/// <summary>
/// Returns a list of flow scopes from the given scope until a scope is reached that is already present in the given
/// <seealso cref="MigratingScopeInstanceBranch"/> (exclusive). The order of the returned list is top-down, i.e. the highest scope
/// is the first element of the list.
/// </summary>
//JAVA TO C# CONVERTER WARNING: 'final' parameters are not available in .NET:
//ORIGINAL LINE: protected java.util.List<org.camunda.bpm.engine.impl.pvm.process.ScopeImpl> collectNonExistingFlowScopes(org.camunda.bpm.engine.impl.pvm.process.ScopeImpl scope, final MigratingScopeInstanceBranch migratingExecutionBranch)
protected internal virtual IList <ScopeImpl> collectNonExistingFlowScopes(ScopeImpl scope, MigratingScopeInstanceBranch migratingExecutionBranch)
{
FlowScopeWalker walker = new FlowScopeWalker(scope);
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final java.util.List<org.camunda.bpm.engine.impl.pvm.process.ScopeImpl> result = new java.util.LinkedList<org.camunda.bpm.engine.impl.pvm.process.ScopeImpl>();
IList <ScopeImpl> result = new LinkedList <ScopeImpl>();
walker.addPreVisitor(new TreeVisitorAnonymousInnerClass(this, result));
walker.walkWhile(new WalkConditionAnonymousInnerClass(this, migratingExecutionBranch));
return(result);
}
//JAVA TO C# CONVERTER WARNING: 'final' parameters are not available in .NET:
//ORIGINAL LINE: public Void execute(final org.camunda.bpm.engine.impl.interceptor.CommandContext commandContext)
public override Void execute(CommandContext commandContext)
{
ExecutionEntity processInstance = commandContext.ExecutionManager.findExecutionById(processInstanceId);
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final org.camunda.bpm.engine.impl.pvm.process.ProcessDefinitionImpl processDefinition = processInstance.getProcessDefinition();
ProcessDefinitionImpl processDefinition = processInstance.getProcessDefinition();
CoreModelElement elementToInstantiate = getTargetElement(processDefinition);
EnsureUtil.ensureNotNull(typeof(NotValidException), describeFailure("Element '" + TargetElementId + "' does not exist in process '" + processDefinition.Id + "'"), "element", elementToInstantiate);
// rebuild the mapping because the execution tree changes with every iteration
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final org.camunda.bpm.engine.impl.ActivityExecutionTreeMapping mapping = new org.camunda.bpm.engine.impl.ActivityExecutionTreeMapping(commandContext, processInstanceId);
ActivityExecutionTreeMapping mapping = new ActivityExecutionTreeMapping(commandContext, processInstanceId);
// before instantiating an activity, two things have to be determined:
//
// activityStack:
// For the activity to instantiate, we build a stack of parent flow scopes
// for which no executions exist yet and that have to be instantiated
//
// scopeExecution:
// This is typically the execution under which a new sub tree has to be created.
// if an explicit ancestor activity instance is set:
// - this is the scope execution for that ancestor activity instance
// - throws exception if that scope execution is not in the parent hierarchy
// of the activity to be started
// if no explicit ancestor activity instance is set:
// - this is the execution of the first parent/ancestor flow scope that has an execution
// - throws an exception if there is more than one such execution
ScopeImpl targetFlowScope = getTargetFlowScope(processDefinition);
// prepare to walk up the flow scope hierarchy and collect the flow scope activities
ActivityStackCollector stackCollector = new ActivityStackCollector();
FlowScopeWalker walker = new FlowScopeWalker(targetFlowScope);
walker.addPreVisitor(stackCollector);
ExecutionEntity scopeExecution = null;
// if no explicit ancestor activity instance is set
if (string.ReferenceEquals(ancestorActivityInstanceId, null))
{
// walk until a scope is reached for which executions exist
walker.walkWhile(new WalkConditionAnonymousInnerClass(this, processDefinition, mapping));
ISet <ExecutionEntity> flowScopeExecutions = mapping.getExecutions(walker.CurrentElement);
if (flowScopeExecutions.Count > 1)
{
throw new ProcessEngineException("Ancestor activity execution is ambiguous for activity " + targetFlowScope);
}
scopeExecution = flowScopeExecutions.GetEnumerator().next();
}
else
{
ActivityInstance tree = commandContext.runWithoutAuthorization(new CallableAnonymousInnerClass(this, commandContext));
ActivityInstance ancestorInstance = findActivityInstance(tree, ancestorActivityInstanceId);
EnsureUtil.ensureNotNull(typeof(NotValidException), describeFailure("Ancestor activity instance '" + ancestorActivityInstanceId + "' does not exist"), "ancestorInstance", ancestorInstance);
// determine ancestor activity scope execution and activity
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final org.camunda.bpm.engine.impl.persistence.entity.ExecutionEntity ancestorScopeExecution = getScopeExecutionForActivityInstance(processInstance, mapping, ancestorInstance);
ExecutionEntity ancestorScopeExecution = getScopeExecutionForActivityInstance(processInstance, mapping, ancestorInstance);
