com.espertech.esper.runtime.internal.filtersvcimpl

Interface EventEvaluator

All Known Implementing Classes:

EventTypeIndex, FilterHandleSetNode, FilterParamIndexBase, FilterParamIndexBooleanExpr, FilterParamIndexCompare, FilterParamIndexCompareString, FilterParamIndexDoubleRange, FilterParamIndexDoubleRangeBase, FilterParamIndexDoubleRangeInverted, FilterParamIndexEquals, FilterParamIndexEqualsBase, FilterParamIndexEqualsIs, FilterParamIndexIn, FilterParamIndexLookupableBase, FilterParamIndexNotEquals, FilterParamIndexNotEqualsBase, FilterParamIndexNotEqualsIs, FilterParamIndexNotIn, FilterParamIndexQuadTreeMXCIF, FilterParamIndexQuadTreePointRegion, FilterParamIndexReboolNoValue, FilterParamIndexReboolWithValue, FilterParamIndexStringRange, FilterParamIndexStringRangeBase, FilterParamIndexStringRangeInverted

public interface EventEvaluator

Interface for matching an event instance based on the event's property values to filters, specifically filter parameter constants or ranges.

Method Summary

Modifier and Type	Method and Description
void	getTraverseStatement(EventTypeIndexTraverse traverse, Set<Integer> statementIds, ArrayDeque<FilterItem> evaluatorStack)
void	matchEvent(com.espertech.esper.common.client.EventBean theEvent, Collection<com.espertech.esper.common.internal.filtersvc.FilterHandle> matches, com.espertech.esper.common.internal.epl.expression.core.ExprEvaluatorContext ctx) Perform the matching of an event based on the event property values, adding any callbacks for matches found to the matches list.

Method Detail

matchEvent

void matchEvent(com.espertech.esper.common.client.EventBean theEvent,
                Collection<com.espertech.esper.common.internal.filtersvc.FilterHandle> matches,
                com.espertech.esper.common.internal.epl.expression.core.ExprEvaluatorContext ctx)

Perform the matching of an event based on the event property values, adding any callbacks for matches found to the matches list.

Parameters:

theEvent - is the event object wrapper to obtain event property values from

matches - accumulates the matching filter callbacks

ctx - evaluator context

getTraverseStatement

void getTraverseStatement(EventTypeIndexTraverse traverse,
                          Set<Integer> statementIds,
                          ArrayDeque<FilterItem> evaluatorStack)