org.apache.flink.cep.nfa.aftermatch

Class SkipToFirstStrategy

java.lang.Object

org.apache.flink.cep.nfa.aftermatch.AfterMatchSkipStrategy

org.apache.flink.cep.nfa.aftermatch.SkipToFirstStrategy

All Implemented Interfaces:

Serializable

public final class SkipToFirstStrategy
extends AfterMatchSkipStrategy

Discards every partial match that started before the first event of emitted match mapped to *PatternName*.

See Also:

Serialized Form

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object o)
Optional<String>	getPatternName() Name of pattern that processing will be skipped to.
protected EventId	getPruningId(Collection<Map<String,List<EventId>>> match) Retrieves event id of the pruning element from the given match based on the strategy.
int	hashCode()
boolean	isSkipStrategy() Tells if the strategy may skip some matches.
protected boolean	shouldPrune(EventId startEventID, EventId pruningId) Tells if the partial/completed match starting at given id should be prunned by given pruningId.
org.apache.flink.cep.nfa.aftermatch.SkipToElementStrategy	throwExceptionOnMiss() Enables throwing exception if no events mapped to the *PatternName*.
String	toString()

Methods inherited from class org.apache.flink.cep.nfa.aftermatch.AfterMatchSkipStrategy

noSkip, prune, skipPastLastEvent, skipToFirst, skipToLast, skipToNext

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Method Detail

throwExceptionOnMiss

public org.apache.flink.cep.nfa.aftermatch.SkipToElementStrategy throwExceptionOnMiss()

Enables throwing exception if no events mapped to the *PatternName*. If not enabled and no events were mapped, NoSkipStrategy will be used

toString

public String toString()

Overrides:

toString in class Object

isSkipStrategy

public boolean isSkipStrategy()

Description copied from class: AfterMatchSkipStrategy

Tells if the strategy may skip some matches.

Specified by:

isSkipStrategy in class AfterMatchSkipStrategy

Returns:

false if the strategy is NO_SKIP strategy

shouldPrune

protected boolean shouldPrune(EventId startEventID,
                              EventId pruningId)

Description copied from class: AfterMatchSkipStrategy

Tells if the partial/completed match starting at given id should be prunned by given pruningId.

Specified by:

shouldPrune in class AfterMatchSkipStrategy

Parameters:

startEventID - starting event id of a partial/completed match

pruningId - pruningId calculated by this strategy

Returns:

true if the match should be pruned

getPruningId

protected EventId getPruningId(Collection<Map<String,List<EventId>>> match)

Description copied from class: AfterMatchSkipStrategy

Retrieves event id of the pruning element from the given match based on the strategy.

Specified by:

getPruningId in class AfterMatchSkipStrategy

Parameters:

match - match corresponding to which should the pruning happen

Returns:

pruning event id

getPatternName

public Optional<String> getPatternName()

Description copied from class: AfterMatchSkipStrategy

Name of pattern that processing will be skipped to.

Overrides:

getPatternName in class AfterMatchSkipStrategy

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object