Package org.apache.storm.windowing

Enum EvictionPolicy.Action

java.lang.Object

java.lang.Enum<EvictionPolicy.Action>

org.apache.storm.windowing.EvictionPolicy.Action

All Implemented Interfaces:

Serializable, Comparable<EvictionPolicy.Action>

Enclosing interface:

EvictionPolicy<T,S>

public static enum EvictionPolicy.Action
extends Enum<EvictionPolicy.Action>

The action to be taken when EvictionPolicy.evict(Event) is invoked.

Enum Constant Summary

Enum Constants

Enum Constant	Description
EXPIRE	expire the event and remove it from the queue.
KEEP	don't include in the current window but keep the event in the queue for evaluating as a part of future windows.
PROCESS	process the event in the current window of events.
STOP	stop processing the queue, there cannot be anymore events satisfying the eviction policy.

Method Summary

Modifier and Type	Method	Description
static EvictionPolicy.Action	valueOf(String name)	Returns the enum constant of this type with the specified name.
static EvictionPolicy.Action[]	values()	Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

EXPIRE

public static final EvictionPolicy.Action EXPIRE

expire the event and remove it from the queue.

PROCESS

public static final EvictionPolicy.Action PROCESS

process the event in the current window of events.

KEEP

public static final EvictionPolicy.Action KEEP

don't include in the current window but keep the event in the queue for evaluating as a part of future windows.

STOP

public static final EvictionPolicy.Action STOP

stop processing the queue, there cannot be anymore events satisfying the eviction policy.

Method Detail

values

public static EvictionPolicy.Action[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (EvictionPolicy.Action c : EvictionPolicy.Action.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static EvictionPolicy.Action valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null