I'm wondering if anybody has already extended the validator framework - to use it in the business layer instead of the controller layer - supporting dynamically loaded/created forms
Validating user input is no special struts or web application requirement. In my case, all applications are web applications, but I've got different "applications" based on the same business data (the layout differs). Also, I've got a lot of questionnaires which are going to be implemented as forms. Thus I want to define the validation together with the questionnaire aka form.
The validator framework is part of the controller. IMHO in case of questionnaires this is the "wrong" tier - a questionnaire is a business object, and validating the user input must be defined there. Of course, the same validation rules also apply for the validation of the form input. In other words, the questionnaire is the model for the form - the form is the view.
So, what I'm looking for is a way to use the validator framework for defining my (business) questionnaires. The questionnaire then "works" as a model providing the validation rules to the view /or controller.
I've read (in Chuck Cavaness' book on struts) how to use the validator framework outside struts - but this is not really the point: I want to use it outside and inside at the same time - and (to make it a little bit more interesting) I need also some extensions, e.g. defining question blocks, "super-properties", filters.
I've found some questions here before on that or similar topics, so maybe the problem was solved before? Otherwise I'll try to solve this problem - in this case some hints may help a lot :)
Jens
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