Esteban Aliverti [http://community.jboss.org/people/eaa] created the discussion "Re: How does a sub-process work?" To view the discussion, visit: http://community.jboss.org/message/610649#610649 -------------------------------------------------------------- In JBPM5 you have two different scopes: one are process' variables and the other is ksession (shared among all the processes running in it). In the case of variables, you need to map the input and output variables of your sub-process using the editor for example. So If you want to use a variable from the main process in the sub-process, you need to define an input parameter in the sub-process and do the corresponding mapping in the reusable-subprocess node of your main process. If your sub-process modifies the variable or creates a new one and you want to use it in the main process, you need to map (again, in the reusable-subprocss node) the output variable from the sub-process to a variable in the main process. In the case of embedded sub-processes, you don't need to do these mappings, because both processes are in the same "context". If you are storing variables in you session (using insert() for example), you don need to do anything special. You don't even need to pass the ksession from the main process to the sub-process. Both processes could reach the same ksession using the "magic" variable kcontext: kcontext.getKnowledgeRuntime()  Best Regards,  -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/610649#610649] Start a new discussion in jBPM at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]

Esteban Aliverti [http://community.jboss.org/people/eaa] created the discussion "Re: How does a sub-process work?" To view the discussion, visit: http://community.jboss.org/message/610772#610772 -------------------------------------------------------------- The ksession is shared among all the processes and sub-processes no matter the sub-process type. So what you get in your main process when you invoke kcontext.getKnowledgeRuntime() is the same object that you get in a (reusable or embedded) sub-process when you invoke kcontext.getKnowledgeRuntime(). If you still want to see a simple example using embedded sub-process you can take a look at the same example project I have provided. -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/610772#610772] Start a new discussion in jBPM at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]

Esteban Aliverti [http://community.jboss.org/people/eaa] created the discussion "Re: How does a sub-process work?" To view the discussion, visit: http://community.jboss.org/message/610791#610791 -------------------------------------------------------------- Be careful! In your example, you are working with the process instance and not the session. So kcontext.*getKnowledgeRuntime*() will return the same StatefullKnowledgeSession in both of your processes. But, kcontext.*getProcessInstance*() will return different process instances of course (one is the main process and the other one is the sub-process). For example, in the test I have provided to you, I'm declaring a variable (messages) in the parent process: <property id="messages" itemSubjectRef="_messagesItem"/> Because I want to use this variable in my sub-process, I need to declare a variable of the same type in it: <property id="internalMessages" itemSubjectRef="_internalMessagesItem"/> Then, in the reusable-subprocess node (in the paren process) I need to copy the value from messages to internalMessages: <dataInputAssociation>         <sourceRef>messages</sourceRef>         <targetRef>_5_internalMessagesInput</targetRef> </dataInputAssociation> And because I need to use the modified value of this variable in my parent process once the sub-process is finished, I also need to do an output mapping: <dataOutputAssociation>         <sourceRef>_5_internalMessagesOutput</sourceRef>         <targetRef>messages</targetRef> </dataOutputAssociation> Of course you can use eclipse editor to do all these things in a more user-friendly way :) Best Regards, -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/610791#610791] Start a new discussion in jBPM at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]