org.apache.druid.query.groupby.epinephelinae

Class Groupers

java.lang.Object

org.apache.druid.query.groupby.epinephelinae.Groupers

public class Groupers
extends Object

Method Summary

Modifier and Type	Method and Description
static AggregateResult	dictionaryFull(int count)
static ByteBuffer	getSlice(ByteBuffer buffer, int sliceSize, int i)
static int	hashObject(Object obj)
static AggregateResult	hashTableFull(int count)
static int	smear(int hashCode) This method was rewritten in Java from an intermediate step of the Murmur hash function in https://github.com/aappleby/smhasher/blob/master/src/MurmurHash3.cpp, which contained the following header: MurmurHash3 was written by Austin Appleby, and is placed in the public domain.
static int[]	writeAggregationRows(int[] scratch, int start, int end) Write ints from "start" to "end" into "scratch", if start != 0.

Methods inherited from class java.lang.Object

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

Method Detail

smear

public static int smear(int hashCode)

This method was rewritten in Java from an intermediate step of the Murmur hash function in https://github.com/aappleby/smhasher/blob/master/src/MurmurHash3.cpp, which contained the following header: MurmurHash3 was written by Austin Appleby, and is placed in the public domain. The author hereby disclaims copyright to this source code.

dictionaryFull

public static AggregateResult dictionaryFull(int count)

hashTableFull

public static AggregateResult hashTableFull(int count)

hashObject

public static int hashObject(Object obj)

getSlice

public static ByteBuffer getSlice(ByteBuffer buffer,
                                  int sliceSize,
                                  int i)

writeAggregationRows

@Nullable
public static int[] writeAggregationRows(int[] scratch,
                                                   int start,
                                                   int end)

Write ints from "start" to "end" into "scratch", if start != 0. Otherwise, return null.