io.prestosql.operator

Class BucketPartitionFunction

java.lang.Object

io.prestosql.operator.BucketPartitionFunction

All Implemented Interfaces:

PartitionFunction

public class BucketPartitionFunction
extends Object
implements PartitionFunction

Constructor Summary

Constructors

Constructor and Description
BucketPartitionFunction(BucketFunction bucketFunction, int[] bucketToPartition)

Method Summary

Modifier and Type	Method and Description
int	getPartition(Page functionArguments, int position)
int	getPartitionCount()

Methods inherited from class java.lang.Object

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

Constructor Detail

BucketPartitionFunction

public BucketPartitionFunction(BucketFunction bucketFunction,
                               int[] bucketToPartition)

Method Detail

getPartitionCount

public int getPartitionCount()

Specified by:

getPartitionCount in interface PartitionFunction

getPartition

public int getPartition(Page functionArguments,
                        int position)

Specified by:

getPartition in interface PartitionFunction

Parameters:

functionArguments - the arguments to bucketing function in order (no extra columns)