Package software.amazon.awssdk.crt.mqtt5.packets

Enum SubscribePacket.RetainHandlingType

java.lang.Object

java.lang.Enum<SubscribePacket.RetainHandlingType>

software.amazon.awssdk.crt.mqtt5.packets.SubscribePacket.RetainHandlingType

All Implemented Interfaces:

Serializable, Comparable<SubscribePacket.RetainHandlingType>

Enclosing class:

SubscribePacket

public static enum SubscribePacket.RetainHandlingType
extends Enum<SubscribePacket.RetainHandlingType>

Configures how retained messages should be handled when subscribing with a subscription that matches topics with associated retained messages. Enum values match MQTT5 spec encoding values.

Enum Constant Summary

Enum Constants

Enum Constant	Description
DONT_SEND	Subscriptions must not trigger any retained message publishes from the server.
SEND_ON_SUBSCRIBE	The server should always send all retained messages on topics that match a subscription's filter.
SEND_ON_SUBSCRIBE_IF_NEW	The server should send retained messages on topics that match the subscription's filter, but only for the first matching subscription, per session.

Method Summary

Modifier and Type	Method	Description
static SubscribePacket.RetainHandlingType	getEnumValueFromInteger(int value)	Creates a Java RetainHandlingType enum value from a native integer value.
int	getValue()
static SubscribePacket.RetainHandlingType	valueOf(String name)	Returns the enum constant of this type with the specified name.
static SubscribePacket.RetainHandlingType[]	values()	Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

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

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

SEND_ON_SUBSCRIBE

public static final SubscribePacket.RetainHandlingType SEND_ON_SUBSCRIBE

The server should always send all retained messages on topics that match a subscription's filter.

SEND_ON_SUBSCRIBE_IF_NEW

public static final SubscribePacket.RetainHandlingType SEND_ON_SUBSCRIBE_IF_NEW

The server should send retained messages on topics that match the subscription's filter, but only for the first matching subscription, per session.

DONT_SEND

public static final SubscribePacket.RetainHandlingType DONT_SEND

Subscriptions must not trigger any retained message publishes from the server.

Method Detail

values

public static SubscribePacket.RetainHandlingType[] 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 (SubscribePacket.RetainHandlingType c : SubscribePacket.RetainHandlingType.values())
    System.out.println(c);

Returns:

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

valueOf

public static SubscribePacket.RetainHandlingType 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

getValue

public int getValue()

Returns:

The native enum integer value associated with this Java enum value

getEnumValueFromInteger

public static SubscribePacket.RetainHandlingType getEnumValueFromInteger(int value)

Creates a Java RetainHandlingType enum value from a native integer value.

Parameters:

value - native integer value for RetainHandlingType

Returns:

a new RetainHandlingType value