[jboss-user] [jBPM] - Signal a wait state and suspend related running subprocesses
Stefano Cancedda
do-not-reply at jboss.com
Fri Sep 24 08:31:30 EDT 2010
Stefano Cancedda [http://community.jboss.org/people/festano1] created the discussion
"Signal a wait state and suspend related running subprocesses"
To view the discussion, visit: http://community.jboss.org/message/563527#563527
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Hi All,
I'm trying to realize a complex use case with Jbpm 4, and I'm lookin for some advises and answers.
My requisites are to implements some kind of "phases" inside a business process (which models an authorization issuing system
for a governative trade organization) that can be "modular" and pluggable to the basis of some normative & legal factors.
I've move to the use of sub-processes in order to implement this, using a dynamic el expression to decide in runtime what process definition of
instantiate as sub-process, via parameterizing the jpdl sub-process' key attribute.
So the structure is composed by a main process, that groups these phases, and many other subprocesses which can can be
authored by external system and business designers.
Another requisite is that in one phase (es: when an integration request is started) the main process is paused,
a timer is started (the pause cannot be longer than a business value, and users must be notified if the suspension is reaching it's limit),
and then resumed.
For authoring sub-process I don't find seamless to design for any subprocess some kind of a "suspension" state
(this would be always present, and redundant), so I'm thinking to enforce the suspension state at the level of the main process:
Hi All,
I'm trying to realize a complex use case with Jbpm 4, and I'm lookin for some advises and answers.
My requisites are to implements some kind of "+phases+" inside a business process (which models an authorization issuing system for a governative trade organization) that must be "modular" and +pluggable+ to the basis of some normative & legal factors.
I've move to the use of sub-processes in order to implement this, using a dynamic +el expression+ to decide in runtime what process definition of instantiate as sub-process, via parameterizing the jpdl sub-process' key attribute.
So the structure is composed by a main process, that groups these phases, and many other subprocesses which can can be
authored by external system and business designers.
Another requisite is that in one phase (es: when an integration request is started) the main process is paused,
a timer is started (the pause cannot be longer than a business value, and users must be notified if the suspension is reaching it's limit),
and then resumed.
For authoring sub-process I don't find seamless to design for any subprocess some kind of a "suspension" state
(this would be always present, and redundant), so I'm thinking to enforce the suspension state at the level of the main process:
http://community.jboss.org/servlet/JiveServlet/showImage/2-563527-9328/process.jpg http://community.jboss.org/servlet/JiveServlet/downloadImage/2-563527-9328/450-254/process.jpg
I cannot use the execution suspension of the main process, because of the timer's requisite (execution "*suspended*" state, also suspend timers and notifications),and I cannot +end+ the sub-process because formally, at the end of the "wait" period it must progress where the sub-process was left.
The problem is that when signaling the main execution to the "Suspend" state, there is a running sub-process instance that invalidate the operation:
0.0.1. EXCEPTION ###########################################10:42:32,067 INF | http://community.jboss.org/message/563527#563527 Signal a wait state and suspend related running subprocesses exception while executing command org.jbpm.pvm.internal.cmd.SignalCmd at 3ce40org.jbpm.api.JbpmException: execution[MainProcess.50026] has running subprocess: execution[SubProcessRequisitesEvaluation.340002] in state inactive-scope at org.jbpm.pvm.internal.model.ExecutionImpl.checkActive(ExecutionImpl.java:1090) at org.jbpm.pvm.internal.model.ExecutionImpl.signal(ExecutionImpl.java:427) at org.jbpm.pvm.internal.cmd.SignalCmd.execute(SignalCmd.java:61) at org.jbpm.pvm.internal.cmd.SignalCmd.execute(SignalCmd.java:35) at org.jbpm.pvm.internal.svc.DefaultCommandService.execute(DefaultCommandService.java:42) at org.jbpm.pvm.internal.tx.SpringCommandCallback.doInTransaction(SpringCommandCallback.java:45) at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:130) at org.jbpm.pvm.internal.tx.SpringTransactionInterceptor.execute(SpringTransactionInterceptor.java:49) at org.jbpm.pvm.internal.svc.EnvironmentInterceptor.executeInNewEnvironment(EnvironmentInterceptor.java:53) at org.jbpm.pvm.internal.svc.EnvironmentInterceptor.execute(EnvironmentInterceptor.java:40) at org.jbpm.pvm.internal.svc.RetryInterceptor.execute(RetryInterceptor.java:56) at org.jbpm.pvm.internal.svc.ExecutionServiceImpl.signalExecutionById(ExecutionServiceImpl.java:93)
I've tried to suspend the sub-process activity execution and resume the main-process activity that maps the sub-process execution (the one in "inactive-scope" state) but it have no effect:
... ExecutionImpl execution = (ExecutionImpl) executionService.findExecutionById(processId);logger.info( "MAIN-PROCESS STATE= " + processId + " " + execution.getState() );if(execution.getSubProcessInstance() != null){ logger.info( "SUB_PROCESS STATE= " + execution.getSubProcessInstance().getId() + " " + execution.getSubProcessInstance().getState() ); if(Execution.STATE_INACTIVE_SCOPE.equalsIgnoreCase(execution.getSubProcessInstance().getState())){ ExecutionImpl state = execution.getSubProcessInstance().findActiveExecutionIn(activeState); state.suspend(); execution.getSubProcessInstance().suspend(); logger.info( "SUB_PROCESS STATE= " + execution.getSubProcessInstance().getId() + " " + execution.getSubProcessInstance().getState() ); logger.info( "SUB_PROCESS ACTIVITY STATE " + state + " " + state.getState() ); execution.resume(); logger.info( "MAIN-PROCESS STATE " + execution + " " + execution.getState() ); }} executionService.signalExecutionById(processId, transitionName, variables);
this is the log:
INFO ProcessServiceBean - Active state: EVALUATIONINFO ProcessServiceBean - MAIN-PROCESS STATE= MainProcess.50026 active-rootINFO ProcessServiceBean - SUB_PROCESS STATE= SubProcessRequisitesEvaluation.340002 inactive-scopeINFO ProcessServiceBean - SUB_PROCESS STATE= SubProcessRequisitesEvaluation.340002 suspendedINFO ProcessServiceBean - SUB_PROCESS ACTIVITY STATE= execution[SubProcessRequisitesEvaluation.340002.TaxCompliance.340005] suspendedINFO ProcessServiceBean - MAIN-PROCESS STATE execution[MainProcess.50026] active-root### EXCEPTION ###########################################12:05:39,201 INF | http://community.jboss.org/message/563527#563527 Signal a wait state and suspend related running subprocesses exception while executing command org.jbpm.pvm.internal.cmd.SignalCmd at ebd0beorg.jbpm.api.JbpmException: execution[MainProcess.50026] has running subprocess: execution[SubProcessRequisitesEvaluation.340002] in state suspended at org.jbpm.pvm.internal.model.ExecutionImpl.checkActive(ExecutionImpl.java:1090) at org.jbpm.pvm.internal.model.ExecutionImpl.signal(ExecutionImpl.java:427) at org.jbpm.pvm.internal.cmd.SignalCmd.execute(SignalCmd.java:61) at org.jbpm.pvm.internal.cmd.SignalCmd.execute(SignalCmd.java:35
So, I'm wondering if the behaviour of Jbpm is wrong or if it's supposed to work in this way (namely: "cannot signal parent execution id subprocess are suspended"), or BTW if there is a common way to implement this set of requisites.
thank you in advance for any help you can give me!
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