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From Adam Hardy <>
Subject Re: validator integer required
Date Fri, 02 Apr 2004 07:35:02 GMT
Actually most of the Validator and the DynaActionForm functionality is 
based on the assumption that you are using String for the type.

Using an int in your action form leaves the possibility open that 
someone will submit a non-int character, and then you will get an 
Exception message in tomcat that Validator can do nothing about.


On 04/02/2004 01:01 AM Paul Barry wrote:
> validate is true.  I wrote my own "greaterThan" validation to make sure 
> the property is greater than 0, which seems to work.  I haven't looked 
> at how the validator works at all, but it seems that it checks the form 
> bean, not the request parameters, to validate the values.  Is that the 
> case?  If that is true, if I had a String property where I gave it some 
> default value in my bean, like String property = "default", when someone 
> submits a form the validation would always pass because the property of 
> the ActionForm is not null, regardless of whether or not the was a 
> "property" request parameter.  This is example is stupid, because you 
> would never have a default value on a require property, but the point is 
> this may explain the behavior I am seeing with the int property.  The 
> int in the form is not blank or null, because it is 0 (primitives can't 
> be null), so therefore it passes the required validation.
> The value we are talking about should match up to an oracle sequence 
> generated int, so it always should be an int, which is why I made the 
> ActionForm property an int.  I guess I could make it a String property 
> in the ActionForm and just use the "integer" validation to make sure it 
> is an int, even though the ActionForm property is a String?  Would that 
> work?
> Joe Hertz wrote:
>> Well, it's not the *expected* behavior.
>> First thing -- I'd make id a String. The validator parses String 
>> properties. Not having looked into the validator code myself, I 
>> suppose "required" *could* work for a non string property, but I sure 
>> wouldn't try it with a primative like int. Integer might have better 
>> results, but I'm speculating.
>> Just make id a String in the form and be done with it.
>> Aside from that, std questions about validator setup:
>> Is validate="true" on your ActionMapping?
>> Are we talking about a ValidatorForm or a ValidatorActionForm? With 
>> the letter, you validate the Mapping name. with the former you 
>> validate the form name?
>> HTH,
>> Joe
>>> -----Original Message-----
>>> From: Paul Barry [] Sent: Thursday, April 
>>> 01, 2004 5:38 PM
>>> To:
>>> Subject: validator integer required
>>> I have an ActionForm with an int property called id.  If I use the 
>>> validator \"required\" validation, it always passes the validation, 
>>> even if there is no request parameter called id.  Is this is correct 
>>> behavior, or am I doing something wrong?
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struts 1.2 + tomcat 5.0.19 + java 1.4.2
Linux 2.4.20 Debian

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