Package com.illumon.iris.db.v2.by

Class HashTableColumnSource<DATA_TYPE>

java.lang.Object

com.illumon.iris.db.v2.sources.AbstractColumnSource<DATA_TYPE>

com.illumon.iris.db.v2.by.HashTableColumnSource<DATA_TYPE>

All Implemented Interfaces:

ChunkSource<Attributes.Values>, ChunkSource.WithPrev<Attributes.Values>, DefaultChunkSource<Attributes.Values>, DefaultChunkSource.WithPrev<Attributes.Values>, FillContextMaker, GetContextMaker, ColumnSource<DATA_TYPE>, ElementSource<DATA_TYPE>, Releasable, TupleExporter<DATA_TYPE>, TupleSource<DATA_TYPE>, Serializable

public class HashTableColumnSource<DATA_TYPE>
extends AbstractColumnSource<DATA_TYPE>
implements ColumnSource<DATA_TYPE>

ColumnSource implementation that delegates to the main and overflow sources for a hash table column.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class com.illumon.iris.db.v2.sources.AbstractColumnSource

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

Nested classes/interfaces inherited from interface com.illumon.iris.db.v2.sources.chunk.ChunkSource

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

Nested classes/interfaces inherited from interface com.illumon.iris.db.v2.sources.chunk.DefaultChunkSource

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

Field Summary

Fields

Modifier and Type	Field	Description
static int	MINIMUM_OVERFLOW_HASH_SLOT

Fields inherited from class com.illumon.iris.db.v2.sources.AbstractColumnSource

componentType, groupToRange, type

Fields inherited from interface com.illumon.iris.db.v2.sources.chunk.ChunkSource

DEFAULT_FILL_INSTANCE, ZERO_LENGTH_CHUNK_SOURCE_ARRAY

Fields inherited from interface com.illumon.iris.db.v2.sources.chunk.ChunkSource.WithPrev

ZERO_LENGTH_CHUNK_SOURCE_WITH_PREV_ARRAY

Fields inherited from interface com.illumon.iris.db.v2.sources.ColumnSource

ZERO_LENGTH_COLUMN_SOURCE_ARRAY

Constructor Summary

Constructors

Constructor	Description
HashTableColumnSource(ColumnSource<DATA_TYPE> mainSource, ColumnSource<DATA_TYPE> overflowSource)

Method Summary

Modifier and Type	Method	Description
<ALTERNATE_DATA_TYPE> boolean	allowsReinterpret(Class<ALTERNATE_DATA_TYPE> alternateDataType)	Test if a reinterpret call will succeed.
protected <ALTERNATE_DATA_TYPE> ColumnSource<ALTERNATE_DATA_TYPE>	doReinterpret(Class<ALTERNATE_DATA_TYPE> alternateDataType)	Supply allowed reinterpret results.
void	fillChunk(ChunkSource.FillContext context, WritableChunk<? super Attributes.Values> destination, OrderedKeys orderedKeys)	Populates the given destination chunk with data corresponding to the keys from the given OrderedKeys.
void	fillPrevChunk(ChunkSource.FillContext context, WritableChunk<? super Attributes.Values> destination, OrderedKeys orderedKeys)	Populates the given destination chunk with data corresponding to the keys from the given OrderedKeys.
DATA_TYPE	get(long index)	Get the value from the source.
Boolean	getBoolean(long index)	Get the value at the index as a Boolean.
byte	getByte(long index)	Get the value at the index as a byte.
char	getChar(long index)	Get the value at the index as a char.
Chunk<? extends Attributes.Values>	getChunk(ChunkSource.GetContext context, OrderedKeys orderedKeys)	Returns a chunk of data corresponding to the keys from the given OrderedKeys.
double	getDouble(long index)	Get the value at the index as a double.
float	getFloat(long index)	Get the value at the index as a float.
int	getInt(long index)	Get the value at the index as an int.
long	getLong(long index)	Get the value at the index as a long.
DATA_TYPE	getPrev(long index)	Get the previous value at the index.
Boolean	getPrevBoolean(long index)	Get the previous value at the index as a Boolean.
byte	getPrevByte(long index)	Get the previous value at the index as a byte.
char	getPrevChar(long index)	Get the previous value at the index as a char.
Chunk<? extends Attributes.Values>	getPrevChunk(ChunkSource.GetContext context, OrderedKeys orderedKeys)	Returns a chunk of previous data corresponding to the keys from the given OrderedKeys.
double	getPrevDouble(long index)	Get the previous value at the index as a double.
float	getPrevFloat(long index)	Get the previous value at the index as a float.
int	getPrevInt(long index)	Get the previous value at the index as an int.
long	getPrevLong(long index)	Get the previous value at the index as a long.
short	getPrevShort(long index)	Get the previous value at the index as a short.
short	getShort(long index)	Get the value at the index as a short.
static int	hashLocationToOverflowLocation(int hashSlot)
boolean	isImmutable()	Determine if this column source is immutable, meaning that the values at a given index key never change.
static boolean	isOverflowLocation(long index)
ChunkSource.FillContext	makeFillContext(int chunkCapacity, SharedContext sharedContext)	Allocate a new ChunkSource.FillContext for filling chunks from this FillContextMaker, typically a ChunkSource.
ChunkSource.GetContext	makeGetContext(int chunkCapacity, SharedContext sharedContext)	Allocate a new ChunkSource.GetContext for retrieving chunks from this GetContextMaker, typically a ChunkSource.
static int	overflowLocationToHashLocation(int overflowSlot)
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 com.illumon.iris.db.v2.sources.AbstractColumnSource

