com.hazelcast.core

Interface PartitionService

public interface PartitionService

PartitionService allows to query Partitions and attach/detach MigrationListeners to listen partition migration events.

See Also:

Partition, MigrationListener

Method Summary

Modifier and Type	Method and Description
String	addMigrationListener(MigrationListener migrationListener)
Partition	getPartition(Object key) Returns partition which given key belongs to.
Set<Partition>	getPartitions() Returns all partitions.
String	randomPartitionKey() Generates a random partition key.
boolean	removeMigrationListener(String registrationId)

Method Detail

getPartitions

Set<Partition> getPartitions()

Returns all partitions.

Returns:

all partitions

getPartition

Partition getPartition(Object key)

Returns partition which given key belongs to.

Parameters:

key - key

Returns:

partition which given key belongs to

randomPartitionKey

String randomPartitionKey()

Generates a random partition key. This is useful if you want to partition data in the same partition, but don't care which partition it is going to be. The returned value will never be null.

Returns:

the random partition key.

addMigrationListener

String addMigrationListener(MigrationListener migrationListener)

Parameters:

migrationListener - listener

Returns:

returns registration id.

removeMigrationListener

boolean removeMigrationListener(String registrationId)

Parameters:

registrationId - Id of listener registration.

Returns:

true if registration is removed, false otherwise