Re: DynaValidatorActionForm Setting Properties

Mon, 29 Sep 2003 06:11:41 -0700

Hi Adam,

Cheers for your efforts turns out it a silly mistake i've made i.e. i entered an invalid class name for my form defintion i.e.

<form-bean name="MyForm"
type="org.apache.struts.action.DynaValidatorActionForm">

Should be:

<form-bean name="MyForm"
type="org.apache.struts.validator.DynaValidatorActionForm">


Casting the inbound action form now works fine.

Cheers

Pat


From: Adam Hardy <[EMAIL PROTECTED]>
Reply-To: "Struts Users Mailing List" <[EMAIL PROTECTED]>
To: Struts Users Mailing List <[EMAIL PROTECTED]>
Subject: Re: DynaValidatorActionForm Setting Properties
Date: Mon, 29 Sep 2003 14:19:20 +0200

Hi Pat,

if you have to instantiate it yourself, you should call the initialize() method on the form first so that struts configures it to the struts-config settings.

However that probably won't help in this case since your in-bound form doesn't work either. I doubt it would help, but you could try naming your class with an initial capitalized letter. Secondly, does the exception from the inbound form have a message?

Regards
Adam

On 09/29/2003 01:35 PM Pat Quinn wrote:
I have an Action to prepare a JSP view which uses a DynaValidatorActionForm. When i try to set a Form property i get a NullPointerException my source is as follows:


-----------------
Struts-Config.xml
-----------------
<form-bean name="MyForm" type="org.apache.struts.action.DynaValidatorActionForm">
<form-property name="myTestTO" type="com.mycompany.to.myTestTO"/>
</form-bean>


<action path="/viewTest"
    type="com.mycompany.actions.myTestAction"
       scope="request"
    input="my-tile-view"
       name="MyForm"
       validate="false">
       <forward name="success" path="success-tile"/>
</action>




--------------
VALIDATION.xml
--------------
<form-validation>
  <formset>
     <form name="MyForm">
        <field property="myTestTO.name"
               depends="required,minlength">
                    <var>
                      <var-name>minlength</var-name>
                      <var-value>10</var-value>
                    </var>
        </field>
     </form>
  </formset>

</form-validation>




--------------------------------------------------------------
ACTION SOURCE CODE (i.e. com.mycompany.actions.myTestAction)
--------------------------------------------------------------

DynaValidatorActionForm myForm = new DynaValidatorActionForm();

myForm.set("myTestTO", new myTestTO()); /* THROWS NullPointerException Here!!!!*/

pRequest.setAttribute("MyForm", myForm );


I've also tried casting the inbound ActionForm to DynaValidatorActionForm but i still get the same error when i invoke the set method.



Any Ideas?

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struts 1.1 + tomcat 4.1.27 + java 1.4.2
Linux 2.4.20 RH9


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