Module org.elasticsearch.compute

Package org.elasticsearch.compute.aggregation.blockhash

Class HashImplFactory

java.lang.Object

org.elasticsearch.compute.aggregation.blockhash.HashImplFactory

public class HashImplFactory
extends Object

A factory for constructing concrete Hash implementations.

The specific implementation returned by this factory is chosen once at class initialization time and remains fixed for the lifetime of the JVM. All factory methods will therefore consistently return instances of the same concrete implementation type.

Field Summary

Fields

Modifier and Type	Field	Description
static final boolean	SWISS_HASH_AVAILABLE

Method Summary

Modifier and Type	Method	Description
static BytesRefHashTable	newBytesRefHash(BlockFactory bf)	Creates a new BytesRefHashTable.
static LongHashTable	newLongHash(BigArrays bigArrays)	Creates a new LongHashTable using only a BigArrays for memory accounting.
static LongHashTable	newLongHash(BlockFactory bf)	Creates a new LongHashTable.
static LongLongHashTable	newLongLongHash(BlockFactory bf)	Creates a new LongLongHashTable.

Methods inherited from class java.lang.Object

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

Field Details

SWISS_HASH_AVAILABLE

public static final boolean SWISS_HASH_AVAILABLE

Method Details

newLongHash

public static LongHashTable newLongHash(BlockFactory bf)

Creates a new LongHashTable.

newLongHash

public static LongHashTable newLongHash(BigArrays bigArrays)

Creates a new LongHashTable using only a BigArrays for memory accounting. Used by aggregator state classes that don't have a BlockFactory in scope.

newLongLongHash

public static LongLongHashTable newLongLongHash(BlockFactory bf)

Creates a new LongLongHashTable.

newBytesRefHash

public static BytesRefHashTable newBytesRefHash(BlockFactory bf)

Creates a new BytesRefHashTable.