Package com.espertech.esper.common.internal.epl.pattern.observer

Class EvalObserverForgeNode

java.lang.Object

com.espertech.esper.common.internal.epl.pattern.core.EvalForgeNodeBase

com.espertech.esper.common.internal.epl.pattern.observer.EvalObserverForgeNode

All Implemented Interfaces:

EvalForgeNode

public class EvalObserverForgeNode
extends EvalForgeNodeBase

This class represents an observer expression in the evaluation tree representing an pattern expression.

Field Summary

Fields inherited from class com.espertech.esper.common.internal.epl.pattern.core.EvalForgeNodeBase

audit, factoryNodeId

Constructor Summary

Constructors

Constructor	Description
EvalObserverForgeNode(boolean attachPatternText, PatternObserverSpec patternObserverSpec)	Constructor.

Method Summary

Modifier and Type	Method	Description
AppliesTo	appliesTo()
void	collectSelfFilterAndSchedule(Function<Short,CallbackAttribution> callbackAttribution, List<FilterSpecTracked> filters, List<ScheduleHandleTracked> schedules)
PatternObserverSpec	getPatternObserverSpec()	Returns the observer object specification to use for instantiating the observer factory and observer.
PatternExpressionPrecedenceEnum	getPrecedence()	Returns precendence.
protected void	inlineCodegen(CodegenMethod method, SAIFFInitializeSymbol symbols, CodegenClassScope classScope)
protected String	nameOfFactory()
void	setObserverFactory(ObserverForge observerForge)	Supplies the observer factory to the node.
String	toPrecedenceFreeEPL()
void	toPrecedenceFreeEPL(StringWriter writer)
protected EPTypeClass	typeOfFactory()

Methods inherited from class com.espertech.esper.common.internal.epl.pattern.core.EvalForgeNodeBase

addChildNode, addChildNodes, getChildNodes, getFactoryNodeId, isAudit, makeCodegen, setAudit, setFactoryNodeId, setStateMgmtSettings, toEPL

Methods inherited from class java.lang.Object

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

Constructor Details

EvalObserverForgeNode

public EvalObserverForgeNode(boolean attachPatternText,
 PatternObserverSpec patternObserverSpec)

Constructor.

Parameters:

patternObserverSpec - is the factory to use to get an observer instance

attachPatternText - whether to attach EPL subexpression text

Method Details

typeOfFactory

protected EPTypeClass typeOfFactory()

Specified by:

typeOfFactory in class EvalForgeNodeBase

nameOfFactory

protected String nameOfFactory()

Specified by:

nameOfFactory in class EvalForgeNodeBase

inlineCodegen

protected void inlineCodegen(CodegenMethod method,
 SAIFFInitializeSymbol symbols,
 CodegenClassScope classScope)

Specified by:

inlineCodegen in class EvalForgeNodeBase

getPatternObserverSpec

public PatternObserverSpec getPatternObserverSpec()

Returns the observer object specification to use for instantiating the observer factory and observer.

Returns:

observer specification

setObserverFactory

public void setObserverFactory(ObserverForge observerForge)

Supplies the observer factory to the node.

Parameters:

observerForge - is the observer forge

collectSelfFilterAndSchedule

public void collectSelfFilterAndSchedule(Function<Short,CallbackAttribution> callbackAttribution,
 List<FilterSpecTracked> filters,
 List<ScheduleHandleTracked> schedules)

toPrecedenceFreeEPL

public void toPrecedenceFreeEPL(StringWriter writer)

Specified by:

toPrecedenceFreeEPL in class EvalForgeNodeBase

toPrecedenceFreeEPL

public String toPrecedenceFreeEPL()

getPrecedence

public PatternExpressionPrecedenceEnum getPrecedence()

Description copied from interface: EvalForgeNode

Returns precendence.

Returns:

precendence

appliesTo

public AppliesTo appliesTo()

Specified by:

appliesTo in class EvalForgeNodeBase