State machine workflow framework

Question

I'm about to implement a state machine based workflow in my app and I've encountered an interesting framework that could make this task easier - http://code.google.com/p/stateless/
Sadly, it's for C# only.
Does anyone know about a similar workflow framework for Java? I'm afraid integrating Drools would take a lot more time than I can afford, I need something lightweight like the Stateless framework.

Answer 1

You can try

http://unimod.sourceforge.net/fsm-framework.html

http://today.java.net/pub/a/today/2006/01/04/business-processes-with-osworkflow.html

http://jakarta.apache.org/site/downloads/downloads_commons-scxml.cgi

http://springframework.org/webflow

http://www.jboss.org/jbpm

http://www.complang.org/ragel/

http://today.java.net/article/2009/09/06/finite-state-machine-supporting-concurrent-states

Or instead of using a framework, you can use an enum to do it (which is what I do)

http://vanillajava.blogspot.com/2011/06/java-secret-using-enum-as-state-machine.html