Java tutorial
/** * Copyright 2014 Telefonica Investigacin y Desarrollo, S.A.U <br> * This file is part of FI-WARE project. * <p> * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with * the License. * </p> * <p> * You may obtain a copy of the License at:<br> * <br> * http://www.apache.org/licenses/LICENSE-2.0 * </p> * <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. * </p> * <p> * See the License for the specific language governing permissions and limitations under the License. * </p> * <p> * For those usages not covered by the Apache version 2.0 License please contact with opensource@tid.es * </p> */ package com.telefonica.euro_iaas.paasmanager.bootstrap; import java.util.Properties; import javax.persistence.EntityManagerFactory; import javax.servlet.ServletContextEvent; import javax.servlet.ServletContextListener; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.web.context.WebApplicationContext; import org.springframework.web.context.support.WebApplicationContextUtils; import com.telefonica.euro_iaas.paasmanager.exception.PaasManagerServerRuntimeException; import com.telefonica.fiware.commons.properties.PropertiesProvider; import com.telefonica.fiware.commons.properties.impl.PropertiesProviderFactoryImpl; /** * Class in charge to persist the system properties in data base on bootstrap time. */ public class PropertiesLoaderBootstrapTest implements ServletContextListener { private static Logger log = LoggerFactory.getLogger(PropertiesLoaderBootstrapTest.class); private static final String NAMESPACE = "/SystemConfigurationTest.properties"; /** * {@inheritDoc} */ public void contextDestroyed(ServletContextEvent arg0) { // Do nothing } /** * {@inheritDoc} */ public void contextInitialized(ServletContextEvent event) { WebApplicationContext ctx = WebApplicationContextUtils.getWebApplicationContext(event.getServletContext()); EntityManagerFactory emf = (EntityManagerFactory) ctx.getBean("entityManagerFactory"); PropertiesProvider propertiesProvider = new PropertiesProviderFactoryImpl().createPropertiesProvider(emf); Properties properties = propertiesProvider.load(NAMESPACE); try { log.info("store namespace: " + NAMESPACE); propertiesProvider.store(properties, NAMESPACE); } catch (Exception e) { throw new PaasManagerServerRuntimeException(e); } } }