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Date: Mon, 28 Nov 2011 21:00:36 -0500
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Subject: Re: Customizing validation
From: Dave Newton <davelnewton@gmail.com>
To: Struts Users Mailing List <user@struts.apache.org>
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If the need is across the application, then modifying the app-wide
interceptor makes sense.

App-wide rule-based validations require something higher-level than
reworking existing validators, or writing new ones, to express something
that is likely declarative in nature. Seems more like "run this bunch of
validations based on this condition"--rather than simply look up
validations based on the action name, lookup should be based on the
condition(s).

That's mechanism-level, not validate-level.

d.
On Nov 28, 2011 8:33 PM, "Li Ying" <liying.cn.2010@gmail.com> wrote:

> Changing the [validation interceptor] will switch on/off the all
> validations by one pre-condition.
>
> But what he need is:
> if and only if pre-condition-A is true, run validation-A;
> if and only if pre-condition-B is true, run validation-B;
> etc...
>
> So, I think the right way is, change the validators.
>
>
>
> 2011/11/29 Dave Newton <davelnewton@gmail.com>:
> > If the goal is to execute validations based on arbitrary preconditions (I
> > missed the original req) the *easiest* thing to do might be to just
> > extend/usurp the existing validation interceptor to do that precondition
> > check.
> >
> > d.
> >
>
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