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

Class AggregationControl

java.lang.Object

com.illumon.iris.db.v2.by.AggregationControl

@VisibleForTesting
public class AggregationControl
extends Object

Stateless "control" class for giving external code (e.g. unit tests) knobs to turn w.r.t. to how aggregations should be processed.

Field Summary

Fields

Modifier and Type	Field	Description
static final AggregationControl	DEFAULT
static final AggregationControl	DEFAULT_FOR_OPERATOR
static final AggregationControl	DEFAULT_FOR_ROLLUP_WITH_CONSTITUENTS

Constructor Summary

Constructors

Constructor	Description
AggregationControl()

Method Summary

Modifier and Type	Method	Description
boolean	considerGrouping(Table inputTable, ColumnSource<?>[] sources)
double	getMaximumLoadFactor()
double	getTargetLoadFactor()
int	initialHashTableSize(Table inputTable)
boolean	shouldProbeShift(long shiftSize, int numStates)

Methods inherited from class java.lang.Object

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

Field Details

DEFAULT

public static final AggregationControl DEFAULT

DEFAULT_FOR_OPERATOR

public static final AggregationControl DEFAULT_FOR_OPERATOR

DEFAULT_FOR_ROLLUP_WITH_CONSTITUENTS

public static final AggregationControl DEFAULT_FOR_ROLLUP_WITH_CONSTITUENTS

Constructor Details

AggregationControl

public AggregationControl()

Method Details

initialHashTableSize

public int initialHashTableSize(@NotNull
 Table inputTable)

getTargetLoadFactor

public double getTargetLoadFactor()

getMaximumLoadFactor

public double getMaximumLoadFactor()

considerGrouping

public boolean considerGrouping(@NotNull
 Table inputTable,
 @NotNull
 ColumnSource<?>[] sources)

shouldProbeShift

public boolean shouldProbeShift(long shiftSize,
 int numStates)