Package org.apache.flink.cep.nfa

Class NFAState

java.lang.Object

org.apache.flink.cep.nfa.NFAState

public class NFAState
extends Object

State kept for a NFA.

Field Summary

Fields

Modifier and Type	Field	Description
static final Comparator<ComputationState>	COMPUTATION_STATE_COMPARATOR

Constructor Summary

Constructors

Constructor	Description
NFAState(Iterable<ComputationState> states)
NFAState(Queue<ComputationState> partialMatches, Queue<ComputationState> completedMatches)

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object o)
Queue<ComputationState>	getCompletedMatches()
Queue<ComputationState>	getPartialMatches()
int	hashCode()
boolean	isNewStartPartialMatch()
boolean	isStateChanged()	Check if the matching status of the NFA has changed so far.
void	resetNewStartPartialMatch()
void	resetStateChanged()	Reset the changed bit checked via isStateChanged() to false.
void	setNewPartialMatches(PriorityQueue<ComputationState> newPartialMatches)
void	setNewStartPartiailMatch()
void	setStateChanged()	Set the changed bit checked via isStateChanged() to true.
String	toString()

Methods inherited from class java.lang.Object

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

Field Details

COMPUTATION_STATE_COMPARATOR

public static final Comparator<ComputationState> COMPUTATION_STATE_COMPARATOR

Constructor Details

NFAState

public NFAState(Iterable<ComputationState> states)

NFAState

public NFAState(Queue<ComputationState> partialMatches,
 Queue<ComputationState> completedMatches)

Method Details

isStateChanged

public boolean isStateChanged()

Check if the matching status of the NFA has changed so far.

Returns:

true if matching status has changed, false otherwise

resetStateChanged

public void resetStateChanged()

Reset the changed bit checked via isStateChanged() to false.

setStateChanged

public void setStateChanged()

Set the changed bit checked via isStateChanged() to true.

getPartialMatches

public Queue<ComputationState> getPartialMatches()

getCompletedMatches

public Queue<ComputationState> getCompletedMatches()

setNewPartialMatches

public void setNewPartialMatches(PriorityQueue<ComputationState> newPartialMatches)

isNewStartPartialMatch

public boolean isNewStartPartialMatch()

resetNewStartPartialMatch

public void resetNewStartPartialMatch()

setNewStartPartiailMatch

public void setNewStartPartiailMatch()

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object