/*
    * 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.syncope.core.persistence.jpa.dao;
  
  import java.time.OffsetDateTime;
  import javax.persistence.Query;
  import org.apache.syncope.core.persistence.api.dao.BatchDAO;
  import org.apache.syncope.core.persistence.api.entity.Batch;
  import org.apache.syncope.core.persistence.jpa.entity.JPABatch;
  import org.springframework.transaction.annotation.Transactional;
  
  @Transactional(rollbackFor = Throwable.class)
  public class JPABatchDAO extends AbstractDAO<Batch> implements BatchDAO {
  
      @Transactional(readOnly = true)
      @Override
      public Batch find(final String key) {
          return entityManager().find(JPABatch.class, key);
      }
  
      @Override
      public Batch save(final Batch batch) {
          return entityManager().merge(batch);
      }
  
      @Override
      public void delete(final String key) {
          Batch batch = find(key);
          if (batch == null) {
              return;
          }
  
          entityManager().remove(batch);
      }
  
      @Override
      public int deleteExpired() {
          Query query = entityManager().createQuery(
                  "DELETE FROM " + JPABatch.class.getSimpleName() + " e WHERE e.expiryTime < :now");
          query.setParameter("now", OffsetDateTime.now());
          return query.executeUpdate();
      }
  }