/// <summary>
/// 克隆一个实例
/// </summary>
/// <param name="WfRuntimeClone"></param>
/// <param name="instanceClone"></param>
/// <param name="WfRuntime"></param>
/// <returns></returns>
public static WorkflowInstance CloneWorkflowInstance(WorkflowRuntime WfRuntimeClone, WorkflowInstance instanceClone, WorkflowRuntime WfRuntime)
{
try
{
if (!WfRuntimeClone.IsStarted)
{
WfRuntimeClone.StartRuntime();
}
StateMachineWorkflowInstance workflowinstance = new StateMachineWorkflowInstance(WfRuntimeClone, instanceClone.InstanceId);
System.Workflow.Activities.StateMachineWorkflowActivity smworkflow = new StateMachineWorkflowActivity();
smworkflow = workflowinstance.StateMachineWorkflow;
RuleDefinitions ruleDefinitions = smworkflow.GetValue(RuleDefinitions.RuleDefinitionsProperty) as RuleDefinitions;
WorkflowMarkupSerializer markupSerializer = new WorkflowMarkupSerializer();
StringBuilder xoml = new StringBuilder();
StringBuilder rule = new StringBuilder();
XmlWriter xmlWriter = XmlWriter.Create(xoml);
XmlWriter ruleWriter = XmlWriter.Create(rule);
markupSerializer.Serialize(xmlWriter, smworkflow);
if (ruleDefinitions != null)
{
markupSerializer.Serialize(ruleWriter, ruleDefinitions);
}
xmlWriter.Close();
ruleWriter.Close();
StringReader readxoml = new StringReader(xoml.ToString());
XmlReader readerxoml = XmlReader.Create(readxoml);
WorkflowInstance instance;
if (ruleDefinitions == null)
{
instance = WfRuntime.CreateWorkflow(readerxoml);
}
else
{
StringReader readrule = new StringReader(rule.ToString());
XmlReader readerrule = XmlReader.Create(readrule);
instance = WfRuntime.CreateWorkflow(readerxoml, readerrule, null);
}
instance.Start();
return(instance);
}
catch (Exception ex)
{
LogHelper.WriteLog("CloneWorkflowInstance异常信息 ：" + ex.ToString());
throw new Exception(ex.Message);
}
}
void ShowHardCauda(object activity)
{
if (activity is StateMachineWorkflowActivity)
{
StateMachineWorkflowActivity sa = activity as StateMachineWorkflowActivity;
var v1 = ElementList.Single(p => p.Name == sa.InitialStateName);
v1.类型 = "头";
var v2 = ElementList.Single(p => p.Name == sa.CompletedStateName);
v2.类型 = "尾";
var v3 = ElementList.Single(p => p.Name == "归档状态");
v3.类型 = "归档";
}
}
public static DataTable GetChildActivityList(WorkflowDescription wfDescription, object activity)
{
DataTable dt = new DataTable();
dt.Locale = CultureInfo.InvariantCulture;
dt.Columns.Add("Id", typeof(string));
dt.Columns.Add("Number", typeof(int));
dt.Columns.Add("Subject", typeof(string));
dt.Columns.Add("User", typeof(int));
dt.Columns.Add("DueDate", typeof(DateTime));
dt.Columns.Add("State", typeof(ActivityStatus));
dt.Columns.Add("IsBlock", typeof(bool));
dt.Columns.Add("ReadOnlyLibraryAccess", typeof(bool));
if (activity is SequentialWorkflowActivity)
{
SequentialWorkflowActivity block = (SequentialWorkflowActivity)activity;
foreach (Activity child in block.Activities)
{
ProcessChildActivity(wfDescription, child, dt);
}
}
else if (activity is StateMachineWorkflowActivity)
{
StateMachineWorkflowActivity block = (StateMachineWorkflowActivity)activity;
foreach (Activity child in block.Activities)
{
ProcessChildActivity(wfDescription, child, dt);
}
}
else if (activity is BlockActivity)
{
BlockActivity block = (BlockActivity)activity;
foreach (Activity child in block.Activities)
{
ProcessChildActivity(wfDescription, child, dt);
}
}
return(dt);
}
