Sunday, August 12, 2007

Restarting your application.

We are creating a project to automatically update our different modules. That usually implies an application restart, lots of ideas went around, a service that does that, a batch file, or another program working as a proxy of the original one, but, hey, I found this G R E A T article from Zarko Gajic who is always giving amazing tips with Delphi on how to do it in a VERY easy way.


Saturday, August 04, 2007

The overload directive.

Well, it is fairly common to use the Delphi's overload directive to create a method with different sets of parameters in an object.

What I wasn't aware is that it actually works on functions or procedures that are not part of an object. That is cool.

Thursday, August 02, 2007

RemObjects and DataSnap.

I'm using a mix of Delphi's RemObjects SDK and DataSnap on our middletier, and we have implemented session management on all the services and in all the DataSnap remote modules.

Thanks to RO, that can be easily done on the DataSnap modules by turning on the RequiresSession property of the RODataSnapModule. Now the only problem with this is during design time, once it is on you will not be allowed to connect to your DataSnap datasetproviders without first logging in. So, as you can read that is a problem.

The solution? We added a command line parameter to our application server that simply controls if we want to require a session or not in our services or datamodules. Once that flag is set, we just use it as an indication while we are creating the service/datamodule.

Soon, I will post the results of a LETHAL combination, KbmMW, RO and DataSnap in a single SUPER POWERFUL MIDDLETIER MILKSHAKE.