com.espertech.esper.pattern

Class EvalFilterFactoryNode

java.lang.Object

com.espertech.esper.pattern.EvalNodeFactoryBase

com.espertech.esper.pattern.EvalFilterFactoryNode

All Implemented Interfaces:

EvalFactoryNode, Serializable

public class EvalFilterFactoryNode
extends EvalNodeFactoryBase

This class represents a filter of events in the evaluation tree representing any event expressions.

See Also:

Serialized Form

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	EvalFilterFactoryNode(FilterSpecRaw filterSpecification, String eventAsName, Integer consumptionLevel) Constructor.

Method Summary

Modifier and Type	Method and Description
Integer	getConsumptionLevel()
String	getEventAsName() Returns the tag for any matching events to this filter, or null since tags are optional.
int	getEventAsTagNumber()
FilterSpecCompiled	getFilterSpec() Returns filter specification.
PatternExpressionPrecedenceEnum	getPrecedence() Returns precendence.
FilterSpecRaw	getRawFilterSpec() Returns the raw (unoptimized/validated) filter definition.
boolean	isFilterChildNonQuitting()
boolean	isStateful()
EvalNode	makeEvalNode(PatternAgentInstanceContext agentInstanceContext, EvalNode parentNode)
void	setEventAsTagNumber(int eventAsTagNumber)
void	setFilterSpec(FilterSpecCompiled filterSpec) Sets a validated and optimized filter specification
void	toPrecedenceFreeEPL(StringWriter writer)
String	toString()

Methods inherited from class com.espertech.esper.pattern.EvalNodeFactoryBase

addChildNode, addChildNodes, getChildNodes, getFactoryNodeId, setFactoryNodeId, toEPL

Methods inherited from class java.lang.Object

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

Constructor Detail

EvalFilterFactoryNode

protected EvalFilterFactoryNode(FilterSpecRaw filterSpecification,
                                String eventAsName,
                                Integer consumptionLevel)

Constructor.

Parameters:

filterSpecification - specifies the filter properties

eventAsName - is the name to use for adding matching events to the MatchedEventMap table used when indicating truth value of true.

consumptionLevel - when using @consume

Method Detail

makeEvalNode

public EvalNode makeEvalNode(PatternAgentInstanceContext agentInstanceContext,
                             EvalNode parentNode)

Specified by:

makeEvalNode in interface EvalFactoryNode

Specified by:

makeEvalNode in class EvalNodeFactoryBase

getRawFilterSpec

public FilterSpecRaw getRawFilterSpec()

Returns the raw (unoptimized/validated) filter definition.

Returns:

filter def

getFilterSpec

public final FilterSpecCompiled getFilterSpec()

Returns filter specification.

Returns:

filter definition

setFilterSpec

public void setFilterSpec(FilterSpecCompiled filterSpec)

Sets a validated and optimized filter specification

Parameters:

filterSpec - is the optimized filter

getEventAsName

public final String getEventAsName()

Returns the tag for any matching events to this filter, or null since tags are optional.

Returns:

tag string for event

getConsumptionLevel

public Integer getConsumptionLevel()

toString

public final String toString()

Overrides:

toString in class Object

isFilterChildNonQuitting

public boolean isFilterChildNonQuitting()

getEventAsTagNumber

public int getEventAsTagNumber()

setEventAsTagNumber

public void setEventAsTagNumber(int eventAsTagNumber)

isStateful

public boolean isStateful()

toPrecedenceFreeEPL

public void toPrecedenceFreeEPL(StringWriter writer)

Specified by:

toPrecedenceFreeEPL in class EvalNodeFactoryBase

getPrecedence

public PatternExpressionPrecedenceEnum getPrecedence()

Description copied from interface: EvalFactoryNode

Returns precendence.

Returns:

precendence