gerrit.onap Code Review - sdc/sdc-workflow-designer.git/blob

   1 /**
   2  * Copyright (c) 2017 ZTE Corporation.
   3  * All rights reserved. This program and the accompanying materials
   4  * are made available under the Apache License, Version 2.0
   5  * and the Eclipse Public License v1.0 which both accompany this distribution,
   6  * and are available at http://www.eclipse.org/legal/epl-v10.html
   7  * and http://www.apache.org/licenses/LICENSE-2.0
   8  *
   9  * Contributors:
  10  *     ZTE - initial API and implementation and/or initial documentation
  11  */
  12 package org.onap.sdc.workflowdesigner.writer;
  13
  14 import java.io.StringWriter;
  15
  16 import org.apache.velocity.Template;
  17 import org.apache.velocity.VelocityContext;
  18 import org.apache.velocity.app.Velocity;
  19 import org.apache.velocity.app.VelocityEngine;
  20 import org.apache.velocity.exception.ParseErrorException;
  21 import org.apache.velocity.exception.ResourceNotFoundException;
  22 import org.onap.sdc.workflowdesigner.config.Config;
  23 import org.onap.sdc.workflowdesigner.model.Process;
  24 import org.slf4j.Logger;
  25 import org.slf4j.LoggerFactory;
  26
  27 public class BpmnPlanArtefactWriter {
  28
  29     private Process process;
  30
  31     private final static String TEMPLATE_PATH = Config.PROPERTIES.getProperty(Config.TEMPLATE_PATH);
  32
  33     private static Logger log = LoggerFactory.getLogger(BpmnPlanArtefactWriter.class);
  34
  35     public BpmnPlanArtefactWriter(Process process) throws Exception {
  36         this.process = process;
  37         Velocity.init();
  38     }
  39
  40     public String completePlanTemplate() throws ResourceNotFoundException, ParseErrorException, Exception {
  41         log.debug("Completing BPMN process template...");
  42
  43         VelocityContext context = new VelocityContext();
  44
  45         VelocityEngine ve = new VelocityEngine();
  46         ve.setProperty("resource.loader", "class");
  47         ve.setProperty("class.resource.loader.class",
  48                 "org.apache.velocity.runtime.resource.loader.ClasspathResourceLoader");
  49         Template planTemplate = ve.getTemplate(TEMPLATE_PATH + "bpmn_template.xml");
  50
  51         context.put("process", process);
  52         context.put("templatePath", TEMPLATE_PATH);
  53         StringWriter planWriter = new StringWriter();
  54         planTemplate.merge(context, planWriter);
  55
  56         String bpmnProcessContent = planWriter.toString();
  57
  58         log.debug("Completed BPMN process template" + bpmnProcessContent);
  59
  60         return bpmnProcessContent;
  61
  62     }
  63
  64 }