Hi Sai.

Lets say you have Process A with  a "Sub Process Activity SP" whose called element is "Sub Process B". You have to take the Process A's Sub Process Activity and assign the input and output variables.  Now looks like that to me this Input and Output variables are in the kcontext before the control is passed to the Sub Process Inside the Process B,  retrieve them via getVariable Method in kcontext and it will work.  I hope this helps.

Thanks

Sanjay Gautam,

(If you think answer was helpful please mark it so )

you can either use signal events with event data being the variable and then your parent process would need to listen to that event or you can load parent process from within you child process and manually set variable on it. My recommendation would be to use signals for that as it goes via standard api - note that by default signals are broadcasts so it will signal all process isntances listening to given signal. But you can direct it to given instance as well by using:

kcontext.getKieRuntime().signalEvent(name, data, pInstanceId)

and you can do that from child process script task.

HTH

. . wrote:

 

There's a correction to my question.  I didn't phrase it properly:

 

I would like the data i got in sub-process (in a script task) to be assigned to a variable in parent process.  It would work when sub-process ends but i need the data at that instant of time.  I'm not able to do that.  kcontext.setVariable - to access parent process variable return with "error - process variable does not exist" as it appears to look only at the sub-process level

 

 

Regards,
Sai

Hi Sai ,

I am not sure what will be benefit to update the parent process variable even before the sub process finishes ? what is the scenario you want to accomplish.  ?

Hi Maciej,

I implemented my workflow using RedHat Business Central version 6.4GA. I also need to set a value in parent process instance from a sub process instance. I used kcontext.getKieRuntime().signalEvent(name, data, pInstanceId). The following is the content of the script task of reusable subprocess:

logger.debug("process instance id: " + kcontext.getProcessInstance().getId());

long parentId = kcontext.getProcessInstance().getParentProcessInstanceId();

logger.debug("parent process instance id: " + parentId);

kcontext.getKieRuntime().signalEvent("childProcessReport", workflowId, parentId);

Do you know why I am getting following exception? Thanks!

11:52:24,256 INFO  [stdout] (Log4j2-TF-2-AsyncLoggerConfig-1) 11:52:24.255 DEBUG  : process instance id: 28

11:52:24,256 INFO  [stdout] (Log4j2-TF-2-AsyncLoggerConfig-1) 11:52:24.255 DEBUG :  parent process instance id: 27

11:52:24,308 WARN  [org.kie.remote.services.cdi.ProcessRequestBean] (default task-17) Unable to execute SignalEventCommand/0: org.kie.remote.services.rest.exception.KieRemoteRestOperationException: [OrderWorkFlow.front-delivery:28 - Report WorkflowId:151] -- Invalid session was used for this context org.kie.internal.runtime.manager.context.ProcessInstanceIdContext@c9e434

at org.kie.remote.services.rest.exception.KieRemoteRestOperationException.internalServerError(KieRemoteRestOperationException.java:151)

at org.kie.remote.services.cdi.ProcessRequestBean.doKieSessionOperation(ProcessRequestBean.java:305)

at org.kie.remote.services.cdi.ProcessRequestBean.processCommand(ProcessRequestBean.java:205)

at org.kie.remote.services.cdi.ProcessRequestBean$Proxy$_$$_WeldClientProxy.processCommand(Unknown Source)

at org.kie.remote.services.util.ExecuteCommandUtil.restProcessJaxbCommandsRequest(ExecuteCommandUtil.java:61)

at org.kie.remote.services.rest.ExecuteResourceImpl.execute(ExecuteResourceImpl.java:60)

at org.kie.remote.services.rest.ExecuteResourceImpl$Proxy$_$$_WeldClientProxy.execute(Unknown Source)

at sun.reflect.GeneratedMethodAccessor315.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:497)

at org.jboss.resteasy.core.MethodInjectorImpl.invoke(MethodInjectorImpl.java:139)

at org.jboss.resteasy.core.ResourceMethodInvoker.invokeOnTarget(ResourceMethodInvoker.java:295)

at org.jboss.resteasy.core.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:249)

at org.jboss.resteasy.core.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:236)

at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:395)

at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:202)

at org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher.service(ServletContainerDispatcher.java:221)

at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:56)

at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:51)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)

at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:85)

at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:129)

at org.kie.remote.services.rest.jaxb.DynamicJaxbContextFilter.doFilter(DynamicJaxbContextFilter.java:67)

at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61)

at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)

at org.uberfire.ext.security.server.BasicAuthSecurityFilter.doFilter(BasicAuthSecurityFilter.java:70)

at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61)

at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)

at org.uberfire.ext.security.server.SecureHeadersFilter.doFilter(SecureHeadersFilter.java:69)

at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61)

at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)

at org.uberfire.ext.security.server.SecurityIntegrationFilter.doFilter(SecurityIntegrationFilter.java:57)

at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61)

at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)

at io.undertow.servlet.handlers.FilterHandler.handleRequest(FilterHandler.java:84)

at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:62)

at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36)

at org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.handleRequest(SecurityContextAssociationHandler.java:78)

at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)

at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:131)

at io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:57)

at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)

at io.undertow.security.handlers.AuthenticationConstraintHandler.handleRequest(AuthenticationConstraintHandler.java:51)

at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:46)

at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:64)

at io.undertow.servlet.handlers.security.ServletSecurityConstraintHandler.handleRequest(ServletSecurityConstraintHandler.java:56)

at io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:60)

at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:77)

at io.undertow.security.handlers.NotificationReceiverHandler.handleRequest(NotificationReceiverHandler.java:50)

at io.undertow.security.handlers.AbstractSecurityContextAssociationHandler.handleRequest(AbstractSecurityContextAssociationHandler.java:43)

at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)

at org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:61)

at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)

at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)

at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:285)

at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:264)

at io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:81)

at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:175)

at io.undertow.server.Connectors.executeRootHandler(Connectors.java:202)

at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:792)

