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

Class ExprEventIdentityEqualsNodeEval

java.lang.Object

com.espertech.esper.common.internal.epl.expression.funcs.ExprEventIdentityEqualsNodeEval

All Implemented Interfaces:

ExprEvaluator

public class ExprEventIdentityEqualsNodeEval
extends Object
implements ExprEvaluator

Field Summary

Fields inherited from interface com.espertech.esper.common.internal.epl.expression.core.ExprEvaluator

EPTYPE, EPTYPEARRAY

Constructor Summary

Constructors

Constructor and Description
ExprEventIdentityEqualsNodeEval(int streamLeft, int streamRight)

Method Summary

Modifier and Type	Method and Description
Object	evaluate(EventBean[] eventsPerStream, boolean isNewData, ExprEvaluatorContext context) Evaluate event tuple and return result.
static CodegenExpression	evaluateCodegen(ExprEventIdentityEqualsNodeForge forge, CodegenMethodScope parent, ExprForgeCodegenSymbol symbols, CodegenClassScope classScope)

Methods inherited from class java.lang.Object

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

Constructor Detail

ExprEventIdentityEqualsNodeEval

public ExprEventIdentityEqualsNodeEval(int streamLeft,
                                       int streamRight)

Method Detail

evaluateCodegen

public static CodegenExpression evaluateCodegen(ExprEventIdentityEqualsNodeForge forge,
                                                CodegenMethodScope parent,
                                                ExprForgeCodegenSymbol symbols,
                                                CodegenClassScope classScope)

evaluate

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

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)

context - context for expression evaluation

Returns:

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