com.espertech.esper.epl.core.select.eval

Class EvalSelectStreamBaseMap

java.lang.Object

com.espertech.esper.epl.core.select.eval.EvalSelectStreamBase

com.espertech.esper.epl.core.select.eval.EvalSelectStreamBaseMap

All Implemented Interfaces:

SelectExprProcessor, SelectExprProcessorForge

Direct Known Subclasses:

EvalSelectStreamNoUnderlyingMap, EvalSelectStreamNoUndWEventBeanToObj, EvalSelectStreamWUnderlying

public abstract class EvalSelectStreamBaseMap
extends EvalSelectStreamBase
implements SelectExprProcessorForge, SelectExprProcessor

Field Summary

Fields inherited from class com.espertech.esper.epl.core.select.eval.EvalSelectStreamBase

context, evaluators, isUsingWildcard, namedStreams, resultEventType

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	EvalSelectStreamBaseMap(SelectExprForgeContext selectExprForgeContext, EventType resultEventType, java.util.List<SelectClauseStreamCompiledSpec> namedStreams, boolean usingWildcard)

Method Summary

Modifier and Type	Method and Description
EventBean	process(EventBean[] eventsPerStream, boolean isNewData, boolean isSynthesize, ExprEvaluatorContext exprEvaluatorContext) Computes the select-clause results and returns an event of the result event type that contains, in it's properties, the selected items.
CodegenMethodNode	processCodegen(CodegenMember memberResultEventType, CodegenMember memberEventAdapterService, CodegenMethodScope codegenMethodScope, SelectExprProcessorCodegenSymbol selectSymbol, ExprForgeCodegenSymbol exprSymbol, CodegenClassScope codegenClassScope)
protected abstract EventBean	processSpecific(java.util.Map<java.lang.String,java.lang.Object> props, EventBean[] eventsPerStream, boolean isNewData, ExprEvaluatorContext exprEvaluatorContext)
protected abstract CodegenExpression	processSpecificCodegen(CodegenMember memberResultEventType, CodegenMember memberEventAdapterService, CodegenExpression props, CodegenMethodScope codegenMethodScope, ExprForgeCodegenSymbol exprSymbol, CodegenClassScope codegenClassScope)

Methods inherited from class com.espertech.esper.epl.core.select.eval.EvalSelectStreamBase

getContext, getResultEventType, getSelectExprProcessor

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.core.select.SelectExprProcessorForge

getResultEventType, getSelectExprProcessor

Constructor Detail

EvalSelectStreamBaseMap

protected EvalSelectStreamBaseMap(SelectExprForgeContext selectExprForgeContext,
                                  EventType resultEventType,
                                  java.util.List<SelectClauseStreamCompiledSpec> namedStreams,
                                  boolean usingWildcard)

Method Detail

processSpecific

protected abstract EventBean processSpecific(java.util.Map<java.lang.String,java.lang.Object> props,
                                             EventBean[] eventsPerStream,
                                             boolean isNewData,
                                             ExprEvaluatorContext exprEvaluatorContext)

processSpecificCodegen

protected abstract CodegenExpression processSpecificCodegen(CodegenMember memberResultEventType,
                                                            CodegenMember memberEventAdapterService,
                                                            CodegenExpression props,
                                                            CodegenMethodScope codegenMethodScope,
                                                            ExprForgeCodegenSymbol exprSymbol,
                                                            CodegenClassScope codegenClassScope)

process

public EventBean process(EventBean[] eventsPerStream,
                         boolean isNewData,
                         boolean isSynthesize,
                         ExprEvaluatorContext exprEvaluatorContext)

Description copied from interface: SelectExprProcessor

Computes the select-clause results and returns an event of the result event type that contains, in it's properties, the selected items.

Specified by:

process in interface SelectExprProcessor

Parameters:

eventsPerStream - - is per stream the event

isNewData - - indicates whether we are dealing with new data (istream) or old data (rstream)

isSynthesize - - set to true to indicate that synthetic events are required for an iterator result set

exprEvaluatorContext - context

Returns:

event with properties containing selected items

processCodegen

public CodegenMethodNode processCodegen(CodegenMember memberResultEventType,
                                        CodegenMember memberEventAdapterService,
                                        CodegenMethodScope codegenMethodScope,
                                        SelectExprProcessorCodegenSymbol selectSymbol,
                                        ExprForgeCodegenSymbol exprSymbol,
                                        CodegenClassScope codegenClassScope)

Specified by:

processCodegen in interface SelectExprProcessorForge