Re: [Springframework-developer] webflow: validators

[Erwin V. <erw...@er...>]

This doesn't seem to be specific to SWF: as you say, in theory it's just a 
special, configurable Validator implementation (we actually made a 
commons-attributes driven validator on my current project). What is the 
status of "declarative input validation with Spring" in general? Is there 
anything in the sandbox? Integration with commons-validator or XWork 
validators?

Erwin Vervaet
erw...@er...
----- Original Message ----- 
From: "Steven Devijver" <ste...@gm...>
To: <spr...@li...>
Sent: Saturday, April 09, 2005 3:44 PM
Subject: Re: [Springframework-developer] webflow: validators


>> At the moment SWF does not have any direct binding & validation support 
>> of
>> its own: it just uses the Spring binding and validation infrastructure
>> (DataBinder, Errors, Validator). I don't think binding and validation is
>> really a feature that we should build *into* SWF. Instead we need to
>> integrate with existing solutions.
>
> I hear you. It's just that I really would like to see declarative
> validation rules. Besides, a validator that would support this would
> simply be a specialization of the Validator interface.
>
>>
>> Could you elaborate on the "XWork validators" a bit?
>>
> This example says it all:
>
> <validators>
>    <field name="bar">
>        <field-validator type="required">
>            <message>You must enter a value for bar.</message>
>        </field-validator>
>        <field-validator type="int">
>            <param name="min">6</param>
>            <param name="max">10</param>
>            <message>bar must be between ${min} and ${max}, current
> value is ${bar}.</message>
>        </field-validator>
>    </field>
>    <field name="date">
>        <field-validator type="date">
>            <param name="min">12/22/2002</param>
>            <param name="max">12/25/2002</param>
>            <message>The date must be between 12-22-2002 and
> 12-25-2002.</message>
>        </field-validator>
>    </field>
>    <field name="foo">
>        <field-validator type="int">
>            <param name="min">0</param>
>            <param name="max">100</param>
>            <message key="foo.range">Could not find foo.range!</message>
>        </field-validator>
>    </field>
>    <validator type="expression">
>        <param name="expression">foo &gt; bar</param>
>        <message>Foo must be greater than Bar. Foo = ${foo}, Bar =
> ${bar}.</message>
>    </validator>
> </validators>
>
>
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