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 javax.xml.stream.XMLStreamReader;
  import org.activiti.bpmn.converter.util.BpmnXMLUtil;
  import org.activiti.bpmn.model.ActivitiListener;
  import org.activiti.bpmn.model.BaseElement;
  import org.activiti.bpmn.model.BpmnModel;
  import org.activiti.bpmn.model.FieldExtension;
  import org.activiti.bpmn.model.MessageEventDefinition;
  import org.activiti.bpmn.model.SendTask;
  import org.activiti.bpmn.model.ServiceTask;
  import org.apache.commons.lang3.StringUtils;
  
  /**
  
   */
  public class FieldExtensionParser extends BaseChildElementParser {
  
      public String getElementName() {
          return ELEMENT_FIELD;
      }
  
      public boolean accepts(BaseElement element) {
          return (
              (element instanceof ActivitiListener) ||
              (element instanceof ServiceTask) ||
              (element instanceof SendTask) ||
              (element instanceof MessageEventDefinition)
          );
      }
  
      public void parseChildElement(XMLStreamReader xtr, BaseElement parentElement, BpmnModel model) throws Exception {
          if (!accepts(parentElement)) return;
  
          FieldExtension extension = new FieldExtension();
          BpmnXMLUtil.addXMLLocation(extension, xtr);
          extension.setFieldName(xtr.getAttributeValue(null, ATTRIBUTE_FIELD_NAME));
  
          if (StringUtils.isNotEmpty(xtr.getAttributeValue(null, ATTRIBUTE_FIELD_STRING))) {
              extension.setStringValue(xtr.getAttributeValue(null, ATTRIBUTE_FIELD_STRING));
          } else if (StringUtils.isNotEmpty(xtr.getAttributeValue(null, ATTRIBUTE_FIELD_EXPRESSION))) {
              extension.setExpression(xtr.getAttributeValue(null, ATTRIBUTE_FIELD_EXPRESSION));
          } else {
              boolean readyWithFieldExtension = false;
              try {
                  while (readyWithFieldExtension == false && xtr.hasNext()) {
                      xtr.next();
                      if (xtr.isStartElement() && ELEMENT_FIELD_STRING.equalsIgnoreCase(xtr.getLocalName())) {
                          extension.setStringValue(xtr.getElementText().trim());
                      } else if (
                          xtr.isStartElement() && ATTRIBUTE_FIELD_EXPRESSION.equalsIgnoreCase(xtr.getLocalName())
                      ) {
                          extension.setExpression(xtr.getElementText().trim());
                      } else if (xtr.isEndElement() && getElementName().equalsIgnoreCase(xtr.getLocalName())) {
                          readyWithFieldExtension = true;
                      }
                  }
              } catch (Exception e) {
                  LOGGER.warn("Error parsing field extension child elements", e);
              }
          }
  
          if (parentElement instanceof ActivitiListener) {
              ((ActivitiListener) parentElement).getFieldExtensions().add(extension);
          } else if (parentElement instanceof ServiceTask) {
              ((ServiceTask) parentElement).getFieldExtensions().add(extension);
          } else if (parentElement instanceof SendTask) {
              ((SendTask) parentElement).getFieldExtensions().add(extension);
          } else if (parentElement instanceof MessageEventDefinition) {
              ((MessageEventDefinition) parentElement).getFieldExtensions().add(extension);
          }
      }
  }
  