org.apache.flink.streaming.api.windowing.policy

Enum MultiEvictionPolicy.EvictionStrategy

java.lang.Object

java.lang.Enum<MultiEvictionPolicy.EvictionStrategy>

org.apache.flink.streaming.api.windowing.policy.MultiEvictionPolicy.EvictionStrategy

All Implemented Interfaces:

Serializable, Comparable<MultiEvictionPolicy.EvictionStrategy>

Enclosing class:

MultiEvictionPolicy<DATA>

public static enum MultiEvictionPolicy.EvictionStrategy
extends Enum<MultiEvictionPolicy.EvictionStrategy>

This enum provides the different options for the eviction strategy. You can choose from the following:

• MIN: The number of elements to evict will be the smallest one which is greater than 0 and was returned by any of the given policies. If all policies return 0, the result is 0.
• MAX: The number of elements to evict will be the greatest one which was returned by any of the given policies.
• SUM: The number of elements to evict will be the sum of all values returned by the nested eviction policies.
• PRIORITY: Depending on the order in which the policies have been passed to the constructor, the first return value greater than 0 will be the the number of elements to evict. If all policies return 0, the result is 0.

Enum Constant Summary

Enum Constants

Enum Constant and Description
MAX
MIN
PRIORITY
SUM

Method Summary

Modifier and Type	Method and Description
static MultiEvictionPolicy.EvictionStrategy	valueOf(String name) Returns the enum constant of this type with the specified name.
static MultiEvictionPolicy.EvictionStrategy[]	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

MIN

public static final MultiEvictionPolicy.EvictionStrategy MIN

MAX

public static final MultiEvictionPolicy.EvictionStrategy MAX

SUM

public static final MultiEvictionPolicy.EvictionStrategy SUM

PRIORITY

public static final MultiEvictionPolicy.EvictionStrategy PRIORITY

Method Detail

values

public static MultiEvictionPolicy.EvictionStrategy[] 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 (MultiEvictionPolicy.EvictionStrategy c : MultiEvictionPolicy.EvictionStrategy.values())
    System.out.println(c);

Returns:

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

valueOf

public static MultiEvictionPolicy.EvictionStrategy 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