com.espertech.esper.epl.core.select

Class SelectExprProcessorEvalByGetterFragment

java.lang.Object

com.espertech.esper.epl.core.select.SelectExprProcessorEvalByGetterFragment

All Implemented Interfaces:

ExprEvaluator, ExprForge, ExprNodeRenderable

public class SelectExprProcessorEvalByGetterFragment
extends java.lang.Object
implements ExprForge, ExprEvaluator, ExprNodeRenderable

Constructor Summary

Constructors

Constructor and Description
SelectExprProcessorEvalByGetterFragment(int streamNum, EventPropertyGetterSPI getter, java.lang.Class returnType, FragmentEventType fragmentType)

Method Summary

Modifier and Type	Method and Description
java.lang.Object	evaluate(EventBean[] eventsPerStream, boolean isNewData, ExprEvaluatorContext exprEvaluatorContext) Evaluate event tuple and return result.
CodegenExpression	evaluateCodegen(java.lang.Class requiredType, CodegenMethodScope codegenMethodScope, ExprForgeCodegenSymbol exprSymbol, CodegenClassScope codegenClassScope)
ExprForgeComplexityEnum	getComplexity()
java.lang.Class	getEvaluationType()
ExprEvaluator	getExprEvaluator()
ExprNodeRenderable	getForgeRenderable()
EventPropertyGetterSPI	getGetter()
int	getStreamNum()
void	toEPL(java.io.StringWriter writer, ExprPrecedenceEnum parentPrecedence)

Methods inherited from class java.lang.Object

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

Constructor Detail

SelectExprProcessorEvalByGetterFragment

public SelectExprProcessorEvalByGetterFragment(int streamNum,
                                               EventPropertyGetterSPI getter,
                                               java.lang.Class returnType,
                                               FragmentEventType fragmentType)

Method Detail

evaluate

public java.lang.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.

evaluateCodegen

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

Specified by:

evaluateCodegen in interface ExprForge

getComplexity

public ExprForgeComplexityEnum getComplexity()

Specified by:

getComplexity in interface ExprForge

getGetter

public EventPropertyGetterSPI getGetter()

getStreamNum

public int getStreamNum()

getExprEvaluator

public ExprEvaluator getExprEvaluator()

Specified by:

getExprEvaluator in interface ExprForge

getEvaluationType

public java.lang.Class getEvaluationType()

Specified by:

getEvaluationType in interface ExprForge

getForgeRenderable

public ExprNodeRenderable getForgeRenderable()

Specified by:

getForgeRenderable in interface ExprForge

toEPL

public void toEPL(java.io.StringWriter writer,
                  ExprPrecedenceEnum parentPrecedence)

Specified by:

toEPL in interface ExprNodeRenderable