com.espertech.esper.epl.script

Class ExprNodeScriptEvalMVEL

java.lang.Object

com.espertech.esper.epl.script.ExprNodeScriptEvalBase

com.espertech.esper.epl.script.ExprNodeScriptEvalMVEL

All Implemented Interfaces:

ExprEnumerationEval, ExprEnumerationForge, ExprEvaluator, ExprForge, ExprNodeScriptEvaluator

public class ExprNodeScriptEvalMVEL
extends ExprNodeScriptEvalBase
implements ExprNodeScriptEvaluator

Field Summary

Fields inherited from class com.espertech.esper.epl.script.ExprNodeScriptEvalBase

coercer, eventTypeCollection, names, parameters, parent, returnType, statementName

Constructor Summary

Constructors

Constructor and Description
ExprNodeScriptEvalMVEL(ExprNodeScript parent, java.lang.String statementName, java.lang.String[] names, ExprForge[] parameters, java.lang.Class returnType, EventType eventTypeCollection, java.lang.Object executable)

Method Summary

Modifier and Type	Method and Description
java.lang.Object	evaluate(EventBean[] eventsPerStream, boolean isNewData, ExprEvaluatorContext context) Evaluate event tuple and return result.
java.lang.Object	evaluate(java.lang.Object[] lookupValues, ExprEvaluatorContext context)
CodegenExpression	evaluateCodegen(java.lang.Class requiredType, CodegenMethodScope codegenMethodScope, ExprForgeCodegenSymbol exprSymbol, CodegenClassScope codegenClassScope)
java.lang.Object	evaluateInternal(java.util.Map<java.lang.String,java.lang.Object> paramsList) NOTE: Code-generation-invoked method, method name and parameter order matters
ExprForgeComplexityEnum	getComplexity()
java.lang.Class	getEvaluationType()
ExprEvaluator	getExprEvaluator()
static java.util.Map<java.lang.String,java.lang.Object>	getMVELScriptParamsList(ExprEvaluatorContext context) NOTE: Code-generation-invoked method, method name and parameter order matters

Methods inherited from class com.espertech.esper.epl.script.ExprNodeScriptEvalBase

evaluateGetEventBean, evaluateGetEventBeanCodegen, evaluateGetROCollectionEvents, evaluateGetROCollectionEventsCodegen, evaluateGetROCollectionScalar, evaluateGetROCollectionScalarCodegen, getComponentTypeCollection, getEventTypeCollection, getEventTypeSingle, getExprEvaluatorEnumeration, getForgeRenderable, scriptResultToROCollectionEvents

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.espertech.esper.epl.expression.core.ExprForge

getForgeRenderable

Methods inherited from interface com.espertech.esper.epl.expression.core.ExprEnumerationForge

evaluateGetEventBeanCodegen, evaluateGetROCollectionEventsCodegen, evaluateGetROCollectionScalarCodegen, getComponentTypeCollection, getEventTypeCollection, getEventTypeSingle, getExprEvaluatorEnumeration, getForgeRenderable

Constructor Detail

ExprNodeScriptEvalMVEL

public ExprNodeScriptEvalMVEL(ExprNodeScript parent,
                              java.lang.String statementName,
                              java.lang.String[] names,
                              ExprForge[] parameters,
                              java.lang.Class returnType,
                              EventType eventTypeCollection,
                              java.lang.Object executable)

Method Detail

getExprEvaluator

public ExprEvaluator getExprEvaluator()

Specified by:

getExprEvaluator in interface ExprForge

evaluate

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

Specified by:

evaluateCodegen in interface ExprForge

Specified by:

evaluateCodegen in class ExprNodeScriptEvalBase

getComplexity

public ExprForgeComplexityEnum getComplexity()

Specified by:

getComplexity in interface ExprForge

getEvaluationType

public java.lang.Class getEvaluationType()

Specified by:

getEvaluationType in interface ExprForge

evaluate

public java.lang.Object evaluate(java.lang.Object[] lookupValues,
                                 ExprEvaluatorContext context)

Specified by:

evaluate in interface ExprNodeScriptEvaluator

getMVELScriptParamsList

public static java.util.Map<java.lang.String,java.lang.Object> getMVELScriptParamsList(ExprEvaluatorContext context)

NOTE: Code-generation-invoked method, method name and parameter order matters

Parameters:

context - ctx

Returns:

params

evaluateInternal

public java.lang.Object evaluateInternal(java.util.Map<java.lang.String,java.lang.Object> paramsList)

NOTE: Code-generation-invoked method, method name and parameter order matters

Parameters:

paramsList - params

Returns:

result