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Java example source code file (PersistService.java)

This example Java source code file (PersistService.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

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Java - Java tags/keywords

persistservice

The PersistService.java Java example source code

/**
 * Copyright (C) 2010 Google, Inc.
 *
 * 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 com.google.inject.persist;

/**
 * Persistence provider service. Use this to manage the overall
 * startup and stop of the persistence module(s).
 *
 * TODO(dhanji): Integrate with Service API when appropriate.
 *
 * @author dhanji@gmail.com (Dhanji R. Prasanna)
 */
public interface PersistService {

  /**
   * Starts the underlying persistence engine and makes guice-persist ready for
   * use. For instance, with JPA, it creates an EntityManagerFactory and may
   * open connection pools. This method must be called by your code prior to
   * using any guice-persist or JPA artifacts. If already started,
   * calling this method does nothing, if already stopped, it also does
   * nothing.
   */
  void start();

  /**
   * Stops the underlying persistence engine. For instance, with JPA, it
   * closes the {@code EntityManagerFactory}. If already stopped, calling this
   * method does nothing. If not yet started, it also does nothing.
   */
  void stop();
}

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