com.espertech.esper.epl.expression.baseagg

Interface ExprAggregateNode

All Superinterfaces:

ExprEvaluator, ExprNode, ExprValidator, MetaDefItem, Serializable

All Known Implementing Classes:

ExprAggCountMinSketchNode, ExprAggMultiFunctionLinearAccessNode, ExprAggMultiFunctionSortedMinMaxByNode, ExprAggregateNodeBase, ExprAvedevNode, ExprAvgNode, ExprCountEverNode, ExprCountNode, ExprFirstEverNode, ExprLastEverNode, ExprLeavingAggNode, ExprMedianNode, ExprMinMaxAggrNode, ExprNthAggNode, ExprPlugInAggMultiFunctionNode, ExprPlugInAggNode, ExprRateAggNode, ExprStddevNode, ExprSumNode

public interface ExprAggregateNode
extends ExprEvaluator, ExprNode

Base expression node that represents an aggregation function such as 'sum' or 'count'.

Method Summary

Modifier and Type	Method and Description
AggregationMethodFactory	getFactory()
ExprAggregateLocalGroupByDesc	getOptionalLocalGroupBy()
ExprNode[]	getPositionalParams()
boolean	isDistinct()
void	setAggregationResultFuture(AggregationResultFuture aggregationResultFuture, int column)
void	validatePositionals()

Methods inherited from interface com.espertech.esper.epl.expression.core.ExprEvaluator

evaluate, getType

Methods inherited from interface com.espertech.esper.epl.expression.core.ExprNode

accept, accept, acceptChildnodes, addChildNode, addChildNodes, equalsNode, getChildNodes, getExprEvaluator, getPrecedence, isConstantResult, replaceUnlistedChildNode, setChildNode, setChildNodes, toEPL

Methods inherited from interface com.espertech.esper.epl.expression.core.ExprValidator

validate

Method Detail

getFactory

AggregationMethodFactory getFactory()

setAggregationResultFuture

void setAggregationResultFuture(AggregationResultFuture aggregationResultFuture,
                                int column)

isDistinct

boolean isDistinct()

getOptionalLocalGroupBy

ExprAggregateLocalGroupByDesc getOptionalLocalGroupBy()

validatePositionals

void validatePositionals()
                  throws ExprValidationException

Throws:

ExprValidationException

getPositionalParams

ExprNode[] getPositionalParams()