content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you 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.ambari.server.orm.dao;
  
  import java.util.List;
  
  import jakarta.persistence.EntityManager;
  import jakarta.persistence.NoResultException;
  import jakarta.persistence.TypedQuery;
  
  import org.apache.ambari.server.orm.RequiresSession;
  import org.apache.ambari.server.orm.entities.HostComponentStateEntity;
  
  import com.google.inject.Inject;
  import com.google.inject.Provider;
  import com.google.inject.Singleton;
  import com.google.inject.persist.Transactional;
  
  @Singleton
  public class HostComponentStateDAO {
    @Inject
    Provider<EntityManager> entityManagerProvider;
    @Inject
    DaoUtils daoUtils;
  
    @Inject
    HostDAO hostDAO;
  
    @RequiresSession
    public HostComponentStateEntity findById(long id) {
      return entityManagerProvider.get().find(HostComponentStateEntity.class, id);
    }
  
    @RequiresSession
    public List<HostComponentStateEntity> findAll() {
      final TypedQuery<HostComponentStateEntity> query = entityManagerProvider.get().createNamedQuery("HostComponentStateEntity.findAll", HostComponentStateEntity.class);
      try {
        return query.getResultList();
      } catch (NoResultException ignored) {
      }
      return null;
    }
  
    /**
     * Retrieve all of the Host Component States for the given host.
     *
     * @param hostName HOst name
     * @return Return all of the Host Component States that match the criteria.
     */
    @RequiresSession
    public List<HostComponentStateEntity> findByHost(String hostName) {
      final TypedQuery<HostComponentStateEntity> query = entityManagerProvider.get().createNamedQuery("HostComponentStateEntity.findByHost", HostComponentStateEntity.class);
      query.setParameter("hostName", hostName);
  
      return daoUtils.selectList(query);
    }
  
    /**
     * Retrieve all of the Host Component States for the given service.
     *
     * @param serviceName Service Name
     * @return Return all of the Host Component States that match the criteria.
     */
    @RequiresSession
    public List<HostComponentStateEntity> findByService(String serviceName) {
      final TypedQuery<HostComponentStateEntity> query = entityManagerProvider.get().createNamedQuery("HostComponentStateEntity.findByService", HostComponentStateEntity.class);
      query.setParameter("serviceName", serviceName);
  
      return daoUtils.selectList(query);
    }
  
    /**
     * Retrieve all of the Host Component States for the given service and component.
     *
     * @param serviceName Service Name
     * @param componentName Component Name
     * @return Return all of the Host Component States that match the criteria.
     */
    @RequiresSession
    public List<HostComponentStateEntity> findByServiceAndComponent(String serviceName, String componentName) {
      final TypedQuery<HostComponentStateEntity> query = entityManagerProvider.get().createNamedQuery("HostComponentStateEntity.findByServiceAndComponent", HostComponentStateEntity.class);
      query.setParameter("serviceName", serviceName);
      query.setParameter("componentName", componentName);
  
      return daoUtils.selectList(query);
    }
  
    /**
     * Retrieve the single Host Component State for the given unique service, component, and host.
     *
     * @param serviceName Service Name
     * @param componentName Component Name
     * @param hostName Host Name
     * @return Return all of the Host Component States that match the criteria.
     */
    @RequiresSession
    public HostComponentStateEntity findByServiceComponentAndHost(String serviceName, String componentName, String hostName) {
      final TypedQuery<HostComponentStateEntity> query = entityManagerProvider.get().createNamedQuery("HostComponentStateEntity.findByServiceComponentAndHost", HostComponentStateEntity.class);
      query.setParameter("serviceName", serviceName);
      query.setParameter("componentName", componentName);
      query.setParameter("hostName", hostName);
  
      return daoUtils.selectSingle(query);
    }
  
    /**
     * Retrieve the single Host Component State for the given unique cluster,
     * service, component, and host.
     *
     * @param clusterId
     *          Cluster ID
     * @param serviceName
     *          Service Name
     * @param componentName
     *          Component Name
     * @param hostId
     *          Host ID
     * @return Return all of the Host Component States that match the criteria.
     */
    @RequiresSession
    public HostComponentStateEntity findByIndex(Long clusterId, String serviceName,
        String componentName, Long hostId) {
      final TypedQuery<HostComponentStateEntity> query = entityManagerProvider.get().createNamedQuery(
          "HostComponentStateEntity.findByIndex", HostComponentStateEntity.class);
      query.setParameter("clusterId", clusterId);
      query.setParameter("serviceName", serviceName);
      query.setParameter("componentName", componentName);
      query.setParameter("hostId", hostId);
  
      return daoUtils.selectSingle(query);
    }
  
    @Transactional
    public void refresh(HostComponentStateEntity hostComponentStateEntity) {
      entityManagerProvider.get().refresh(hostComponentStateEntity);
    }
  
    @Transactional
    public void create(HostComponentStateEntity hostComponentStateEntity) {
      entityManagerProvider.get().persist(hostComponentStateEntity);
    }
  
    /**
     * Merges the managed entity
     *
     * @param hostComponentStateEntity
     * @return
     */
    @Transactional
    public HostComponentStateEntity merge(HostComponentStateEntity hostComponentStateEntity) {
      EntityManager entityManager = entityManagerProvider.get();
      hostComponentStateEntity = entityManager.merge(hostComponentStateEntity);
  //    Flush call here causes huge performance loss on bulk update of host components
  //    we should consider other solutions for issues with concurrent transactions
  //    entityManager.flush();
      return hostComponentStateEntity;
    }
  
    @Transactional
    public void remove(HostComponentStateEntity hostComponentStateEntity) {
      entityManagerProvider.get().remove(hostComponentStateEntity);
    }
  
    /**
     * @param serviceName
     * @param componentName
     * @param version
     * @return a list of host components whose version that does NOT match the give version
     */
    @RequiresSession
    public List<HostComponentStateEntity> findByServiceAndComponentAndNotVersion(String serviceName,
        String componentName, String version) {
  
      final TypedQuery<HostComponentStateEntity> query = entityManagerProvider.get().createNamedQuery(
          "HostComponentStateEntity.findByServiceAndComponentAndNotVersion", HostComponentStateEntity.class);
  
      query.setParameter("serviceName", serviceName);
      query.setParameter("componentName", componentName);
      query.setParameter("version", version);
  
      return daoUtils.selectList(query);
    }
  }
  