com.espertech.esper.epl.agg.service
Class AggregationServiceAggExpressionDesc

java.lang.Object
  com.espertech.esper.epl.agg.service.AggregationServiceAggExpressionDesc

public class AggregationServiceAggExpressionDesc
extends java.lang.Object

Constructor Summary

AggregationServiceAggExpressionDesc(ExprAggregateNode aggregationNode, AggregationMethodFactory factory)
Ctor.

Method Summary

void	addEquivalent(ExprAggregateNode aggNodeToAdd) Add an equivalent aggregation function node
void	assignFuture(AggregationResultFuture service) Assigns a future to the expression
ExprAggregateNode	getAggregationNode() Returns the expression.
java.lang.Integer	getColumnNum()
java.util.List<ExprAggregateNode>	getEquivalentNodes() Returns the equivalent aggregation functions.
AggregationMethodFactory	getFactory() Returns the method factory.
void	setColumnNum(java.lang.Integer columnNum) Assigns a column number.

Methods inherited from class java.lang.Object

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

Constructor Detail

AggregationServiceAggExpressionDesc

public AggregationServiceAggExpressionDesc(ExprAggregateNode aggregationNode,
                                           AggregationMethodFactory factory)

Ctor.

Parameters:

aggregationNode - expression

factory - method factory

Method Detail

getEquivalentNodes

public java.util.List<ExprAggregateNode> getEquivalentNodes()

Returns the equivalent aggregation functions.

Returns:

list of agg nodes

getFactory

public AggregationMethodFactory getFactory()

Returns the method factory.

Returns:

factory

setColumnNum

public void setColumnNum(java.lang.Integer columnNum)

Assigns a column number.

Parameters:

columnNum - column number

addEquivalent

public void addEquivalent(ExprAggregateNode aggNodeToAdd)

Add an equivalent aggregation function node

Parameters:

aggNodeToAdd - node to add

getAggregationNode

public ExprAggregateNode getAggregationNode()

Returns the expression.

Returns:

expression

getColumnNum

public java.lang.Integer getColumnNum()

assignFuture

public void assignFuture(AggregationResultFuture service)

Assigns a future to the expression

Parameters:

service - the future