Package org.apache.drill.exec.expr.fn.impl

Class HashHelper

java.lang.Object

org.apache.drill.exec.expr.fn.impl.HashHelper

public class HashHelper
extends Object

Constructor Summary

Constructors

Constructor	Description
HashHelper()

Method Summary

Modifier and Type	Method	Description
static int	hash(ByteBuffer buf, int seed)	taken from mahout
static int	hash32(double val, long seed)
static int	hash32(float val, long seed)
static int	hash32(int start, int end, DrillBuf buffer, int seed)
static int	hash32(int val, long seed)
static int	hash32(long val, long seed)
static long	hash64(double val, long seed)
static long	hash64(float val, long seed)
static long	hash64(long val, long seed)
static long	hash64(long start, long end, DrillBuf buffer, long seed)

Methods inherited from class java.lang.Object

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

Constructor Details

HashHelper

public HashHelper()

Method Details

hash

public static int hash(ByteBuffer buf,
 int seed)

taken from mahout

hash32

public static int hash32(int val,
 long seed)

hash32

public static int hash32(long val,
 long seed)

hash32

public static int hash32(float val,
 long seed)

hash64

public static long hash64(float val,
 long seed)

hash64

public static long hash64(long val,
 long seed)

hash64

public static long hash64(double val,
 long seed)

hash64

public static long hash64(long start,
 long end,
 DrillBuf buffer,
 long seed)

hash32

public static int hash32(double val,
 long seed)

hash32

public static int hash32(int start,
 int end,
 DrillBuf buffer,
 int seed)