content: /*
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You 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 com.alibaba.compileflow.engine.bpmn.builder.converter.parser;
  
  import com.alibaba.compileflow.engine.bpmn.definition.BpmnModelConstants;
  import com.alibaba.compileflow.engine.bpmn.definition.ExtensionElements;
  import com.alibaba.compileflow.engine.core.builder.converter.parser.model.ParseContext;
  import com.alibaba.compileflow.engine.core.builder.converter.parser.model.XMLSource;
  import com.alibaba.compileflow.engine.core.builder.converter.parser.model.XMLStreamReaderSource;
  import com.alibaba.compileflow.engine.core.definition.Element;
  import com.alibaba.compileflow.engine.core.definition.extension.BaseExtensionElement;
  import com.alibaba.compileflow.engine.core.definition.extension.ExtensionAttribute;
  import com.alibaba.compileflow.engine.core.definition.extension.ExtensionElement;
  
  /**
   * @author wuxiang
   * @author yusu
   */
  public class ExtensionElementsParser extends AbstractBpmnElementParser<ExtensionElements> {
  
      @Override
      protected ExtensionElements doParse(XMLSource xmlSource, ParseContext parseContext) throws Exception {
          ExtensionElements extensionElements = new ExtensionElements();
          if (xmlSource instanceof XMLStreamReaderSource) {
              XMLStreamReaderSource reader = (XMLStreamReaderSource) xmlSource;
              String parentName = BpmnModelConstants.BPMN_ELEMENT_EXTENSION_ELEMENTS;
              for (String child = reader.nextDirectChildElementName(parentName); child != null;
                   child = reader.nextDirectChildElementName(parentName)) {
                  ExtensionElement extensionElement = parseExtensionElement(xmlSource);
                  BaseExtensionElement parentElement = (BaseExtensionElement) parseContext.getParent();
                  parentElement.addExtensionElement(extensionElement);
                  extensionElements.addExtensionElements(extensionElement);
              }
          } else {
              while (!xmlSource.endWith(BpmnModelConstants.BPMN_ELEMENT_EXTENSION_ELEMENTS)) {
                  if (xmlSource.hasNext()) {
                      ExtensionElement extensionElement = parseExtensionElement(xmlSource);
                      BaseExtensionElement parentElement = (BaseExtensionElement) parseContext.getParent();
                      parentElement.addExtensionElement(extensionElement);
                      extensionElements.addExtensionElements(extensionElement);
                  }
              }
          }
          return extensionElements;
      }
  
      @Override
      protected void parseChildElements(XMLSource xmlSource, ExtensionElements element, ParseContext parseContext) {
  
      }
  
      @Override
      protected void attachChildElement(Element childElement, ExtensionElements element, ParseContext parseContext) {
  
      }
  
      private ExtensionElement parseExtensionElement(XMLSource xmlSource) throws Exception {
          ExtensionElement extensionElement = new ExtensionElement();
          extensionElement.setName(xmlSource.getLocalName());
          extensionElement.setNamespaceURI(xmlSource.getNamespaceURI());
          extensionElement.setNamespacePrefix(xmlSource.getPrefix());
  
          for (int i = 0; i < xmlSource.getAttributeCount(); i++) {
              ExtensionAttribute extensionAttribute = new ExtensionAttribute();
              extensionAttribute.setName(xmlSource.getAttributeLocalName(i));
              extensionAttribute.setValue(xmlSource.getAttributeValue(i));
              extensionAttribute.setNamespace(xmlSource.getAttributeNamespace(i));
              extensionAttribute.setNamespacePrefix(xmlSource.getAttributePrefix(i));
              extensionElement.addAttribute(extensionAttribute);
          }
  
          if (xmlSource instanceof XMLStreamReaderSource) {
              XMLStreamReaderSource reader = (XMLStreamReaderSource) xmlSource;
              String currentName = extensionElement.getName();
              for (String child = reader.nextDirectChildElementName(currentName);
                   child != null;
                   child = reader.nextDirectChildElementName(currentName)) {
                  ExtensionElement childExtensionElement = parseExtensionElement(xmlSource);
                  extensionElement.addChildElement(childExtensionElement);
              }
          } else {
              while (xmlSource.hasNext()) {
                  ExtensionElement childExtensionElement = parseExtensionElement(xmlSource);
                  extensionElement.addChildElement(childExtensionElement);
              }
          }
  
          return extensionElement;
      }
  
      @Override
      public String getName() {
          return BpmnModelConstants.BPMN_ELEMENT_EXTENSION_ELEMENTS;
      }
  
  }
  