protected String getUniqueFriendlyURL(
      PortletDataContext portletDataContext, Layout existingLayout, String friendlyURL) {

    for (int i = 1; ; i++) {
      Layout duplicateFriendlyURLLayout =
          _layoutLocalService.fetchLayoutByFriendlyURL(
              portletDataContext.getGroupId(), portletDataContext.isPrivateLayout(), friendlyURL);

      if ((duplicateFriendlyURLLayout == null)
          || (duplicateFriendlyURLLayout.getPlid() == existingLayout.getPlid())) {

        break;
      }

      friendlyURL = friendlyURL + i;
    }

    return friendlyURL;
  }
  @Override
  protected void doImportStagedModel(PortletDataContext portletDataContext, Layout layout)
      throws Exception {

    long groupId = portletDataContext.getGroupId();
    long userId = portletDataContext.getUserId(layout.getUserUuid());

    Element layoutElement = portletDataContext.getImportDataStagedModelElement(layout);

    String layoutUuid = GetterUtil.getString(layoutElement.attributeValue("layout-uuid"));

    long layoutId = GetterUtil.getInteger(layoutElement.attributeValue("layout-id"));

    long oldLayoutId = layoutId;

    boolean privateLayout = portletDataContext.isPrivateLayout();

    String action = layoutElement.attributeValue(Constants.ACTION);

    if (action.equals(Constants.DELETE)) {
      Layout deletingLayout =
          _layoutLocalService.fetchLayoutByUuidAndGroupId(layoutUuid, groupId, privateLayout);

      _layoutLocalService.deleteLayout(
          deletingLayout, false, ServiceContextThreadLocal.getServiceContext());

      return;
    }

    Map<Long, Layout> layouts =
        (Map<Long, Layout>) portletDataContext.getNewPrimaryKeysMap(Layout.class + ".layout");

    Layout existingLayout = null;
    Layout importedLayout = null;

    String friendlyURL = layout.getFriendlyURL();

    String layoutsImportMode =
        MapUtil.getString(
            portletDataContext.getParameterMap(),
            PortletDataHandlerKeys.LAYOUTS_IMPORT_MODE,
            PortletDataHandlerKeys.LAYOUTS_IMPORT_MODE_MERGE_BY_LAYOUT_UUID);

    if (layoutsImportMode.equals(PortletDataHandlerKeys.LAYOUTS_IMPORT_MODE_ADD_AS_NEW)) {

      layoutId = _layoutLocalService.getNextLayoutId(groupId, privateLayout);
      friendlyURL = StringPool.SLASH + layoutId;
    } else if (layoutsImportMode.equals(
        PortletDataHandlerKeys.LAYOUTS_IMPORT_MODE_MERGE_BY_LAYOUT_NAME)) {

      Locale locale = LocaleUtil.getSiteDefault();

      String localizedName = layout.getName(locale);

      List<Layout> previousLayouts = _layoutLocalService.getLayouts(groupId, privateLayout);

      for (Layout curLayout : previousLayouts) {
        if (localizedName.equals(curLayout.getName(locale))
            || friendlyURL.equals(curLayout.getFriendlyURL())) {

          existingLayout = curLayout;

          break;
        }
      }

      if (existingLayout == null) {
        layoutId = _layoutLocalService.getNextLayoutId(groupId, privateLayout);

        friendlyURL = getFriendlyURL(friendlyURL, layoutId);
      }
    } else if (layoutsImportMode.equals(
        PortletDataHandlerKeys.LAYOUTS_IMPORT_MODE_CREATED_FROM_PROTOTYPE)) {

      existingLayout =
          _layoutLocalService.fetchLayoutByUuidAndGroupId(layout.getUuid(), groupId, privateLayout);

      if (SitesUtil.isLayoutModifiedSinceLastMerge(existingLayout)) {
        layouts.put(oldLayoutId, existingLayout);

        return;
      }

      LayoutFriendlyURL layoutFriendlyURL =
          _layoutFriendlyURLLocalService.fetchFirstLayoutFriendlyURL(
              groupId, privateLayout, friendlyURL);

      if ((layoutFriendlyURL != null) && (existingLayout == null)) {
        Layout mergeFailFriendlyURLLayout =
            _layoutLocalService.getLayout(layoutFriendlyURL.getPlid());

