WF4.0 Beta1 持久化(SqlPersistenceProviderFactory)

WF4.0 Beta1 持久化 (SqlPersistenceProviderFactory)

SqlPersistenceProviderFactory与PersistenceProvider

名称空间: System.ServiceModel.Persistence

类文件: System.WorkflowServices.dll

数据库脚本: [\Windows\Microsoft.NET\Framework\v4.0.20506\SQL\en] 目录中

功能类

public class wfTools

{

//System.ServiceModel.Persistence

//System.WorkflowServices.dll

static SqlPersistenceProviderFactory persistenceProviderFactory;

 

public static void openPersistence()

{

persistenceProviderFactory =new SqlPersistenceProviderFactory

(

@"Data Source=.\SQLEXPRESS;AttachDbFilename=c:\persistence.mdf;Integrated Security=True",

false,

false,

TimeSpan.FromSeconds(60)

);

persistenceProviderFactory.Open();

}

 

public static void closePersistence()

{

persistenceProviderFactory.Close();

}

 

public static WorkflowInstance createWorkflow(WorkflowElement workflow, Guid id)

{

 

WorkflowInstance instance = new WorkflowInstance(workflow, id);

 

bindingInstanceEvent(instance);

 

PersistenceProvider pp = persistenceProviderFactory.CreateProvider(id);

instance.Extensions.Add(pp);

 

return instance;

}

 

 

public static WorkflowInstance loadWorkflow(WorkflowElement workflow, Guid id)

{

PersistenceProvider pp = persistenceProviderFactory.CreateProvider(id);

WorkflowInstance instance = WorkflowInstance.Load(workflow, pp);

bindingInstanceEvent(instance);

return instance;

}

 

 

static void bindingInstanceEvent(WorkflowInstance instance)

{

 

instance.OnIdle = idel;

instance.OnUnloaded = unloaded;

instance.OnUnhandledException = unhandledException;

instance.OnCompleted = completed;

}

 

 

 

static void unloaded()

{

System.Console.WriteLine("unloaded");

}

 

static IdleAction idel()

{

System.Console.WriteLine("idel");

return IdleAction.Unload;

}

 

static void completed(WorkflowCompletedEventArgs e)

{

System.Console.WriteLine("completed");

}

 

static void aborted(WorkflowAbortedEventArgs e)

{

System.Console.WriteLine("aborted", e.Reason.Message);

}

 

static UnhandledExceptionAction unhandledException(WorkflowUnhandledExceptionEventArgs e)

{

System.Console.WriteLine("unhandledException{0}", e.UnhandledException.Message);

 

return UnhandledExceptionAction.Abort;

}

 

}

 

例子流程

等待触发	public class myBookmark : NativeActivity { public string bookmarkName { get; set; } protected override void Execute(ActivityExecutionContext context) { context.CreateNamedBookmark(bookmarkName); } }
流程

 

 

使用

第一组代码	Guid id = new Guid("DB35221A-C901-46F7-8075-E65A8D97FE13"); wfTools.openPersistence();   WorkflowInstance myInstance = wfTools.createWorkflow(new Sequence1(), id); myInstance.Run();   System.Console.Read();
第二组代码	Guid id = new Guid("DB35221A-C901-46F7-8075-E65A8D97FE13"); wfTools.openPersistence();   WorkflowInstance myInstance = wfTools.loadWorkflow(new Sequence1(), id); myInstance.ResumeBookmark("wxd", null);   System.Console.Read();