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;
  
  import java.util.List;
  import java.util.Optional;
  
  import javax.inject.Inject;
  
  import org.hibernate.HibernateException;
  import org.hibernate.Session;
  import org.n52.series.db.old.HibernateSessionStore;
  import org.n52.shetland.ogc.om.ObservationStream;
  import org.n52.shetland.ogc.om.OmObservation;
  import org.n52.shetland.ogc.ows.exception.NoApplicableCodeException;
  import org.n52.shetland.ogc.ows.exception.OwsExceptionReport;
  import org.n52.shetland.ogc.sos.SosConstants;
  import org.n52.shetland.ogc.sos.request.GetObservationByIdRequest;
  import org.n52.shetland.ogc.sos.response.GetObservationByIdResponse;
  import org.n52.sos.ds.dao.GetObservationByIdDao;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  import org.springframework.transaction.annotation.Transactional;
  
  import com.google.common.collect.Lists;
  
  public class GetObservationByIdHandler extends AbstractGetObservationByIdHandler {
  
      private static final Logger LOGGER = LoggerFactory.getLogger(GetObservationByIdHandler.class);
  
      private HibernateSessionStore sessionStore;
  
      private GetObservationByIdDao dao;
  
      public GetObservationByIdHandler() {
          super(SosConstants.SOS);
      }
  
      @Inject
      public void setConnectionProvider(HibernateSessionStore sessionStore) {
          this.sessionStore = sessionStore;
      }
  
      @Inject
      public void setGetObservationByIdDao(Optional<GetObservationByIdDao> getObservationByIdDao) {
          if (getObservationByIdDao.isPresent()) {
              this.dao = getObservationByIdDao.get();
          }
      }
  
      @Override
      @Transactional()
      public GetObservationByIdResponse getObservationById(GetObservationByIdRequest request) throws OwsExceptionReport {
          Session session = null;
          try {
              session = sessionStore.getSession();
              GetObservationByIdResponse response = new GetObservationByIdResponse();
              response.setService(request.getService());
              response.setVersion(request.getVersion());
              response.setResponseFormat(request.getResponseFormat());
              response.setResultModel(request.getResultModel());
              List<OmObservation> omObservations = Lists.newArrayList();
              if (dao != null) {
                  omObservations.addAll(dao.queryObservationsById(request, session));
              }
              response.setObservationCollection(ObservationStream.of(omObservations));
              return response;
          } catch (HibernateException he) {
              throw new NoApplicableCodeException().causedBy(he).withMessage("Error while querying observation data!");
          } finally {
              sessionStore.returnSession(session);
          }
      }
  
      @Override
      public boolean isSupported() {
          return dao != null;
      }
  }
  