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

Class ColumnRegionObject.Constant<DATA_TYPE,ATTR extends Any>

java.lang.Object

io.deephaven.engine.table.impl.sources.regioned.GenericColumnRegionBase<ATTR>

io.deephaven.engine.table.impl.sources.regioned.ColumnRegionObject.Constant<DATA_TYPE,ATTR>

All Implemented Interfaces:

Page<ATTR>, Page.WithDefaultsForRepeatingValues<ATTR>, PagingChunkSource<ATTR>, ChunkSource<ATTR>, FillContextMaker, GetContextMaker, DefaultChunkSource<ATTR>, ColumnRegion<ATTR>, ColumnRegionObject<DATA_TYPE,ATTR>, ColumnRegionObject.SelfDictionaryRegion<DATA_TYPE,ATTR>, Releasable

Enclosing interface:

ColumnRegionObject<DATA_TYPE,ATTR extends Any>

public static final class ColumnRegionObject.Constant<DATA_TYPE,ATTR extends Any>
extends GenericColumnRegionBase<ATTR>
implements ColumnRegionObject.SelfDictionaryRegion<DATA_TYPE,ATTR>, Page.WithDefaultsForRepeatingValues<ATTR>

Nested Class Summary

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

ChunkSource.FillContext, ChunkSource.GetContext

Nested classes/interfaces inherited from interface io.deephaven.engine.table.impl.sources.regioned.ColumnRegion

ColumnRegion.Null<ATTR extends Any>

Nested classes/interfaces inherited from interface io.deephaven.engine.table.impl.sources.regioned.ColumnRegionObject

ColumnRegionObject.Constant<DATA_TYPE,ATTR extends Any>, ColumnRegionObject.DictionaryKeysWrapper, ColumnRegionObject.Null<DATA_TYPE,ATTR extends Any>, ColumnRegionObject.SelfDictionaryRegion<DATA_TYPE,ATTR extends Any>, ColumnRegionObject.StaticPageStore<DATA_TYPE,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.page.Page

Page.WithDefaults<ATTR extends Any>, Page.WithDefaultsForRepeatingValues<ATTR extends Any>

Field Summary

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

DEFAULT_FILL_INSTANCE, ZERO_LENGTH_CHUNK_SOURCE_ARRAY

Constructor Summary

Constructors

Constructor	Description
Constant(long pageMask, DATA_TYPE value)

Method Summary

Modifier and Type	Method	Description
void	fillChunkAppend(@NotNull ChunkSource.FillContext context, @NotNull WritableChunk<? super ATTR> destination, int length)	Appends the values repeating value length times to destination.
boolean	gatherDictionaryValuesRowSet(RowSet.SearchIterator keysToVisit, RowSequence.Iterator knownKeys, @NotNull RowSetBuilderSequential sequentialBuilder)	Optional method that should only be used on regions returned by ColumnRegionObject.getDictionaryValuesRegion().
ColumnRegionLong<DictionaryKeys>	getDictionaryKeysRegion()
DATA_TYPE	getObject(long elementIndex)	Get a single object from this region.

Methods inherited from class io.deephaven.engine.table.impl.sources.regioned.GenericColumnRegionBase

invalidate, mask, throwIfInvalidated

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.impl.sources.regioned.ColumnRegion

firstRowOffset, invalidate

Methods inherited from interface io.deephaven.engine.table.impl.sources.regioned.ColumnRegionObject

getChunkType, getObject

Methods inherited from interface io.deephaven.engine.table.impl.sources.regioned.ColumnRegionObject.SelfDictionaryRegion

getDictionaryValuesRegion, supportsDictionaryFormat

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

getChunk, getChunk, getChunkByFilling, makeGetContext

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.page.Page

advanceToNextPage, advanceToNextPage, advanceToNextPageAndGetPositionDistance, firstRow, getRowOffset

Methods inherited from interface io.deephaven.engine.page.Page.WithDefaultsForRepeatingValues

fillChunk, fillChunkAppend

Methods inherited from interface io.deephaven.engine.page.PagingChunkSource

makeFillContext, mask, maxRow

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

releaseCachedResources

Constructor Details

Constant

public Constant(long pageMask,
 DATA_TYPE value)

Method Details

getObject

public DATA_TYPE getObject(long elementIndex)

Description copied from interface: ColumnRegionObject

Get a single object from this region.

Specified by:

getObject in interface ColumnRegionObject<DATA_TYPE,ATTR extends Any>

Parameters:

elementIndex - Element row key in the table's address space

Returns:

The object value at the specified element row key

fillChunkAppend

public void fillChunkAppend(@NotNull
 @NotNull ChunkSource.FillContext context,
 @NotNull
 @NotNull WritableChunk<? super ATTR> destination,
 int length)

Description copied from interface: Page.WithDefaultsForRepeatingValues

Appends the values repeating value length times to destination.

Specified by:

fillChunkAppend in interface Page.WithDefaultsForRepeatingValues<DATA_TYPE>

gatherDictionaryValuesRowSet

public boolean gatherDictionaryValuesRowSet(@NotNull
 RowSet.SearchIterator keysToVisit,
 @NotNull
 RowSequence.Iterator knownKeys,
 @NotNull
 @NotNull RowSetBuilderSequential sequentialBuilder)

Description copied from interface: ColumnRegionObject

Optional method that should only be used on regions returned by ColumnRegionObject.getDictionaryValuesRegion(). Gathers row keys representing the dictionary values for this region, excluding those already known to the caller. This is used to support symbol table access.

Specified by:

gatherDictionaryValuesRowSet in interface ColumnRegionObject<DATA_TYPE,ATTR extends Any>

Parameters:

keysToVisit - A search iterator over the enclosing table address space (which must have the same regions at the same masks), positioned at a row key in this region. Used to identify regions to visit. Should be advanced to after this region as a side-effect.

knownKeys - An iterator over the previously-known row keys, positioned at the first known key in this region, or after the region's maximum key if no keys are known. Should be advanced to after this region as a side effect.

sequentialBuilder - Output builder; implementations should append ranges for row keys not found in knownKeys

Returns:

Whether keysToVisit has been exhausted

getDictionaryKeysRegion

public ColumnRegionLong<DictionaryKeys> getDictionaryKeysRegion()

Specified by:

getDictionaryKeysRegion in interface ColumnRegionObject<DATA_TYPE,ATTR extends Any>

Returns:

A dictionary keys region as specified by ColumnRegionObject.supportsDictionaryFormat(RowSet.SearchIterator)