JBoss/JMS Message Reference

The message reference is a pointer to the message. It holds one of:

• A hard reference to the message in memory.

• A soft reference with a pointer to the message in an offline store.

To avoid continuous access of the message in the offline store it holds information used in the server, including:

• A link to the queue/topic subscription

• The message id

• The priority

• Whether the message is persistent

• Redelivery information

This is an abstraction of the message, it can also adapt other message types not just jms messages.