com.hazelcast.partition

Interface PartitioningStrategy<K>

Type Parameters:

K - key type

All Superinterfaces:

Serializable

All Known Implementing Classes:

DefaultPartitioningStrategy, StringAndPartitionAwarePartitioningStrategy, StringPartitioningStrategy

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public interface PartitioningStrategy<K>
extends Serializable

PartitioningStrategy allows keys to be located on the same member. This causes related data to be stored in the same location. (See data-affinity.)

Method Summary

Modifier and Type	Method and Description
Object	getPartitionKey(K key) Returns the key object that will be used by Hazelcast to specify the partition.

Method Detail

getPartitionKey

Object getPartitionKey(K key)

Returns the key object that will be used by Hazelcast to specify the partition.

Parameters:

key - actual key object used by Hazelcast to specify the partition

Returns:

the partition key object, or null to fallback to the default partition calculation