Liferay

MPDL,GAVO

Liferay functionalities

 * Liferay portal
 * Liferay CMS and WCM
 * Liferay collaboration: blogs, calendar, web mail, message boards, polls, RSS feeds, Wiki, presence (AJAX chat client, dynamic friend list, activity wall, and activity tracker), alerts and announcements, and so on
 * Liferay Social Offce

You can read more about Liferay Portal here

Installation

 * Liferay IDE Installation Guide
 * Liferay IDE Getting Started Tutorial

Liferay@MPDL
http://vm39.mpdl.mpg.de:8081/

or

http://134.76.28.201:8081/

components and technologies used by Liferay

 * Java J2EE/JEE
 * Hibernate
 * Spring
 * Struts
 * Lucene
 * Seam
 * ICEfaces
 * jQuery
 * Velocity
 * Tapestry
 * Vaadin
 * FreeMarker
 * jBPM
 * Intalio BPMS
 * JGroups
 * Alloy UI
 * Tiles
 * Apache ServiceMix
 * Mule
 * ehcache
 * and others

standards implemented by Liferay to communicate with other software

 * AJAX
 * iCalendar
 * Microformat
 * JSR-168, JSR-127, JSR-170, JSR-286 (Portlet 2.0)
 * JSR-314 (JSF 2.0)
 * OpenSearch
 * Open platform with support for web services (including JSON, Hessian, Burlap, REST, RMI, and WSRP)
 * WebDAV
 * CalDAV

Liferay Development
See here.

Types of plugins
The portal supports six different types of plugins:
 * Portlets: These are web applications that run in a portion of a web page.
 * Themes: These dictate the look and feel of your pages.
 * Layout Templates: These are ways of choosing how the portlets will be arranged on a page.
 * Hooks: These allow hooking into the portal core functionality.
 * Webs: These are regular Java EE web modules designed to work with the portal, like ESB (Enterprise Service Bus), SSO (Single Sign-On), and so on.
 * Ext: It uses Ext environment as a plugin; that is, you can use the extension environment as a plugin in Plugins SDK environment. Besides hooks, this is another tool that you can use to customize the portal core functionality.

Important Links

 * All downloads are available from Liferay portal website and SourceForge website
 * The source code repository is [svn://svn.liferay.com/repos/public here] available (use the username "Guest" and no password) and source code can be explored here.
 * Liferay wiki website contains documentation such as tutorial, user guide, developer guide, administrator guide, roadmap, and so on.
 * Liferay website discussion forums
 * Liferay website discussion blogs
 * Liferay offcial plugins
 * Liferay community plugins