com.hazelcast.map.impl.querycache.event.sequence

Class DefaultPartitionSequencer

java.lang.Object

com.hazelcast.map.impl.querycache.event.sequence.DefaultPartitionSequencer

All Implemented Interfaces:

PartitionSequencer

public class DefaultPartitionSequencer
extends Object
implements PartitionSequencer

Default implementation of PartitionSequencer.

See Also:

PartitionSequencer

Constructor Summary

Constructors

Constructor and Description
DefaultPartitionSequencer()

Method Summary

Modifier and Type	Method and Description
boolean	compareAndSetSequence(long expect, long update) Atomically sets the value of sequence number for the partition.
long	getSequence() Returns current sequence number of the partition.
long	nextSequence() Returns next number in sequence for the partition.
void	reset() Resets PartitionSequencer.
void	setSequence(long update) Sets the current sequence number for the partition.

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultPartitionSequencer

public DefaultPartitionSequencer()

Method Detail

nextSequence

public long nextSequence()

Description copied from interface: PartitionSequencer

Returns next number in sequence for the partition.

Specified by:

nextSequence in interface PartitionSequencer

Returns:

next number in sequence.

setSequence

public void setSequence(long update)

Description copied from interface: PartitionSequencer

Sets the current sequence number for the partition.

Specified by:

setSequence in interface PartitionSequencer

Parameters:

update - new sequence number.

compareAndSetSequence

public boolean compareAndSetSequence(long expect,
                                     long update)

Description copied from interface: PartitionSequencer

Atomically sets the value of sequence number for the partition.

Specified by:

compareAndSetSequence in interface PartitionSequencer

Parameters:

expect - the expected sequence.

update - the new sequence.

Returns:

true if Compare-and-Set operation is successful, otherwise returns false.

getSequence

public long getSequence()

Description copied from interface: PartitionSequencer

Returns current sequence number of the partition.

Specified by:

getSequence in interface PartitionSequencer

Returns:

current sequence number.

reset

public void reset()

Description copied from interface: PartitionSequencer

Resets PartitionSequencer. After this call returns sequence generation will be start from zero.

Specified by:

reset in interface PartitionSequencer