public long ExecuteTask(DbSession dbSession, IOrganisationSessionLocal organisationComponent)
{
long millisToWait = DEFAULT_INTERVAL;
DateTime now = DateTime.Now;
IEnumerator iter = dbSession.Iterate(queryFindJobsToBeExecuted, now, DbType.TIMESTAMP).GetEnumerator();
if (iter.MoveNext())
{
JobImpl job = (JobImpl) iter.Current;
try
{
log.Debug("executing activation '" + job.Id + "' scheduled for " + job.Date.ToString());
log.Debug("activation's flow-context is :" + job.Context);
String userId = job.UserId;
DelegationImpl actionDelegation = job.ActionDelegation;
ExecutionContextImpl executionContext = new ExecutionContextImpl(userId, dbSession, organisationComponent);
IFlow context = job.Context;
if (context != null)
{
executionContext.SetFlow(context);
executionContext.SetProcessInstance(context.ProcessInstance);
executionContext.SetProcessDefinition(context.ProcessInstance.ProcessDefinition);
}
else
{
executionContext.SetProcessDefinition(job.ProcessDefinition);
}
delegationHelper.DelegateScheduledAction(actionDelegation, executionContext);
}
catch (Exception t)
{
log.Error("scheduler-exception : couldn't perform task : " + t.Message, t);
}
dbSession.Delete(job);
dbSession.Flush();
if (iter.MoveNext())
{
return 0;
}
}
iter = dbSession.Iterate(queryFindJobsInTheFuture, now, DbType.TIMESTAMP).GetEnumerator();
if (iter.MoveNext())
{
JobImpl activation = (JobImpl) iter.Current;
long activationDate = activation.Date.Ticks;
millisToWait = activationDate - now.Ticks;
log.Debug("next activation is scheduled at " + activation.Date.ToString() + ", (in " + millisToWait + " millis)");
if (millisToWait < 0)
millisToWait = 0;
if (millisToWait > DEFAULT_INTERVAL)
millisToWait = DEFAULT_INTERVAL;
}
return millisToWait;
}
public void ProcessJoin(JoinImpl join, ExecutionContextImpl executionContext,DbSession dbSession)
{
// First set the state of the flow to finished
FlowImpl joiningFlow = (FlowImpl) executionContext.GetFlow();
joiningFlow.End = DateTime.Now;
joiningFlow.ActorId = null;
joiningFlow.Node = join; // setting the node is not necessary if this method is called
// from processTransition, but it is necessary if this method is
// called from cancelFlow in the component-impl.
// if parent-reactivation of the flow is true, this means that the parent-flow
// not yet has been reactivated. In that case we have to see if it needs to be
// reactivated. In the other case (parent-reactivation is false) we don't
// need to do anything because this means that the parent-flow was already
// reactivated before.
if (!false.Equals(joiningFlow.ParentReactivation))
{
// check if the parent needs to be reactivated
bool parentReactivation = false;
IList concurrentFlows = executionContext.GetOtherActiveConcurrentFlows();
if (concurrentFlows.Count == 0)
{
// if no concurrent flows are present any more, reactivation is forced
parentReactivation = true;
}
else
{
// if other concurrent flows are present, the decision to reactivate is left
// to the join-delegation (if there is one specified)
DelegationImpl joinDelegation = join.JoinDelegation;
// if no joinDelegation was specified, parentReactivation remains false
// so the behaviour is like an and-join. (=sunchronizing merge)
if (joinDelegation != null)
{
parentReactivation = delegationHelper.DelegateJoin(join.JoinDelegation, executionContext);
}
}
if (parentReactivation)
{
// make sure the other concurrent flows will not reactivate the
// parent again
IEnumerator iter = concurrentFlows.GetEnumerator();
while (iter.MoveNext())
{
//UPGRADE_TODO: Methode "java.util.Iterator.next" wurde in 'IEnumerator.Current' konvertiert und weist ein anderes Verhalten auf. 'ms-help://MS.VSCC.2003/commoner/redir/redirect.htm?keyword="jlca1073_javautilIteratornext"'
FlowImpl concurrentFlow = (FlowImpl) iter.Current;
concurrentFlow.ParentReactivation = false;
}
// reactivate the parent by first setting the parentflow into the executionContext
FlowImpl parentFlow = (FlowImpl) joiningFlow.Parent;
executionContext.SetFlow(parentFlow);
// and then process the (single, checked at process-archive-parsing-time) leaving transition.
