Will your book also compare Liferay against other portal frameworks and possibly serve as a reference of comparative beneficial features and disadvantages/limitations? Say, how Liferay compares to the Weblogic Portal framewok..
Liferay vs. Closed Source Portals �Innovation - In its 9th year of development, Liferay boasts a history of innovation among both commercial and open source products. �Low TCO - Liferay provides the lowest total cost of ownership with ZERO license fees under the MIT license. �High ROI - Use your existing IT investment. There is no application server agenda and no pressure to pay for tools Develop portlets with a full featured IDE like Eclipse, Netbeans, and JBuilder or with lightweight editor like EditPlus, VI, and Emacs. �Freedom & Flexibility - Open source means the code is in your hands. If you want to customize it, you can. If there are security flaws, the community can participate in fixing it quickly. �Security - There is actually less risk in going with a sustained open source product than in going with a commercial vendor. Vendors can go out of business. Vendors can merge and render your product dead in the water. A sustained open source product like Liferay Portal has an active community around it that works together.
Liferay vs. Open Source Portals �Market Leadership - Liferay is the leader in downloads among all open source Java portals. �Principle - Not all open source licenses are created equal. Some require modifications to be contributed if you choose to sell or distribute your product. Some still charge a license fee for commercial use. �Maturity - Liferay has one of the most mature and active open source communities as evidenced by the active forums. �Stability - Aside from the impressive community, there is a real company behind the product driving product development.
[ May 29, 2008: Message edited by: Jonas X. Yuan ] [ May 29, 2008: Message edited by: Jonas X. Yuan ]