public QueryCustomizer getQueryCustomizer() {
if (url.contains("mysql")) {
return new MySQLQueryCustomizer();
} else if (url.contains("sqlserver")) {
return new MSSQQueryCustomizer();
} else if (url.contains("postgresql")) {
return new MSSQQueryCustomizer();
} else if (url.contains("odbc")) {
return new MSAccessQueryCustomizer();
} else {
return null;
}