Java tutorial
/******************************************************************************* * Copyright (c) 2006 - 2011 SJRJ. * * This file is part of SIGA. * * SIGA 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. * * SIGA 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 SIGA. If not, see <http://www.gnu.org/licenses/>. ******************************************************************************/ /* * JBoss, Home of Professional Open Source Copyright 2005, JBoss Inc., and individual contributors as indicated by the @authors tag. See the copyright.txt in the distribution for a full listing of * individual contributors. * * This is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the * License, or (at your option) any later version. * * This software 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public License along with this software; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA * 02110-1301 USA, or see the FSF site: http://www.fsf.org. */ package br.gov.jfrj.siga.wf.servlet; import java.io.IOException; import java.io.InputStream; import java.util.Collection; import java.util.Iterator; import java.util.List; import java.util.zip.ZipInputStream; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.commons.fileupload.FileItem; import org.apache.commons.fileupload.FileUpload; import org.apache.commons.fileupload.FileUploadException; import org.apache.commons.fileupload.disk.DiskFileItemFactory; import org.apache.commons.fileupload.servlet.ServletFileUpload; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.jbpm.JbpmContext; import org.jbpm.graph.def.ProcessDefinition; import org.jbpm.instantiation.Delegation; import org.jbpm.taskmgmt.def.Swimlane; import org.jbpm.taskmgmt.def.Task; import br.gov.jfrj.siga.wf.util.WfContextBuilder; /** * Servlet que recebe um arquivo de definio de processo (Process Definition) e * armazena-o no banco de dados. A definio de processo recebida passa a ser a * definio vigente. * * @author kpf * */ public class UploadServlet extends HttpServlet { private static final long serialVersionUID = 1L; /** * Realiza o tratatemento do request. Verifica se o arquivo enviado uma * definio de processo vlida e realiza o seu deploy. */ public void service(HttpServletRequest request, HttpServletResponse response) throws IOException { response.setContentType("text/html"); System.out.println("Publicando ..."); response.getWriter().println(handleRequest(request)); } /** * Escreve o input stream (para debug) * * @param request * @throws IOException */ public void printInput(HttpServletRequest request) throws IOException { InputStream inputStream = request.getInputStream(); StringBuffer buffer = new StringBuffer(); int read; while ((read = inputStream.read()) != -1) { buffer.append((char) read); } log.debug(buffer.toString()); } /** * Verifica se o arquivo enviado um process definition. Se for, realiza o * seu deploy. * * @param request * @return */ private String handleRequest(HttpServletRequest request) { if (!FileUpload.isMultipartContent(request)) { log.debug("Not a multipart request"); return "Not a multipart request"; } try { // Nato: Modo novo, mas que esta voltando uma lista vazia pois o // webwork est interceptando o request e lendo o arquivo DiskFileItemFactory factory = new DiskFileItemFactory(); // Configure the factory here, if desired. ServletFileUpload upload = new ServletFileUpload(factory); // Configure the uploader here, if desired. List list = upload.parseRequest(request); // Nato: modo antigo // DiskFileUpload fileUpload = new DiskFileUpload(); // List list = fileUpload.parseRequest(request); // MultiPartRequestWrapper req = (MultiPartRequestWrapper)request; // req.get Iterator iterator = list.iterator(); if (!iterator.hasNext()) { log.debug("No process file in the request"); return "No process file in the request"; } FileItem fileItem = (FileItem) iterator.next(); if (fileItem.getContentType().indexOf("application/x-zip-compressed") == -1) { log.debug("Not a process archive"); return "Not a process archive"; } return doDeployment(fileItem); } catch (FileUploadException e) { e.printStackTrace(); return "FileUploadException"; } catch (Exception e) { e.printStackTrace(); throw new Error(e); } } /** * Coloca as informaes do arquivo da definio do processo no banco de * dados. * * @param fileItem * @return */ private String doDeployment(FileItem fileItem) { try { ZipInputStream zipInputStream = new ZipInputStream(fileItem.getInputStream()); JbpmContext jbpmContext = WfContextBuilder.getJbpmContext().getJbpmContext(); ProcessDefinition processDefinition = ProcessDefinition.parseParZipInputStream(zipInputStream); jbpmContext.deployProcessDefinition(processDefinition); zipInputStream.close(); long id = processDefinition.getId(); String sReturn = "Deployed archive " + processDefinition.getName() + " successfully"; // ProcessDefinition pi = jbpmContext.getGraphSession() // .loadProcessDefinition(id); Delegation d = new Delegation("br.gov.jfrj.siga.wf.util.WfAssignmentHandler"); for (Swimlane s : ((Collection<Swimlane>) processDefinition.getTaskMgmtDefinition().getSwimlanes() .values())) { if (s.getTasks() != null) for (Object t : s.getTasks()) { System.out.println(((Task) t).toString()); } if (s.getAssignmentDelegation() == null) s.setAssignmentDelegation(d); } for (Task t : ((Collection<Task>) processDefinition.getTaskMgmtDefinition().getTasks().values())) { if (t.getSwimlane() == null && t.getAssignmentDelegation() == null) t.setAssignmentDelegation(d); } return sReturn; } catch (IOException e) { return "IOException"; } } private static Log log = LogFactory.getLog(UploadServlet.class); }