        SitesUtil.addMergeFailFriendlyURLLayout(mergeFailFriendlyURLLayout);

        if (!_log.isWarnEnabled()) {
          return;
        }

        StringBundler sb = new StringBundler(6);

        sb.append("Layout with layout ID ");
        sb.append(layout.getLayoutId());
        sb.append(" cannot be propagated because the friendly URL ");
        sb.append("conflicts with the friendly URL of layout with ");
        sb.append("layout ID ");
        sb.append(mergeFailFriendlyURLLayout.getLayoutId());

        _log.warn(sb.toString());

        return;
      }
    } else {

      // The default behavior of import mode is
      // PortletDataHandlerKeys.LAYOUTS_IMPORT_MODE_MERGE_BY_LAYOUT_UUID

      existingLayout =
          _layoutLocalService.fetchLayoutByUuidAndGroupId(layout.getUuid(), groupId, privateLayout);

      if (existingLayout == null) {
        existingLayout =
            _layoutLocalService.fetchLayoutByFriendlyURL(groupId, privateLayout, friendlyURL);
      }

      if (existingLayout == null) {
        layoutId = _layoutLocalService.getNextLayoutId(groupId, privateLayout);

        friendlyURL = getFriendlyURL(friendlyURL, layoutId);
      }
    }

    if (_log.isDebugEnabled()) {
      StringBundler sb = new StringBundler(7);

      sb.append("Layout with {groupId=");
      sb.append(groupId);
      sb.append(",privateLayout=");
      sb.append(privateLayout);
      sb.append(",layoutId=");
      sb.append(layoutId);

      if (existingLayout == null) {
        sb.append("} does not exist");

        _log.debug(sb.toString());
      } else {
        sb.append("} exists");

        _log.debug(sb.toString());
      }
    }

    if (existingLayout == null) {
      long plid = _counterLocalService.increment();

      importedLayout = _layoutLocalService.createLayout(plid);

      if (layoutsImportMode.equals(
          PortletDataHandlerKeys.LAYOUTS_IMPORT_MODE_CREATED_FROM_PROTOTYPE)) {

        importedLayout.setSourcePrototypeLayoutUuid(layout.getUuid());

        layoutId = _layoutLocalService.getNextLayoutId(groupId, privateLayout);

        friendlyURL = getFriendlyURL(friendlyURL, layoutId);
      } else {
        importedLayout.setCreateDate(layout.getCreateDate());
        importedLayout.setModifiedDate(layout.getModifiedDate());
        importedLayout.setLayoutPrototypeUuid(layout.getLayoutPrototypeUuid());
        importedLayout.setLayoutPrototypeLinkEnabled(layout.isLayoutPrototypeLinkEnabled());
        importedLayout.setSourcePrototypeLayoutUuid(layout.getSourcePrototypeLayoutUuid());
      }

      importedLayout.setUuid(layout.getUuid());
      importedLayout.setGroupId(groupId);
      importedLayout.setUserId(userId);
      importedLayout.setPrivateLayout(privateLayout);
      importedLayout.setLayoutId(layoutId);

      initNewLayoutPermissions(
          portletDataContext.getCompanyId(),
          groupId,
          userId,
          layout,
          importedLayout,
          privateLayout);

      LayoutSet layoutSet = _layoutSetLocalService.getLayoutSet(groupId, privateLayout);

      importedLayout.setLayoutSet(layoutSet);
    } else {
      importedLayout = existingLayout;
    }

    portletDataContext.setPlid(importedLayout.getPlid());
    portletDataContext.setOldPlid(layout.getPlid());

    long parentLayoutId = layout.getParentLayoutId();

    String parentLayoutUuid =
        GetterUtil.getString(layoutElement.attributeValue("parent-layout-uuid"));

