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

Class ExprMinMaxRowNodeForgeEval

java.lang.Object

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

All Implemented Interfaces:

ExprEvaluator

public class ExprMinMaxRowNodeForgeEval
extends Object
implements ExprEvaluator

Represents the MAX(a,b) and MIN(a,b) functions is an expression tree.

Field Summary

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

EPTYPE, EPTYPEARRAY

Constructor Summary

Constructors

Constructor	Description
ExprMinMaxRowNodeForgeEval(ExprMinMaxRowNodeForge forge, ExprEvaluator[] evaluators, ExprForge[] forges)

Method Summary

Modifier and Type	Method	Description
static CodegenExpression	codegen(ExprMinMaxRowNodeForge forge, CodegenMethodScope codegenMethodScope, ExprForgeCodegenSymbol exprSymbol, CodegenClassScope codegenClassScope)
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 Details

ExprMinMaxRowNodeForgeEval

public ExprMinMaxRowNodeForgeEval(ExprMinMaxRowNodeForge forge,
 ExprEvaluator[] evaluators,
 ExprForge[] forges)

Method Details

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(ExprMinMaxRowNodeForge forge,
 CodegenMethodScope codegenMethodScope,
 ExprForgeCodegenSymbol exprSymbol,
 CodegenClassScope codegenClassScope)