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.constants.BpmnXMLConstants;
  import org.activiti.bpmn.converter.util.BpmnXMLUtil;
  import org.activiti.bpmn.model.Assignment;
  import org.activiti.bpmn.model.DataAssociation;
  import org.apache.commons.lang3.StringUtils;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  public class DataAssociationParser implements BpmnXMLConstants {
  
      protected static final Logger LOGGER = LoggerFactory.getLogger(DataAssociationParser.class.getName());
  
      public static void parseDataAssociation(DataAssociation dataAssociation, String elementName, XMLStreamReader xtr) {
          boolean readyWithDataAssociation = false;
          Assignment assignment = null;
          try {
              dataAssociation.setId(xtr.getAttributeValue(null, "id"));
  
              while (!readyWithDataAssociation && xtr.hasNext()) {
                  xtr.next();
                  if (xtr.isStartElement() && ELEMENT_SOURCE_REF.equals(xtr.getLocalName())) {
                      String sourceRef = xtr.getElementText();
                      if (StringUtils.isNotEmpty(sourceRef)) {
                          dataAssociation.setSourceRef(sourceRef.trim());
                      }
                  } else if (xtr.isStartElement() && ELEMENT_TARGET_REF.equals(xtr.getLocalName())) {
                      String targetRef = xtr.getElementText();
                      if (StringUtils.isNotEmpty(targetRef)) {
                          dataAssociation.setTargetRef(targetRef.trim());
                      }
                  } else if (xtr.isStartElement() && ELEMENT_TRANSFORMATION.equals(xtr.getLocalName())) {
                      String transformation = xtr.getElementText();
                      if (StringUtils.isNotEmpty(transformation)) {
                          dataAssociation.setTransformation(transformation.trim());
                      }
                  } else if (xtr.isStartElement() && ELEMENT_ASSIGNMENT.equals(xtr.getLocalName())) {
                      assignment = new Assignment();
                      BpmnXMLUtil.addXMLLocation(assignment, xtr);
                  } else if (xtr.isStartElement() && ELEMENT_FROM.equals(xtr.getLocalName())) {
                      String from = xtr.getElementText();
                      if (assignment != null && StringUtils.isNotEmpty(from)) {
                          assignment.setFrom(from.trim());
                      }
                  } else if (xtr.isStartElement() && ELEMENT_TO.equals(xtr.getLocalName())) {
                      String to = xtr.getElementText();
                      if (assignment != null && StringUtils.isNotEmpty(to)) {
                          assignment.setTo(to.trim());
                      }
                  } else if (xtr.isEndElement() && ELEMENT_ASSIGNMENT.equals(xtr.getLocalName())) {
                      if (StringUtils.isNotEmpty(assignment.getFrom()) && StringUtils.isNotEmpty(assignment.getTo())) {
                          dataAssociation.getAssignments().add(assignment);
                      }
                  } else if (xtr.isEndElement() && elementName.equals(xtr.getLocalName())) {
                      readyWithDataAssociation = true;
                  }
              }
          } catch (Exception e) {
              LOGGER.warn("Error parsing data association child elements", e);
          }
      }
  }
  