com.espertech.esper.epl.expression.core

Interface ExprEvaluator

All Known Subinterfaces:

ExprAggregateNode, ExprIdentNodeEvaluator, ExprNodeScriptEvaluator, ExprTypableReturnEval

All Known Implementing Classes:

BindProcessorEvaluatorStreamTable, BindProcessorStream, EngineImportApplicationDotMethodPointInsideRectange.PointIntersectsRectangleEvaluator, EngineImportApplicationDotMethodRectangeIntersectsRectangle.RectangleIntersectsRectangleEvaluator, ExprAggCountMinSketchNode, ExprAggMultiFunctionLinearAccessNode, ExprAggMultiFunctionSortedMinMaxByNode, ExprAggregateNodeBase, ExprAggregateNodeGroupKey, ExprAndNodeEval, ExprArrayNodeForgeEval, ExprAvedevNode, ExprAvgNode, ExprBetweenNodeForgeEval, ExprBitWiseNodeForgeEval, ExprCaseNodeForgeEvalSyntax1, ExprCaseNodeForgeEvalSyntax2, ExprCaseNodeForgeEvalTypable, ExprCastNodeConstEval, ExprCastNodeForgeConstEval, ExprCastNodeForgeNonConstEval, ExprCastNodeNonConstEval, ExprCoalesceNodeForgeEval, ExprConcatNodeEvalThreadLocal, ExprConcatNodeEvalWNew, ExprConcatNodeForgeEvalThreadLocal, ExprConcatNodeForgeEvalWNew, ExprConstantNodeImpl, ExprContextPropertyNodeImpl, ExprCountEverNode, ExprCountNode, ExprCurrentEvaluationContextNode, ExprDeclaredForgeBase, ExprDeclaredForgeConstant, ExprDeclaredForgeNoRewrite, ExprDeclaredForgeRewrite, ExprDotNodeForgePropertyExprEvalIndexed, ExprDotNodeForgePropertyExprEvalMapped, ExprDotNodeForgeRootChildEval, ExprDotNodeForgeStaticMethodEval, ExprDotNodeForgeStreamEvalEventBean, ExprDotNodeForgeStreamEvalMethod, ExprDotNodeForgeTransposeAsStreamEval, ExprDotNodeForgeVariableEval, ExprEqualsAllAnyNodeForgeEvalAllNoColl, ExprEqualsAllAnyNodeForgeEvalAllWColl, ExprEqualsAllAnyNodeForgeEvalAnyNoColl, ExprEqualsAllAnyNodeForgeEvalAnyWColl, ExprEqualsNodeForgeCoercionEval, ExprEqualsNodeForgeNCEvalEquals, ExprEqualsNodeForgeNCEvalIs, ExprEvaluatorStreamDTProp, ExprEvaluatorStreamDTPropFragment, ExprFirstEverNode, ExprGroupingIdNode, ExprGroupingNode, ExprIdentNodeEvaluatorContext, ExprIdentNodeEvaluatorImpl, ExprIdentNodeEvaluatorLogging, ExprInNodeForgeEvalNoColl, ExprInNodeForgeEvalWColl, ExprInstanceofNodeForgeEval, ExprIStreamNode, ExprLambdaGoesNode, ExprLastEverNode, ExprLeavingAggNode, ExprLikeNodeForgeConstEval, ExprLikeNodeFormNonconstEval, ExprMathNodeForgeEval, ExprMedianNode, ExprMinMaxAggrNode, ExprMinMaxRowNodeForgeEval, ExprNamedParameterNodeImpl, ExprNewInstanceNodeForgeEval, ExprNewStructNodeForgeEval, ExprNodeScriptEvalBase, ExprNodeScriptEvalJSR223, ExprNodeScriptEvalMVEL, ExprNodeUtilExprMethodContext, ExprNodeUtilExprStreamNumEnumCollEval, ExprNodeUtilExprStreamNumEnumSingleEval, ExprNodeUtilExprStreamNumEvent, ExprNodeUtilExprStreamNumEventTable, ExprNodeUtilExprStreamNumUnd, ExprNodeUtilUnderlyingEvaluator, ExprNodeUtilUnderlyingEvaluatorTable, ExprNodeValidated, ExprNotNode, ExprNthAggNode, ExprNumberSetCronParam, ExprNumberSetFrequency, ExprNumberSetList, ExprNumberSetRange, ExprOrderedExpr, ExprOrNodeEval, ExprPlugInAggMultiFunctionNode, ExprPlugInAggNode, ExprPlugInSingleRowNodeForgeConst, ExprPreviousMatchRecognizeNode, ExprPreviousNode, ExprPriorNode, ExprPropertyExistsNode, ExprRateAggNode, ExprRegexpNodeForgeConstEval, ExprRegexpNodeForgeNonconstEval, ExprRelationalOpAllAnyNodeForgeEval, ExprRelationalOpNodeForgeEval, ExprStddevNode, ExprStreamUnderlyingNodeImpl, ExprSubselectAllSomeAnyNode, ExprSubselectExistsNode, ExprSubselectInNode, ExprSubselectNode, ExprSubselectRowNode, ExprSumNode, ExprTableAccessNodeKeys, ExprTableAccessNodeSubprop, ExprTableAccessNodeSubpropAccessor, ExprTableAccessNodeTopLevel, ExprTableExprEvaluatorAccess, ExprTableExprEvaluatorBase, ExprTableExprEvaluatorMethod, ExprTableIdentNodeSubpropAccessor, ExprTimestampNode, ExprTypedNoEvalNode, ExprTypeofNode.FragmentTypeEval, ExprTypeofNode.StreamEventTypeEval, ExprTypeofNodeForgeFragmentType, ExprTypeofNodeForgeStreamEvent, ExprVariableNodeImpl, ExprWildcardImpl, PropertyDotNonLambdaForge, PropertyDotNonLambdaFragmentForge, PropertyDotNonLambdaIndexedForgeEval, PropertyDotNonLambdaMappedForgeEval, SelectExprInsertEventBeanFactory.ExprForgeJoinWildcard, SelectExprProcessorEnumerationAtBeanCollEval, SelectExprProcessorEnumerationAtBeanCollTableEval, SelectExprProcessorEnumerationAtBeanSingleEval, SelectExprProcessorEnumerationCollEval, SelectExprProcessorEnumerationCollEvalFirstRow, SelectExprProcessorEnumerationSingleToCollEval, SelectExprProcessorEvalByGetter, SelectExprProcessorEvalByGetterFragment, SelectExprProcessorEvalStreamInsertNamedWindow, SelectExprProcessorEvalStreamInsertTable, SelectExprProcessorEvalStreamInsertUnd, SelectExprProcessorTypableMapEval, SelectExprProcessorTypableMultiEval, SelectExprProcessorTypableMultiEvalFirstRow, SelectExprProcessorTypableSingleEval, SelectExprProcessorTypableSingleEvalSingleRow

public interface ExprEvaluator

Interface for evaluating of an event tuple.

Method Summary

Modifier and Type	Method and Description
Object	evaluate(EventBean[] eventsPerStream, boolean isNewData, ExprEvaluatorContext context) Evaluate event tuple and return result.

Method Detail

evaluate

Object evaluate(EventBean[] eventsPerStream,
                boolean isNewData,
                ExprEvaluatorContext context)

Evaluate event tuple and return result.

Parameters:

eventsPerStream - - event tuple

isNewData - - indicates whether we are dealing with new data (istream) or old data (rstream)

context - context for expression evaluation

Returns:

evaluation result, a boolean value for OR/AND-type evalution nodes.