Cocoon desing /Implimentaion Question

[Pratik Machchar <pr...@elitecore.com>]

Dear Friends,
I want to develop a application using Tomcat/Cocoon.
Basically I want to use Cocoon for code View Separation.
My application generates data based on user request and produce some output.
Now as I don't know much about Cocoon.
I have few doubts about design of My application and that is which approach is to use.

I have following approaches in my mind.
1)    Based on user request Dynamically generate XML data (which conation xslt) and forward that request to cocoon for further             processing 
    now problem with this approach is how to forward my request to cocoon? 
2)    Generate A Xml File per report on some specific period 
        and use XSLT for further filtering of data .
        problem with this approach is that 
        -       This will increase my xml file size a lot and 
                May my application become slow.
        -This May make My XSLT complex.
        - and I need to use reference of same data xml for different reports and import it every time and use different XSL per report
3) Use SQL XSP taglib
    -this seems me the right way
    -but no concrete examples available and how powerful this is that I don't know
   
Dear friends
Thanks for reading this mail.
If any other way is possible ?
does I am missing something?
If I am wrong then please let me know.
and please guide me .

Thanks in advance.

Pratik Machchar