Just a short question: What integration of Groovy? What is the goal and motivation of this? Why do you work on this?
Or maybe I just missed it and Tom can enlighten me ;-)
I've proposed my contribution to the jBPM project and from the list of available assignments
Please check the following link: http://www.jboss.org/community/docs/DOC-13299. I choosed to work in the integration the scripting language Groovy in jbpm-4.
Tom can give you more details.
jbpm has a script manager which is jsr223 based. in order to add a script language, you can plug in the new language by configuring the script manager.
in e.g. the script activity, you can specify the language.
it's mostly about getting the right dependencies in the pom and in the distribution and adding the script-manager configuration line so that the script activity can also handle groovy scripts.
Have you considered integrating a groovy web-console like Guillaume Laforges:
or my attempt: