Multiple applications updating single database in java dating starwood complaints
After each successful query in either update() or create(), calls are inserted to notify Change(), which calls each registered Account Change Listener. With these changes made, I’m ready to start working on an implementation of live updates, which I will begin in the next article. I’ve chosen to set up the balance field in the ‘accounts’ table of my example application for live updates, so the changes I need to make are as follows: Listing 1: SQL changes I’ve chosen to use My SQL’s “datetime” type despite the fact that its resolution is only whole seconds because it allows for easier debugging (as times are presented in an understandable format).For a final application, I would consider the alternative of storing millisecond values in a “longint” field.
Interested objects can inform the Account DAO object that they want to be informed about changes, and it will then call them back with details of each Account object it stores in the database.