content: /*
   * Copyright 2010-2025 Hyland Software, Inc. and its affiliates.
   *
   * Licensed 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
   *
   *     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.activiti.bpmn.converter.export;
  
  import static java.util.Arrays.asList;
  
  import java.util.List;
  import javax.xml.stream.XMLStreamWriter;
  import org.activiti.bpmn.constants.BpmnXMLConstants;
  import org.activiti.bpmn.converter.util.BpmnXMLUtil;
  import org.activiti.bpmn.model.ExtensionAttribute;
  import org.activiti.bpmn.model.Process;
  import org.apache.commons.lang3.StringUtils;
  
  public class ProcessExport implements BpmnXMLConstants {
  
      /**
       * default attributes taken from process instance attributes
       */
      public static final List<ExtensionAttribute> defaultProcessAttributes = asList(
          new ExtensionAttribute(ATTRIBUTE_ID),
          new ExtensionAttribute(ATTRIBUTE_NAME),
          new ExtensionAttribute(ATTRIBUTE_PROCESS_EXECUTABLE),
          new ExtensionAttribute(ACTIVITI_EXTENSIONS_NAMESPACE, ATTRIBUTE_PROCESS_CANDIDATE_USERS),
          new ExtensionAttribute(ACTIVITI_EXTENSIONS_NAMESPACE, ATTRIBUTE_PROCESS_CANDIDATE_GROUPS)
      );
  
      @SuppressWarnings("unchecked")
      public static void writeProcess(Process process, XMLStreamWriter xtw) throws Exception {
          // start process element
          xtw.writeStartElement(BPMN2_PREFIX, ELEMENT_PROCESS, BPMN2_NAMESPACE);
          xtw.writeAttribute(ATTRIBUTE_ID, process.getId());
  
          if (StringUtils.isNotEmpty(process.getName())) {
              xtw.writeAttribute(ATTRIBUTE_NAME, process.getName());
          }
  
          xtw.writeAttribute(ATTRIBUTE_PROCESS_EXECUTABLE, Boolean.toString(process.isExecutable()));
  
          if (!process.getCandidateStarterUsers().isEmpty()) {
              xtw.writeAttribute(
                  ACTIVITI_EXTENSIONS_PREFIX,
                  ACTIVITI_EXTENSIONS_NAMESPACE,
                  ATTRIBUTE_PROCESS_CANDIDATE_USERS,
                  BpmnXMLUtil.convertToDelimitedString(process.getCandidateStarterUsers())
              );
          }
  
          if (!process.getCandidateStarterGroups().isEmpty()) {
              xtw.writeAttribute(
                  ACTIVITI_EXTENSIONS_PREFIX,
                  ACTIVITI_EXTENSIONS_NAMESPACE,
                  ATTRIBUTE_PROCESS_CANDIDATE_GROUPS,
                  BpmnXMLUtil.convertToDelimitedString(process.getCandidateStarterGroups())
              );
          }
  
          // write custom attributes
          BpmnXMLUtil.writeCustomAttributes(process.getAttributes().values(), xtw, defaultProcessAttributes);
  
          if (StringUtils.isNotEmpty(process.getDocumentation())) {
              xtw.writeStartElement(BPMN2_PREFIX, ELEMENT_DOCUMENTATION, BPMN2_NAMESPACE);
              xtw.writeCharacters(process.getDocumentation());
              xtw.writeEndElement();
          }
  
          boolean didWriteExtensionStartElement = ActivitiListenerExport.writeListeners(process, false, xtw);
          didWriteExtensionStartElement = BpmnXMLUtil.writeExtensionElements(process, didWriteExtensionStartElement, xtw);
  
          if (didWriteExtensionStartElement) {
              // closing extensions element
              xtw.writeEndElement();
          }
  
          LaneExport.writeLanes(process, xtw);
      }
  }
  