private static void ProcessActivity(WorkflowDescription wfDescription, Activity activity, DataTable dt, int level)
{
DataRow row = dt.NewRow();
row["Id"] = activity.QualifiedName;
row["Number"] = dt.Rows.Count + 1;
if (activity is SequentialWorkflowActivity)
{
row["Subject"] = wfDescription.Name;
row["IsBlock"] = true;
}
else if (activity is StateMachineWorkflowActivity)
{
row["Subject"] = wfDescription.Name;
row["IsBlock"] = true;
}
else if (activity is BlockActivity)
{
if (((BlockActivity)activity).Type == BlockActivityType.All)
{
row["Subject"] = "{IbnFramework.BusinessProcess:BlockActivityTypeAll}";
}
else
{
row["Subject"] = "{IbnFramework.BusinessProcess:BlockActivityTypeAny}";
}
row["IsBlock"] = true;
}
else if (activity is CreateAssignmentAndWaitResultActivity)
{
PropertyValueCollection properties = ((CreateAssignmentAndWaitResultActivity)activity).AssignmentProperties;
row["Subject"] = properties[AssignmentEntity.FieldSubject].ToString();
row["User"] = (int)properties[AssignmentEntity.FieldUserId];
if (properties[AssignmentEntity.FieldPlanFinishDate] != null)
{
row["DueDate"] = (DateTime)properties[AssignmentEntity.FieldPlanFinishDate];
}
row["IsBlock"] = false;
}
if (row["Subject"] == DBNull.Value)
{
row["Subject"] = "{IbnFramework.BusinessProcess:NoSubject}";
}
row["State"] = GetActivityStatus(wfDescription, activity);
row["Level"] = level;
dt.Rows.Add(row);
level++;
if (activity is SequentialWorkflowActivity)
{
SequentialWorkflowActivity block = (SequentialWorkflowActivity)activity;
foreach (Activity child in block.Activities)
{
ProcessActivity(wfDescription, child, dt, level);
}
}
else if (activity is StateMachineWorkflowActivity)
{
StateMachineWorkflowActivity block = (StateMachineWorkflowActivity)activity;
foreach (Activity child in block.Activities)
{
ProcessActivity(wfDescription, child, dt, level);
}
}
else if (activity is BlockActivity)
{
BlockActivity block = (BlockActivity)activity;
foreach (Activity child in block.Activities)
{
ProcessActivity(wfDescription, child, dt, level);
}
}
}
// Workflow processor
internal static void RunWorkflow(Object stateInfo)
{
Stack <Activity> stack = new Stack <Activity> ();
WorkflowInstance wi = WorkflowRuntime.GetInstanceFromGuid((Guid)stateInfo);
wi.timer_subscriptions = new Timer(TimerSubscriptionsCallback, wi, 0, 1000);
Activity activity = wi.GetWorkflowDefinition();
Activity next_activity;
ActivityExecutionContextManager manager = new ActivityExecutionContextManager(wi);
ActivityExecutionContext context;
List <DelayActivity> waiting = new List <DelayActivity> ();
bool wait = false;
StateMachineWorkflowActivity state_machine = null;
#if DEBUG_EXECUTIONLOOP
Console.WriteLine("Initiating thread for activity {0}", wi.GetWorkflowDefinition());
#endif
context = manager.CreateExecutionContext(activity);
// Main Workflow execution loop
while (activity != null)
{
next_activity = null;
if (activity.NeedsExecution)
{
#if DEBUG_EXECUTIONLOOP
Console.WriteLine("*** Executing {0}, parallel {1}", activity, activity.ParallelParent);
#endif
context.ExecuteActivity(activity);
}
// If this a state machine changing its statge update StateMachineWorkflowActivity
if (state_machine != null && IsBasedOnType(activity, typeof(SetStateActivity)))
{
state_machine.SetCurrentStateName(((SetStateActivity)activity).TargetStateName);
}
#if DEBUG_EXECUTIONLOOP
