Feeds integration

Feeds integration

Possible solutions

• Google AJAX Feed API

Google AJAX API

Cons/Pros

Pros:

• Very simple to implement and to reuse.

Cons:

• Google Terms of use : [1]

How to

To use the Google AJAX API please copy the following code on the jsp page:

<script src="http://www.google.com/jsapi">&#160;</script> 
<script>
  google.load("feeds", "1");
  function facesBlogInitialize() 
  {  	
      var feedControl = new google.feeds.FeedControl();
      feedControl.addFeed("http://url/of/the/feed/", "Feed name");
      feedControl.setNumEntries(6);
      feedControl.draw(document.getElementById("feedControl"));
  }
  google.setOnLoadCallback(facesBlogInitialize);
</script>

Remarks:

• The first script element should not be minimized. To avoid the auto-minimization from JSF please write like it is on the previous code.
• The url of the feed should be access from a backing bean with either

<h:outputText value="#{MyBackingBean.feedUrl}"/>

or replace the url with

document.getElementById("rssFeedUrl").value

and add in your jsp

 <h:inputHidden id="rssFeedUrl" value="#{BlogBean.rssFeedUrl}"></h:inputHidden>

• The Google AJAX Feed API might be used with a Google AJAX key [2]. This key is defined for one server (that means one key is needed for dev, qa, demo, live, ..., servers). The usefulness of that key is described here [3]. If you want to use it, add it as parameter in the url source of the first script

 <script src="http://www.google.com/jsapi?key=your-key">&#160;</script> 

• You can easily add additional feeds to your feedControl:

 feedControl.addFeed("http://url/of/second/feed/", "Second Feed name");
 feedControl.addFeed("http://url/of/third/feed/", "ThirdFeed name");
 ...

More

• Documentation of the API
• Documentation for the feedControl

Application Programming Interface

JavaServer Faces