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

Class ExprEvalUnderlyingEvaluatorTable

java.lang.Object

com.espertech.esper.common.internal.epl.expression.etc.ExprEvalUnderlyingEvaluatorTable

All Implemented Interfaces:

ExprEvaluator, ExprForge

public class ExprEvalUnderlyingEvaluatorTable
extends Object
implements ExprEvaluator, ExprForge

Field Summary

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

EPTYPE, EPTYPEARRAY

Constructor Summary

Constructors

Constructor	Description
ExprEvalUnderlyingEvaluatorTable(int streamNum, EPTypeClass resultType, TableMetaData tableMetadata)

Method Summary

Modifier and Type	Method	Description
Object	evaluate(EventBean[] eventsPerStream, boolean isNewData, ExprEvaluatorContext context)	Evaluate event tuple and return result.
CodegenExpression	evaluateCodegen(EPTypeClass requiredType, CodegenMethodScope parent, ExprForgeCodegenSymbol exprSymbol, CodegenClassScope codegenClassScope)
EPTypeClass	getEvaluationType()
ExprEvaluator	getExprEvaluator()
ExprForgeConstantType	getForgeConstantType()
ExprNodeRenderable	getForgeRenderable()

Methods inherited from class java.lang.Object

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

Constructor Details

ExprEvalUnderlyingEvaluatorTable

public ExprEvalUnderlyingEvaluatorTable(int streamNum,
 EPTypeClass resultType,
 TableMetaData tableMetadata)

Method Details

getExprEvaluator

public ExprEvaluator getExprEvaluator()

Specified by:

getExprEvaluator in interface ExprForge

getEvaluationType

public EPTypeClass getEvaluationType()

Specified by:

getEvaluationType in interface ExprForge

getForgeRenderable

public ExprNodeRenderable getForgeRenderable()

Specified by:

getForgeRenderable in interface ExprForge

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.

evaluateCodegen

public CodegenExpression evaluateCodegen(EPTypeClass requiredType,
 CodegenMethodScope parent,
 ExprForgeCodegenSymbol exprSymbol,
 CodegenClassScope codegenClassScope)

Specified by:

evaluateCodegen in interface ExprForge

getForgeConstantType

public ExprForgeConstantType getForgeConstantType()

Specified by:

getForgeConstantType in interface ExprForge