/*
    * Copyright 2001-2015 The Apache Software Foundation.
    * 
    * Licensed under the Apache License, Version 2.0 (the "License");
    * you may not use this file except in compliance with the License.
    * You may obtain a copy of the License at
    * 
    *      http://www.apache.org/licenses/LICENSE-2.0
    * 
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   *
   */
  package org.apache.juddi.api.util;
  
  import java.util.ArrayList;
  import java.util.Hashtable;
  import java.util.List;
  
  /**
   * Statuses of a query.    Successs represents a successful query, failed 
   * represents one that throws a DispositionFaultMessage.
   * 
   * @author <a href="mailto:tcunning@apache.org">Tom Cunningham</a>
   */
  public enum QueryStatus {
      SUCCESS("success"),
      FAILED ("failed");
  
      private String _status;
      private static Hashtable<String, QueryStatus> _statuses = null;
      
      QueryStatus(final String status) {
          _status = status;
      }
      
      public String getStatus() {
          return _status;
      }
      
      public synchronized static void initStatuses () {
          if (_statuses == null) {
              _statuses = new Hashtable();
  
              _statuses.put(QueryStatus.SUCCESS.getStatus(), QueryStatus.SUCCESS);
              _statuses.put(QueryStatus.FAILED.getStatus(), QueryStatus.FAILED);
          }
      }
  
      public static List<String> getQueries() {
          if (_statuses == null) {
              initStatuses();
          }
      
          List list = new ArrayList<String>(_statuses.keySet());
          return list;
      }
  
      /**
       * this doesn't appear to be used anywhere and will be removed in a future version
       * @param query
       * @return
       * @deprecated
       */
      public static QueryStatus fromStatus(final String status) {
          if (_statuses == null) {
              initStatuses();
          }
      
          if (_statuses.contains(status)) {
              return _statuses.get(status);
          } else {
              throw new IllegalArgumentException("Unrecognized status " + status);
          }       
      }
  }