protected internal override void instantiateScopes(MigratingScopeInstance ancestorScopeInstance, MigratingScopeInstanceBranch executionBranch, IList <ScopeImpl> scopesToInstantiate)
{
if (scopesToInstantiate.Count == 0)
{
return;
}
ExecutionEntity ancestorScopeExecution = ancestorScopeInstance.resolveRepresentativeExecution();
ExecutionEntity parentExecution = ancestorScopeExecution;
foreach (ScopeImpl scope in scopesToInstantiate)
{
ExecutionEntity compensationScopeExecution = parentExecution.createExecution();
compensationScopeExecution.Scope = true;
compensationScopeExecution.EventScope = true;
compensationScopeExecution.setActivity((PvmActivity)scope);
compensationScopeExecution.Active = false;
compensationScopeExecution.activityInstanceStarting();
compensationScopeExecution.enterActivityInstance();
EventSubscriptionEntity eventSubscription = EventSubscriptionEntity.createAndInsert(parentExecution, EventType.COMPENSATE, (ActivityImpl)scope);
eventSubscription.Configuration = compensationScopeExecution.Id;
executionBranch.visited(new MigratingEventScopeInstance(eventSubscription, compensationScopeExecution, scope));
parentExecution = compensationScopeExecution;
}
}
protected internal virtual void createCompensateEventSubscription(ActivityExecution execution, ActivityImpl compensationHandler)
{
// the compensate event subscription is created at subprocess or miBody of the the current activity
PvmActivity currentActivity = execution.Activity;
ActivityExecution scopeExecution = execution.findExecutionForFlowScope(currentActivity.FlowScope);
EventSubscriptionEntity.createAndInsert((ExecutionEntity)scopeExecution, EventType.COMPENSATE, compensationHandler);
}
/// <summary>
/// creates an event scope for the given execution:
///
/// create a new event scope execution under the parent of the given execution
/// and move all event subscriptions to that execution.
///
/// this allows us to "remember" the event subscriptions after finishing a
/// scope
/// </summary>
public static void createEventScopeExecution(ExecutionEntity execution)
{
// parent execution is a subprocess or a miBody
ActivityImpl activity = execution.getActivity();
ExecutionEntity scopeExecution = (ExecutionEntity)execution.findExecutionForFlowScope(activity.FlowScope);
IList <EventSubscriptionEntity> eventSubscriptions = execution.CompensateEventSubscriptions;
if (eventSubscriptions.Count > 0 || hasCompensationEventSubprocess(activity))
{
ExecutionEntity eventScopeExecution = scopeExecution.createExecution();
eventScopeExecution.setActivity(execution.getActivity());
eventScopeExecution.activityInstanceStarting();
eventScopeExecution.enterActivityInstance();
eventScopeExecution.Active = false;
eventScopeExecution.Concurrent = false;
eventScopeExecution.EventScope = true;
// copy local variables to eventScopeExecution by value. This way,
// the eventScopeExecution references a 'snapshot' of the local variables
IDictionary <string, object> variables = execution.VariablesLocal;
foreach (KeyValuePair <string, object> variable in variables.SetOfKeyValuePairs())
{
eventScopeExecution.setVariableLocal(variable.Key, variable.Value);
}
// set event subscriptions to the event scope execution:
foreach (EventSubscriptionEntity eventSubscriptionEntity in eventSubscriptions)
{
EventSubscriptionEntity newSubscription = EventSubscriptionEntity.createAndInsert(eventScopeExecution, EventType.COMPENSATE, eventSubscriptionEntity.Activity);
newSubscription.Configuration = eventSubscriptionEntity.Configuration;
// use the original date
newSubscription.Created = eventSubscriptionEntity.Created;
}
// set existing event scope executions as children of new event scope execution
// (ensuring they don't get removed when 'execution' gets removed)
foreach (PvmExecutionImpl childEventScopeExecution in execution.EventScopeExecutions)
{
childEventScopeExecution.Parent = eventScopeExecution;
}
ActivityImpl compensationHandler = getEventScopeCompensationHandler(execution);
EventSubscriptionEntity eventSubscription = EventSubscriptionEntity.createAndInsert(scopeExecution, EventType.COMPENSATE, compensationHandler);
eventSubscription.Configuration = eventScopeExecution.Id;
}
}