Open Source / Non-Proprietary
model-driven architecture "on rails" (licensed under the GNU LGPL)
Taylor's model driven architecture on rails makes creating JEE applications as easy as the much talked about ruby-on-rails, but with all the power of JEE and UML. Business models are defined using simplified UML diagrams following well-defined conventions. These models are then used to generate the exact same ejb3/portlet code your would write by hand. Then use the code as is or modify it as you see fit and your changes will be preserved.
Taylor consists of a set of Eclipse plugins for simplified UML modeling and the generation of JEE code such as: EJB3 entity and session beans, JSR-168 Portlets, and JMS-based business processes. It leverages many other open-source tools instead of reinventing the wheel. Read more about the Architecture.
Why did I write Taylor? Check out my blog entry.
Taylor implements MDA. Model Driven Architecture (MDA) is the concept of first defining a Platform Independent Model (PIM) and then using the PIM to generate a Platform Specific Model (PSM). Taylor's simplified UML business models represent the PIM and its customizable templates generate the PSM.
Taylor also applies Convention-based Development. There are many ways to build the same application. But, if proven conventions are followed then code generation and development can be much more productive and can put you on the fast track to success. Hence MDA on rails. Taylor's simplified UML models embody these conventions.
Taylor distingishes itself from other tools by three key concepts: