rich:extendeddatatable to get the first row object during column filterby and pagination

Question

I have a extended table to be populated based on the search result. In the extendeddatatable in one page there will be 10 rows displayed, with the first column as a link.When user clicks on the link more details of the row object will be displayed below the rich:extendeddatatable.By default the first row details should be displayed below the rich:extendeddatatable. Whenever I do pagination of filterby I am not geting the default first row correctly. When I do pagination or filterby the whatever the default value it was before pagination or filterby will be displayed. How can I get the details of the first row object when I do pagination or filter by