[4diac-dev] Confusion regarding communication architecture

[Davor Cihlar <davor@xxxxxxxxxx>]

Hi!

I'm implementing PostgreSQL support for Forte and I'm confused about 
some parts of the architecture. If someone have some time to help me 
understand it I would very much appreciate it.

On the web interruptCommFB is perfectly explained. But startEventChain 
(or is it startNewEventChain now?) isn't, so I'm not sure what its 
purpose is.

Also from the existing sources (xquery, OPC, and some others) it looks 
like there is always some kind of queue (and always implemented from 
scratch which is not ideal) for commands sent to a handler. I.e. "go and 
fetch me some data". But there is no queue of any kind for data that is 
going towards outputs of FBs.
This doesn't look good if some process makes multiple data requests and 
Handler tries to send all responses to FB ouputs immediately. Or am I 
missing something big?


P.S.: I wanted to post this on the forum, but unfortunately I managed to 
lock my account and I don't know when the lock will time out.