com.migratorydata.client

Enum MigratoryDataMessage.QoS

java.lang.Object

java.lang.Enum<MigratoryDataMessage.QoS>

com.migratorydata.client.MigratoryDataMessage.QoS

All Implemented Interfaces:

Serializable, Comparable<MigratoryDataMessage.QoS>

Enclosing class:

MigratoryDataMessage

public static enum MigratoryDataMessage.QoS
extends Enum<MigratoryDataMessage.QoS>

The quality of service (QoS) levels for MigratoryData messaging.

Enum Constant Summary

Enum Constants

Enum Constant and Description
GUARANTEED The QoS.GUARANTEED should be used for critical messages which will be included in the cache of the MigratoryData cluster.
STANDARD The QoS.STANDARD should be used for noncritical messages which will not be included in the cache of the MigratoryData cluster.

Method Summary

Modifier and Type	Method and Description
int	code()
static MigratoryDataMessage.QoS	valueOf(String name) Returns the enum constant of this type with the specified name.
static MigratoryDataMessage.QoS[]	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

STANDARD

public static final MigratoryDataMessage.QoS STANDARD

The QoS.STANDARD should be used for noncritical messages which will not be included in the cache of the MigratoryData cluster. In this way, after a connection recovery, a client will not receive as part of the recovery process the messages with QoS.STANDARD. <p> Note: This QoS level corresponds to the at-most-once delivery semantics. </p>

GUARANTEED

public static final MigratoryDataMessage.QoS GUARANTEED

The QoS.GUARANTEED should be used for critical messages which will be included in the cache of the MigratoryData cluster. In this way, after a connection recovery, a client will receive as part of the recovery process the messages with QoS.GUARANTEED. <p> Note: This QoS level corresponds to the at-least-once delivery semantics. Also, it might correspond to the exactly-once delivery semantics provided that subscribers are responsible for filtering out duplicate receptions, if it at all matters for the application. Typically, a small buffer containing the identifiers of recently-received messages is sufficient for this task. </p>

Method Detail

values

public static MigratoryDataMessage.QoS[] 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 (MigratoryDataMessage.QoS c : MigratoryDataMessage.QoS.values())
    System.out.println(c);

Returns:

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

valueOf

public static MigratoryDataMessage.QoS 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

code

public int code()