Console.WriteLine(" ActivitiesToExecute.Count {0}, stack {1}, waiting {2}",
activity.ActivitiesToExecute.Count, stack.Count, waiting.Count);
#endif
wait = false;
// State machine workflow, first activity is InitialStateName
if (IsBasedOnType(activity, typeof(StateMachineWorkflowActivity)))
{
state_machine = (StateMachineWorkflowActivity)activity;
stack.Push(activity.GetActivityByName(state_machine.InitialStateName));
state_machine.SetCurrentStateName(state_machine.InitialStateName);
#if DEBUG_EXECUTIONLOOP
Console.WriteLine(" StateMachineWorkflowActivity, pushing {0}",
activity.GetActivityByName(sm.InitialStateName));
#endif
}
// TODO: if (IsBasedOnType (current, typeof (CompositeActivity))) {
if (activity.GetType() == typeof(DelayActivity))
{
if (activity.ParallelParent == null)
{
wi.WorkflowRuntime.OnWorkflowIdled(wi);
waiting.Add((DelayActivity)activity);
wait = true;
}
else
{
// Continue from parent activities
// TODO: This can be moved to the Execute method
// of the paralell activity
if (activity.ParallelParent.ActivitiesToExecute.Count > 0)
{
stack.Push(activity.ParallelParent);
#if DEBUG_EXECUTIONLOOP
Console.WriteLine("Pushing parent {0}", activity.ParallelParent);
#endif
waiting.Add((DelayActivity)activity);
}
else // If not possible, wait for the delay
{
#if DEBUG_EXECUTIONLOOP
Console.WriteLine("Schedule Waiting");
#endif
waiting.Add((DelayActivity)activity);
wait = true;
}
}
}
if (activity.NeedsExecution) // ex. While
{
stack.Push(activity);
}
if (activity.ActivitiesToExecute.Count == 0 && stack.Count == 0 && waiting.Count == 0)
{
#if DEBUG_EXECUTIONLOOP
Console.WriteLine("Exiting...");
#endif
break;
}
// Does it have sub-activities to run?
// Delay is not composite, cannot have children activities
if (wait == false)
{
if (activity.ActivitiesToExecute.Count > 0)
{
next_activity = activity.ActivitiesToExecute.Dequeue();
#if DEBUG_EXECUTIONLOOP
Console.WriteLine("Next Activity A {0}", next_activity);
#endif
if (activity.ActivitiesToExecute.Count > 0)
{
stack.Push(activity);
}
}
else
{
if (stack.Count > 0)
{
next_activity = stack.Pop();
}
if (next_activity != null && next_activity.NeedsExecution == false)
{
if (next_activity.ActivitiesToExecute.Count > 0)
{
next_activity = next_activity.ActivitiesToExecute.Dequeue();
}
}
#if DEBUG_EXECUTIONLOOP
Console.WriteLine("Next Activity B {0}", next_activity);
#endif
}
}
if (next_activity == null)
{
if (waiting.Count > 0)
{
#if DEBUG_EXECUTIONLOOP
Console.WriteLine("Waiting for {0} handles...", waiting.Count);
#endif
wi.WorkflowRuntime.OnWorkflowIdled(wi);
DelayActivity.WaitEvent.WaitOne();
}
}
// Do we have delay activities no longer waiting?
foreach (DelayActivity delay in waiting)
{
if (delay.Delayed == false)
{
bool flag = false;
// Continue with the list of activities pending in the parent
next_activity = delay.Parent;
waiting.Remove(delay);
#if DEBUG_EXECUTIONLOOP
Console.WriteLine("Delayed Parent {0}", next_activity);
#endif
if (next_activity.ActivitiesToExecute.Count > 0)
{
if (next_activity.ActivitiesToExecute.Count > 1)
{
flag = true;
}
if (next_activity != null)
{
next_activity = next_activity.ActivitiesToExecute.Dequeue();
if (flag == true)
{
stack.Push(delay.Parent);
}
}
}
break;
}
}
#if DEBUG_EXECUTIONLOOP
Console.WriteLine("Next activity to process {0}", next_activity);
#endif
activity = next_activity;
}
wi.WorkflowRuntime.OnWorkflowCompleted(wi);
}
