/**
 * 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();
    }
}
