progress.message.jclient
Class DeliveryMode

java.lang.Object
  progress.message.jclient.DeliveryMode

public final class DeliveryMode
extends java.lang.Object

This class defines the message delivery mode(s) specific to Progress SonicMQ

Version:

1.00, 10/9/99

Author:

Perry Yin

Field Summary

static int	DISCARDABLE This mode is essentially another type of non-persistent delivery.
static int	NON_PERSISTENT_ASYNC Deprecated.
static int	NON_PERSISTENT_REPLICATED This delivery mode is used with fault-tolerant connections.
static int	NON_PERSISTENT_SYNC Deprecated.

Constructor Summary

DeliveryMode()

Method Summary

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

NON_PERSISTENT_ASYNC

public static final int NON_PERSISTENT_ASYNC

Deprecated.

In this mode, non-persistent messages are published asynchronously. The sender does not block to await acknowledgement from message server. Messages can be lost if client fails.

NON_PERSISTENT_SYNC

public static final int NON_PERSISTENT_SYNC

Deprecated.

In this mode, non-persistent messages are published synchronously. The sender blocks until acknowledgement is received from messge broker. Only use if security is disabled.

DISCARDABLE

public static final int DISCARDABLE

This mode is essentially another type of non-persistent delivery. It can only be used by TopicPublishers and non-transacted sessions. It tells message server to discard messages for slow receivers that would otherwise block the sender.

NON_PERSISTENT_REPLICATED

public static final int NON_PERSISTENT_REPLICATED

This delivery mode is used with fault-tolerant connections. In this mode, non-persistent messages are protected from broker failures by being replicated to a standby broker. This delivery mode also ensures once-and-only-once deliver to fault-tolerant subscribers (both durable and non-durable) provided that after a failure the subscriber either successfully resumes its connection at the same broker or fails over to the standby broker.

Constructor Detail

DeliveryMode

public DeliveryMode()