Rollback

The community often criticizes Microsoft for adding new platform features only when Microsoft needed them. Well, it has been a bit too harsh – Microsoft did add improvements in other situations, too. But still, if you compare it to other Microsoft’s languages like TypeScript or C#, the AL language isn’t really advancing.

I’ve never truly understood why we could explicitly commit a transaction, but we could only implicitly roll one back. There is a universe of difference between throwing an error (and ending the call stack), and rolling back (and continuing execution). There was always a way to roll back and go on, sure.

In my two last posts, I laid out the technical design of the Preview Posting feature, and then showed how to simplify its design to get around the unwanted behavior of TryFunction . One thing is obvious from these posts: Preview Posting wants to simulate posting of a document (or journal) to show what the results would be, but without leaving any actual trace in the database.

One of great new functional features of Microsoft Dynamics NAV 2016 is preview posting. It allows you to preview all the entries that would result from posting a document or a general journal. Preview posting is not a simple thing. If it was, Microsoft would have delivered it years ago.