Extending a Sitemap

Extending Google Sitemap with Images and Language Versions

XperienCentral exposes three interfaces that make it possible to integrate images and content item language versions into Google Sitemap:

SEOGoogleSitemapFilterProvider
SEOGoogleSitemapImageProvider
SEOGoogleSitemapImageEnrichProvider

The following are examples of how to use each interface. See also the XperienCentral Javadoc for complete information on these interfaces.

SEOGoogleSitemapFilterProvider

This implementation excludes modular content items with a certain property from the sitemap. The rest of the code is a default service component.

public class SitemapRedirectFilterProviderServiceImpl extends SimpleServiceComponent implements SEOGoogleSitemapFilterProvider {
   // Logger for this class
   private static final Logger LOG = Logger.getLogger(SitemapRedirectFilterProviderServiceImpl.class.getName());

   @Override
   public boolean includeInGoogleSitemap(Website website, ContentItemVersion<?> contentItemVersion) {
      if(contentItemVersion instanceof ModularMediaItemVersion) {
         ModularTemplateInstance modularTemplateInstance = ((ModularMediaItemVersion) contentItemVersion).getModularTemplateInstance();
         if(modularTemplateInstance != null) {
            TemplateProperty redirectProperty = modularTemplateInstance.getPropertyByIdentifier("redirect_url");
            if(redirectProperty != null) {
               String redirect = redirectProperty.getStringValue();
               return StringUtils.isEmpty(redirect);
            }
         }
      }

      return true;
   } 
}

SEOGoogleSitemapImageProvider

This implementation adds photos rendered in a media collection element to the sitemap.

public class SitemapImageProviderServiceImpl extends SimpleServiceComponent implements SEOGoogleSitemapImageProvider {
   @Override
   public List<SEOGoogleSitemapImage> getImages(ContentItemVersion<?> contentItemVersion) {
      List<SEOGoogleSitemapImage> images = new ArrayList<>();

      Element[] elements = new Element[0];
      if(contentItemVersion instanceof PageVersion) {
         elements = ((PageVersion) contentItemVersion).getElementHolderElements();
      } else if (contentItemVersion instanceof MediaItemVersion) {
         ElementHolder elementHolder = ((MediaItemVersion) contentItemVersion).getElementHolder();
            if(elementHolder != null) {
               elements = elementHolder.getElements();
            }
      }

      for (Element element : elements) {
         if (element instanceof MediaCollectionElement) {
            images.addAll(getImagesFromMediaCollectionElement((MediaCollectionElement) element));
         }
      }

      return images;
   }

   private List<SEOGoogleSitemapImage> getImagesFromMediaCollectionElement(MediaCollectionElement element) {
      List<SEOGoogleSitemapImage> images = new ArrayList<>();

      Presentation presentation = element.getPresentation();
      if(presentation != null && "mediaCollectionElementPhotoGallery".equals(presentation.getIdentifier())) {
         for(MediaItemVersion mediaItemVersion : element.getMediaItemVersions()) {
            if(mediaItemVersion instanceof ModularMediaItemImageVersion) {
               images.add(createSEOGoogleSitemapImageBean((ModularMediaItemImageVersion) mediaItemVersion));
            }
         }
      }

      return images;
   }

   private SEOGoogleSitemapImage createSEOGoogleSitemapImageBean(ModularMediaItemImageVersion mediaItemVersion) {
      if(mediaItemVersion.getImage() != null) {
         SEOGoogleSitemapImage seoGoogleSitemapImage = createSEOGoogleSitemapImageBean(mediaItemVersion.getImage());
         seoGoogleSitemapImage.setTitle(mediaItemVersion.getTitle());

         ModularTemplateInstance modularTemplateInstance = mediaItemVersion.getModularTemplateInstance();
         if (modularTemplateInstance != null) {
            seoGoogleSitemapImage.setCaption(modularTemplateInstance.getStringValue("caption"));
         }

         return seoGoogleSitemapImage;
     }

     return null;
  }

  private SEOGoogleSitemapImage createSEOGoogleSitemapImageBean(Image image) {
     SEOGoogleSitemapImage seoGoogleSitemapImage = new SEOGoogleSitemapImage();
     seoGoogleSitemapImage.setLoc(image.getAbsoluteUrl());

     return seoGoogleSitemapImage;
  }
}

SEOGoogleSitemapImageEnrichProvider

This implementation adds a custom caption for the sitemap.

public class SitemapImageProviderServiceImpl extends SimpleServiceComponent implements SEOGoogleSitemapImageEnrichProvider {
   @Override
   public SEOGoogleSitemapImage enrichImage(SEOGoogleSitemapImage seoGoogleSitemapImage, ImageElement imageElement) {
      MediaItem mediaItem = imageElement.getMediaItem();
      if(mediaItem != null) {
         MediaItemVersion mediaItemVersion = mediaItem.getCurrent();
            if(mediaItemVersion instanceof ModularMediaItemImageVersion) {
               seoGoogleSitemapImage = createSEOGoogleSitemapImageBean((ModularMediaItemImageVersion) mediaItemVersion);
            }
         }

         return seoGoogleSitemapImage;
   }

   private SEOGoogleSitemapImage createSEOGoogleSitemapImageBean(ModularMediaItemImageVersion mediaItemVersion) {
      if(mediaItemVersion.getImage() != null) {
         SEOGoogleSitemapImage seoGoogleSitemapImage = createSEOGoogleSitemapImageBean(mediaItemVersion.getImage());
         seoGoogleSitemapImage.setTitle(mediaItemVersion.getTitle());

         ModularTemplateInstance modularTemplateInstance = mediaItemVersion.getModularTemplateInstance();
         if (modularTemplateInstance != null) {
            seoGoogleSitemapImage.setCaption(modularTemplateInstance.getStringValue("caption"));
         }

         return seoGoogleSitemapImage;
      }

      return null;
   }

   private SEOGoogleSitemapImage createSEOGoogleSitemapImageBean(Image image) {
      SEOGoogleSitemapImage seoGoogleSitemapImage = new SEOGoogleSitemapImage();
      seoGoogleSitemapImage.setLoc(image.getAbsoluteUrl());

      return seoGoogleSitemapImage;
   }
}

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