ISet leavingTransitions = join.LeavingTransitions;
iter = leavingTransitions.GetEnumerator();
if (iter.MoveNext())
{
TransitionImpl leavingTransition = (TransitionImpl) iter.Current;
ProcessTransition(leavingTransition, executionContext,dbSession);
} else {
// no transition throw exception?
}
}
}
}
public void ProcessJoin(JoinImpl join, ExecutionContextImpl executionContext, DbSession dbSession)
{
// First set the state of the flow to finished
FlowImpl joiningFlow = (FlowImpl)executionContext.GetFlow();
joiningFlow.End = DateTime.Now;
joiningFlow.ActorId = null;
joiningFlow.Node = join; // setting the node is not necessary if this method is called
// from processTransition, but it is necessary if this method is
// called from cancelFlow in the component-impl.
// if parent-reactivation of the flow is true, this means that the parent-flow
// not yet has been reactivated. In that case we have to see if it needs to be
// reactivated. In the other case (parent-reactivation is false) we don't
// need to do anything because this means that the parent-flow was already
// reactivated before.
if (!false.Equals(joiningFlow.ParentReactivation))
{
// check if the parent needs to be reactivated
bool parentReactivation = false;
IList concurrentFlows = executionContext.GetOtherActiveConcurrentFlows();
if (concurrentFlows.Count == 0)
{
// if no concurrent flows are present any more, reactivation is forced
parentReactivation = true;
}
else
{
// if other concurrent flows are present, the decision to reactivate is left
// to the join-delegation (if there is one specified)
DelegationImpl joinDelegation = join.JoinDelegation;
// if no joinDelegation was specified, parentReactivation remains false
// so the behaviour is like an and-join. (=sunchronizing merge)
if (joinDelegation != null)
{
parentReactivation = delegationHelper.DelegateJoin(join.JoinDelegation, executionContext);
}
}
if (parentReactivation)
{
// make sure the other concurrent flows will not reactivate the
// parent again
IEnumerator iter = concurrentFlows.GetEnumerator();
while (iter.MoveNext())
{
//UPGRADE_TODO: Methode "java.util.Iterator.next" wurde in 'IEnumerator.Current' konvertiert und weist ein anderes Verhalten auf. 'ms-help://MS.VSCC.2003/commoner/redir/redirect.htm?keyword="jlca1073_javautilIteratornext"'
FlowImpl concurrentFlow = (FlowImpl)iter.Current;
concurrentFlow.ParentReactivation = false;
}
// reactivate the parent by first setting the parentflow into the executionContext
FlowImpl parentFlow = (FlowImpl)joiningFlow.Parent;
executionContext.SetFlow(parentFlow);
// and then process the (single, checked at process-archive-parsing-time) leaving transition.
ISet leavingTransitions = join.LeavingTransitions;
iter = leavingTransitions.GetEnumerator();
if (iter.MoveNext())
{
TransitionImpl leavingTransition = (TransitionImpl)iter.Current;
ProcessTransition(leavingTransition, executionContext, dbSession);
}
else
{
// no transition throw exception?
