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From "Chris Newland" <chris.newl...@emorphia.com>
Subject RE: Configuration attribute overriding fails for nullable?
Date Mon, 03 Sep 2001 08:55:31 GMT
Hi Martin,

I can see your point about not overriding nullable, its not really a
constraint specialisation in the same way that narrowing a numerical range
would be.

The case I was thinking of was this:

I would like to use the same descriptor file to validate data from different
forms that concern a user's account details.

The default case would be when creating an account, the password field must
not be null.

The overriding case is when a user modifies some of their account details
(whilst logged in). They may or may not wish to change their password. In
this case I would like to allow the modified details to be validated even
when the user did not specify a new password.

I guess I could send the password as a hidden form variable but that doesn't
give me good feelings about security since I would be transmitting it to
their browser where the page could be accessed from a cache.

Its no problem for me to keep the current behaviour as I've got a workaround
which is to use a different password variable for the account modification
form which can be nullable.

Best Regards,

Chris

> -----Original Message-----
> From: Martin Man [mailto:Martin.Man@seznam.cz]
> Sent: 01 September 2001 16:52
> To: Chris Newland
> Cc: Cocoon Dev
> Subject: Re: Configuration attribute overriding fails for nullable?
>
>
> On Fri, Aug 31, 2001 at 01:16:35PM +0100, Chris Newland wrote:
> > Hi All,
> >
> > Parameter overriding does not appear to be working when I try
> to override
> > the 'nullable' attribute of a Configuration parameter:
> >
> > <root>
> >
> > 	<parameter name="password" type="string" nullable="no" />
> >
> > 	<constraint-set name="modify">
> >
> > 		<validate name="password" nullable="yes"/>
> >
> > 	</constraint-set>
> >
> > </root>
> >
> > I've tested overriding the other attributes (min, max, max-len
> ...) and they
> > work fine but the example above fails when the "modify"
> constraint-set if
> > used to validate a null "password" parameter.
>
> yes, that's exactly the behavior..., when I started coding all
> this validation
> stuff, I was unable to find a case where overriding of nullable
> parameter will
> be meaningful, so for the moment it does not work as you'd expect...
>
> but, if you provide us with the example where it would be usefull I can
> correct it, should be doable somewhere inside
> AbstractValidatorAction.java...
>
> >
> > I've verified this behaviour by adding extra debug into
> > AbstractValidatorAction.
> >
> > >From what I can see, the construction of Configuration
> variables is not part
> > of the Cocoon2 codebase but is in the Avalon framework package. I'll
> > download the source for Avalon and see if I can find the bug but can
> > somebody please SHOUT if I'm going on a wild goose chase?
> >
>
>
> rgds,
> martin
>
>
> > Thanks,
> >
> > Chris
> >
> > --
> > Chris Newland
> > Software Research Engineer
> >
> > Emorphia Ltd
> > Registered in England.  4133002
> > Mill House, Station Approach, Harlow Mill, Harlow, Essex, CM20 2EL, UK
> >
> > Email: chris.newland@emorphia.com
> > Tel: +44 (0)1279 450100
> > Fax: +44 (0)1279 450102
> >
> > Check out FIPA-OS at http://fipa-os.sourceforge.net/
> >
> > This message may contain information proprietary to Emorphia so any
> > unauthorised disclosure, copying or distribution of its
> contents is strictly
> > prohibited.
> >
> >
> >
> > ---------------------------------------------------------------------
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> >
>
> --
> ------------------------------------------------------------------
> -------------
> "Only dead fish swims with a stream"
> Malcolm Muggeridge
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