Package io.deephaven.engine.table.impl.sources

Class SingleValueObjectColumnSource<DATA_TYPE>

java.lang.Object

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

io.deephaven.engine.table.impl.sources.SingleValueObjectColumnSource<DATA_TYPE>

All Implemented Interfaces:

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

public class SingleValueObjectColumnSource<DATA_TYPE>
extends AbstractColumnSource<DATA_TYPE>
implements ImmutableColumnSourceGetDefaults.ForObject<DATA_TYPE>

ColumnSource implementation for columns of a single unique value.

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.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
SingleValueObjectColumnSource(DATA_TYPE value)

Method Summary

Modifier and Type	Method	Description
DATA_TYPE	get(long rowKey)	Get the value from the source.
void	startTrackingPrevValues()	ColumnSource implementations that track previous values have the option to not actually start tracking previous values until this method is called.

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

allowsReinterpret, defaultFillChunk, defaultFillPrevChunk, doReinterpret, estimatePushdownFilterCost, fillChunk, fillPrevChunk, getComponentType, getPrevSource, getType, makePushdownFilterContext, match, pushdownFilter, pushdownManager, 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

fillChunk

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, 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, makeFillContext, 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

SingleValueObjectColumnSource

public SingleValueObjectColumnSource(DATA_TYPE value)

Method Details

get

public DATA_TYPE 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<DATA_TYPE>

Parameters:

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

Returns:

the value at the rowKey, potentially null.

startTrackingPrevValues

public void startTrackingPrevValues()

Description copied from interface: ColumnSource

ColumnSource implementations that track previous values have the option to not actually start tracking previous values until this method is called. This is an option, not an obligation: some simple ColumnSource implementations (like TSingleValueSource for various T) always track previous values; other implementations (like PrevColumnSource) never do; some (like TArrayColumnSource) only start tracking once this method is called. An immutable column source can not have distinct prev values; therefore it is implemented as a no-op.

Specified by:

startTrackingPrevValues in interface ColumnSource<DATA_TYPE>