Inserting new facts into a running process?

[mpgong]

Hello,

I have a process that has a script task node that gets data that needs to be inserted in the knowledge session because the next task following is a business rule task.  But i don't think the rules are running because there are now facts to match against.  How are new facts inserted at runtime inside a process?

I've tried this kcontext.getKnowledgeRuntime().insert(itemList) but that doesn't seem to cause the engine to fire any rules even though i know the data should.

Does anyone know how to insert the facts properly?  Unfortunately i can do it ahead of time, also i insert the process into the session as well to get at process var so i hope that isn't causing any issues with things.

Thanks

[milhaim]

Hi,

First you need to add a AgendaEventListener to fire all rules automatically :

new AgendaEventListener() {

.....

   public void afterRuleFlowGroupActivated(RuleFlowGroupActivatedEvent event,

                    WorkingMemory workingMemory) {

                  workingMemory.fireAllRules();

            }

second another listner to update the working memery after a change on the processInstane

return new ProcessEventListener() {

....

public void afterVariableChanged(ProcessVariableChangedEvent event) {

      org.drools.runtime.rule.FactHandle handle = event.getKnowledgeRuntime().getFactHandle( event.getProcessInstance() );

       event.getKnowledgeRuntime().update( handle, event.getProcessInstance() );

}

more here : https://community.jboss.org/message/608017

HTH