com.xxdb.route

Class HashDomain

java.lang.Object

com.xxdb.route.HashDomain

All Implemented Interfaces:

Domain

public class HashDomain
extends Object
implements Domain

Constructor Summary

Constructors

Constructor and Description
HashDomain(int buckets, Entity.DATA_TYPE type, Entity.DATA_CATEGORY cat)

Method Summary

Modifier and Type	Method and Description
int	getPartitionKey(Scalar partitionCol)
List<Integer>	getPartitionKeys(Vector partitionCol) Given the values of a partition column, get the keys of partitions those values belong to.

Methods inherited from class java.lang.Object

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

Constructor Detail

HashDomain

public HashDomain(int buckets,
                  Entity.DATA_TYPE type,
                  Entity.DATA_CATEGORY cat)

Method Detail

getPartitionKeys

public List<Integer> getPartitionKeys(Vector partitionCol)

Description copied from interface: Domain

Given the values of a partition column, get the keys of partitions those values belong to.

Specified by:

getPartitionKeys in interface Domain

Parameters:

partitionCol - a list of partition column values

Returns:

a list of partition keys

getPartitionKey

public int getPartitionKey(Scalar partitionCol)

Specified by:

getPartitionKey in interface Domain