Package org.apache.flink.cep.pattern

Class Quantifier

java.lang.Object

org.apache.flink.cep.pattern.Quantifier

public class Quantifier
extends Object

A quantifier describing the Pattern. There are three main groups of Quantifier.

1. Single
2. Looping
3. Times

Each Pattern can be optional and have a Quantifier.ConsumingStrategy. Looping and Times also hava an additional inner consuming strategy that is applied between accepted events in the pattern.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static enum	Quantifier.ConsumingStrategy	Describes strategy for which events are matched in this Pattern.
static enum	Quantifier.QuantifierProperty	Properties that a Quantifier can have.
static class	Quantifier.Times	Describe the times this Pattern can occur.

Method Summary

Modifier and Type	Method	Description
void	combinations()
void	consecutive()
boolean	equals(Object o)
Quantifier.ConsumingStrategy	getConsumingStrategy()
Quantifier.ConsumingStrategy	getInnerConsumingStrategy()
void	greedy()
int	hashCode()
boolean	hasProperty(Quantifier.QuantifierProperty property)
static Quantifier	looping(Quantifier.ConsumingStrategy consumingStrategy)
static Quantifier	one(Quantifier.ConsumingStrategy consumingStrategy)
void	optional()
static Quantifier	times(Quantifier.ConsumingStrategy consumingStrategy)
String	toString()

Methods inherited from class java.lang.Object

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

Method Details

one

public static Quantifier one(Quantifier.ConsumingStrategy consumingStrategy)

looping

public static Quantifier looping(Quantifier.ConsumingStrategy consumingStrategy)

times

public static Quantifier times(Quantifier.ConsumingStrategy consumingStrategy)

hasProperty

public boolean hasProperty(Quantifier.QuantifierProperty property)

getInnerConsumingStrategy

public Quantifier.ConsumingStrategy getInnerConsumingStrategy()

getConsumingStrategy

public Quantifier.ConsumingStrategy getConsumingStrategy()

combinations

public void combinations()

consecutive

public void consecutive()

optional

public void optional()

greedy

public void greedy()

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