Hi Rama,
what i understand is you want to display some fields from one node and another field from another node right ?
actual thing is this is tree view in that we will get the field which are there in get_table_line_sample method.
so you have to display all the required field from node1,2,3 in the table view then based on hierarchy you have to display data required fields in a hierarchy.. eg: in first node have to display inputfield1,2,3,4,5,6.. then next hierarchy inputfield2,4,5,6. etc..
if this is your requirement then i will guide you how to do..
Thanks & Regards,
Srinivas.