How to connect a disconnected process instance?

[awizenm]

Hi all,

in my test case I'm trying to set a process variable:

// start a new process instance
Map<String, Object> params = new HashMap<String, Object>();

params.put("userAction", "");
ProcessInstance processInstance = ksession.startProcess("myProcess", params);

((WorkflowProcessInstance) processInstance).setVariable("userAction", "deleteAction");

Unfortunately the last line throws the exception:

java.lang.RuntimeException: Process instance 7[myProcess] is disconnected.

So my question is: how to connect the process instance?

[awizenm]

The solution was RTFM ;-)

see: http://docs.jboss.org/jbpm/v6.2/userguide/jBPMBPMN2.html#d0e3731

My actual intention was to modify (or to set) the process variable.

So this is what works for me now:

ksession.execute(new GenericCommand<Map<String, Object>>() {

    @Override
    public Map<String, Object> execute(Context context) {

        KieSession ksession = ((KnowledgeCommandContext) context).getKieSession();
        org.jbpm.process.instance.ProcessInstance processInstance = (org.jbpm.process.instance.ProcessInstance) ksession.getProcessInstance(id);

        VariableScopeInstance variableScope = (VariableScopeInstance) processInstance.getContextInstance(VariableScope.VARIABLE_SCOPE);

        Map<String, Object> variables = variableScope.getVariables();

        variableScope.setVariable("userAction", "deleteAction");

        return variables;
    }
});

[awizenm]

While the GenericCommand solution works, it is presumably not the preferred way of passing data in a jBPM 6.2 processes.

So I have created an Output Data Mapping in my Task:

Now in the test class I can pass the value on the task completion.

Map<String, Object> results = new HashMap<String, Object>();
results.put("userAction", "deleteAction");
taskService.complete(taskSummary.getId(), "userA", results);

And then the variable "userAction" is available for the evaluation in the subsequent split in the process.