computeFlattenedGroupings, defaultFillChunk, forEachGroup, forEachResponsiveGroup, getComponentType, getGroupToRange, getGroupToRange, getNativeType, getType, getValuesMapping, groupingToFlatSources, groupingToFlatSources, groupingToFlatSources, isSerializable, match, reinterpret, setGroupToRange

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.illumon.iris.db.v2.sources.chunk.ChunkSource

getChunkType

Methods inherited from interface com.illumon.iris.db.v2.sources.ColumnSource

cast, createPreviousTuple, createTuple, createTupleFromValues, exportElement, exportElement, exportToExternalKey, getColumnSources, getComponentType, getGroupToRange, getGroupToRange, getNativeType, getPrevSource, getType, getValuesMapping, match, reinterpret, releaseCachedResources

Methods inherited from interface com.illumon.iris.db.v2.sources.chunk.DefaultChunkSource

getChunk, getChunkByFilling

Methods inherited from interface com.illumon.iris.db.v2.sources.chunk.DefaultChunkSource.WithPrev

getPrevChunk, getPrevChunkByFilling

Methods inherited from interface com.illumon.iris.db.v2.sources.chunk.FillContextMaker

makeFillContext

Methods inherited from interface com.illumon.iris.db.v2.sources.chunk.GetContextMaker

makeGetContext

Methods inherited from interface com.illumon.iris.db.v2.tuples.TupleExporter

exportElementReinterpreted

Methods inherited from interface com.illumon.iris.db.v2.tuples.TupleSource

createTupleFromReinterpretedValues

Field Details

MINIMUM_OVERFLOW_HASH_SLOT

public static final int MINIMUM_OVERFLOW_HASH_SLOT

See Also:

Constant Field Values

Constructor Details

HashTableColumnSource

public HashTableColumnSource(@NotNull ColumnSource<DATA_TYPE> mainSource, @NotNull ColumnSource<DATA_TYPE> overflowSource)

Method Details

makeFillContext

public final ChunkSource.FillContext makeFillContext(int chunkCapacity, SharedContext sharedContext)

Description copied from interface: FillContextMaker

Allocate a new ChunkSource.FillContext for filling chunks from this FillContextMaker, typically a ChunkSource.

Specified by:

makeFillContext in interface DefaultChunkSource<DATA_TYPE>

Specified by:

makeFillContext in interface FillContextMaker

Parameters:

chunkCapacity - The maximum size of any WritableChunk that will be filled with this context

sharedContext - Shared store of intermediate results.

Returns:

A context for use with fill operations

makeGetContext

public final ChunkSource.GetContext makeGetContext(int chunkCapacity, SharedContext sharedContext)

Description copied from interface: GetContextMaker

Allocate a new ChunkSource.GetContext for retrieving chunks from this GetContextMaker, typically a ChunkSource.

Specified by:

makeGetContext in interface DefaultChunkSource<DATA_TYPE>

Specified by:

makeGetContext in interface GetContextMaker

Parameters:

chunkCapacity - The maximum size required for any WritableChunk allocated as part of the result.

sharedContext - Shared store of intermediate results.

Returns:

A context for use with get operations

fillChunk

public final void fillChunk(@NotNull ChunkSource.FillContext context, @NotNull WritableChunk<? super Attributes.Values> destination, @NotNull OrderedKeys orderedKeys)

Description copied from interface: ChunkSource

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

Specified by:

fillChunk in interface ChunkSource<DATA_TYPE>

Overrides:

fillChunk in class AbstractColumnSource<DATA_TYPE>

Parameters:

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

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

orderedKeys - An OrderedKeys representing the keys to be fetched

fillPrevChunk

public final void fillPrevChunk(@NotNull ChunkSource.FillContext context, @NotNull WritableChunk<? super Attributes.Values> destination, @NotNull OrderedKeys orderedKeys)

Description copied from interface: ChunkSource.WithPrev

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

Specified by:

fillPrevChunk in interface ChunkSource.WithPrev<DATA_TYPE>

Overrides:

fillPrevChunk in class AbstractColumnSource<DATA_TYPE>

Parameters:

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

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

orderedKeys - An OrderedKeys representing the keys to be fetched

getChunk

public final Chunk<? extends Attributes.Values> getChunk(@NotNull ChunkSource.GetContext context, @NotNull OrderedKeys orderedKeys)

Description copied from interface: ChunkSource

Returns a chunk of data corresponding to the keys from the given OrderedKeys.

