Packt Publishing recently published a book on JBoss Portal; the book, titled JBoss Portal Server Development, is written by Ramanujam Rao - a JavaEE architect who currently works for Nationwide. Packt sent me a copy and asked that I write a review of the book, which I plan on doing in the next few weeks.
Until then, Packt has made available a sample chapter of the book - JBoss Portal Server Development, Chapter 6: Portals and AJAX (download the sample chapter at: http://www.packtpub.com/files/jboss-portal-server-development-sample-cha...).
In the sample chapter, Rao discusses the basics of AJAX in the Portal environment, describing the enhancements for asynchronous communication JSR286 brings to the table. He also provides some basic code examples implementing a portlet with AJAX functionality, in addition to describing JBoss Portal’s out of the box AJAX support (drag and drop, partial page refreshing, etc.).
I’m excited about the book, because I think it’s one of the first on JBoss Portal, which speaks to the products coming maturity and will give it some clout to compete with the other portal vendors. I’m sure the folks at JBoss Mass would agree.
At first glance, the book appears to be a solid companion to the jboss.org documentation, adding an additional level of architectural guidance; it’s a great addition to the bookshelf if you’ll be working with JBoss Portal.
I’ve always been an open source fan and for the past 2 or 3 years I’ve been working with JBoss products - lately JBoss Portal. So, I decided I want to become more active in the JBoss Portal forums on JBoss.com - unfortunately, though, their forums aren’t RSS-enabled and I’m a big RSS user.
So, I decided to use one of my favorite, free web-tools - Yahoo Pipes - to build an RSS feed for the JBoss.com forums.
In short, the pipe does the following:
- uses a URL Builder object to “scrape” the jboss.com forum site
- passes in a parameter of the forum ID to read (ie: 215 for the Portal User’s forum, 205 for the Portal design forum)
- uses regular expressions to slice and dice the fetched page into an aggregated RSS feed
Because the forum ID is a parameter, you can add any JBoss.com forum to your RSS client of choice. The feed results aren’t perfect (eg: doesn’t get the original post date right), but it does the trick for my needs.
So check out the JBoss.com Forum Feeds Pipe at: http://pipes.yahoo.com/pembertonandy/jbossforums
Feel free to clone the pipe and use it to your liking; the same technique can be used on any publicly available site. Let me know if you like it!
Before the Portlet 2 specification (JSR286), the recommended method for adding AJAX functionality to a JSR168 portlet was to deploy an additional servlet to the portal server (either inside the same WAR as your portlet(s) or in a stand-alone WAR) to handle asynchronous requests. Requests to these servlets are then handled by the servlet container as opposed to being routed through the portlet container, so they don’t automatically inherit the security context from the portal, as your portlets would.
The goal of this article is to describe how to enable security in your AJAX servlets in JBoss Portal 2.6.
JBoss Portal 2.7 supports JSR286, which has features built into portlets for serving AJAX requests. So while this technique may be less useful in that environment, nothing precludes the use of AJAX servlets in the 286 environment, so this technique may still come in handy.
The goal of this article is to show you how to use pack:tag to optimize the performance of your JBoss Portal theme. I’ve used this approach on a production JBoss Portal 2.6 implementation and tested the approach out in version 2.7.