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

Class WeightedAverageStateFactoryImpl

java.lang.Object

com.illumon.iris.db.v2.by.WeightedAverageStateFactoryImpl

All Implemented Interfaces:

BasicDeflatable<WeightedAverageStateFactoryImpl>, AggregationStateFactory

public class WeightedAverageStateFactoryImpl
extends Object
implements BasicDeflatable<WeightedAverageStateFactoryImpl>, AggregationStateFactory

Constructor Summary

Constructors

Constructor	Description
WeightedAverageStateFactoryImpl(String weightName)

Method Summary

Modifier and Type	Method	Description
BasicInflatable<WeightedAverageStateFactoryImpl>	deflate()
AggregationMemoKey	getMemoKey()	Produces a MemoKey for this aggregation state factory.
String	getWeightName()
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Details

WeightedAverageStateFactoryImpl

public WeightedAverageStateFactoryImpl(String weightName)

Method Details

getWeightName

public String getWeightName()

getMemoKey

public AggregationMemoKey getMemoKey()

Description copied from interface: AggregationStateFactory

Produces a MemoKey for this aggregation state factory.

If two AggregationStateFactories have equal memoKeys, then Table.by(com.illumon.iris.db.v2.by.AggregationStateFactory, com.illumon.iris.db.v2.select.SelectColumn...) operations that have the same group by columns may be memoized. In that case instead of recomputing the result; the original result will be used.

If null is returned, the operation will not be memoized.

Specified by:

getMemoKey in interface AggregationStateFactory

Returns:

an AggregationMemoKey, null if this operation can not be memoized.

deflate

public BasicInflatable<WeightedAverageStateFactoryImpl> deflate()

Specified by:

deflate in interface BasicDeflatable<WeightedAverageStateFactoryImpl>

toString

public String toString()

Overrides:

toString in class Object