Decouple BPMN signal/message elements from implementation using JMS interfaces

Please front the signals/messages jBPM implementation with standard JMS interfaces. This will decouple the BPMN signal/message elements from the jBPM implementation.

BPMN signal/message specifications and JMS specifications are almost a perfect match. BPMN Signals behave like JMS Topic Messages and BPMN Messages behave like JMS Queue Messages.

The benefits are:

• users can plug in their own JMS provider and integrate jBPM with enterprise messaging

• clean separation of concerns

• easy testing

Additional benefits when using standard off-the-shelf JMS providers:

• asynchronous JMS behavior will prevent deadlocks

• JMS messages can participate in database transactions so we get reliable guaranteed behavior