    Element parentLayoutElement =
        portletDataContext.getReferenceDataElement(
            layout, Layout.class, layout.getGroupId(), parentLayoutUuid);

    if ((parentLayoutId != LayoutConstants.DEFAULT_PARENT_LAYOUT_ID)
        && (parentLayoutElement != null)) {

      StagedModelDataHandlerUtil.importStagedModel(portletDataContext, parentLayoutElement);

      Layout importedParentLayout = layouts.get(parentLayoutId);

      parentLayoutId = importedParentLayout.getLayoutId();
    }

    if (_log.isDebugEnabled()) {
      StringBundler sb = new StringBundler(4);

      sb.append("Importing layout with layout id ");
      sb.append(layoutId);
      sb.append(" and parent layout id ");
      sb.append(parentLayoutId);

      _log.debug(sb.toString());
    }

    importedLayout.setCompanyId(portletDataContext.getCompanyId());

    if (layout.getLayoutPrototypeUuid() != null) {
      importedLayout.setModifiedDate(new Date());
    }

    importedLayout.setParentLayoutId(parentLayoutId);
    importedLayout.setName(layout.getName());
    importedLayout.setTitle(layout.getTitle());
    importedLayout.setDescription(layout.getDescription());
    importedLayout.setKeywords(layout.getKeywords());
    importedLayout.setRobots(layout.getRobots());
    importedLayout.setType(layout.getType());

    String portletsMergeMode =
        MapUtil.getString(
            portletDataContext.getParameterMap(),
            PortletDataHandlerKeys.PORTLETS_MERGE_MODE,
            PortletDataHandlerKeys.PORTLETS_MERGE_MODE_REPLACE);

    if (layout.isTypePortlet()
        && Validator.isNotNull(layout.getTypeSettings())
        && !portletsMergeMode.equals(PortletDataHandlerKeys.PORTLETS_MERGE_MODE_REPLACE)) {

      mergePortlets(importedLayout, layout.getTypeSettings(), portletsMergeMode);
    } else if (layout.isTypeLinkToLayout()) {
      importLinkedLayout(portletDataContext, layout, importedLayout, layoutElement, layouts);
    } else {
      updateTypeSettings(importedLayout, layout);
    }

    importedLayout.setHidden(layout.isHidden());
    importedLayout.setFriendlyURL(
        getUniqueFriendlyURL(portletDataContext, importedLayout, friendlyURL));

    if (layout.getIconImageId() > 0) {
      importLayoutIconImage(portletDataContext, importedLayout, layoutElement);
    } else if (importedLayout.getIconImageId() > 0) {
      _imageLocalService.deleteImage(importedLayout.getIconImageId());
    }

    if (existingLayout == null) {
      int priority =
          _layoutLocalServiceHelper.getNextPriority(
              groupId, privateLayout, parentLayoutId, null, -1);

      importedLayout.setPriority(priority);
    }

    importedLayout.setLayoutPrototypeUuid(layout.getLayoutPrototypeUuid());
    importedLayout.setLayoutPrototypeLinkEnabled(layout.isLayoutPrototypeLinkEnabled());

    ServiceContext serviceContext = portletDataContext.createServiceContext(layout);

    importedLayout.setExpandoBridgeAttributes(serviceContext);

    StagingUtil.updateLastImportSettings(layoutElement, importedLayout, portletDataContext);

    fixImportTypeSettings(importedLayout);

    importTheme(portletDataContext, layout, importedLayout);

    _layoutLocalService.updateLayout(importedLayout);

    _layoutSetLocalService.updatePageCount(groupId, privateLayout);

    Map<Long, Long> layoutPlids =
        (Map<Long, Long>) portletDataContext.getNewPrimaryKeysMap(Layout.class);

    layoutPlids.put(layout.getPlid(), importedLayout.getPlid());

    layouts.put(oldLayoutId, importedLayout);

    importAssets(portletDataContext, layout, importedLayout);

    importLayoutFriendlyURLs(portletDataContext, layout, importedLayout);

    portletDataContext.importClassedModel(layout, importedLayout);
  }