Package io.deephaven.chunk.util.hashing

Interface ToIntegerCast<T extends Any>

All Superinterfaces:

AutoCloseable, SafeCloseable, ToIntFunctor<T>

public interface ToIntegerCast<T extends Any>
extends ToIntFunctor<T>

Nested Class Summary

Nested classes/interfaces inherited from interface io.deephaven.chunk.util.hashing.ToIntFunctor

ToIntFunctor.Identity<T extends Any>

Method Summary

Modifier and Type	Method	Description
IntChunk<? extends T>	apply(Chunk<? extends T> input)	Apply this function to the input chunk, returning an output chunk.
static <T extends Any> void	castInto(Chunk<? extends T> src, WritableIntChunk<T> dst)	Cast src into dst, performing a raw (non-null-aware) widening or narrowing conversion.
static <T extends Any> void	castIntoNullAware(Chunk<? extends T> src, WritableIntChunk<T> dst)	Cast src into dst, mapping the source type's null sentinel to QueryConstants.NULL_INT.
static <T extends Any> ToIntFunctor<T>	makeToIntegerCast(ChunkType type, int size, int offset)	Create an IntFunctor that casts the values in an input chunk to an int.
static <T extends Any> ToIntFunctor<T>	makeToIntegerCastNullAware(ChunkType type, int size)	Create an IntFunctor that casts the values in an input chunk to an int, mapping the source type's null sentinel to QueryConstants.NULL_INT.

Methods inherited from interface io.deephaven.chunk.util.hashing.ToIntFunctor

close

Method Details

apply

IntChunk<? extends T> apply(Chunk<? extends T> input)

Description copied from interface: ToIntFunctor

Apply this function to the input chunk, returning an output chunk. The result is owned by this ToIntFunctor.

Specified by:

apply in interface ToIntFunctor<T extends Any>

Parameters:

input - the chunk to transform

Returns:

the result IntChunk

makeToIntegerCast

static <T extends Any> ToIntFunctor<T> makeToIntegerCast(ChunkType type,
 int size,
 int offset)

Create an IntFunctor that casts the values in an input chunk to an int. An optional offset is applied to each value after the cast.

Type Parameters:

T - the chunk's attribute

Parameters:

type - the type of chunk, must be an integral primitive type

size - the size of the largest chunk that can be cast by this functor

offset - an offset to add to each casted result

Returns:

a ToIntFunctor that can be applied to chunks of type in order to produce an IntChunk of values

makeToIntegerCastNullAware

static <T extends Any> ToIntFunctor<T> makeToIntegerCastNullAware(ChunkType type,
 int size)

Create an IntFunctor that casts the values in an input chunk to an int, mapping the source type's null sentinel to QueryConstants.NULL_INT.

Type Parameters:

T - the chunk's attribute

Parameters:

type - the type of chunk, must be an integral primitive type

size - the size of the largest chunk that can be cast by this functor

Returns:

a ToIntFunctor that can be applied to chunks of type in order to produce an IntChunk of values

castInto

static <T extends Any> void castInto(Chunk<? extends T> src,
 WritableIntChunk<T> dst)

Cast src into dst, performing a raw (non-null-aware) widening or narrowing conversion.

Type Parameters:

T - the chunk's attribute

Parameters:

src - the source chunk, must be an integral primitive type

dst - the destination chunk

castIntoNullAware

static <T extends Any> void castIntoNullAware(Chunk<? extends T> src,
 WritableIntChunk<T> dst)

Cast src into dst, mapping the source type's null sentinel to QueryConstants.NULL_INT.

Type Parameters:

T - the chunk's attribute

Parameters:

src - the source chunk, must be an integral primitive type

dst - the destination chunk