Package com.illumon.iris.db.v2.sources.regioned

Class DeferredColumnRegionBase<ATTR extends Attributes.Any,REGION_TYPE extends ColumnRegion<ATTR>>

java.lang.Object

com.illumon.iris.db.v2.sources.regioned.DeferredColumnRegionBase<ATTR,REGION_TYPE>

All Implemented Interfaces:

ChunkSource<ATTR>, FillContextMaker, GetContextMaker, Page<ATTR>, PagingChunkSource<ATTR>, ColumnRegion<ATTR>, Releasable

Direct Known Subclasses:

DeferredColumnRegionChar, DeferredColumnRegionDouble, DeferredColumnRegionFloat, DeferredColumnRegionInt, DeferredColumnRegionLong, DeferredColumnRegionObject, DeferredColumnRegionReferencing, DeferredColumnRegionShort

public class DeferredColumnRegionBase<ATTR extends Attributes.Any,REGION_TYPE extends ColumnRegion<ATTR>>
extends Object

Base deferred region implementation.

Nested Class Summary

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.regioned.ColumnRegion

ColumnRegion.Null<ATTR extends Attributes.Any>

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

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

Field Summary

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.regioned.ColumnRegion

REGION_MASK

Method Summary

Modifier and Type	Method	Description
void	fillChunk(ChunkSource.FillContext context, WritableChunk<? super ATTR> destination, OrderedKeys orderedKeys)	Populates the given destination chunk with data corresponding to the keys from the given OrderedKeys.
void	fillChunkAppend(ChunkSource.FillContext context, WritableChunk<? super ATTR> destination, OrderedKeys.Iterator orderedKeysIterator)	Similar to ChunkSource.fillChunk(FillContext, WritableChunk, OrderedKeys), except that the values from the ChunkSource are appended to destination, rather than placed at the beginning.
Chunk<? extends ATTR>	getChunk(ChunkSource.GetContext context, long firstKey, long lastKey)	Same as ChunkSource.getChunk(GetContext, OrderedKeys), except that you pass in the begin and last keys representing the begin and last (inclusive) keys of a single range rather than an OrderedKeys.
Chunk<? extends ATTR>	getChunk(ChunkSource.GetContext context, OrderedKeys orderedKeys)	Returns a chunk of data corresponding to the keys from the given OrderedKeys.
Class<?>	getNativeType()
REGION_TYPE	getResultRegion()
long	length()
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.
void	releaseCachedResources()	Release any resources held for caching purposes.

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.regioned.ColumnRegion

firstRowOffset, mask

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.chunk.page.Page

advanceToNextPage, advanceToNextPage, advanceToNextPageAndGetPositionDistance, firstRow, getRowOffset, lastRow

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

maxRow

Method Details

getResultRegion

public final REGION_TYPE getResultRegion()

releaseCachedResources

@OverridingMethodsMustInvokeSuper public void releaseCachedResources()

Description copied from interface: Releasable

Release any resources held for caching purposes. Implementations need not guarantee that they are safe for normal use concurrently with invocations of this method.

Specified by:

releaseCachedResources in interface Releasable

getNativeType

public Class<?> getNativeType()

Specified by:

getNativeType in interface ChunkSource<ATTR extends Attributes.Any>

length

public long length()

Specified by:

length in interface Page<ATTR extends Attributes.Any>

Returns:

the length of this page.

fillChunk

public void fillChunk(@NotNull ChunkSource.FillContext context, @NotNull WritableChunk<? super ATTR> 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<ATTR extends Attributes.Any>

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

fillChunkAppend

public void fillChunkAppend(@NotNull ChunkSource.FillContext context, @NotNull WritableChunk<? super ATTR> destination, @NotNull OrderedKeys.Iterator orderedKeysIterator)

Description copied from interface: PagingChunkSource

Similar to ChunkSource.fillChunk(FillContext, WritableChunk, OrderedKeys), except that the values from the ChunkSource are appended to destination, rather than placed at the beginning.

The values to fill into destination are specified by orderedKeysIterator, whose OrderedKeys.firstKey() must exist, and must be represented by this PagingChunkSource (modulo {#link @mask}), otherwise results are undefined.

No more than the elements in orderedKeysIterator, which are on the same page as OrderedKeys.firstKey(), have their values appended to destination, and consumed from orderedKeysIterator. Keys are on the same page when the bits outside of PagingChunkSource.mask() are identical.

Specified by:

fillChunkAppend in interface PagingChunkSource<ATTR extends Attributes.Any>

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

destination - The chunk to append the results to.

orderedKeysIterator - The iterator to the ordered keys, which contain at least the keys to extract from this ChunkSource. The keys to extract will be at the beginning of iteration order.

getChunk

public Chunk<? extends ATTR> 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<ATTR extends Attributes.Any>

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

getChunk

public Chunk<? extends ATTR> getChunk(@NotNull ChunkSource.GetContext context, long firstKey, long lastKey)

Description copied from interface: ChunkSource

Same as ChunkSource.getChunk(GetContext, OrderedKeys), except that you pass in the begin and last keys representing the begin and last (inclusive) keys of a single range rather than an OrderedKeys. Typically you want to call this only if you don't have an OrderedKeys, such as during an OrderedKeys.forAllLongRanges(LongRangeConsumer) call. In this case, it allows you to avoid creating an intermediary OrderedKeys object.

Specified by:

getChunk in interface ChunkSource<ATTR extends Attributes.Any>

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

firstKey - The beginning key (inclusive) of the range to fetch in the chunk

lastKey - The last key (inclusive) of the range to fetch in the chunk

Returns:

A chunk of data corresponding to the keys from the given range.

makeFillContext

public 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 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 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 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