This session will cover a strategy used in a real world deployment to keep multiple clients displaying multiple calendars and schedules in sync, in real time. 4D forms subscribe to a worker process to monitor when tables are modified. Each table’s trigger reports to the worker any time it fires. The worker in turn passes the trigger’s report on to all the subscribers monitoring the table. The code was originally written in 4D v16R4 using dot notation. The approach works in client/server or standalone, and can be used to monitor multiple tables for any purpose. All is accomplished with a single worker method which will be made available following the presentation.
Presented by: John Baughman • BY’te DESIGN Hawaii