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

Direct Known Subclasses:: DiskBackedDeferredGroupingProvider, PartitionColumnGroupingProvider, StaticGroupingProvider

public abstract class MemoizingGroupingProvider
extends Object
implements GroupingProvider

A base GroupingProvider that supports memoization.

Method Summary

Modifier and Type	Method	Description
`void`	`clearMemoizedGroupings()`	Clear all memoized groupings.
`protected Table`	`memoizeGrouping(GroupingMemoKey memoKey, Supplier<Table> groupingFactory)`	Get the memoized grouping, or compute it if none existed.

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

getGroupingBuilder, hasGrouping

Constructor Details
- MemoizingGroupingProvider
  
  public MemoizingGroupingProvider()
Method Details
- memoizeGrouping
  
  @Nullable protected Table memoizeGrouping(@Nullable GroupingMemoKey memoKey, @NotNull Supplier<Table> groupingFactory)
  
  Get the memoized grouping, or compute it if none existed.
  
  Parameters:
  
  memoKey - the memo key, or null if memoization is not allowed.
  
  groupingFactory - the method to create the grouping
  
  Returns:
  
  the resultant grouping.
- clearMemoizedGroupings
  
  public void clearMemoizedGroupings()
  
  Clear all memoized groupings.

Class MemoizingGroupingProvider