Java.sql exception for rs.nesxt() ( nested statements)

Question

I have a problem with java.sql.I am getting an Invalid handle exception for nested result sets ...
example:-
//Conn is the common connection
Statement s1 = conn.createStatement();
rs1 = s1.executeQuery(query1);
while (rs.next){
Statement s2 = conn.createStatement();
rs2= s2.executeQuery(query2)
while (rs2.next){
The rs2 resultset works fine,but when it gets back into the outer while loop the exception is thrown.
I know that the problem is becuase the nested statements are usign the same connection.
I know of two ways to work around this
(1) use different connections
(2) remove nesting (save the result rs1,and then retrieve rs2)
But I wnated to know if anyone knows of any other way to work around this problem.
let me know.
Thanks.

Answer 1

Each connection has a single storage area for iteration, metadata, etc. Obviously you are aware that outer loop is unable to proceed because iteration data is of a different format from the inner sql query. It is not a good idea to do more than a single, or small set of queries on a single connection object. Would you consider a connection pool? They are not for the timid programmer, but they do take advantage of using connection objects much like pointers, with the ability to pop them into and out of a collection, ready to roll once the connection object is setup and ready for action much like a pointer that is properly assigned can be passed and always ready for action. The entire connection object (and metadata) is stored in the collection data structure. My advice is to keep it simple! It is easy to get too carried away with connection pools.