Until I decided to go with xdoclet which generates the DTOs and the EJBs for me, I was wondering about using some sort of solution like you, where I used a DynaForm mothership that 'released' its Map to the back-end via the getMap() method (for want of a better metaphor).
There were several drawbacks I could see.
1: there is no setMap() method to go in the other direction
2: the back-end would be strongly coupled to the web-interface by a dependence on it either for validation or, if the back-end did validation, because validation / type-casting errors would only be raised at the back-end
3: there is no clever way to set up a programmatic 'contract' between the front-end and back-end as to how the variable-keys in the map would be named (front-end keys are based in struts-config.xml)
Adam
On 04/04/2004 10:24 AM Joe Hertz wrote:
Jolly, you answered it yourself:
"I dont want to write another actionForm class that represent my DTO...I am in great trouble."
This isn't Struts causing you the problem. It's the JSP spec.
The automatic type conversion it does for you, will cause "null integers" to be sent into your DTO as 0.
So yes, if you cannot be bothered to create another bean form class, then there is no solution. Not one that uses JSP's anyway.
I do feel your pain though. It seems on many levels, just plain silly to have to declare objects almost but not completely like the ones you already have (complete with the risk of accidental typos) just to satisfy the web tier.
My suggestion: Find a tool that helps you define your form bean getter and setters, or do what I do: Use DynaBeans. I'm doing some reasonably complex validation and nesting with DynaBeans in forms. In fact, I have a "GenericListForm" DynaBean which just contains a List property. I can use this form on any JSP that shows a list of objects. For me, those list objects are dynabeans themselves.
My goal is to never have to write a getter or setter in a form bean ever again.
Hope this helps
-Joe
-----Original Message-----
From: jolly [mailto:[EMAIL PROTECTED] Sent: Saturday, April 03, 2004 11:12 PM
To: Struts Users Mailing List
Subject: Re: integer validation problem
Dear Richard
Thanks for your reply. But I dont want to declare this type of variable as String. I want to use the DTO as form bean property. For this it is not validated by validator. so I have to make my DTO dirtty that is I have to declare another attribute for all variables that are not String. And I pass that String attribute to the jsp and then I set the validated value to my integer or double variable. This type of solution cant satisfy me. I dont want to write
another bean form class. So I have to comprise myself with that solution.
thanks again for your help
-jolly
On Sat, 03 Apr 2004 12:16:35 -0800, Richard Yee wrote
Jolly,
If you had checked the archives, you would have found your answer
immediately since this topic has come up several times in the past two weeks. Anyway, declare your firstCategoryAmount and
incrementDTO
attributes as Strings instead of int and double.
-Richard
At 10:57 PM 4/2/2004, you wrote:
Hi please help me. My form-bean declaration is like this
<form-bean
name="payScaleForm"
type="com.mislbd.iris.util.CustomDynaActioForm">
<form-property name="payScaleDTO" type="com.mislbd.iris.hr.core.compensation.PayScaleDTO" />
and PayScaleDTO has incrementDTO as its attribute.
I define my jsp as:
<layout:text key="payScale.basicPay"
property="payScaleDTO.basicPay"
styleClass="LABEL" isRequired="true"/>
<layout:text key="payScale.Increment.firstCategoryAmount"
property="payScaleDTO.increment.firstCategoryAmount"
styleClass="LABEL"
isRequired="true"/>
basicPay and firstCategoryAmount are defined as integer or double. But this fields are not validated if i enter text and
saved zero to
database. I cant use copyproperties of beanutils because
of the ha a
relationship. I dont want to write another actionForm class that represent my DTO. How can I solve my problem. please help
me. I am in
---------------------------------------------------------------------great trouble. JOlly -- jolly
---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
-- jolly
--------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
--------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
-- struts 1.2 + tomcat 5.0.19 + java 1.4.2 Linux 2.4.20 Debian
--------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
