I wanted to improve the structure of my jbpm process and therefore tried to encapsulate some stuff in a reusable subprocess. Following the instructions in the documentation, I first created a simple test-process to validate its behavior.
To achieve this, I defined the following:
A (parent-)process with 2 variables "sub_in" and "sub_out" of type String. A second (child-)process with 2 variables "in_sub" and "out_sub" of type String.
The parent process contains a Script Task, which sets "sub_in" to "input", a Sub-process Task (calling the child-process), and a second Script Task, which outputs the value of "sub_out".
The child-process contains a single Script Task, which outputs the value of "in_sub" and sets "out_sub" to "output". Additionally I defined an I/O-mapping of (Name: "in_sub", Data Type: "String", Source "sub_in") and (Name "out_sub", Data Type: "String", Target: "sub_out").
Surprisingly, both scripts output null as value of the corresponding variable. Is this feature broken in version 6.4.0? Am I missing something? I saw a similar question on Google groups, but without any reactions.
FYI: I am using a the Kie-Workbench and KIE Execution server (both Version 6.4.0.Final on two JBoss EAP 6.4 instances) to design and run the processes.
Any suggestions are appreciated.
