public void traverse()

in impl/src/main/java/org/apache/tuscany/sdo/util/DataGraphResourceFactoryImpl.java [301:413]
103 lines of code
21 McCabe index (conditional complexity)

      public void traverse(List contents)
      {
        if (contents.size() >= 1 && contents.get(0) instanceof DataGraphImpl)
        {
          eDataGraph = (DataGraphImpl)contents.get(0);
                   
          Object datagraphMark = null;
          if (!toDOM)
          {
            if (declareXML)
            {
              doc.add("<?xml version=\"" + xmlVersion + "\" encoding=\"" + encoding + "\"?>");
              doc.addLine();
            }
            String elementName = helper.getQName(eDataGraph.eClass());
            doc.startElement(elementName);
            datagraphMark = doc.mark();
          }
          else
          {
            helper.populateNameInfo(nameInfo, eDataGraph.eClass());
            currentNode = document.createElementNS(nameInfo.getNamespaceURI(), nameInfo.getQualifiedName());
            document.appendChild(currentNode);
            // not calling handler since there is no corresponding EObject
          }

          if (eDataGraph.eResource() != null && eDataGraph.eResource().getResourceSet() != null)
          {
            List ePackages = new ArrayList();
            for (Iterator i = eDataGraph.eResource().getResourceSet().getResources().iterator(); i.hasNext();)
            {
              List resourceContents = ((Resource)i.next()).getContents();
              if (resourceContents.size() == 1 && resourceContents.get(0) instanceof EPackage)
              {
                ePackages.add(resourceContents.get(0));
              }
            }
            if (!ePackages.isEmpty())
            {
              if (!toDOM)
              {
                doc.startElement("models");
                doc.addAttribute("xmlns", "");
              }
              else
              {
                currentNode = currentNode.appendChild(document.createElementNS(null, "models"));
                ((Element)currentNode).setAttributeNS(ExtendedMetaData.XMLNS_URI, ExtendedMetaData.XMLNS_PREFIX, "");
                //  not calling handler since there is no corresponding EObject
              }
              for (Iterator i = ePackages.iterator(); i.hasNext();)
              {
                writeTopObject((EPackage)i.next());
              }
              if (!toDOM)
              {
                doc.endElement();
              }
              else
              {
                currentNode = currentNode.getParentNode();
              }
            }
          }

          // use namespace declarations defined in the document (if any)
          EObject eRootObject = eDataGraph.getERootObject();
          EReference xmlnsPrefixMapFeature = extendedMetaData.getXMLNSPrefixMapFeature(eRootObject.eClass());
          if (xmlnsPrefixMapFeature != null)
          {
            EMap xmlnsPrefixMap = (EMap)eRootObject.eGet(xmlnsPrefixMapFeature);
            helper.setPrefixToNamespaceMap(xmlnsPrefixMap);
          }
          ChangeSummary changeSummary = eDataGraph.getEChangeSummary();

          if (changeSummary != null)
          {
            helper.setMustHavePrefix(true);
            if (changeSummary.isLogging())
            {
              ((ChangeSummaryImpl)changeSummary).summarize();
              writeTopObject((EObject)changeSummary);
            }
            else
            {
              writeTopObject((EObject)changeSummary);
            }
            helper.setMustHavePrefix(false);
          }

          if (eRootObject != null && writeTopObject(eRootObject) == null && !toDOM)
          {
            doc.addLine();
            doc.setMixed(false);
          }
          if (!toDOM)
          {
            doc.endElement();
            // reset to add namespace declarations
            //
            doc.resetToMark(datagraphMark);
          }
          else
          {
            currentNode = document.getFirstChild();
          }
          addNamespaceDeclarations();
        }
        else
        {
          super.traverse(contents);
        }
      }