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

Class ParquetColumnRegionBase<ATTR extends Attributes.Any>

java.lang.Object

com.illumon.iris.db.v2.sources.regioned.ParquetColumnRegionBase<ATTR>

All Implemented Interfaces:

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

Direct Known Subclasses:

ParquetColumnRegionByte, ParquetColumnRegionChar, ParquetColumnRegionDouble, ParquetColumnRegionFloat, ParquetColumnRegionInt, ParquetColumnRegionLong, ParquetColumnRegionObject, ParquetColumnRegionShort

public class ParquetColumnRegionBase<ATTR extends Attributes.Any>
extends Object

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.
long	firstRowOffset()
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.
ChunkPage<ATTR>	getChunkPageContaining(long elementIndex)
Class<?>	getNativeType()
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.
long	maxRow(long row)	The maxRow is the greatest possible row which may reference this 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

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

Method Details

firstRowOffset

public long firstRowOffset()

Specified by:

firstRowOffset in interface ColumnRegion<ATTR extends Attributes.Any>

Specified by:

firstRowOffset in interface Page<ATTR extends Attributes.Any>

Returns:

the first row of this page, after applying the PagingChunkSource.mask(), which refers to the first row of this page.

maxRow

public long maxRow(long row)

Description copied from interface: PagingChunkSource

The maxRow is the greatest possible row which may reference this ChunkSource. This method is used by PagingChunkSource.fillChunkAppend(FillContext, WritableChunk, OrderedKeys.Iterator) to determine which of its OrderedKeys are referencing this PagingChunkSource.

The default implementation assumes that only one PagingChunkSource exits for each page reference. That is, there is only one PagingChunkSource for OrderedKeys with the same bits outside of PagingChunkSource.mask().

It is also possible to pack multiple, non-overlapping PagingChunkSources into the same page reference. In this case, one typically will want to override maxRow. An example such implementation is ChunkPage.

Specified by:

maxRow in interface PagingChunkSource<ATTR extends Attributes.Any>

Parameters:

row - Any row contained on this page.

Returns:

the maximum last row of this page, located in the same way as row.

length

public final long length()

Specified by:

length in interface Page<ATTR extends Attributes.Any>

Returns:

the length of this page.

getNativeType

@NotNull public final Class<?> getNativeType()

Specified by:

getNativeType in interface ChunkSource<ATTR extends Attributes.Any>

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.

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.

getChunkPageContaining

public final ChunkPage<ATTR> getChunkPageContaining(long elementIndex)

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

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