Liferay Portal

Omnys has gained a high expertise on the Liferay Portal platform, by participating in the architectural design and implementation of important web portals.

Liferay is a Portal Server product. The Portal Servers were developed in order to aggregate different services provided by company legacy systems in different modes according to user competence, roles and responsabilities inside an organisation.

Liferay is one of the most important open source products in the market of Portal Servers together with JBoss Portal with which it essentially shares the base for the business model.

The standards supported by Liferay Portal Server are the following:

Portlet Specification and API 1.0 (JSR-168);
Java Server Faces 1.2 (JSR-252);
Java Management Extension (JMX) 1.2;
Web Services for Remote Portlets (WSRP) 1.0 Base Level;
Full J2EE 1.4 compliance when used with JBoss AS.

To these some specific distinguishing features can be added:

Very simple installation: the deployment can be executed just by making a copy inside the JBoss AS deployment directory;
High dynamism: it is possible to create, remove and modify portlets, themes/layouts, windows and security settings at runtime;
IPC (Interportlet communication) notably strengthened via a gerarchic organisation of portlets;
Plugging Themes and Layouts.

Liferay Portal Server is in fact a Portlet Engine which is distributed as an "Enterprise Archive" (EAR) inside JBOSS Application Server: this allows it to take advantage, in a transparent way, of the JEMS suite:

Availability of a powerful ORM such as Hibernate;
JAAS authentication;
Caching;
Cluster Architecture;
Portlets hot deployment;
SSO/LDAP solutions;
Business Process Management & Business Rules;
Distributed transactions management;
Enterprise messaging (JMS).