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

Class CharSsmBackedSource

java.lang.Object

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

com.illumon.iris.db.v2.by.ssmcountdistinct.CharSsmBackedSource

All Implemented Interfaces:

SsmBackedColumnSource<CharSegmentedSortedMultiset,DbCharArray>, ChunkSource<Attributes.Values>, ChunkSource.WithPrev<Attributes.Values>, DefaultChunkSource<Attributes.Values>, DefaultChunkSource.WithPrev<Attributes.Values>, FillContextMaker, GetContextMaker, ColumnSource<DbCharArray>, ColumnSourceGetDefaults.ForObject<DbCharArray>, ElementSource<DbCharArray>, MutableColumnSource<DbCharArray>, MutableColumnSourceGetDefaults.ForObject<DbCharArray>, Releasable, TupleExporter<DbCharArray>, TupleSource<DbCharArray>, Serializable

public class CharSsmBackedSource
extends AbstractColumnSource<DbCharArray>
implements ColumnSourceGetDefaults.ForObject<DbCharArray>, MutableColumnSourceGetDefaults.ForObject<DbCharArray>, SsmBackedColumnSource<CharSegmentedSortedMultiset,DbCharArray>

A SsmBackedColumnSource for Characters.

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

componentType, 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
CharSsmBackedSource()

Method Summary

Modifier and Type	Method	Description
void	clear(long key)	Set the SSM at the specified key to null
void	clearDeltas(Index indices)	Clear out any tracked deltas from recent computations.
void	ensureCapacity(long capacity)	Ensure the source has at least `capacity` capacity
DbCharArray	get(long index)	Get the value from the source.
CharSegmentedSortedMultiset	getCurrentSsm(long key)	Get the current SSM at the specified key.
CharSegmentedSortedMultiset	getOrCreate(long key)	Get the ssm at the specified key, creating one if none existed.
DbCharArray	getPrev(long index)	Get the previous value at the index.
ObjectArraySource<CharSegmentedSortedMultiset>	getUnderlyingSource()
boolean	isImmutable()	Determine if this column source is immutable, meaning that the values at a given index key never change.
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

allowsReinterpret, defaultFillChunk, doReinterpret, fillChunk, fillPrevChunk, getComponentType, getGroupingBuilder, getGroupingProvider, getNativeType, getType, hasGrouping, isSerializable, match, reinterpret, setGroupingProvider

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

fillChunk, getChunkType

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

fillPrevChunk

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

allowsReinterpret, cast, createPreviousTuple, createTuple, createTupleFromValues, exportElement, exportElement, exportToExternalKey, getColumnSources, getComponentType, getGroupingBuilder, getGroupingProvider, getNativeType, getPrevSource, getType, hasGrouping, match, reinterpret, releaseCachedResources, setGroupingProvider

Methods inherited from interface com.illumon.iris.db.v2.sources.ColumnSourceGetDefaults.ForObject

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

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

getChunk, getChunk, getChunkByFilling, makeFillContext, makeGetContext

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

getPrevChunk, 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.sources.MutableColumnSourceGetDefaults.ForObject

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

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

exportElementReinterpreted

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

createTupleFromReinterpretedValues

Constructor Details

CharSsmBackedSource

public CharSsmBackedSource()

Method Details

getOrCreate

public CharSegmentedSortedMultiset getOrCreate(long key)

Description copied from interface: SsmBackedColumnSource

Get the ssm at the specified key, creating one if none existed. This method will update the current previous tracking state of the SSM.

Specified by:

getOrCreate in interface SsmBackedColumnSource<CharSegmentedSortedMultiset,DbCharArray>

Parameters:

key - the key to get the ssm for.

Returns:

the SSM at the key, or a new one.

getCurrentSsm

public CharSegmentedSortedMultiset getCurrentSsm(long key)

Description copied from interface: SsmBackedColumnSource

Get the current SSM at the specified key. This does not permute it in any way.

Specified by:

getCurrentSsm in interface SsmBackedColumnSource<CharSegmentedSortedMultiset,DbCharArray>

Parameters:

key - the key to get the ssm for.

Returns:

the SSM

clear

public void clear(long key)

Description copied from interface: SsmBackedColumnSource

Set the SSM at the specified key to null

Specified by:

clear in interface SsmBackedColumnSource<CharSegmentedSortedMultiset,DbCharArray>

Parameters:

key - the key to get the ssm for.

ensureCapacity

public void ensureCapacity(long capacity)

Description copied from interface: SsmBackedColumnSource

Ensure the source has at least `capacity` capacity

Specified by:

ensureCapacity in interface SsmBackedColumnSource<CharSegmentedSortedMultiset,DbCharArray>

Parameters:

capacity - the capacity to ensure.

getUnderlyingSource

public ObjectArraySource<CharSegmentedSortedMultiset> getUnderlyingSource()

Specified by:

getUnderlyingSource in interface SsmBackedColumnSource<CharSegmentedSortedMultiset,DbCharArray>

isImmutable

public 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<DbCharArray>

Specified by:

isImmutable in interface MutableColumnSource<DbCharArray>

Returns:

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

get

public DbCharArray 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<DbCharArray>

Parameters:

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

Returns:

the value at the index, potentially null.

getPrev

public DbCharArray 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<DbCharArray>

Parameters:

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

Returns:

the previous value at the index, or 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<DbCharArray>

clearDeltas

public void clearDeltas(Index indices)

Description copied from interface: SsmBackedColumnSource

Clear out any tracked deltas from recent computations.

Specified by:

clearDeltas in interface SsmBackedColumnSource<CharSegmentedSortedMultiset,DbCharArray>

Parameters:

indices - the set of indices to clear deltas for.