Package io.deephaven.extensions.arrow.sources

Class ArrowStringColumnSource

java.lang.Object

io.deephaven.engine.table.impl.AbstractColumnSource<T>

io.deephaven.extensions.arrow.sources.AbstractArrowColumnSource<String>

io.deephaven.extensions.arrow.sources.ArrowStringColumnSource

All Implemented Interfaces:

ChunkSource<Values>, ChunkSource.WithPrev<Values>, ColumnSource<String>, ElementSource<String>, FillContextMaker, GetContextMaker, ColumnSourceGetDefaults.ForObject<String>, DefaultChunkSource<Values>, DefaultChunkSource.WithPrev<Values>, ImmutableColumnSource<String>, ImmutableColumnSourceGetDefaults.ForObject<String>, Releasable, TupleExporter<String>, TupleSource<String>

public class ArrowStringColumnSource
extends AbstractArrowColumnSource<String>
implements ImmutableColumnSourceGetDefaults.ForObject<String>

Arrow Vector: VarCharVector Deephaven Type: java.lang.String

Nested Class Summary

Nested classes/interfaces inherited from class io.deephaven.engine.table.impl.AbstractColumnSource

AbstractColumnSource.DefaultedImmutable<DATA_TYPE>, AbstractColumnSource.DefaultedMutable<DATA_TYPE>

Nested classes/interfaces inherited from interface io.deephaven.engine.table.ChunkSource

ChunkSource.FillContext, ChunkSource.GetContext, ChunkSource.WithPrev<ATTR extends Any>

Nested classes/interfaces inherited from interface io.deephaven.engine.table.impl.DefaultChunkSource

DefaultChunkSource.SupportsContiguousGet<ATTR extends Any>, DefaultChunkSource.WithPrev<ATTR extends Any>

Nested classes/interfaces inherited from interface io.deephaven.engine.table.TupleExporter

TupleExporter.ExportElementFunction<TUPLE_TYPE>

Field Summary

Fields inherited from class io.deephaven.extensions.arrow.sources.AbstractArrowColumnSource

arrowHelper, bitCount, field, highBit

Fields inherited from class io.deephaven.engine.table.impl.AbstractColumnSource

componentType, type, updateGraph, USE_RANGES_AVERAGE_RUN_LENGTH

Fields inherited from interface io.deephaven.engine.table.ChunkSource

DEFAULT_FILL_INSTANCE, ZERO_LENGTH_CHUNK_SOURCE_ARRAY

Fields inherited from interface io.deephaven.engine.table.ChunkSource.WithPrev

ZERO_LENGTH_CHUNK_SOURCE_WITH_PREV_ARRAY

Fields inherited from interface io.deephaven.engine.table.ColumnSource

ZERO_LENGTH_COLUMN_SOURCE_ARRAY

Constructor Summary

Constructors

Constructor	Description
ArrowStringColumnSource(int highBit, @NotNull org.apache.arrow.vector.types.pojo.Field field, @NotNull ArrowWrapperTools.ArrowTableContext arrowTableContext)

Method Summary

Modifier and Type	Method	Description
void	fillChunk(@NotNull ChunkSource.FillContext context, @NotNull WritableChunk<? super Values> destination, @NotNull RowSequence rowSequence)	Populates the given destination chunk with data corresponding to the keys from the given RowSequence.
final String	get(long rowKey)	Get the value from the source.

Methods inherited from class io.deephaven.extensions.arrow.sources.AbstractArrowColumnSource

fillChunk, getBlockNo, getPositionInBlock, makeFillContext

Methods inherited from class io.deephaven.engine.table.impl.AbstractColumnSource

allowsReinterpret, defaultFillChunk, defaultFillPrevChunk, doReinterpret, fillPrevChunk, getComponentType, getPrevSource, getType, match, reinterpret

Methods inherited from class java.lang.Object

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

Methods inherited from interface io.deephaven.engine.table.ChunkSource.WithPrev

fillPrevChunk

Methods inherited from interface io.deephaven.engine.table.ColumnSource

allowsReinterpret, cast, cast, cast, cast, createPreviousTuple, createTuple, createTupleFromValues, exportAllTo, exportElement, exportElement, getChunkType, getComponentType, getPrevSource, getType, isStateless, match, reinterpret, releaseCachedResources, startTrackingPrevValues, tupleLength

Methods inherited from interface io.deephaven.engine.table.impl.ColumnSourceGetDefaults.ForObject

getBoolean, getByte, getChar, getDouble, getFloat, getInt, getLong, getShort

Methods inherited from interface io.deephaven.engine.table.impl.DefaultChunkSource

getChunk, getChunk, getChunkByFilling, makeGetContext

Methods inherited from interface io.deephaven.engine.table.impl.DefaultChunkSource.WithPrev

getPrevChunk, getPrevChunk, getPrevChunkByFilling

Methods inherited from interface io.deephaven.engine.table.FillContextMaker

makeFillContext

Methods inherited from interface io.deephaven.engine.table.GetContextMaker

makeGetContext

Methods inherited from interface io.deephaven.engine.table.impl.ImmutableColumnSource

getPrev, getPrevBoolean, getPrevByte, getPrevChar, getPrevDouble, getPrevFloat, getPrevInt, getPrevLong, getPrevShort, isImmutable

Methods inherited from interface io.deephaven.engine.table.TupleExporter

exportAllReinterpretedTo, exportAllReinterpretedTo, exportAllTo, exportElementReinterpreted

Methods inherited from interface io.deephaven.engine.table.TupleSource

createTupleFromReinterpretedValues

Constructor Details

ArrowStringColumnSource

public ArrowStringColumnSource(int highBit,
 @NotNull
 @NotNull org.apache.arrow.vector.types.pojo.Field field,
 @NotNull ArrowWrapperTools.ArrowTableContext arrowTableContext)

Method Details

fillChunk

public void fillChunk(@NotNull ChunkSource.FillContext context,
 @NotNull
 @NotNull WritableChunk<? super Values> destination,
 @NotNull
 @NotNull RowSequence rowSequence)

Description copied from interface: ChunkSource

Populates the given destination chunk with data corresponding to the keys from the given RowSequence.

Specified by:

fillChunk in interface ChunkSource<Values>

Overrides:

fillChunk in class AbstractColumnSource<String>

Parameters:

context - A context containing all mutable/state related data used in retrieving the Chunk.

destination - The chunk to be populated according to rowSequence. No assumptions shall be made about the size of the chunk shall be made. The chunk will be populated from position [0,rowSequence.size()).

rowSequence - An RowSequence representing the keys to be fetched

get

public final String get(long rowKey)

Description copied from interface: ElementSource

Get the value from the source. This may return boxed values for basic types. RowKeys that are not present are undefined.

Specified by:

get in interface ElementSource<String>

Parameters:

rowKey - the location in key space to get the value from.

Returns:

the value at the rowKey, potentially null.