content: /*
   * Copyright (C) 2012-2023 52°North Spatial Information Research GmbH
   *
   * This program is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 as published
   * by the Free Software Foundation.
   *
   * If the program is linked with libraries which are licensed under one of
   * the following licenses, the combination of the program with the linked
   * library is not considered a "derivative work" of the program:
   *
   *     - Apache License, version 2.0
   *     - Apache Software License, version 1.0
   *     - GNU Lesser General Public License, version 3
   *     - Mozilla Public License, versions 1.0, 1.1 and 2.0
   *     - Common Development and Distribution License (CDDL), version 1.0
   *
   * Therefore the distribution of the program linked with libraries licensed
   * under the aforementioned licenses, is permitted by the copyright holders
   * if the distribution is compliant with both the GNU General Public
   * License version 2 and the aforementioned licenses.
   *
   * This program is distributed in the hope that it will be useful, but
   * WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
   * Public License for more details.
   */
  package org.n52.sos.ds.hibernate.dao.observation.series;
  
  import java.util.Collections;
  import java.util.List;
  
  import org.hibernate.Criteria;
  import org.hibernate.Session;
  import org.hibernate.criterion.Restrictions;
  import org.n52.series.db.beans.DatasetEntity;
  import org.n52.series.db.beans.RelatedDatasetEntity;
  import org.n52.sos.ds.hibernate.util.HibernateHelper;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  public class RelatedSeriesDAO {
  
      private static final Logger LOGGER = LoggerFactory.getLogger(RelatedSeriesDAO.class);
  
      public List<RelatedDatasetEntity> getRelatedSeries(DatasetEntity series, Session session) {
          return getRelatedSeries(series.getId(), session);
      }
  
      @SuppressWarnings("unchecked")
      private List<RelatedDatasetEntity> getRelatedSeries(long series, Session session) {
          if (HibernateHelper.isEntitySupported(RelatedDatasetEntity.class)) {
              Criteria c = getDefaultCriteria(session);
              c.add(Restrictions.eq(RelatedDatasetEntity.PROPERTY_ITEM, series));
              LOGGER.trace("QUERY getRelatedSeries(): {}", HibernateHelper.getSqlString(c));
              return c.list();
          }
          return Collections.EMPTY_LIST;
      }
  
      private Criteria getDefaultCriteria(Session session) {
          return session.createCriteria(RelatedDatasetEntity.class).setResultTransformer(Criteria.DISTINCT_ROOT_ENTITY);
      }
  
  }
  