Ok I'm back again on this one.
Lets try this again.
My objective:
Using Struts, I will need to create form bean for each Struts form.
So, for example, I will create RegisterForm and LogonForm classes.
As you can se now, these two classes will have similarities in their
getter/setter methods.
Hence I would like to Create a single User class that all these similar form
beans can inherit.
public class RegisterForm extends User {
// inherits necessary setters/getters from User class
public ... validate(...) { // override superclasses version
}
}
public class LogonForm extends User {
// inherits necessary setters/getters from User class
public ... validate(...) { // override superclasses version
}
}
Now I want my form beans also to inherit ValidatorForm class.
So, I add extends on User class as follows: (don't really think this one is
cool, but anyway, it works :) )
public class User extends ValidatorForm {
// setter/getter properties
}
As far as Struts side of things, this seems to be working fine so far.
Only reason I make use of form classes here that inherit my User class is
because of validation requirements specific to each individual form. (needed
in my Struts config) Now there is no way I'm rewriting my User specific
setter/getter properties for each of my forms, e.g. RegisterForm, LogonForm.
Both of these form beans will contain common setter/getter properties which
need to map to the same table called User.
Again, if I need to specify for each form bean (RegisterForm, LogonForm) a
separate class descriptor with it's own, SAME, fields, it would just suck a
bit.
Hope this time I come roght. :)
I really appreciate your help.
--Alen
----- Original Message -----
From: "Thomas Mahler" <[EMAIL PROTECTED]>
To: "OJB Users List" <[EMAIL PROTECTED]>
Sent: Tuesday, June 03, 2003 11:43 AM
Subject: Re: Extent. How to?
> Hi again Alen.
>
> I think you should define the extent the other way round.
> That is: RegisterForm is the abstract base class and User is the
> concrete class defining all the persistent attributes.
>
> <class-descriptor class="za.co.alen.struts.RegisterForm">
> <extent-class class-ref="za.co.alen.jfaq.User" />
> </class-descriptor>
>
> <class-descriptor
> class="za.co.alen.jfaq.User"
> table="User"
> >
> <!-- field mappings -->
> ...
> </class-descriptor>
>
> cheers,
> Thomas
>
> Alen Ribic wrote:
> > Thanks Raymond for your reply.
> >
> > This is the thing. I am very lost.
> > The User class descriptor in repository contains all my filed mappings
to my
> > User table in db.
> > Now za.co.alen.struts.RegisterForm class mapping is a very good
question.
> > What would the za.co.alen.struts.RegisterForm class mapping contain? I
don't
> > need any RegisterForm class specific fields at all.
> > I just need to indicate to OJB that it needs to something like cast
> > RegisterForm instance to User and hence would need to map that to User
class
> > / table mapping. (Remember that the instance I get is of
> > za.co.alen.struts.RegisterForm)
> > RegisterForm class does not have any real meaning for persistence
besides
> > the inherited fields from User bean.
> > It basically just contains overridden validate(...) method used for
> > server-side validation in my struts components.
> >
> > I hope this is making sense. :-)
> >
> > --Alen
> >
> >
> >
> > ----- Original Message -----
> > From: "Raymond Barlow" <[EMAIL PROTECTED]>
> > To: "OJB Users List" <[EMAIL PROTECTED]>
> > Sent: Tuesday, June 03, 2003 10:45 AM
> > Subject: Re: Extent. How to?
> >
> >
> >
> >>Hi Alen
> >>
> >>I hate to ask the obvious, but you never know :)
> >>Have you created a mapping for za.co.alen.struts.RegisterForm in your
> >>repository_user.xml file??
> >>
> >>Regards,
> >>Raymond Barlow
> >>
> >>Alen Ribic wrote:
> >>
> >>
> >>>Hi again
> >>>
> >>>I have sent an email already and got a good reply, but now I have an
> >
> > issue
> >
> >>>with mapping side.
> >>>
> >>>I have got classes as follows:
> >>>
> >>>// JavaBean
> >>>public class User extends ValidatorForm {}
> >>>
> >>>// Struts form bean
> >>>public class RegisterForm extends User {}
> >>>
> >>>Now I just need OJB to recognize RegisteForm class as a User.
> >>>
> >>>usr = request.getAttribute("registerForm"); // returns RegisteForm
> >
> > instance
> >
> >>>broker.store(usr);
> >>>
> >>>So now, OJB on store(...) should look at mapping for User class to User
> >>>table.
> >>>
> >>> <class-descriptor
> >>> class="za.co.alen.jfaq.User"
> >>> table="User"
> >>> >
> >>> <extent-class class-ref="za.co.alen.struts.RegisterForm" />
> >>> <!-- field mappings -->
> >>> ...
> >>> </class-descriptor>
> >>>
> >>>I presume that now I need a <class-descriptor/> for the RegisterForm
> >
> > class.
> >
> >>>Is this correct?
> >>>I looked at the Article example but I just can't get my one to work.
> >>>
> >>>My app still says that OJB cannot recognize RegisterForm class in
> >>>repository.
> >>>
> >>>What am I doing wrong and how can I go about doing this correctly.
> >>>
> >>>Thanks
> >>>
> >>>--Alen
> >>>
> >>>
> >>>
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> >>
> >>
> >>
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