User development, A new message was posted in the thread "start a process within another process in jbpm 4.3": http://community.jboss.org/message/530032#530032 Author : Al Nadein Profile : http://community.jboss.org/people/matrixpooh Message: -------------------------------------------------------------- Hi,   Trying to port existing 3.2 workflow implementation into 4.3   My requirement is to be able to calculate a number of sub-processes to start at a certain step of the main process. Since I haven't found the way to do this in jpdl/bpmn, I'm doing this programmatically: When a main process is instantiated via   ProcessInstance processInstance = WorkflowTest.processEngine.getExecutionService().startProcessInstanceByKey("rmc", variables);   it proceeds through a few java tasks and stops at the wait state. One of those java tasks runs a few calculations and decides to create 2-3 processes (i'm calling them sub-processes for separation of concerns) via:   ProcessInstance processInstance = WorkflowTest.processEngine.getExecutionService().startProcessInstanceByKey("9.any");   The main process stops at the state task and flushes hibernate session.   The hibernate does the following: inserts records into jbpm4_execution for main process inserts records into jbpm4_execution for sub-processes /** does some inserts into history tables */ updates ID_ in jbpm4_execution for main process updates ID_ in jbpm4_execution for sub-processes   ---- The Exception is throw right here   The exception is thrown due to the ID_ field having a unique constrain. Upon insert, ID_ is null, then it's updated with key_+"."+dbid_ value. So if my dbid is 1090015 and process definition key is "rmc", the ID_ is "rms.109001" Since hibernate first inserts then updates, it fails to insert the second row that also has ID_=null at that moment.   I can think of only two solutions: (a) drop unique constrain (b) add 1 line to ExecutionImpl.java::save() right before saving: *this.id = this.dbid;* if (dbSession!=null) {       dbSession.save(this); }   Both of those solutions don't really look apealing. Any suggestions would be greatly appreciated. -------------------------------------------------------------- To reply to this message visit the message page: http://community.jboss.org/message/530032#530032