So right after I sent my last message, I realized that while DataContext.WILL_COMMIT was gone, EventManager was still around.
I did a quick search to see what kind of events were published, and I saw this one: DataChannel.GRAPH_FLUSHED_SUBJECT Is this equivalent to the DataContext.WILL_COMMIT event? On Fri, Sep 13, 2013 at 2:32 PM, Mike Kienenberger <[email protected]> wrote: > So I'm finally making the attempt to upgrade my ancient Cayenne > project from 1.1 to 3.x. > > The one kind of compile error I still haven't resolved is registering > for a data context commit. > > I know I can register individual PrePersist, PreRemove, and PreUpdate > callbacks for individual entity types, but I don't see how I be > notified of with a single DataContext.WILL_COMMIT event once before > each context.commit(). > > > I see three problems with trying to use the individual callbacks: > > - Huge performance hit of being notified for each and every entity committed > > - Another performance hit of setting up lifecycle notification by > iterating through the runtime metadata to register every existing > entity type for each of the three pre-commit listeners > > and > > - If nothing gets changed by the commit, then I would still get no > notification.
