OfyHelper.java

/**
 * Copyright 2014-2015 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.
 */
//[START all]
package com.example.guestbook;

import com.googlecode.objectify.ObjectifyService;

import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;

/**
 * OfyHelper, a ServletContextListener, is setup in web.xml to run before a JSP is run.  This is
 * required to let JSP's access Ofy.
 **/
public class OfyHelper implements ServletContextListener {
  public void contextInitialized(ServletContextEvent event) {
    // This will be invoked as part of a warmup request, or the first user request if no warmup
    // request.
    ObjectifyService.register(Guestbook.class);
    ObjectifyService.register(Greeting.class);
  }

  public void contextDestroyed(ServletContextEvent event) {
    // App Engine does not currently invoke this method.
  }
}
//[END all]