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.parser;
  
  import javax.xml.stream.XMLStreamReader;
  import org.activiti.bpmn.constants.BpmnXMLConstants;
  import org.activiti.bpmn.converter.util.BpmnXMLUtil;
  import org.activiti.bpmn.model.BpmnModel;
  import org.activiti.bpmn.model.Message;
  import org.apache.commons.lang3.StringUtils;
  
  /**
  
   */
  public class MessageParser implements BpmnXMLConstants {
  
      public void parse(XMLStreamReader xtr, BpmnModel model) throws Exception {
          if (StringUtils.isNotEmpty(xtr.getAttributeValue(null, ATTRIBUTE_ID))) {
              String messageId = xtr.getAttributeValue(null, ATTRIBUTE_ID);
              String messageName = xtr.getAttributeValue(null, ATTRIBUTE_NAME);
              String itemRef = parseItemRef(xtr.getAttributeValue(null, ATTRIBUTE_ITEM_REF), model);
              Message message = new Message(messageId, messageName, itemRef);
              BpmnXMLUtil.addXMLLocation(message, xtr);
              BpmnXMLUtil.parseChildElements(ELEMENT_MESSAGE, message, xtr, model);
              model.addMessage(message);
          }
      }
  
      protected String parseItemRef(String itemRef, BpmnModel model) {
          String result = null;
          if (StringUtils.isNotEmpty(itemRef)) {
              int indexOfP = itemRef.indexOf(':');
              if (indexOfP != -1) {
                  String prefix = itemRef.substring(0, indexOfP);
                  String resolvedNamespace = model.getNamespace(prefix);
                  result = resolvedNamespace + ":" + itemRef.substring(indexOfP + 1);
              } else {
                  String resolvedNamespace = model.getTargetNamespace();
                  result = resolvedNamespace + ":" + itemRef;
              }
          }
          return result;
      }
  }
  