RE: [CFCDev] Is Decorator What I Need or Just Extends?

[Dawson, Michael]

Simon, I'm curious as to how you would structure a simple application where a form provides input that is eventually stored in a database.   These are a couple of the plans I have for such a solution:   Solution #1 Form page is loaded If this is a new form entry, an instance of a data bean is created and initialized with default/empty properties. If this is a modification of an existing record, an instance of a data bean is created by a DAO object. The data bean's getters are used to populate the form fields. The form is submitted to itself. The form data is loaded into a new instance of the data bean. The bean is passed into a form data validator object. The validator's validate() method is called. Any errors are recorded in an error handler object. If errors are found, the data bean's getters are used to populate the form fields, again. If no errors are found, the data bean is passed to the DAO for insert/update   Solution #2 Basically, the same as solution #1, but without the separation of the data bean and the validator. The validation is wrapped up in the data bean.   I know that doesn't follow the best-practices, but, at this time, I don't see much need in having two almost-identical objects.  One with validation logic and one without.  Maybe I'm missing the point, but I need to start somewhere.   Thanks MAD From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Simon Horwith Sent: Tuesday, March 08, 2005 3:31 PM To: CFCDev@cfczone.org Subject: Re: [CFCDev] Is Decorator What I Need or Just Extends? I don't like this idea of "form validators".  Validation by an object should be performed on other objects.  After all, data collected by a form, if it's used for anything, should be stored in an object somewhere.  The data being collected via a form(s) is still being validated either way, but validating forms and validating objects are very different ideas in the context of the thought process behind how to approach the requirements at hand. ~Simon Simon Horwith CIO, AboutWeb - http://www.aboutweb.com Editor-in-Chief, ColdFusion Developers Journal Member of Team Macromedia Macromedia Certified Master Instructor Blog - http://www.horwith.com ---------------------------------------------------------- You are subscribed to cfcdev. To unsubscribe, send an email to cfcdev@cfczone.org with the words 'unsubscribe cfcdev' as the subject of the email. CFCDev is run by CFCZone (www.cfczone.org) and supported by CFXHosting (www.cfxhosting.com). An archive of the CFCDev list is available at www.mail-archive.com/cfcdev@cfczone.org