com.espertech.esper.epl.expression.baseagg
Interface ExprAggregateNode

All Superinterfaces:

ExprEvaluator, ExprNode, ExprValidator, MetaDefItem, java.io.Serializable

All Known Implementing Classes:

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

public interface ExprAggregateNode
extends ExprEvaluator, ExprNode

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

Method Summary

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()