DataDirect jdbc drivers (DB2, Oracle, Sybase, MS SQL Server) don't
work in Java Studio Enterprise 8 (Buzz) after changes made in
DatabaseConnection.

See bug CR 6250647 "can not establish connection to DataDirect drivers"
in Bugster and cvs log:

----------------------------
revision 1.34
date: 2005/03/25 15:07:52; author: nnguyen; state: Exp; lines: +42 -17
issue 56861 Use service lookup for OpenConnectionInterface
----------------------------

I've investigated source code and found that invoking of
'New Database Connection' dialog (select a driver and call
'Connect Using...' item) runs default constructor of
DatabaseConnection.

In previous version (1.32) it was

/** Default constructor */
public DatabaseConnection() {
  propertySupport = new PropertyChangeSupport(this);

// For Java Studio Enterprise. Create instanceof OpenConnection
  try {
    ClassLoader cl = Thread.currentThread().getContextClassLoader();
    openConnection =  (OpenConnectionInterface)
    Class.forName(bundle.getString("CLASS_open_connection"), true,
    cl).newInstance();
  } catch(Exception ex) {
    org.openide.ErrorManager.getDefault().notify(ex);
  }
}

where openConnection variable was set by my implementation
com.sun.tools.dbdrivers.JseOpenConnection which sets/resets
password for unlocking driver.

But now constructor is:

/** Default constructor */
public DatabaseConnection() {
  propertySupport = new PropertyChangeSupport(this);
  openConnection = new OpenConnection();
}

where openConnection is empty default implementation.

/** Default constructor */
public DatabaseConnection() {
  propertySupport = new PropertyChangeSupport(this);

  // For Java Studio Enterprise. Create instanceof OpenConnection
  try {
    Collection c = getOpenConnections();
    for (Iterator i=c.iterator(); i.hasNext();) {
      OpenConnectionInterface oci = (OpenConnectionInterface) i.next();
      openConnection = oci;
      break;
    }
  }
  catch(Exception ex) {
    ErrorManager.getDefault().notify(ErrorManager.INFORMATIONAL, ex);
  }
}

It seems not a good patch but might be fast way to solve the problem.