loadConfiguration(jdoConf, null, null);
DatabaseRegistry.loadDatabase(name, engine, datasource, mapping, txManager);  _classLoader = null; _entityResolver = null;  LOG.debug("Successfully loaded JDOManager form preconfigured datasource");
    public static void loadConfiguration(final JdoConf jdoConf)    throws MappingException {        loadConfiguration(jdoConf, null, null);    }