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From "Craig R. McClanahan" <>
Subject RE: Proposal for Validation Framework
Date Tue, 27 Nov 2001 12:56:06 GMT

On Tue, 27 Nov 2001, Rey Francois wrote:

> Date: Tue, 27 Nov 2001 11:30:23 +0100
> From: Rey Francois <>
> Reply-To: Jakarta Commons Developers List <>
> To: 'Jakarta Commons Developers List' <>
> Subject: RE: Proposal for Validation Framework
> Having a validation framework in the Jakarta commons is a great idea, the
> Java community would definitely benefit from this. There is one JSR which
> should go into this direction, but that JSR seems kind of quiet from the
> outsider's prospective I have: see the JavaServer Faces JSR on
> The Mapper framework I've created
> could also be a good candidate (see
> I'm sure there are many more
> contenders out there -I just saw a reply in this thread about Barracuda- so
> I expect this topic to last, or die!

As a member of the JSR-127 expert group, I can assure you that the EG
considers validation for user input (typically from an HTML form) is
definitely within the scope of JavaServer Faces.  That being said, this
does not reduce the usefulness of a general purpose Validation framework
that can be used across different UI frameworks.

> Fr.

Craig McClanahan

> -----Original Message-----
> From: David Winterfeldt []
> Sent: 26 November 2001 18:43
> To:
> Subject: Proposal for Validation Framework
> This validation framework was made to work with Struts
> originally, but it will work on any JavaBean.  So in
> some discussions we thought that it might be nice if
> it was in commons so more people would know about it
> and can use it.  Also there could be more examples of
> making it work with other frameworks than Struts.
> Here is a brief description of the project and the
> link to the site where it is posted (which has
> documenation posted on it).
> The Validation Framework was made to work with Struts
> although it can be used to perform validation on any
> JavaBean (by using the Validator class). It can
> perform basic validations to check if a field is
> required, matches a regular expression, email, credit
> card, and server side type checking and date
> validation. Different validation rules can be defined
> for different locales. The framework has basic support
> for user defined constants which can be used in some
> field attributes. The validation routines are
> modifiable in the validation.xml file so custom
> validation routines can be created and added to the
> framework.  JavaScript can be auto-generated that
> matches the server side validation.  The current tag
> (JavascriptValidatorTag) relies on Struts, but could
> be abstracted to generate Javascript for other
> frameworks.
> Validating Outside of Struts
> uts
> Let me know if there are any questions.
> David Winterfeldt
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