content: /*
   * Solo - A small and beautiful blogging system written in Java.
   * Copyright (c) 2010-present, b3log.org
   *
   * Solo is licensed under Mulan PSL v2.
   * You can use this software according to the terms and conditions of the Mulan PSL v2.
   * You may obtain a copy of Mulan PSL v2 at:
   *         http://license.coscl.org.cn/MulanPSL2
   * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
   * See the Mulan PSL v2 for more details.
   */
  package org.b3log.solo.service;
  
  import org.apache.commons.lang3.StringUtils;
  import org.b3log.latke.Keys;
  import org.b3log.latke.ioc.Inject;
  import org.b3log.latke.repository.Transaction;
  import org.b3log.latke.service.ServiceException;
  import org.b3log.latke.service.annotation.Service;
  import org.b3log.solo.model.Option;
  import org.b3log.solo.repository.OptionRepository;
  import org.json.JSONObject;
  
  /**
   * Option management service.
   *
   * @author <a href="http://88250.b3log.org">Liang Ding</a>
   * @version 1.0.0.0, Apr 16, 2013
   * @since 0.6.0
   */
  @Service
  public class OptionMgmtService {
  
      /**
       * Option repository.
       */
      @Inject
      private OptionRepository optionRepository;
  
      /**
       * Adds or updates the specified option.
       *
       * @param option the specified option
       * @return option id
       * @throws ServiceException
       */
      public String addOrUpdateOption(final JSONObject option) throws ServiceException {
          final Transaction transaction = optionRepository.beginTransaction();
  
          try {
              String id = option.optString(Keys.OBJECT_ID);
  
              if (StringUtils.isBlank(id)) {
                  id = optionRepository.add(option);
              } else {
                  final JSONObject old = optionRepository.get(id);
  
                  if (null == old) { // The id is specified by caller
                      id = optionRepository.add(option);
                  } else {
                      old.put(Option.OPTION_CATEGORY, option.optString(Option.OPTION_CATEGORY));
                      old.put(Option.OPTION_VALUE, option.optString(Option.OPTION_VALUE));
  
                      optionRepository.update(id, old);
                  }
              }
  
              transaction.commit();
  
              return id;
          } catch (final Exception e) {
              if (transaction.isActive()) {
                  transaction.rollback();
              }
  
              throw new ServiceException(e);
          }
      }
  
      /**
       * Removes the option specified by the given option id.
       *
       * @param optionId the given option id
       * @throws ServiceException service exception
       */
      public void removeOption(final String optionId) throws ServiceException {
          final Transaction transaction = optionRepository.beginTransaction();
  
          try {
              optionRepository.remove(optionId);
  
              transaction.commit();
          } catch (final Exception e) {
              if (transaction.isActive()) {
                  transaction.rollback();
              }
  
              throw new ServiceException(e);
          }
      }
  }
  