...
empresaSession = test.factoryEmpresa.openSession();
geoxSession = test.factoryGeox.openSession();
...
tx = empresaSession.beginTransaction();

/* empresaTablesNames is an enumeration with strings */
/* stringshandler returns just a "from ..." */
/* ObjectsTWO is a hashtable  */

while (empresaTablesNames.hasMoreElements()) {
      String empresaClass = (String)(empresaTablesNames.nextElement());
               String query = stringsHandler.getSelectFrom(empresaClass);
               ObjectsTWO.put(empresaClass, empresaSession.find(query));
}
...
empresaSession.close();