com.espertech.esper.epl.expression.core

Class ExprIdentNodeEvaluatorLogging

java.lang.Object

com.espertech.esper.epl.expression.core.ExprIdentNodeEvaluatorImpl

com.espertech.esper.epl.expression.core.ExprIdentNodeEvaluatorLogging

All Implemented Interfaces:

ExprEvaluator, ExprIdentNodeEvaluator

public class ExprIdentNodeEvaluatorLogging
extends ExprIdentNodeEvaluatorImpl

Field Summary

Fields inherited from class com.espertech.esper.epl.expression.core.ExprIdentNodeEvaluatorImpl

returnType

Constructor Summary

Constructors

Constructor and Description
ExprIdentNodeEvaluatorLogging(int streamNum, EventPropertyGetterSPI propertyGetter, java.lang.Class returnType, ExprIdentNode identNode, EventType eventType, boolean optionalEvent, java.lang.String engineURI, java.lang.String propertyName, java.lang.String statementName)

Method Summary

Modifier and Type	Method and Description
CodegenExpression	codegen(java.lang.Class requiredType, CodegenMethodScope codegenMethodScope, ExprForgeCodegenSymbol exprSymbol, CodegenClassScope codegenClassScope)
java.lang.Object	evaluate(EventBean[] eventsPerStream, boolean isNewData, ExprEvaluatorContext exprEvaluatorContext) Evaluate event tuple and return result.

Methods inherited from class com.espertech.esper.epl.expression.core.ExprIdentNodeEvaluatorImpl

evaluatePropertyExists, getCodegenReturnType, getEvaluationType, getGetter, getStreamNum, isContextEvaluated

Methods inherited from class java.lang.Object

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

Constructor Detail

ExprIdentNodeEvaluatorLogging

public ExprIdentNodeEvaluatorLogging(int streamNum,
                                     EventPropertyGetterSPI propertyGetter,
                                     java.lang.Class returnType,
                                     ExprIdentNode identNode,
                                     EventType eventType,
                                     boolean optionalEvent,
                                     java.lang.String engineURI,
                                     java.lang.String propertyName,
                                     java.lang.String statementName)

Method Detail

evaluate

public java.lang.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

Overrides:

evaluate in class ExprIdentNodeEvaluatorImpl

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.

codegen

public CodegenExpression codegen(java.lang.Class requiredType,
                                 CodegenMethodScope codegenMethodScope,
                                 ExprForgeCodegenSymbol exprSymbol,
                                 CodegenClassScope codegenClassScope)

Specified by:

codegen in interface ExprIdentNodeEvaluator

Overrides:

codegen in class ExprIdentNodeEvaluatorImpl