}
}
}
}
public void ProcessFork(ForkImpl fork, ExecutionContextImpl executionContext,DbSession dbSession)
{
log.Debug("forking flow " + executionContext.GetFlow());
// First initialize the children of the flow to be forked
FlowImpl flow = (FlowImpl) executionContext.GetFlow();
flow.Children = new ListSet();
// Then initialise the forked flows in the execution context
executionContext.ForkedFlows = new ArrayList();
DelegationImpl delegation = fork.ForkDelegation;
if (delegation != null)
{
delegationHelper.DelegateFork(fork.ForkDelegation, executionContext);
}
else
{
// execute the default fork behaviour
IEnumerator iter = fork.LeavingTransitions.GetEnumerator();
while (iter.MoveNext())
{
TransitionImpl transition = (TransitionImpl) iter.Current;
executionContext.ForkFlow(transition, null);
}
}
// create the fork event & remember the parent flow
FlowImpl parentFlow = (FlowImpl) executionContext.GetFlow();
executionContext.CreateLog(EventType.FORK);
// log the event
executionContext.SetFlow(parentFlow);
IList forkedFlows = executionContext.ForkedFlows;
IEnumerator iter2 = forkedFlows.GetEnumerator();
while (iter2.MoveNext())
{
ForkedFlow forkedFlow = (ForkedFlow) iter2.Current;
log.Debug("adding object reference [" + forkedFlow.Flow + "] to flow [" + parentFlow + "]");
executionContext.AddLogDetail(new ObjectReferenceImpl(forkedFlow.Flow));
}
// loop over all flows that were forked in the ForkHandler implementation
iter2 = forkedFlows.GetEnumerator();
while (iter2.MoveNext())
{
ForkedFlow forkedFlow = (ForkedFlow) iter2.Current;
// trigger actions, scheduled after the creation and setting of the attributeValues
// but before the fork is being processed
delegationService.RunActionsForEvent(EventType.FORK, fork.Id, executionContext,dbSession);
// then process the forked flow transition
executionContext.SetFlow(forkedFlow.Flow);
ProcessTransition(forkedFlow.Transition, executionContext,dbSession);
}
}
public void ProcessFork(ForkImpl fork, ExecutionContextImpl executionContext, DbSession dbSession)
{
log.Debug("forking flow " + executionContext.GetFlow());
// First initialize the children of the flow to be forked
FlowImpl flow = (FlowImpl)executionContext.GetFlow();
flow.Children = new ListSet();
// Then initialise the forked flows in the execution context
executionContext.ForkedFlows = new ArrayList();
DelegationImpl delegation = fork.ForkDelegation;
if (delegation != null)
{
delegationHelper.DelegateFork(fork.ForkDelegation, executionContext);
}
else
{
// execute the default fork behaviour
IEnumerator iter = fork.LeavingTransitions.GetEnumerator();
while (iter.MoveNext())
{
TransitionImpl transition = (TransitionImpl)iter.Current;
executionContext.ForkFlow(transition, null);
}
}
// create the fork event & remember the parent flow
FlowImpl parentFlow = (FlowImpl)executionContext.GetFlow();
executionContext.CreateLog(EventType.FORK);
// log the event
executionContext.SetFlow(parentFlow);
IList forkedFlows = executionContext.ForkedFlows;
IEnumerator iter2 = forkedFlows.GetEnumerator();
while (iter2.MoveNext())
{
ForkedFlow forkedFlow = (ForkedFlow)iter2.Current;
log.Debug("adding object reference [" + forkedFlow.Flow + "] to flow [" + parentFlow + "]");
executionContext.AddLogDetail(new ObjectReferenceImpl(forkedFlow.Flow));
}
// loop over all flows that were forked in the ForkHandler implementation
iter2 = forkedFlows.GetEnumerator();
while (iter2.MoveNext())
{
ForkedFlow forkedFlow = (ForkedFlow)iter2.Current;
// trigger actions, scheduled after the creation and setting of the attributeValues
// but before the fork is being processed
delegationService.RunActionsForEvent(EventType.FORK, fork.Id, executionContext, dbSession);
// then process the forked flow transition
executionContext.SetFlow(forkedFlow.Flow);
ProcessTransition(forkedFlow.Transition, executionContext, dbSession);
}
}
