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.TypedQuery;
  
  import org.apache.ambari.server.orm.RequiresSession;
  import org.apache.ambari.server.orm.entities.RemoteAmbariClusterEntity;
  
  import com.google.inject.Inject;
  import com.google.inject.Provider;
  import com.google.inject.Singleton;
  import com.google.inject.persist.Transactional;
  
  /**
   * Remote Ambari Cluster Data Access Object.
   */
  @Singleton
  public class RemoteAmbariClusterDAO {
    /**
     * JPA entity manager
     */
    @Inject
    private Provider<EntityManager> entityManagerProvider;
    @Inject
    private DaoUtils daoUtils;
  
  
    /**
     * Find all view instances.
     *
     * @return all views or an empty List
     */
    @RequiresSession
    public List<RemoteAmbariClusterEntity> findAll() {
      TypedQuery<RemoteAmbariClusterEntity> query = entityManagerProvider.get().
          createNamedQuery("allRemoteAmbariClusters", RemoteAmbariClusterEntity.class);
  
      return query.getResultList();
    }
  
    /**
     * Find Cluster by name
     * @param clusterName
     * @return
       */
    @RequiresSession
    public RemoteAmbariClusterEntity findByName(String clusterName) {
      TypedQuery<RemoteAmbariClusterEntity> query = entityManagerProvider.get().
              createNamedQuery("remoteAmbariClusterByName", RemoteAmbariClusterEntity.class);
      query.setParameter("clusterName", clusterName);
      return daoUtils.selectSingle(query);
    }
  
    /**
     * Find Cluster by Id
     * @param clusterId
     * @return
     */
    @RequiresSession
    public RemoteAmbariClusterEntity findById(Long clusterId) {
      TypedQuery<RemoteAmbariClusterEntity> query = entityManagerProvider.get().
        createNamedQuery("remoteAmbariClusterById", RemoteAmbariClusterEntity.class);
      query.setParameter("clusterId", clusterId);
      return daoUtils.selectSingle(query);
    }
  
    /**
     * Save a Cluster entity
     * @param entity
       */
    @Transactional
    public void save(RemoteAmbariClusterEntity entity) {
      entityManagerProvider.get().persist(entity);
    }
  
    /**
     * Update and merge a Remote Ambari Cluster entity
     * @param entity
       */
    @Transactional
    public void update(RemoteAmbariClusterEntity entity) {
      entityManagerProvider.get().merge(entity);
  
    }
  
    /**
     * Remove a cluster entity
     * @param clusterEntity
       */
    @Transactional
    public void delete(RemoteAmbariClusterEntity clusterEntity) {
      entityManagerProvider.get().remove(clusterEntity);
    }
  }
  