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
   * <p>
   * http://www.apache.org/licenses/LICENSE-2.0
   * <p>
   * 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.atlas.repository.audit.rdbms;
  
  import org.janusgraph.diskstorage.rdbms.RdbmsStoreManager;
  
  import javax.persistence.EntityManager;
  import javax.persistence.EntityTransaction;
  
  public class RdbmsTransaction implements AutoCloseable {
      private final EntityManager     em;
      private final EntityTransaction trx;
  
      public RdbmsTransaction() {
          this.em  = RdbmsStoreManager.getInstance().getDaoManager().createEntityManager();
          this.trx = em.getTransaction();
  
          this.trx.begin();
      }
  
      public EntityManager getEntityManager() {
          return em;
      }
  
      public void commit() {
          if (trx.isActive()) {
              trx.commit();
          }
      }
  
      @Override
      public void close() {
          if (trx.isActive()) {
              trx.rollback();
          }
  
          em.close();
      }
  }
  