com.espertech.esper.epl.expression.ops

Class ExprOrNodeEval

java.lang.Object

com.espertech.esper.epl.expression.ops.ExprOrNodeEval

All Implemented Interfaces:

ExprEvaluator

public class ExprOrNodeEval
extends Object
implements ExprEvaluator

Constructor Summary

Constructors

Constructor and Description
ExprOrNodeEval(ExprOrNode parent, ExprEvaluator[] evaluators)

Method Summary

Modifier and Type	Method and Description
static CodegenExpression	codegen(ExprOrNode parent, CodegenContext context, CodegenParamSetExprPremade params)
Object	evaluate(EventBean[] eventsPerStream, boolean isNewData, ExprEvaluatorContext exprEvaluatorContext) Evaluate event tuple and return result.

Methods inherited from class java.lang.Object

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

Constructor Detail

ExprOrNodeEval

public ExprOrNodeEval(ExprOrNode parent,
                      ExprEvaluator[] evaluators)

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.

codegen

public static CodegenExpression codegen(ExprOrNode parent,
                                        CodegenContext context,
                                        CodegenParamSetExprPremade params)