com.espertech.esper.common.internal.epl.expression.core

Class ExprNodeUtilityEvaluate

java.lang.Object

com.espertech.esper.common.internal.epl.expression.core.ExprNodeUtilityEvaluate

public class ExprNodeUtilityEvaluate
extends Object

Constructor Summary

Constructors

Constructor and Description
ExprNodeUtilityEvaluate()

Method Summary

Modifier and Type	Method and Description
static boolean	applyFilterExpression(ExprEvaluator filter, EventBean[] eventsPerStream, ExprEvaluatorContext exprEvaluatorContext) Apply a filter expression returning a pass indicator.
static EventBean[]	applyFilterExpression(ExprEvaluator filter, EventBean streamZeroEvent, EventBean[] streamOneEvents, ExprEvaluatorContext exprEvaluatorContext) Apply a filter expression.
static void	applyFilterExpressionIterable(Iterator<EventBean> iterator, ExprEvaluator filterExpression, ExprEvaluatorContext exprEvaluatorContext, Collection<EventBean> eventsInWindow)
static Object[]	evaluateExpressions(ExprEvaluator[] parameters, ExprEvaluatorContext exprEvaluatorContext)
static Object	evaluateValidationTimeNoStreams(ExprEvaluator evaluator, ExprEvaluatorContext context, String expressionName)

Methods inherited from class java.lang.Object

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

Constructor Detail

ExprNodeUtilityEvaluate

public ExprNodeUtilityEvaluate()

Method Detail

evaluateValidationTimeNoStreams

public static Object evaluateValidationTimeNoStreams(ExprEvaluator evaluator,
                                                     ExprEvaluatorContext context,
                                                     String expressionName)
                                              throws ExprValidationException

Throws:

ExprValidationException

applyFilterExpressionIterable

public static void applyFilterExpressionIterable(Iterator<EventBean> iterator,
                                                 ExprEvaluator filterExpression,
                                                 ExprEvaluatorContext exprEvaluatorContext,
                                                 Collection<EventBean> eventsInWindow)

applyFilterExpression

public static EventBean[] applyFilterExpression(ExprEvaluator filter,
                                                EventBean streamZeroEvent,
                                                EventBean[] streamOneEvents,
                                                ExprEvaluatorContext exprEvaluatorContext)

Apply a filter expression.

Parameters:

filter - expression

streamZeroEvent - the event that represents stream zero

streamOneEvents - all events thate are stream one events

exprEvaluatorContext - context for expression evaluation

Returns:

filtered stream one events

applyFilterExpression

public static boolean applyFilterExpression(ExprEvaluator filter,
                                            EventBean[] eventsPerStream,
                                            ExprEvaluatorContext exprEvaluatorContext)

Apply a filter expression returning a pass indicator.

Parameters:

filter - to apply

eventsPerStream - events per stream

exprEvaluatorContext - context for expression evaluation

Returns:

pass indicator

evaluateExpressions

public static Object[] evaluateExpressions(ExprEvaluator[] parameters,
                                           ExprEvaluatorContext exprEvaluatorContext)