AdminContextLoaderListener.java

/*
 * Copyright 2014-2016 CyberVision, 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 org.kaaproject.kaa.server.control.service.admin;

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Service;
import org.springframework.web.context.ContextLoader;

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

@Service
public final class AdminContextLoaderListener extends ContextLoader
    implements ApplicationContextAware, ServletContextListener {
  private ApplicationContext applicationContext;

  @Override
  public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
    this.applicationContext = applicationContext;
  }

  /**
   * Returns the parent application context as set by the
   * {@link ApplicationContextAware} interface.
   *
   * @return The initial ApplicationContext that loads the Jetty server.
   */
  @Override
  protected ApplicationContext loadParentContext(ServletContext servletContext) {
    return this.applicationContext;
  }

  @Override
  public void contextInitialized(ServletContextEvent sce) {
    super.initWebApplicationContext(sce.getServletContext());
  }

  @Override
  public void contextDestroyed(ServletContextEvent sce) {
    //not needed
  }
}