Package io.deephaven.extensions.barrage.chunk

Class ShortChunkWriter<SOURCE_CHUNK_TYPE extends Chunk<Values>>

java.lang.Object

io.deephaven.extensions.barrage.chunk.BaseChunkWriter<SOURCE_CHUNK_TYPE>

io.deephaven.extensions.barrage.chunk.ShortChunkWriter<SOURCE_CHUNK_TYPE>

All Implemented Interfaces:

ChunkWriter<SOURCE_CHUNK_TYPE>

public class ShortChunkWriter<SOURCE_CHUNK_TYPE extends Chunk<Values>>
extends BaseChunkWriter<SOURCE_CHUNK_TYPE>

Nested Class Summary

Nested classes/interfaces inherited from class io.deephaven.extensions.barrage.chunk.BaseChunkWriter

BaseChunkWriter.ChunkTransformer<SOURCE_CHUNK_TYPE extends Chunk<Values>>, BaseChunkWriter.SerContext

Nested classes/interfaces inherited from interface io.deephaven.extensions.barrage.chunk.ChunkWriter

ChunkWriter.BufferListener, ChunkWriter.Context, ChunkWriter.DrainableColumn, ChunkWriter.Factory, ChunkWriter.FieldNodeInfo, ChunkWriter.FieldNodeListener

Field Summary

Fields inherited from class io.deephaven.extensions.barrage.chunk.BaseChunkWriter

dhNullable, elementSize, fieldNullable, PADDING_BUFFER, REMAINDER_MOD_8_MASK

Constructor Summary

Constructors

Constructor	Description
ShortChunkWriter(@Nullable BaseChunkWriter.ChunkTransformer<SOURCE_CHUNK_TYPE> transformer, @NotNull Supplier<SOURCE_CHUNK_TYPE> emptyChunkSupplier, boolean fieldNullable)

Method Summary

Modifier and Type	Method	Description
static WritableShortChunk<Values>	chunkUnboxer(@NotNull ObjectChunk<Short,Values> sourceValues)
protected int	computeNullCount(@NotNull ChunkWriter.Context context, @NotNull RowSequence subset)	Compute the number of nulls in the subset.
static ShortChunkWriter<ShortChunk<Values>>	getIdentity(boolean isNullable)
ChunkWriter.DrainableColumn	getInputStream(@NotNull ChunkWriter.Context context, @Nullable RowSet subset, @NotNull BarrageOptions options)	Get an input stream optionally position-space filtered using the provided RowSet.
static ChunkWriter<ObjectChunk<Short,Values>>	makeBoxed(@NotNull ChunkWriter<ShortChunk<Values>> innerWriter)
protected void	writeValidityBufferInternal(@NotNull ChunkWriter.Context context, @NotNull RowSequence subset, @NotNull BaseChunkWriter.SerContext serContext)	Update the validity buffer for the subset.

Methods inherited from class io.deephaven.extensions.barrage.chunk.BaseChunkWriter

getEmptyInputStream, getNumLongsForBitPackOfSize, getValidityMapSerializationSizeFor, isFieldNullable, makeContext

Methods inherited from class java.lang.Object

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

Constructor Details

ShortChunkWriter

public ShortChunkWriter(@Nullable
 @Nullable BaseChunkWriter.ChunkTransformer<SOURCE_CHUNK_TYPE> transformer,
 @NotNull
 @NotNull Supplier<SOURCE_CHUNK_TYPE> emptyChunkSupplier,
 boolean fieldNullable)

Method Details

getIdentity

public static ShortChunkWriter<ShortChunk<Values>> getIdentity(boolean isNullable)

chunkUnboxer

public static WritableShortChunk<Values> chunkUnboxer(@NotNull
 @NotNull ObjectChunk<Short,Values> sourceValues)

makeBoxed

public static ChunkWriter<ObjectChunk<Short,Values>> makeBoxed(@NotNull
 @NotNull ChunkWriter<ShortChunk<Values>> innerWriter)

getInputStream

public ChunkWriter.DrainableColumn getInputStream(@NotNull
 @NotNull ChunkWriter.Context context,
 @Nullable
 @Nullable RowSet subset,
 @NotNull
 @NotNull BarrageOptions options)
                                           throws IOException

Description copied from interface: ChunkWriter

Get an input stream optionally position-space filtered using the provided RowSet.

Parameters:

context - the chunk writer context holding the data to be drained to the client

subset - if provided, is a position-space filter of source data

options - options for writing to the stream

Returns:

a single-use DrainableColumn ready to be drained via grpc

Throws:

IOException

computeNullCount

protected int computeNullCount(@NotNull
 @NotNull ChunkWriter.Context context,
 @NotNull
 @NotNull RowSequence subset)

Description copied from class: BaseChunkWriter

Compute the number of nulls in the subset.

Specified by:

computeNullCount in class BaseChunkWriter<SOURCE_CHUNK_TYPE extends Chunk<Values>>

Parameters:

context - the context for the chunk

subset - the subset of rows to consider

Returns:

the number of nulls in the subset

writeValidityBufferInternal

protected void writeValidityBufferInternal(@NotNull
 @NotNull ChunkWriter.Context context,
 @NotNull
 @NotNull RowSequence subset,
 @NotNull
 @NotNull BaseChunkWriter.SerContext serContext)

Description copied from class: BaseChunkWriter

Update the validity buffer for the subset.

Specified by:

writeValidityBufferInternal in class BaseChunkWriter<SOURCE_CHUNK_TYPE extends Chunk<Values>>

Parameters:

context - the context for the chunk

subset - the subset of rows to consider

serContext - the serialization context