currently, our model only has transition as the directed connection between nodes. the BPDM (http://www.bpmn.org/BPDM_Documents.htm) defines multiple types of connections: * sequence flow (for execution transitions) * message flow (expressing how data flows in the process) * association (just any association that a business user can draw between two graphical elements) would it make sense to add multiple types of connections to the jbpm core library over time ? how could these be used in jPDL ? what would a data connection mean exactly ? what are its possible sources and destinations ? could data connections also influence the execution ? e.g. if execution arrives in a node that also is the destination of a data connection and that data is not available yet, should be process execution be halted till the data becomes avialable ? more questions then answers. please add your opinions so that we can get closer to the answers :-) View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3981995#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...