Java Development Tools

I have to create the reports using ADF 11g jdeveloper tool.
i am creating fusion web application.
My requirement is to get data from a table dynamically for the user selected rows and columns.
In the Report,i have to get data from table for user selected timeperiod and businessdimension.
means user first selects the business Dimensions from lov for which they want to see the data in table.
(in reports i am showing business Dimension as rows)
in the same way user selects the time periods which are showing as columns.
after selecting the rows and columns ,if user press refresh buttion the data should come from the Database table.

Here i have to change the view object definition dynamically depending on the user selected values to show the data in report.

If anyone did the same thing already pls guide me.or if any helpful docs you have pls provide me.

Sailaja