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final org.camunda.bpm.engine.impl.pvm.PvmScope ancestorScope = getScopeForActivityInstance(processDefinition, ancestorInstance);
PvmScope ancestorScope = getScopeForActivityInstance(processDefinition, ancestorInstance);
// walk until the scope of the ancestor scope execution is reached
walker.walkWhile(new WalkConditionAnonymousInnerClass2(this, processDefinition, mapping, ancestorScopeExecution, ancestorScope));
ISet <ExecutionEntity> flowScopeExecutions = mapping.getExecutions(walker.CurrentElement);
if (!flowScopeExecutions.Contains(ancestorScopeExecution))
{
throw new NotValidException(describeFailure("Scope execution for '" + ancestorActivityInstanceId + "' cannot be found in parent hierarchy of flow element '" + elementToInstantiate.Id + "'"));
}
scopeExecution = ancestorScopeExecution;
}
IList <PvmActivity> activitiesToInstantiate = stackCollector.ActivityStack;
activitiesToInstantiate.Reverse();
// We have to make a distinction between
// - "regular" activities for which the activity stack can be instantiated and started
// right away
// - interrupting or cancelling activities for which we have to ensure that
// the interruption and cancellation takes place before we instantiate the activity stack
ActivityImpl topMostActivity = null;
ScopeImpl flowScope = null;
if (activitiesToInstantiate.Count > 0)
{
topMostActivity = (ActivityImpl)activitiesToInstantiate[0];
flowScope = topMostActivity.FlowScope;
}
else if (elementToInstantiate.GetType().IsAssignableFrom(typeof(ActivityImpl)))
{
topMostActivity = (ActivityImpl)elementToInstantiate;
flowScope = topMostActivity.FlowScope;
}
else if (elementToInstantiate.GetType().IsAssignableFrom(typeof(TransitionImpl)))
{
TransitionImpl transitionToInstantiate = (TransitionImpl)elementToInstantiate;
flowScope = transitionToInstantiate.Source.FlowScope;
}
if (!supportsConcurrentChildInstantiation(flowScope))
{
throw new ProcessEngineException("Concurrent instantiation not possible for " + "activities in scope " + flowScope.Id);
}
ActivityStartBehavior startBehavior = ActivityStartBehavior.CONCURRENT_IN_FLOW_SCOPE;
if (topMostActivity != null)
{
startBehavior = topMostActivity.ActivityStartBehavior;
if (activitiesToInstantiate.Count > 0)
{
// this is in BPMN relevant if there is an interrupting event sub process.
// we have to distinguish between instantiation of the start event and any other activity.
// instantiation of the start event means interrupting behavior; instantiation
// of any other task means no interruption.
PvmActivity initialActivity = topMostActivity.Properties.get(BpmnProperties.INITIAL_ACTIVITY);
PvmActivity secondTopMostActivity = null;
if (activitiesToInstantiate.Count > 1)
{
secondTopMostActivity = activitiesToInstantiate[1];
}
else if (elementToInstantiate.GetType().IsAssignableFrom(typeof(ActivityImpl)))
{
secondTopMostActivity = (PvmActivity)elementToInstantiate;
}
if (initialActivity != secondTopMostActivity)
{
startBehavior = ActivityStartBehavior.CONCURRENT_IN_FLOW_SCOPE;
}
}
}
switch (startBehavior)
{
case ActivityStartBehavior.CANCEL_EVENT_SCOPE:
{
ScopeImpl scopeToCancel = topMostActivity.EventScope;
ExecutionEntity executionToCancel = getSingleExecutionForScope(mapping, scopeToCancel);
if (executionToCancel != null)
{
executionToCancel.deleteCascade("Cancelling activity " + topMostActivity + " executed.", skipCustomListeners, skipIoMappings);
instantiate(executionToCancel.Parent, activitiesToInstantiate, elementToInstantiate);
}
else
{
ExecutionEntity flowScopeExecution = getSingleExecutionForScope(mapping, topMostActivity.FlowScope);
instantiateConcurrent(flowScopeExecution, activitiesToInstantiate, elementToInstantiate);
}
break;
}
case ActivityStartBehavior.INTERRUPT_EVENT_SCOPE:
{
ScopeImpl scopeToCancel = topMostActivity.EventScope;
ExecutionEntity executionToCancel = getSingleExecutionForScope(mapping, scopeToCancel);
executionToCancel.interrupt("Interrupting activity " + topMostActivity + " executed.", skipCustomListeners, skipIoMappings);
executionToCancel.setActivity(null);
executionToCancel.leaveActivityInstance();
instantiate(executionToCancel, activitiesToInstantiate, elementToInstantiate);
break;
}
case ActivityStartBehavior.INTERRUPT_FLOW_SCOPE:
{
ScopeImpl scopeToCancel = topMostActivity.FlowScope;
ExecutionEntity executionToCancel = getSingleExecutionForScope(mapping, scopeToCancel);
executionToCancel.interrupt("Interrupting activity " + topMostActivity + " executed.", skipCustomListeners, skipIoMappings);
executionToCancel.setActivity(null);
executionToCancel.leaveActivityInstance();
instantiate(executionToCancel, activitiesToInstantiate, elementToInstantiate);
break;
}
default:
{
// if all child executions have been cancelled
// or this execution has ended executing its scope, it can be reused
if (!scopeExecution.hasChildren() && (scopeExecution.getActivity() == null || scopeExecution.Ended))
{
// reuse the scope execution
instantiate(scopeExecution, activitiesToInstantiate, elementToInstantiate);
}
else
{
// if the activity is not cancelling/interrupting, it can simply be instantiated as
// a concurrent child of the scopeExecution
instantiateConcurrent(scopeExecution, activitiesToInstantiate, elementToInstantiate);
}
break;
}
}
return(null);
}