RSS and Atom

Both AbstractAtomFeedView and AbstractRssFeedView inherit from the AbstractFeedView base class and are used to provide Atom and RSS Feed views, respectively. They are based on ROME project and are located in the package cn.taketoday.web.view.feed.

AbstractAtomFeedView requires you to implement the buildFeedEntries() method and optionally override the buildFeedMetadata() method (the default implementation is empty). The following example shows how to do so:

Java

public class SampleContentAtomView extends AbstractAtomFeedView {

  @Override
  protected void buildFeedMetadata(Map<String, Object> model,
      Feed feed, HttpServletRequest request) {
    // implementation omitted
  }

  @Override
  protected List<Entry> buildFeedEntries(Map<String, Object> model,
      HttpServletRequest request, HttpServletResponse response) throws Exception {
    // implementation omitted
  }
}

Similar requirements apply for implementing AbstractRssFeedView, as the following example shows:

Java

public class SampleContentRssView extends AbstractRssFeedView {

  @Override
  protected void buildFeedMetadata(Map<String, Object> model,
      Channel feed, HttpServletRequest request) {
    // implementation omitted
  }

  @Override
  protected List<Item> buildFeedItems(Map<String, Object> model,
      HttpServletRequest request, HttpServletResponse response) throws Exception {
    // implementation omitted
  }
}

The buildFeedItems() and buildFeedEntries() methods pass in the HTTP request, in case you need to access the Locale. The HTTP response is passed in only for the setting of cookies or other HTTP headers. The feed is automatically written to the response object after the method returns.

For an example of creating an Atom view, see Alef Arendsen’s Infra Team Blog entry.