TOPLINK-4002 No suitable driverCode with MySql5

Question

Hello,
I try to use Jdev 10.1.3 and Toplink and driver mysql-connector-java-3.1.12-bin.jar to access a MySql 5 server db.
I can open a Jdbc connection to MySql db without problem.
I could generate the Toplink Mapping and create the Toplink Object Relational Map.
But when i try to create a TopLink Database Session to MySql, i receive the message:
Exception [TOPLINK-4002] (Oracle TopLink - 10g Release 3 (10.1.3.0.0) (Build 060118)): oracle.toplink.exceptions.DatabaseException
Exception interne : java.sql.SQLException: No suitable driverCode d'erreur : 0
My source code to create the Database Session:
XMLSessionConfigLoader xmlLoader = new oracle.toplink.tools.sessionconfiguration.XMLSessionConfigLoader("META-INF/sessions.xml");
oracle.toplink.tools.sessionmanagement.SessionManager sessionManager = oracle.toplink.tools.sessionmanagement.SessionManager.getManager();
DatabaseSession topLinkSession = (DatabaseSession)sessionManager.getSession(xmlLoader, mySession, new BusinessObjectFactory().getClass().getClassLoader());
Can anybody help me?
Jean-Marc

Answer 1

Jean-Marc,
It sounds like your login information is incorrectly configured or you do have the JDBC library on your project classpath. To test out the TopLink configuration I typically write a small test client or JUnit test case that verifies my configuration and ability to login.
Here is a simple block of code you can use to diagnose the problem:
package testing;
import java.util.List;
import junit.framework.TestCase;
import oracle.toplink.sessions.Session;
import oracle.toplink.tools.sessionmanagement.SessionManager;
import oracle.toplink.util.SessionFactory;
import toplink.example.model.Employee;
public class ConnectTest extends TestCase {
    public void test() throws Exception {
        SessionFactory factory = new SessionFactory("default");
        Session session = factory.acquireSession();
        List<Employee> emps = session.readAllObjects(Employee.class);
        for (Employee emp: emps) {
            System.out.println("READ> " + emp);
        session.release();
        SessionManager.getManager().destroyAllSessions();
}This assume your sessions configuration file is located at: 'META-INF/sessions.xml' and that the session name is 'default' if these are different then alter the SessionFactory constructor.
Assuming this is all in place you should simply ensure that the MySQL JDBC library is on your library classpath for the project and execute the test case (or sample client's main()).
Doug