com.hazelcast.queue.impl.operations
Class ClearOperation

java.lang.Object
  com.hazelcast.spi.Operation
      com.hazelcast.queue.impl.operations.QueueOperation
          com.hazelcast.queue.impl.operations.QueueBackupAwareOperation
              com.hazelcast.queue.impl.operations.ClearOperation

All Implemented Interfaces:

DataSerializable, IdentifiedDataSerializable, BackupAwareOperation, RemotePropagatable<Operation>, Notifier, PartitionAwareOperation

public class ClearOperation
extends QueueBackupAwareOperation
implements Notifier

Clears items stored by Queue.

Field Summary

Fields inherited from class com.hazelcast.queue.impl.operations.QueueOperation

name, response

Constructor Summary

ClearOperation()

ClearOperation(String name)

Method Summary

void	afterRun()
Operation	getBackupOperation() Creates the BackupOperation responsible for making the backup.
int	getId() Returns type identifier for this class.
WaitNotifyKey	getNotifiedKey()
void	run()
boolean	shouldBackup() Checks if a backup needs to be made.
boolean	shouldNotify()

Methods inherited from class com.hazelcast.queue.impl.operations.QueueBackupAwareOperation

getAsyncBackupCount, getSyncBackupCount

Methods inherited from class com.hazelcast.queue.impl.operations.QueueOperation

beforeRun, getFactoryId, getName, getOrCreateContainer, getQueueService, getResponse, getServiceName, hasListener, publishEvent, readInternal, returnsResponse, writeInternal

Methods inherited from class com.hazelcast.spi.Operation

getCallerAddress, getCallerUuid, getCallId, getCallTimeout, getConnection, getExecutorName, getInvocationTime, getLogger, getNodeEngine, getPartitionId, getReplicaIndex, getResponseHandler, getService, getWaitTimeout, isUrgent, logError, onException, readData, setCallerUuid, setExecutorName, setNodeEngine, setPartitionId, setReplicaIndex, setResponseHandler, setService, setServiceName, setValidateTarget, setWaitTimeout, toString, validatesTarget, writeData

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.hazelcast.spi.PartitionAwareOperation

getPartitionId

Methods inherited from interface com.hazelcast.nio.serialization.DataSerializable

readData, writeData

Constructor Detail

ClearOperation

public ClearOperation()

ClearOperation

public ClearOperation(String name)

Method Detail

run

public void run()

Specified by:

run in class Operation

afterRun

public void afterRun()
              throws Exception

Overrides:

afterRun in class QueueOperation

Throws:

Exception

getBackupOperation

public Operation getBackupOperation()

Description copied from interface: BackupAwareOperation

Creates the BackupOperation responsible for making the backup.

Specified by:

getBackupOperation in interface BackupAwareOperation

Returns:

the created BackupOperation.

shouldBackup

public boolean shouldBackup()

Description copied from interface: BackupAwareOperation

Checks if a backup needs to be made.

If a call has not made any change, e.g. an AtomicLong increment with 0, no backup needs to be made.

Specified by:

shouldBackup in interface BackupAwareOperation

Returns:

true if a backup needs to be made, false otherwise.

shouldNotify

public boolean shouldNotify()

Specified by:

shouldNotify in interface Notifier

getNotifiedKey

public WaitNotifyKey getNotifiedKey()

Specified by:

getNotifiedKey in interface Notifier

getId

public int getId()

Description copied from interface: IdentifiedDataSerializable

Returns type identifier for this class. Id should be unique per DataSerializableFactory.

Specified by:

getId in interface IdentifiedDataSerializable

Returns:

type id