Bruno Thanks for helping clarify this - maybe all this is "obvious" to well-seasoned developers, but perhaps not to everyone.
To continue; assuming that inserting database records, modifying object models etc does not take place anywhere in the pipeline; where *does* it take place in your application as a whole - in custom written actions? in the flowscript?? Derek >>> [EMAIL PROTECTED] 2004/05/05 10:03:37 AM >>> On Wed, 2004-05-05 at 08:56, Derek Hohls wrote: > Bruno > > Yes, I suggest you read the paper first before we continue > the discussion on templates ;-) > > In the meantime, perhaps you can expand on why there should > not be logic in generators such as XSP and JXT and, if not there, > where it should, in fact, be (short of writing custom Java code > each time) ? > > I agree that flow control should not be in XSP; but no data > manipulation? Even writing conditional SQL to bring out "part" > of the data, based on input parameters, is kind of manipulation, > and soon as you do something like add two values from a row > result on the basis of the third value, you have added logic. > Where does all this go instead?? I thought you meant manipulation of external data. Of course, manipulation of the data that goes through the pipeline is no problem, after all, that's what each transformer does. When seeing data manipulation, I first thought you meant things like inserting database records, modifying object models, etc. In other words, everything that has external side-effects. Not that this is disallowed per-se, but I see a pipeline (generator-transformers-serializer) as the the view part of an application. People have also been successfully using the pipeline itself for implementing all their business logic, and when that's your vision of how stuff should be done, no problem. > And why are all the docs then > mis-leading us about doing these type of things? > > Thanks in advance for any advice or "better practice" suggestions... > > Derek -- Bruno Dumon http://outerthought.org/ Outerthought - Open Source, Java & XML Competence Support Center [EMAIL PROTECTED] [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. MailScanner thanks transtec Computers for their support. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
