Package com.illumon.iris.db.v2.dataindex

Class DiskBackedDeferredGroupingProvider<DATA_TYPE>

java.lang.Object

com.illumon.iris.db.v2.dataindex.MemoizingGroupingProvider

com.illumon.iris.db.v2.dataindex.DiskBackedDeferredGroupingProvider<DATA_TYPE>

All Implemented Interfaces:

GroupingProvider, KeyRangeGroupingProvider

public class DiskBackedDeferredGroupingProvider<DATA_TYPE>
extends MemoizingGroupingProvider
implements KeyRangeGroupingProvider

Grouping provider that loads column location metadata and assembles grouping indexes lazily on demand.

Field Summary

Fields

Modifier and Type	Field	Description
static ForkJoinPool	GROUPING_POOL
static int	THREADPOOL_SIZE

Constructor Summary

Constructors

Constructor	Description
DiskBackedDeferredGroupingProvider(com.illumon.dataobjects.ColumnDefinition<DATA_TYPE> columnDefinition, com.fishlib.io.logger.Logger log)

Method Summary

Modifier and Type	Method	Description
void	addSource(ColumnLocation columnLocation, long firstKey, long lastKey)	Add a column location for consideration when constructing groupings.
GroupingBuilder	getGroupingBuilder()	Get a GroupingBuilder suitable for creating groups with specific properties.
boolean	hasGrouping()	Check if this provider is able to create a grouping or not.

Methods inherited from class com.illumon.iris.db.v2.dataindex.MemoizingGroupingProvider

clearMemoizedGroupings, memoizeGrouping

Methods inherited from class java.lang.Object

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

Field Details

THREADPOOL_SIZE

public static final int THREADPOOL_SIZE

GROUPING_POOL

public static final ForkJoinPool GROUPING_POOL

Constructor Details

DiskBackedDeferredGroupingProvider

public DiskBackedDeferredGroupingProvider(@NotNull com.illumon.dataobjects.ColumnDefinition<DATA_TYPE> columnDefinition, @NotNull com.fishlib.io.logger.Logger log)

Method Details

addSource

public void addSource(@NotNull ColumnLocation columnLocation, long firstKey, long lastKey)

Description copied from interface: KeyRangeGroupingProvider

Add a column location for consideration when constructing groupings.

Specified by:

addSource in interface KeyRangeGroupingProvider

Parameters:

columnLocation - The column location to add

firstKey - The first key in the range for this column location

lastKey - The last key in the range for this column location (inclusive)

getGroupingBuilder

@NotNull public GroupingBuilder getGroupingBuilder()

Description copied from interface: GroupingProvider

Get a GroupingBuilder suitable for creating groups with specific properties.

Specified by:

getGroupingBuilder in interface GroupingProvider

Returns:

a GroupingBuilder

hasGrouping

public boolean hasGrouping()

Description copied from interface: GroupingProvider

Check if this provider is able to create a grouping or not.

Specified by:

hasGrouping in interface GroupingProvider

Returns:

true if this provider can create a grouping.