com.espertech.esper.epl.core

Class SelectExprProcessorEvalStreamInsertUnd

java.lang.Object

com.espertech.esper.epl.core.SelectExprProcessorEvalStreamInsertUnd

All Implemented Interfaces:

ExprEvaluator

public class SelectExprProcessorEvalStreamInsertUnd
extends Object
implements ExprEvaluator

Constructor Summary

Constructors

Constructor and Description
SelectExprProcessorEvalStreamInsertUnd(ExprStreamUnderlyingNode undNode, int streamNum, Class returnType)

Method Summary

Modifier and Type	Method and Description
Object	evaluate(EventBean[] eventsPerStream, boolean isNewData, ExprEvaluatorContext exprEvaluatorContext) Evaluate event tuple and return result.
int	getStreamNum()
Class	getType() Returns the type that the node's evaluate method returns an instance of.

Methods inherited from class java.lang.Object

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

Constructor Detail

SelectExprProcessorEvalStreamInsertUnd

public SelectExprProcessorEvalStreamInsertUnd(ExprStreamUnderlyingNode undNode,
                                              int streamNum,
                                              Class returnType)

Method Detail

evaluate

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

Description copied from interface: ExprEvaluator

Evaluate event tuple and return result.

Specified by:

evaluate in interface ExprEvaluator

Parameters:

eventsPerStream - - event tuple

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

exprEvaluatorContext - context for expression evaluation

Returns:

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

getType

public Class getType()

Description copied from interface: ExprEvaluator

Returns the type that the node's evaluate method returns an instance of.

Specified by:

getType in interface ExprEvaluator

Returns:

type returned when evaluated

getStreamNum

public int getStreamNum()