Java tutorial
package org.sigmah.server.util; /* * #%L * Sigmah * %% * Copyright (C) 2010 - 2016 URD * %% * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as * published by the Free Software Foundation, either version 3 of the * License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public * License along with this program. If not, see * <http://www.gnu.org/licenses/gpl-3.0.html>. * #L% */ import com.google.inject.Guice; import com.google.inject.Injector; import com.google.inject.persist.PersistService; import java.util.Arrays; import java.util.HashSet; import javax.persistence.EntityManager; import org.apache.commons.lang3.StringUtils; import org.sigmah.server.dao.ProjectDAO; import org.sigmah.server.domain.Country; import org.sigmah.server.domain.OrgUnit; import org.sigmah.server.domain.Organization; import org.sigmah.server.domain.PhaseModel; import org.sigmah.server.domain.Project; import org.sigmah.server.domain.ProjectModel; import org.sigmah.server.domain.User; import org.sigmah.server.domain.logframe.LogFrameModel; import org.sigmah.server.inject.ConfigurationModule; import org.sigmah.server.inject.I18nServerModule; import org.sigmah.server.inject.MapperModule; import org.sigmah.server.inject.PersistenceModule; import org.sigmah.server.servlet.exporter.models.Realizer; import org.slf4j.Logger; import org.slf4j.LoggerFactory; /** * * @author Mohamed KHADHRAOUI (mohamed.khadhraoui@netapsys.fr) */ public class Loader { /** * Id of project , project should be in database. */ private static Integer projectId = 15472 /*953*/; /** * Count of project to be inserted. */ private static Integer count = 2; private static final Logger LOGGER = LoggerFactory.getLogger(Loader.class); /** * Load one project from data base and duplicate its multiples times for * test. * * @param args */ public static void main(String[] args) { LOGGER.info("Loader project started."); final Injector injector = Guice.createInjector( // Configuration module. new ConfigurationModule(), // Persistence module. new PersistenceModule(), // Mapper module. new MapperModule(), // I18nServer module. new I18nServerModule()); if (args != null) { if (args.length > 0 && StringUtils.isNumeric(args[0])) { projectId = Integer.valueOf(args[0]); } if (args.length > 1 && StringUtils.isNumeric(args[1])) { count = Integer.valueOf(args[1]); } } injector.getInstance(PersistService.class).start(); final EntityManager em = injector.getProvider(EntityManager.class).get(); final ProjectDAO projectDAO = injector.getInstance(ProjectDAO.class); final Project project = projectDAO.findById(projectId); if (project == null) { LOGGER.info("Project not found ."); return; } LOGGER.info("Duplicating project with id: " + project + " for " + count + " times "); em.getTransaction().begin(); try { final Class[] classes = { Organization.class, ProjectModel.class, User.class, OrgUnit.class, Country.class, PhaseModel.class, LogFrameModel.class }; for (int i = 0; i < count; i++) { final Project newProject = Realizer.realize(project, new HashSet<>(Arrays.asList("id")), classes); newProject.setName("gen-" + i); newProject.getId(); em.merge(newProject); } em.getTransaction().commit(); } catch (Exception e) { LOGGER.error("An error occured while duplicating projects.", e); em.getTransaction().rollback(); } finally { injector.getInstance(PersistService.class).stop(); } LOGGER.info("Loader project ended."); } }