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

at java.lang.Thread.run(Thread.java:745)

Caused by: org.jbpm.workflow.instance.WorkflowRuntimeException: [OrderWorkFlow.front-delivery:28 - Report WorkflowId:151] -- Invalid session was used for this context org.kie.internal.runtime.manager.context.ProcessInstanceIdContext@c9e434

at org.jbpm.workflow.instance.impl.NodeInstanceImpl.executeAction(NodeInstanceImpl.java:206)

at org.jbpm.workflow.instance.node.ActionNodeInstance.internalTrigger(ActionNodeInstance.java:48)

at org.jbpm.workflow.instance.impl.NodeInstanceImpl.trigger(NodeInstanceImpl.java:173)

at org.jbpm.workflow.instance.impl.NodeInstanceImpl.triggerNodeInstance(NodeInstanceImpl.java:366)

at org.jbpm.workflow.instance.impl.NodeInstanceImpl.triggerCompleted(NodeInstanceImpl.java:325)

at org.jbpm.workflow.instance.impl.ExtendedNodeInstanceImpl.triggerCompleted(ExtendedNodeInstanceImpl.java:44)

at org.jbpm.workflow.instance.node.EventNodeInstance.triggerCompleted(EventNodeInstance.java:82)

at org.jbpm.workflow.instance.node.EventNodeInstance.signalEvent(EventNodeInstance.java:63)

at org.jbpm.workflow.instance.impl.WorkflowProcessInstanceImpl.signalEvent(WorkflowProcessInstanceImpl.java:526)

at org.drools.core.command.runtime.process.SignalEventCommand.execute(SignalEventCommand.java:125)

at org.drools.core.command.runtime.process.SignalEventCommand.execute(SignalEventCommand.java:39)

at org.drools.core.command.impl.DefaultCommandService.execute(DefaultCommandService.java:36)

at org.drools.core.command.impl.AbstractInterceptor.executeNext(AbstractInterceptor.java:41)

at org.drools.persistence.SingleSessionCommandService$TransactionInterceptor.execute(SingleSessionCommandService.java:604)

at org.drools.core.command.impl.AbstractInterceptor.executeNext(AbstractInterceptor.java:41)

at org.drools.persistence.jpa.OptimisticLockRetryInterceptor.execute(OptimisticLockRetryInterceptor.java:82)

at org.drools.core.command.impl.AbstractInterceptor.executeNext(AbstractInterceptor.java:41)

at org.drools.persistence.jta.TransactionLockInterceptor.execute(TransactionLockInterceptor.java:73)

at org.drools.persistence.SingleSessionCommandService.execute(SingleSessionCommandService.java:397)

at org.drools.core.command.impl.CommandBasedStatefulKnowledgeSession.execute(CommandBasedStatefulKnowledgeSession.java:520)

at org.jbpm.kie.services.impl.ProcessServiceImpl.execute(ProcessServiceImpl.java:488)

at org.jbpm.services.cdi.impl.ProcessServiceCDIImpl$Proxy$_$$_WeldClientProxy.execute(Unknown Source)

at org.kie.remote.services.cdi.ProcessRequestBean.doKieSessionOperation(ProcessRequestBean.java:298)

... 61 more

Caused by: java.lang.IllegalStateException: Invalid session was used for this context org.kie.internal.runtime.manager.context.ProcessInstanceIdContext@c9e434

at org.jbpm.runtime.manager.impl.PerProcessInstanceRuntimeManager.validate(PerProcessInstanceRuntimeManager.java:214)

at org.jbpm.persistence.processinstance.JPAProcessInstanceManager.getProcessInstance(JPAProcessInstanceManager.java:107)

at org.jbpm.process.instance.ProcessRuntimeImpl.getProcessInstance(ProcessRuntimeImpl.java:283)

at org.jbpm.process.instance.ProcessRuntimeImpl.getProcessInstance(ProcessRuntimeImpl.java:279)

at org.drools.core.impl.StatefulKnowledgeSessionImpl.getProcessInstance(StatefulKnowledgeSessionImpl.java:1918)

at org.jbpm.process.instance.event.DefaultSignalManager.signalEvent(DefaultSignalManager.java:88)

at org.jbpm.process.instance.ProcessRuntimeImpl.signalEvent(ProcessRuntimeImpl.java:486)

at org.drools.core.impl.StatefulKnowledgeSessionImpl.signalEvent(StatefulKnowledgeSessionImpl.java:561)

at org.jbpm.Process_org$u46$jbpm$u46$Front$u45$Delivery$u45$Subprocess2109514247.action93(Process_org$u46$jbpm$u46$Front$u45$Delivery$u45$Subprocess2109514247.java:1088)

at org.jbpm.Process_org$u46$jbpm$u46$Front$u45$Delivery$u45$Subprocess2109514247Action93Invoker.execute(Process_org$u46$jbpm$u46$Front$u45$Delivery$u45$Subprocess2109514247Action93Invoker.java:15)

at org.jbpm.workflow.instance.impl.NodeInstanceImpl.executeAction(NodeInstanceImpl.java:200)