Specified by:

getChunk in interface ChunkSource<DATA_TYPE>

Specified by:

getChunk in interface DefaultChunkSource<DATA_TYPE>

Parameters:

context - A context containing all mutable/state related data used in retrieving the Chunk. In particular, the Context may be used to provide a Chunk data pool

orderedKeys - An OrderedKeys representing the keys to be fetched

Returns:

A chunk of data corresponding to the keys from the given OrderedKeys

getPrevChunk

public final Chunk<? extends Attributes.Values> getPrevChunk(@NotNull ChunkSource.GetContext context, @NotNull OrderedKeys orderedKeys)

Description copied from interface: ChunkSource.WithPrev

Returns a chunk of previous data corresponding to the keys from the given OrderedKeys.

Specified by:

getPrevChunk in interface ChunkSource.WithPrev<DATA_TYPE>

Specified by:

getPrevChunk in interface DefaultChunkSource.WithPrev<DATA_TYPE>

Parameters:

context - A context containing all mutable/state related data used in retrieving the Chunk. In particular, the Context may be used to provide a Chunk data pool

orderedKeys - An OrderedKeys representing the keys to be fetched

Returns:

A chunk of data corresponding to the keys from the given OrderedKeys

get

public final DATA_TYPE get(long index)

Description copied from interface: ElementSource

Get the value from the source. This may return boxed values for basic types.

Specified by:

get in interface ElementSource<DATA_TYPE>

Parameters:

index - the location in index space to get the value from.

Returns:

the value at the index, potentially null.

getBoolean

public final Boolean getBoolean(long index)

Description copied from interface: ElementSource

Get the value at the index as a Boolean.

Specified by:

getBoolean in interface ElementSource<DATA_TYPE>

Parameters:

index - the location in index space to get the value from.

Returns:

the boolean at the index, potentially null.

getByte

public final byte getByte(long index)

Description copied from interface: ElementSource

Get the value at the index as a byte.

Specified by:

getByte in interface ElementSource<DATA_TYPE>

Parameters:

index - the location in index space to get the value from.

Returns:

the boolean at the index, null values are represented by QueryConstants.NULL_BYTE

getChar

public final char getChar(long index)

Description copied from interface: ElementSource

Get the value at the index as a char.

Specified by:

getChar in interface ElementSource<DATA_TYPE>

Parameters:

index - the location in index space to get the value from.

Returns:

the char at the index, null values are represented by QueryConstants.NULL_CHAR

getDouble

public final double getDouble(long index)

Description copied from interface: ElementSource

Get the value at the index as a double.

Specified by:

getDouble in interface ElementSource<DATA_TYPE>

Parameters:

index - the location in index space to get the value from.

Returns:

the double at the index, null values are represented by QueryConstants.NULL_DOUBLE

getFloat

public final float getFloat(long index)

Description copied from interface: ElementSource

Get the value at the index as a float.

Specified by:

getFloat in interface ElementSource<DATA_TYPE>

Parameters:

index - the location in index space to get the value from.

Returns:

the float at the index, null values are represented by QueryConstants.NULL_FLOAT

getInt

public final int getInt(long index)

Description copied from interface: ElementSource

Get the value at the index as an int.

Specified by:

getInt in interface ElementSource<DATA_TYPE>

Parameters:

index - the location in index space to get the value from.

Returns:

the int at the index, null values are represented by QueryConstants.NULL_INT

getLong

public final long getLong(long index)

Description copied from interface: ElementSource

Get the value at the index as a long.

Specified by:

getLong in interface ElementSource<DATA_TYPE>

Parameters:

index - the location in index space to get the value from.

Returns:

the long at the index, null values are represented by QueryConstants.NULL_LONG

getShort

public final short getShort(long index)

Description copied from interface: ElementSource

Get the value at the index as a short.

Specified by:

getShort in interface ElementSource<DATA_TYPE>

Parameters:

index - the location in index space to get the value from.

Returns:

the short at the index, null values are represented by QueryConstants.NULL_SHORT

getPrev

public final DATA_TYPE getPrev(long index)

Description copied from interface: ElementSource

Get the previous value at the index. Previous values are used during an LTM update cycle to process changes in data. During normal operation previous values will be identical to current values.

Specified by:

getPrev in interface ElementSource<DATA_TYPE>

Parameters:

index - the location in index space to get the value from.

