Oracle Function from Java

Question

I am trying to call an Oracle function from my Java code something like this :

Java

CallableStatement cstmt = p_con.prepareCall("{? = CALL FXRATE_ENTITY(?, ?, ?, ?, ?)}");
         cstmt.registerOutParameter(1, java.sql.Types.INTEGER);

         cstmt.setString(2, "SCR");
         cstmt.setString(3,l_srccur);
         cstmt.setString(4, l_tfcurr);
         cstmt.setString(5, "B001");

         cstmt.execute();
       String res = cstmt.getString(1);

but i am getting an exception

java.sql.SQLException: Missing IN or OUT parameter at index:: 6

for which i am not sure what i am doing wrong.Also this is the function I am trying to call

Oracle Function

FUNCTION FXRATE_ENTITY(CODCURRBASE IN VARCHAR, LCODCURRFROM IN VARCHAR, LCODCURRTO IN VARCHAR, LIDENTITY IN VARCHAR)
  RETURN NUMBER IS
  CODCUR_L VARCHAR2(3);
BEGIN
  IF (LCODCURRTO = '*') THEN
    RETURN NVL(FXRATE(CODCURRBASE, LCODCURRFROM, CODCURRBASE, LIDENTITY),
               0);
  ELSE
    RETURN NVL(FXRATE(CODCURRBASE, LCODCURRFROM, LCODCURRTO, LIDENTITY), 0);
  END IF;
END;

Any help or suggestions will be appreciated. Thanks in advance.

Answer 1

You have an extra ? in the prepare call statement which is not required as the first parameter is considered as the return parameter, so registering the out parameter using registerOutParameter is what we need.

Change the statement to below and it should work,

CallableStatement cstmt = p_con.prepareCall("{? = CALL FXRATE_ENTITY(?, ?, ?, ?)}");