Quick question: what the differences between signal start event and message start event

[dean]

If I have a external JMS , and want to trigger all definitions via accepting some message.

Thx.  

[jearles]

In general, the main difference is that a signal event is simply broadcast out to all listeners, and the listeners trigger if they 'hear' the signal that they're looking for. On the contrary, message events are always directed at a single receiver.

It is possible to trigger both externally, also - so it really depends on the necessary use case that you're trying to meet. For more information about both, check out the User Guide sections for each:

• Signal Start Event
• Message Start Event
  

Hope this helps

bp3‌