Variable nr of params in SQLJ

Question

Hi,
I'm using SQLJ for some time now, and it works great.. There is however something that I can't seem to do in SQLJ..
Suppose my query is the following:
SELECT * FROM table WHERE nr IN (3,5,6);
How can I do this in SQLJ and have 3,5,6 come from java? (it must be a variable number of numbers)
I was thinking something along the lines of:
int numbers[];
#sql { SELECT * FROM table WHERE nr IN (:numbers) };
But this doesn't seem to work. Anybody any idea?
Greetings,
Ivo
null

Answer 1

Sorry, it can't be done - SQLJ only supports static SQL with a fixed number of bind variables. You could revert to JDBC along the following lines:
String nums = ...; //comma-separated list of numbers
Connection conn = DefaultContext.getDefaultContext().getConnection();
Statement s = conn.createStatement();
ResultSet rs = s.executeQuery("SELECT * FROM table WHERE nr IN ("+nums+")");
If you want to use the result set as a SQLJ iterator, you can do so as follows.
MySqljIterator it;
#sql it = { CAST :rs };
it.close(); // also closes rs
If you know that you have at most a handful (i.e. 5 or so) of numbers, you could also write 5 different SQLJ statements binding between 1 and 5 numbers.
-- Ekkehard