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 com.google.inject.persist.jpa;
  
  import java.util.Map;
  import java.util.concurrent.atomic.AtomicBoolean;
  
  import com.google.inject.Inject;
  
  /**
   * Override non-public class limitations as we need non-interface method
   */
  public class AmbariJpaPersistService extends JpaPersistService {
  
    private final AtomicBoolean jpaStarted = new AtomicBoolean(false);
  
    @Inject
    public AmbariJpaPersistService(@Jpa String persistenceUnitName, @Jpa Map<?, ?> persistenceProperties) {
      super( JpaPersistOptions.builder()
              .setAutoBeginWorkOnEntityManagerCreation(true)
              .build(), persistenceUnitName, persistenceProperties);
    }
  
    /**
     * Starts the PersistService if it has not been previously started.
     */
    @Override
    public synchronized void start() {
      if (!jpaStarted.get()) {
        super.start();
        jpaStarted.set(true);
      }
    }
  
    /**
     * Returns whether JPA has been started or not
     *
     * @return <code>true</code> if JPA has been started; <code>false</code> if JPA has not been started
     */
    public boolean isStarted() {
      return jpaStarted.get();
    }
  
  }
  