Package io.deephaven.chunk.util.hashing

Class ObjectChunkHasher

java.lang.Object

io.deephaven.chunk.util.hashing.ObjectChunkHasher

All Implemented Interfaces:

ChunkHasher

public class ObjectChunkHasher
extends Object
implements ChunkHasher

Field Summary

Fields

Modifier and Type	Field	Description
static ObjectChunkHasher	INSTANCE

Constructor Summary

Constructors

Constructor	Description
ObjectChunkHasher()

Method Summary

Modifier and Type	Method	Description
void	hashInitial(Chunk<Values> values, WritableIntChunk<HashCodes> destination)	Called for the first (or only) hash value, sets the hash codes in destination corresponding to values.
int	hashInitial(Object value)	Hash a boxed object.
static int	hashInitialSingle(Object value)
int	hashUpdate(int existing, Object value)	Update a hash for a boxed object.
void	hashUpdate(Chunk<Values> values, WritableIntChunk<HashCodes> destination)	Called for subsequent hash values, updates the hash codes in destination corresponding to values.
static int	hashUpdateSingle(int existing, Object newValue)

Methods inherited from class java.lang.Object

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

Field Details

INSTANCE

public static ObjectChunkHasher INSTANCE

Constructor Details

ObjectChunkHasher

public ObjectChunkHasher()

Method Details

hashInitialSingle

public static int hashInitialSingle(Object value)

hashUpdateSingle

public static int hashUpdateSingle(int existing,
 Object newValue)

hashInitial

public int hashInitial(Object value)

Description copied from interface: ChunkHasher

Hash a boxed object.

Specified by:

hashInitial in interface ChunkHasher

Parameters:

value - the boxed object to hash

Returns:

the hashcode, as if you called the chunked version of this function

hashUpdate

public int hashUpdate(int existing,
 Object value)

Description copied from interface: ChunkHasher

Update a hash for a boxed object.

Specified by:

hashUpdate in interface ChunkHasher

Parameters:

existing - the existing hashcode

value - the boxed object to add to the hash code

Returns:

the hashcode, as if you called the chunked version of this function

hashInitial

public void hashInitial(Chunk<Values> values,
 WritableIntChunk<HashCodes> destination)

Description copied from interface: ChunkHasher

Called for the first (or only) hash value, sets the hash codes in destination corresponding to values.

Specified by:

hashInitial in interface ChunkHasher

Parameters:

values - the values to hash

destination - the chunk to write hash values into

hashUpdate

public void hashUpdate(Chunk<Values> values,
 WritableIntChunk<HashCodes> destination)

Description copied from interface: ChunkHasher

Called for subsequent hash values, updates the hash codes in destination corresponding to values.

Specified by:

hashUpdate in interface ChunkHasher

Parameters:

values - the values to hash

destination - the chunk to update hash values into