class JdbcUtils {

    static DbTypeParser getDbTypeParser() {
        if (dbTypeParser == null) {
            synchronized (JdbcUtils.class) {
                if (dbTypeParser == null) {
                    String sqlparserType = ConfigurationFactory.getInstance().getConfig(ConfigurationKeys.SQL_PARSER_TYPE, SqlParserType.SQL_PARSER_TYPE_DRUID);
                    dbTypeParser = EnhancedServiceLoader.load(DbTypeParser.class, sqlparserType);
                }
            }
        }
        return dbTypeParser;
    }

    private  JdbcUtils();

}