Hi guys:

when you start developing in Liferay you notice that there are many modules and libraries in its core, but there are not accessible from everywhere.

I recently found a problem developing an improvement for the workflow system (see http://issues.liferay.com/browse/LPS-8821), where I needed to use a class that I couldn't access... and I realized that I needed to know which concrete classes were reachable from where I was. 

I have done a little research and I've written a wiki article explaining this, and I have created a diagram to make it easier to understand:

 

I hope it'll be useful for you, developers!

Regards

 

Juan Fernández

 

[ IMPORTANT UPDATE: This has recently changed for the current Liferay version - 6.0.2. portal-service and portal-kernel have been merged, so that it's much easier now to develop. See 

http://issues.liferay.com/browse/LPS-9370

Despite the US Holiday, we have lots of items in this week's roundup!

• Finalist and Proteon hosted the fist ever Dutch Liferay Community Event on November 23 and it was a huge success. Go check out the Wrap-up and pics!
• The Community Translation Team deserves continued credit and support. One of a great community is the transcendence across culture, language, and geography. Without the continued support of the team, Liferay would not be the leading global open source portal it is today.
• Milan created several wiki pages for Liferay 6.x properties (like this one). While not groundbreaking, it's nice to have an indexed page with all the properties for easy reference. Thanks Milan!
• I'm putting out another call-for-presentations for Liferay Live! Any community member can present on any topic of interest to the wider community. There are slots available on Wednesdays in February, March, and beyond. Let me know if you are interested. Upcoming events include Hudson+Liferay+Selenium (tomorrow, December 1st, 1pm US/Eastern), AlloyUI (December 8), and Staging (December 15).
• If you're in Boston, don't miss Paul Hinz as he discusses Open Source Enterprise Portal's recent resurgence at the Gilbane Conference.
• Gnaniyar posted an excellent and detailed overview of standard IPC mechanisms. Nice!
• From the "I did not know that!" department:You can migrate Wordpress blogs into Liferay.
• Nice community contribution by Boubker:Accessibility Portlets and Theme. The purpose of this project is to provide a set of plugins to enhance the accessibility experience on Liferay portal.
• Lastly, I did a quick search on Liferay on Youtube.  I was surprised at all the relevant hits.  Even though Liferay, Inc. has its own channel, there are many other community-generated videos. Check them out!

I am heading to Liferay's annual retreat this week and part of next week, but will try and keep in touch. Can't wait to meet the many faces of Liferay and talk about our great community!