3.1

I need to dynamically select the columns of a database table for persistance. My data comes as an XML and using some rules, the db table column to which the data (from a particular xml node) needs to be persisted. This I do using a hashmap but I need to be able to map the keys of the map to db table colums.

I could think of using a direct class-less XML to table mapping using a programatically generated mapping file.

Now how do I read the data back from the table to the same XML structure
Any strategies or suggestions??