code: /*
   * Copyright © 2014-2017 EntIT Software LLC, a Micro Focus company (L.P.)
   *
   * Licensed 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 io.cloudslang.engine.partitions.repositories;
  
  import io.cloudslang.engine.partitions.entities.PartitionGroup;
  import org.springframework.data.jpa.repository.JpaRepository;
  //import org.springframework.data.jpa.repository.Lock;
  import org.springframework.data.jpa.repository.Modifying;
  import org.springframework.data.jpa.repository.Query;
  import org.springframework.data.repository.query.Param;
  
  //import static javax.persistence.LockModeType.PESSIMISTIC_READ;
  
  /**
   * Date: 4/23/12
   *
   */
  public interface PartitionGroupRepository extends JpaRepository<PartitionGroup,Long> {
  
  //	@Lock(PESSIMISTIC_READ)
  	PartitionGroup findByName(String name);
  
  	@Modifying
  	@Query("update PartitionGroup p set p.activePartition = p.activePartition where p.name= :name")
  	int lock(@Param("name") String name);
  }
  