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

Class SingleValueRowRedirection

java.lang.Object

io.deephaven.engine.table.impl.util.SingleValueRowRedirection

All Implemented Interfaces:

ChunkSource<RowKeys>, ChunkSource.WithPrev<RowKeys>, FillContextMaker, GetContextMaker, DefaultChunkSource<RowKeys>, DefaultChunkSource.WithPrev<RowKeys>, FillUnordered<RowKeys>, RowRedirection

Direct Known Subclasses:

WritableSingleValueRowRedirection

public class SingleValueRowRedirection
extends Object
implements RowRedirection

RowRedirection that redirects all outer row keys to the same inner row key.

Nested Class Summary

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>

Field Summary

Fields

Modifier and Type	Field	Description
protected long	value

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

Constructor Summary

Constructors

Constructor	Description
SingleValueRowRedirection(long value)

Method Summary

Modifier and Type	Method	Description
void	fillChunk(@NotNull ChunkSource.FillContext fillContext, @NotNull WritableChunk<? super RowKeys> innerRowKeys, @NotNull RowSequence outerRowKeys)	Lookup each element in a RowSequence and write the result to a WritableLongChunk.
void	fillPrevChunk(@NotNull ChunkSource.FillContext fillContext, @NotNull WritableChunk<? super RowKeys> innerRowKeys, @NotNull RowSequence outerRowKeys)	Lookup each element in a RowSequence using previous values and write the result to a WritableLongChunk.
long	get(long outerRowKey)	Simple redirected lookup.
long	getPrev(long outerRowKey)	Simple redirected lookup, using previous values.
long	getValue()
final boolean	isWritableSingleValue()
String	toString()
final WritableSingleValueRowRedirection	writableSingleValueCast()	Cast this SingleValueRowRedirection reference to a WritableSingleValueRowRedirection.

Methods inherited from class java.lang.Object

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

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, getPrevSource

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.util.RowRedirection

ascendingMapping, fillChunkUnordered, fillPrevChunkUnordered, getChunkType, isWritable, providesFillUnordered, writableCast

Field Details

value

protected long value

Constructor Details

SingleValueRowRedirection

public SingleValueRowRedirection(long value)

Method Details

get

public long get(long outerRowKey)

Description copied from interface: RowRedirection

Simple redirected lookup.

Specified by:

get in interface RowRedirection

Parameters:

outerRowKey - The "outer" row key

Returns:

The corresponding "inner" row key, or RowSequence.NULL_ROW_KEY if no mapping exists

getPrev

public long getPrev(long outerRowKey)

Description copied from interface: RowRedirection

Simple redirected lookup, using previous values.

Specified by:

getPrev in interface RowRedirection

Parameters:

outerRowKey - The "outer" row key

Returns:

The corresponding "inner" row key, or RowSequence.NULL_ROW_KEY if no mapping exists

toString

public String toString()

Overrides:

toString in class Object

fillChunk

public void fillChunk(@NotNull
 @NotNull ChunkSource.FillContext fillContext,
 @NotNull
 @NotNull WritableChunk<? super RowKeys> innerRowKeys,
 @NotNull
 @NotNull RowSequence outerRowKeys)

Description copied from interface: RowRedirection

Lookup each element in a RowSequence and write the result to a WritableLongChunk.

Specified by:

fillChunk in interface ChunkSource<RowKeys>

Specified by:

fillChunk in interface RowRedirection

Parameters:

fillContext - The fill context

innerRowKeys - The result WritableLongChunk

outerRowKeys - The row keys to lookup in this RowRedirection

fillPrevChunk

public void fillPrevChunk(@NotNull
 @NotNull ChunkSource.FillContext fillContext,
 @NotNull
 @NotNull WritableChunk<? super RowKeys> innerRowKeys,
 @NotNull
 @NotNull RowSequence outerRowKeys)

Description copied from interface: RowRedirection

Lookup each element in a RowSequence using previous values and write the result to a WritableLongChunk.

Specified by:

fillPrevChunk in interface ChunkSource.WithPrev<RowKeys>

Specified by:

fillPrevChunk in interface RowRedirection

Parameters:

fillContext - The fill context

innerRowKeys - The result WritableLongChunk

outerRowKeys - The row keys to lookup in this RowRedirection

getValue

public long getValue()

isWritableSingleValue

public final boolean isWritableSingleValue()

Returns:

Whether this SingleValueRowRedirection is actually writable

writableSingleValueCast

public final WritableSingleValueRowRedirection writableSingleValueCast()

Cast this SingleValueRowRedirection reference to a WritableSingleValueRowRedirection.

Returns:

this cast to a WritableSingleValueRowRedirection

Throws:

ClassCastException - If this is not a WritableSingleValueRowRedirection