private PDP(ConfigElement config) throws PDPInitializeException {
   try {
     logger = LogFactory.getLogger();
     status = new PDPStatus();
     loadConfigurations(config);
     initialize();
   } catch (Exception e) {
     throw new PDPInitializeException("There is error occurs while initialize PDP.", e);
   }
 }
 public XMLFileDataStore(ConfigElement config) {
   logger = LogFactory.getLogger();
   loadConfigurations(config);
 }