* getConnection.
*/
public void start(Xid xid, int flags) throws XAException {
doStart (xid, flags); // do state checks and set state
curCon.commitOnPrepare = false; // we will do a REAL prepare
ConnectionExtensions conExt
= (ConnectionExtensions)curCon.con; // get the InstantDB connection
conExt.startGlobalTransaction (xid); // associate the transaction with the global TX
curCon = null; // no longer owned by this object
con = null; // ditto
}