, May 11, 2002 2:09 PM
To: Struts Users Mailing List
Subject: Re: Forms Beans and DAO (Best Practices)
may want to hold stuff that is not Strings, in the
form and not the dvo, because it may be in an invalid
format...
sandeep
--- stuart robertson [EMAIL PROTECTED] wrote:
Another
may want to hold stuff that is not Strings, in the
form and not the dvo, because it may be in an invalid
format...
sandeep
--- stuart robertson [EMAIL PROTECTED] wrote:
Another approach to this is to have the form beans
simply hold references to the value objects (from
the
DAO) directly.
Another approach to this is to have the form beans
simply hold references to the value objects (from the
DAO) directly. You can use the nested taglibraries
that are now a part of struts 1.1 to access these when
building html forms. The slick thing is that when the
servlet populates the form
Subject: Re: Forms Beans and DAO (Best Practices)
From: Vic Cekvenich [EMAIL PROTECTED]
===
(great thread)
If #1 is prefered, can somone please coment as to the practical value of
the valueObject layer if one is not doing EJB.
Why not:
myFormBean.setDAO(myDAO.retSelf());
This allows me
Subject: Re: Forms Beans and DAO (Best Practices)
From: Vic Cekvenich [EMAIL PROTECTED]
===
My example is on the home page and on downloads and it has full working
code I teach Struts from(ok not the latest version, I have to $ave
something for the class), and so is all the source code.
Ans
I see what you're doing and agree it seems easier.
But coupling the form beans to the DAO's so tightly I wouldn't call a best
practice. Here is another approach:
- Have the DAO's return Value Objects. But then have a setValueObject() on
the form bean so you can store the entire value object
Mailing List
Subject: Re: Forms Beans and DAO (Best Practices)
I see what you're doing and agree it seems easier.
But coupling the form beans to the DAO's so tightly I wouldn't call a best
practice. Here is another approach:
- Have the DAO's return Value Objects. But then have a setValueObject
to actual EJBs and nothing in the web tier has to change and both DAOs and DTOs can
be reused.
-Original Message-
From: Chen, Dean (Zhun) [mailto:[EMAIL PROTECTED]]
Sent: Friday, May 03, 2002 2:23 PM
To: 'Struts Users Mailing List'
Subject: RE: Forms Beans and DAO (Best Practices
, 2002 4:25 PM
Subject: RE: Forms Beans and DAO (Best Practices)
In general, I use the Struts action classes as proxies to my business
objects and my business objects serve as proxies to my data access objects
and I pass data across tiers using DTO (DataTransportObject [use to be
ValueObject
: RE: Forms Beans and DAO (Best Practices)
In general, I use the Struts action classes as proxies to my business
objects and my business objects serve as proxies to my data access objects
and I pass data across tiers using DTO (DataTransportObject [use to be
ValueObject]). In this fashion, I can
!!
-Ranjan.
-Original Message-
From: Graham Lounder [mailto:[EMAIL PROTECTED]]
Sent: Friday, May 03, 2002 2:35 PM
To: Struts Users Mailing List
Subject: Re: Forms Beans and DAO (Best Practices)
This is a really good description. I do have one small question, where does
the connection pooling
-
From: Pruthee, Ranjan [mailto:[EMAIL PROTECTED]]
Sent: Friday, May 03, 2002 3:25 PM
To: Struts Users Mailing List
Subject: RE: Forms Beans and DAO (Best Practices)
In general, I use the Struts action classes as proxies to my business objects and my
business objects serve as proxies to my
it will be a heavyweight
component will lot of dependencies. Reuse will take hit with this approach but that
just me.
Ranjan.
-Original Message-
From: Jayaraman Dorai [mailto:[EMAIL PROTECTED]]
Sent: Friday, May 03, 2002 3:07 PM
To: Struts Users Mailing List
Subject: RE: Forms Beans and DAO (Best Practices
Subject: RE: Forms Beans and DAO (Best Practices)
The way I do it is -
BO -- DAO ---returns the recordset and not ValueObject. This RS is passed back to
the BO. which passes it to the ValueObject to build it.
The code will look something like this -
public class BO
{
CustomerVO custvo = new
:54 PM
To: Struts Users Mailing List
Subject: RE: Forms Beans and DAO (Best Practices)
How do you create a customer. (i.e.) Add a new record in the database from the data
entered in the HTML client.
The way I currently do is
1. The action form has the Value Object
2. The action class gets
of dependencies. Reuse will take hit with this approach but
that just me.
Ranjan.
-Original Message-
From: Jayaraman Dorai [mailto:[EMAIL PROTECTED]]
Sent: Friday, May 03, 2002 3:07 PM
To: Struts Users Mailing List
Subject: RE: Forms Beans and DAO (Best Practices)
I use it the same way
-Original Message-
From: Mike Duffy [mailto:[EMAIL PROTECTED]]
Sent: Friday, May 03, 2002 6:20 PM
To: Struts Users Mailing List
Subject: RE: Forms Beans and DAO (Best Practices)
Ranjan,
Thank you for your insightful comments.
Isn't it more likely that you would want to isolate
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