Package org.apache.flink.cep.nfa.aftermatch

Class SkipPastLastStrategy

java.lang.Object

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

org.apache.flink.cep.nfa.aftermatch.SkipPastLastStrategy

All Implemented Interfaces:

Serializable

public final class SkipPastLastStrategy
extends AfterMatchSkipStrategy

Discards every partial match that started before emitted match ended.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
static SkipPastLastStrategy	INSTANCE

Method Summary

Modifier and Type	Method	Description
protected EventId	getPruningId(Collection<Map<String,List<EventId>>> match)	Retrieves event id of the pruning element from the given match based on the strategy.
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.
String	toString()

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

getPatternName, noSkip, prune, skipPastLastEvent, skipToFirst, skipToLast, skipToNext

Methods inherited from class java.lang.Object

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

Field Detail

INSTANCE

public static final SkipPastLastStrategy INSTANCE

Method Detail

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

toString

public String toString()

Overrides:

toString in class Object

isSkipStrategy

public final 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 final 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