So Ivelin, if I understand you correctly, are you suggesting that we would have two points of validation?
1) when the user submits a form via 'action'. 2) when the information stored in the db (or wherever) is displayed to the user using transformation validation. Well for (2), I'm not clear on why validation is needed. The user hasn't even had a chance to do anything with the information presented to him/her. If the information was maintained in the database, it would need to be valid (I hope). If some business logic changed later on, then at the time that the user submits the form, the validation would take place, wouldn't it? Why would we need another validation before the submission? I'm having a lot of difficulty understanding where to place validation when dealing with XML databases like Xindice. I would think that it should only be in one place. So in your example, whether or not an email address EXISTS in the xml database OR whether the email address entered is VALID -- should happen in one place. AFAIU, currently no such unique constraint validation is offered by these databases. If anyone knows otherwise, please let me know. So in this case, I would have to get all email addresses in the xml documents into a hash or use some DOM API during the 'action', then make sure that the new one that is being inserted doesn't already exist. Then perform the insert using the XMLDBTransformer. Well wouldn't it be really cool (and faster!) if I could do both the unique key validation and the insert in one place? Sorry if this email leans more towards xml databases. I need some help clearing these concepts and especially why something like this doesn't already exist so please go easy on me. Ivelin, I have tried your new xmlform example and it rocks! Waiting to see Torsten's examples now. Regards, Sam __________________________________________________ Do You Yahoo!? Yahoo! Sports - live college hoops coverage http://sports.yahoo.com/ --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, email: [EMAIL PROTECTED]
