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.child;
  
  import static java.util.Collections.singletonMap;
  
  import java.util.List;
  import javax.xml.stream.XMLStreamReader;
  import org.activiti.bpmn.converter.util.BpmnXMLUtil;
  import org.activiti.bpmn.model.BaseElement;
  import org.activiti.bpmn.model.BpmnModel;
  import org.activiti.bpmn.model.Event;
  import org.activiti.bpmn.model.ExtensionAttribute;
  import org.activiti.bpmn.model.MessageEventDefinition;
  import org.apache.commons.lang3.StringUtils;
  
  public class MessageEventDefinitionParser extends BaseChildElementParser {
  
      public String getElementName() {
          return ELEMENT_EVENT_MESSAGEDEFINITION;
      }
  
      public void parseChildElement(XMLStreamReader xtr, BaseElement parentElement, BpmnModel model) throws Exception {
          if (!(parentElement instanceof Event)) return;
  
          MessageEventDefinition eventDefinition = new MessageEventDefinition();
          BpmnXMLUtil.addXMLLocation(eventDefinition, xtr);
          eventDefinition.setMessageRef(xtr.getAttributeValue(null, ATTRIBUTE_MESSAGE_REF));
          eventDefinition.setMessageExpression(
              xtr.getAttributeValue(ACTIVITI_EXTENSIONS_NAMESPACE, ATTRIBUTE_MESSAGE_EXPRESSION)
          );
          eventDefinition.setCorrelationKey(
              xtr.getAttributeValue(ACTIVITI_EXTENSIONS_NAMESPACE, ATTRIBUTE_MESSAGE_CORRELATION_KEY)
          );
  
          List<ExtensionAttribute> attributes = parseExtensionAttributes(xtr, parentElement, model);
  
          if (!attributes.isEmpty()) {
              eventDefinition.setAttributes(singletonMap(ACTIVITI_EXTENSIONS_PREFIX, attributes));
          }
  
          if (!StringUtils.isEmpty(eventDefinition.getMessageRef())) {
              int indexOfP = eventDefinition.getMessageRef().indexOf(':');
              if (indexOfP != -1) {
                  String prefix = eventDefinition.getMessageRef().substring(0, indexOfP);
                  String resolvedNamespace = model.getNamespace(prefix);
                  String messageRef = eventDefinition.getMessageRef().substring(indexOfP + 1);
  
                  if (resolvedNamespace == null) {
                      // if it's an invalid prefix will consider this is not a namespace prefix so will be used as part of the stringReference
                      messageRef = prefix + ":" + messageRef;
                  } else if (!resolvedNamespace.equalsIgnoreCase(model.getTargetNamespace())) {
                      // if it's a valid namespace prefix but it's not the targetNamespace then we'll use it as a valid namespace
                      // (even out editor does not support defining namespaces it is still a valid xml file)
                      messageRef = resolvedNamespace + ":" + messageRef;
                  }
                  eventDefinition.setMessageRef(messageRef);
              } else {
                  eventDefinition.setMessageRef(eventDefinition.getMessageRef());
              }
          }
  
          BpmnXMLUtil.parseChildElements(ELEMENT_EVENT_MESSAGEDEFINITION, eventDefinition, xtr, model);
  
          ((Event) parentElement).getEventDefinitions().add(eventDefinition);
      }
  }
  