private void completeLinks(PostsType posts) {
   for (PostType post : posts.getPost()) {
     if (post.getLinks() != null) {
       for (LinkType link : post.getLinks().getLink()) {
         if (!link.getUrl().matches("^http://.*")) {
           link.setUrl(
               "http://"
                   + post.getSource()
                   + link.getUrl().substring(link.getUrl().matches("^/.*") ? 1 : 0));
         }
       }
     }
   }
 }