Java tutorial
/** * Licensed to Apereo under one or more contributor license * agreements. See the NOTICE file distributed with this work * for additional information regarding copyright ownership. * Apereo 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 the following location: * * 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.jasig.portlet.announcements; import java.io.File; import java.io.FileOutputStream; import java.util.List; import java.util.UUID; import javax.xml.bind.JAXBContext; import javax.xml.bind.JAXBElement; import javax.xml.bind.Marshaller; import javax.xml.namespace.QName; import org.hibernate.LockMode; import org.hibernate.SessionFactory; import org.hibernate.Transaction; import org.hibernate.classic.Session; import org.jasig.portlet.announcements.model.Topic; import org.jasig.portlet.announcements.service.IAnnouncementService; import org.jasig.portlet.announcements.spring.PortletApplicationContextLocator; import org.springframework.context.ApplicationContext; public class Exporter { private static final String SESSION_FACTORY_BEAN_NAME = "sessionFactory"; private static final String ANNOUNCEMENT_SVC_BEAN_NAME = "announcementService"; public static void main(String[] args) throws Exception { String dir = args[0]; ApplicationContext context = PortletApplicationContextLocator .getApplicationContext(PortletApplicationContextLocator.DATABASE_CONTEXT_LOCATION); SessionFactory sessionFactory = context.getBean(SESSION_FACTORY_BEAN_NAME, SessionFactory.class); IAnnouncementService announcementService = context.getBean(ANNOUNCEMENT_SVC_BEAN_NAME, IAnnouncementService.class); Session session = sessionFactory.getCurrentSession(); Transaction transaction = session.beginTransaction(); JAXBContext jc = JAXBContext.newInstance(Topic.class); Marshaller marshaller = jc.createMarshaller(); marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true); List<Topic> topics = announcementService.getAllTopics(); for (Topic topic : topics) { if (topic.getSubscriptionMethod() == 4) { continue; } session.lock(topic, LockMode.NONE); JAXBElement<Topic> je2 = new JAXBElement<Topic>(new QName("topic"), Topic.class, topic); String output = dir + File.separator + UUID.randomUUID().toString() + ".xml"; System.out.println("Exporting Topic " + topic.getId() + " to file " + output); try { marshaller.marshal(je2, new FileOutputStream(output)); } catch (Exception exception) { exception.printStackTrace(); } } transaction.commit(); } }