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

Class EvalBaseMap

java.lang.Object

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

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

All Implemented Interfaces:

SelectExprProcessor, SelectExprProcessorForge

Direct Known Subclasses:

EvalInsertNoWildcardMap, EvalInsertNoWildcardRevision, EvalInsertWildcardJoin, EvalInsertWildcardRevisionWrapper, EvalInsertWildcardSSWrapper, EvalInsertWildcardSSWrapperRevision, EvalInsertWildcardWrapper, EvalSelectWildcard, EvalSelectWildcardJoin

public abstract class EvalBaseMap
extends EvalBase
implements SelectExprProcessor, SelectExprProcessorForge

Field Summary

Fields

Modifier and Type	Field and Description
protected ExprEvaluator[]	evaluators

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

context, resultEventType

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	EvalBaseMap(SelectExprForgeContext selectExprForgeContext, EventType resultEventType)

Method Summary

Modifier and Type	Method and Description
SelectExprProcessor	getSelectExprProcessor(EngineImportService engineImportService, boolean isFireAndForget, java.lang.String statementName)
protected abstract void	initSelectExprProcessorSpecific(EngineImportService engineImportService, boolean isFireAndForget, java.lang.String statementName)
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, boolean isSynthesize, ExprEvaluatorContext exprEvaluatorContext)
protected abstract CodegenExpression	processSpecificCodegen(CodegenMember memberResultEventType, CodegenMember memberEventAdapterService, CodegenExpression props, CodegenMethodNode methodNode, SelectExprProcessorCodegenSymbol selectEnv, ExprForgeCodegenSymbol exprSymbol, CodegenClassScope codegenClassScope)

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

getEventAdapterService, getResultEventType

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

Field Detail

evaluators

protected ExprEvaluator[] evaluators

Constructor Detail

EvalBaseMap

protected EvalBaseMap(SelectExprForgeContext selectExprForgeContext,
                      EventType resultEventType)

Method Detail

initSelectExprProcessorSpecific

protected abstract void initSelectExprProcessorSpecific(EngineImportService engineImportService,
                                                        boolean isFireAndForget,
                                                        java.lang.String statementName)

processSpecific

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

processSpecificCodegen

protected abstract CodegenExpression processSpecificCodegen(CodegenMember memberResultEventType,
                                                            CodegenMember memberEventAdapterService,
                                                            CodegenExpression props,
                                                            CodegenMethodNode methodNode,
                                                            SelectExprProcessorCodegenSymbol selectEnv,
                                                            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

getSelectExprProcessor

public SelectExprProcessor getSelectExprProcessor(EngineImportService engineImportService,
                                                  boolean isFireAndForget,
                                                  java.lang.String statementName)

Specified by:

getSelectExprProcessor in interface SelectExprProcessorForge