com.espertech.esper.epl.expression.prev
Class ExprPreviousEvalStrategyPrev

java.lang.Object
  com.espertech.esper.epl.expression.prev.ExprPreviousEvalStrategyPrev

All Implemented Interfaces:

ExprPreviousEvalStrategy

public class ExprPreviousEvalStrategyPrev
extends java.lang.Object
implements ExprPreviousEvalStrategy

Constructor Summary

ExprPreviousEvalStrategyPrev(int streamNumber, ExprEvaluator indexNode, ExprEvaluator evalNode, RandomAccessByIndexGetter randomAccessGetter, RelativeAccessByEventNIndexGetter relativeAccessGetter, boolean constantIndex, java.lang.Integer constantIndexNumber, boolean tail)

Method Summary

java.lang.Object	evaluate(EventBean[] eventsPerStream, ExprEvaluatorContext exprEvaluatorContext)
java.util.Collection<EventBean>	evaluateGetCollEvents(EventBean[] eventsPerStream, ExprEvaluatorContext context)
java.util.Collection	evaluateGetCollScalar(EventBean[] eventsPerStream, ExprEvaluatorContext context)
EventBean	evaluateGetEventBean(EventBean[] eventsPerStream, ExprEvaluatorContext context)

Methods inherited from class java.lang.Object

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

Constructor Detail

ExprPreviousEvalStrategyPrev

public ExprPreviousEvalStrategyPrev(int streamNumber,
                                    ExprEvaluator indexNode,
                                    ExprEvaluator evalNode,
                                    RandomAccessByIndexGetter randomAccessGetter,
                                    RelativeAccessByEventNIndexGetter relativeAccessGetter,
                                    boolean constantIndex,
                                    java.lang.Integer constantIndexNumber,
                                    boolean tail)

Method Detail

evaluate

public java.lang.Object evaluate(EventBean[] eventsPerStream,
                                 ExprEvaluatorContext exprEvaluatorContext)

Specified by:

evaluate in interface ExprPreviousEvalStrategy

evaluateGetEventBean

public EventBean evaluateGetEventBean(EventBean[] eventsPerStream,
                                      ExprEvaluatorContext context)

Specified by:

evaluateGetEventBean in interface ExprPreviousEvalStrategy

evaluateGetCollEvents

public java.util.Collection<EventBean> evaluateGetCollEvents(EventBean[] eventsPerStream,
                                                             ExprEvaluatorContext context)

Specified by:

evaluateGetCollEvents in interface ExprPreviousEvalStrategy

evaluateGetCollScalar

public java.util.Collection evaluateGetCollScalar(EventBean[] eventsPerStream,
                                                  ExprEvaluatorContext context)

Specified by:

evaluateGetCollScalar in interface ExprPreviousEvalStrategy