Re: Data driven struts application

[Robert S. Sfeir]

Yep, I agree with David.  Your code will invariably be more usable and 
be more presentation layer friendly if you always return a Collection 
of some type.  The Collection would contain beans of the object type 
you're working with.  Further if you're using for example an ArrayList 
to populate a List, and later you decide you want to change it to 
something else for say performance reasons or what ever, you don't go 
busting the whole presentation layer because of it, since the 
presentation layer is working with a Collection and knows about nothing 
else.  It is *sometimes* better to be as generic as possible with the 
underlying layers of your code, than hooking your presentation code in 
so tight that maintenance of the app is greatly affected.

On Friday, March 14, 2003, at 10:57 AM, David Graham wrote:

Both solution 1 and 2 are far better than using a ResultSet in a jsp.  
I usually use a Collection of JavaBeans.

David



From: Guido <[EMAIL PROTECTED]>
Reply-To: "Struts Users Mailing List" <[EMAIL PROTECTED]>
To: Struts Users Mailing List <[EMAIL PROTECTED]>
Subject: Data driven struts application
Date: Fri, 14 Mar 2003 16:24:08 +0100
95% of my struts web apps follow this flow:

1. User selection in a JSP
2. Action class performs a SQL query
3. Return ActionForward to a new JSP that renders the query ResultSet
What is the best practice to show SQL query results (ResultSet) to 
the user? (I mean how communication between view and controller 
should be when I do extensive use of ResulSets)

Actually, we are including the ResultSet in the request :(, and 
processing it in the JSP (using a scriptlet). But I dont like this 
aproach very much, so I wonder if it would be better to:

+ solution 1. Use a RowSetDynaClass instead of the ResultSet.
+ solution 2. Use a JavaBean with getters and setters (maybe as 
database column names) and include a JavaBean collection in the 
request as a Value Object (?)
+ solution 3. I don't know... :(

Thank you very much,
Guido.
PD. Is it better to use a collection of JavaBeans or use just one 
JavaBean whose properties return a collection??



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