Returns:

the previous value at the index, or null.

getPrevBoolean

public final Boolean getPrevBoolean(long index)

Description copied from interface: ElementSource

Get the previous value at the index as a Boolean. See ElementSource.getPrev(long) for more details.

Specified by:

getPrevBoolean in interface ElementSource<DATA_TYPE>

Parameters:

index - the location in index space to get the previous value from.

Returns:

the previous boolean at the index, or null.

getPrevByte

public final byte getPrevByte(long index)

Description copied from interface: ElementSource

Get the previous value at the index as a byte. See ElementSource.getPrev(long) for more details.

Specified by:

getPrevByte in interface ElementSource<DATA_TYPE>

Parameters:

index - the location in index space to get the previous value from.

Returns:

the previous boolean at the index, null values are represented by QueryConstants.NULL_BYTE

getPrevChar

public final char getPrevChar(long index)

Description copied from interface: ElementSource

Get the previous value at the index as a char. See ElementSource.getPrev(long) for more details.

Specified by:

getPrevChar in interface ElementSource<DATA_TYPE>

Parameters:

index - the location in index space to get the previous value from.

Returns:

the previous char at the index, null values are represented by QueryConstants.NULL_CHAR

getPrevDouble

public final double getPrevDouble(long index)

Description copied from interface: ElementSource

Get the previous value at the index as a double. See ElementSource.getPrev(long) for more details.

Specified by:

getPrevDouble in interface ElementSource<DATA_TYPE>

Parameters:

index - the location in index space to get the previous value from.

Returns:

the previous double at the index, null values are represented by QueryConstants.NULL_DOUBLE

getPrevFloat

public final float getPrevFloat(long index)

Description copied from interface: ElementSource

Get the previous value at the index as a float. See ElementSource.getPrev(long) for more details.

Specified by:

getPrevFloat in interface ElementSource<DATA_TYPE>

Parameters:

index - the location in index space to get the previous value from.

Returns:

the previous float at the index, null values are represented by QueryConstants.NULL_FLOAT

getPrevInt

public final int getPrevInt(long index)

Description copied from interface: ElementSource

Get the previous value at the index as an int. See ElementSource.getPrev(long) for more details.

Specified by:

getPrevInt in interface ElementSource<DATA_TYPE>

Parameters:

index - the location in index space to get the previous value from.

Returns:

the previous int at the index, null values are represented by QueryConstants.NULL_INT

getPrevLong

public final long getPrevLong(long index)

Description copied from interface: ElementSource

Get the previous value at the index as a long. See ElementSource.getPrev(long) for more details.

Specified by:

getPrevLong in interface ElementSource<DATA_TYPE>

Parameters:

index - the location in index space to get the previous value from.

Returns:

the previous long at the index, null values are represented by QueryConstants.NULL_LONG

getPrevShort

public final short getPrevShort(long index)

Description copied from interface: ElementSource

Get the previous value at the index as a short. See ElementSource.getPrev(long) for more details.

Specified by:

getPrevShort in interface ElementSource<DATA_TYPE>

Parameters:

index - the location in index space to get the previous value from.

Returns:

the previous short at the index, null values are represented by QueryConstants.NULL_SHORT

startTrackingPrevValues

public final 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>

isImmutable

public final boolean isImmutable()

Description copied from interface: ColumnSource

Determine if this column source is immutable, meaning that the values at a given index key never change.

Specified by:

isImmutable in interface ColumnSource<DATA_TYPE>

Returns:

true if the values at a given index of the column source never change, false otherwise

allowsReinterpret

public <ALTERNATE_DATA_TYPE> boolean allowsReinterpret(@NotNull Class<ALTERNATE_DATA_TYPE> alternateDataType)

Description copied from interface: ColumnSource

Test if a reinterpret call will succeed.

Specified by:

allowsReinterpret in interface ColumnSource<DATA_TYPE>

Overrides:

allowsReinterpret in class AbstractColumnSource<DATA_TYPE>

Parameters:

alternateDataType - The alternative type to consider

Returns:

If a reinterpret on this column source with the supplied alternateDataType will succeed.

doReinterpret

protected <ALTERNATE_DATA_TYPE> ColumnSource<ALTERNATE_DATA_TYPE> doReinterpret(@NotNull Class<ALTERNATE_DATA_TYPE> alternateDataType)

Description copied from class: AbstractColumnSource

Supply allowed reinterpret results. The default implementation handles the most common case to avoid code duplication.

Overrides:

doReinterpret in class AbstractColumnSource<DATA_TYPE>

Parameters:

alternateDataType - The alternate data type

Returns:

The resulting ColumnSource

isOverflowLocation

public static boolean isOverflowLocation(long index)

hashLocationToOverflowLocation

public static int hashLocationToOverflowLocation(int hashSlot)

overflowLocationToHashLocation

public static int overflowLocationToHashLocation(int overflowSlot)