Package io.deephaven.engine.table.impl.util.copy

Interface CopyKernel

All Known Implementing Classes:

BooleanCopyKernel, ByteCopyKernel, CharCopyKernel, DoubleCopyKernel, FloatCopyKernel, IntCopyKernel, LongCopyKernel, ObjectCopyKernel, ShortCopyKernel

public interface CopyKernel

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static class	CopyKernel.Utils

Method Summary

Modifier and Type	Method	Description
<T extends Any> void	conditionalCopy(WritableChunk<T> output, Object baseInput, Object overInput, long[] useOverInput, int srcOffset, int dstOffset, int length)	Copy values from baseInput / overInput into output.
static CopyKernel	makeCopyKernel(ChunkType chunkType)

Method Details

makeCopyKernel

static CopyKernel makeCopyKernel(ChunkType chunkType)

conditionalCopy

<T extends Any> void conditionalCopy(WritableChunk<T> output,
 Object baseInput,
 Object overInput,
 long[] useOverInput,
 int srcOffset,
 int dstOffset,
 int length)

Copy values from baseInput / overInput into output.

Pseudo-implementation: output[i] = useOverInput.forBit(i) ? overInput[i] : baseInput[i];

Note that useOverInput should cover the same data range as baseInput such that useOverInput.length == (overInput.length + 63) / 64 is true.

Parameters:

output - the output chunk

baseInput - the input array to use when bit in useOverInput is zero (array)

overInput - the input array to use when bit in useOverInput is one (array)

useOverInput - the bitset array to indicate whether to use baseInput or overInput for each element

srcOffset - the offset in baseInput/overInput

dstOffset - the offset in output

length - the number of elements to copy