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

Class AggregationIndexStateFactory

java.lang.Object

com.illumon.iris.db.v2.by.AggregationIndexStateFactory

All Implemented Interfaces:

BasicDeflatable<AggregationIndexStateFactory>, AggregationStateFactory

Direct Known Subclasses:

AggregationFormulaStateFactory

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

Constructor Summary

Constructors

Constructor	Description
AggregationIndexStateFactory()
AggregationIndexStateFactory(String indexColumnName)

Method Summary

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

Methods inherited from class java.lang.Object

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

Constructor Details

AggregationIndexStateFactory

public AggregationIndexStateFactory()

AggregationIndexStateFactory

public AggregationIndexStateFactory(@Nullable
 String indexColumnName)

Method Details

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<AggregationIndexStateFactory> deflate()

Specified by:

deflate in interface BasicDeflatable<AggregationIndexStateFactory>

getIndexColumnName

public String getIndexColumnName()