case of coprocessors which have many kinds of observers (for eg, RegionCoprocessor has BulkLoadObserver, RegionObserver, etc), some implementations may not need all observers, in which case they will return null for that observer's getter. We simply ignore such cases.

Specified by:

callObserver in class CoprocessorHost.ObserverOperation<O>

Throws:

IOException