/// <summary>
/// 插入方法
/// </summary>
/// <param name="conn">数据库连接</param>
/// <param name="entity">实体</param>
/// <param name="trans">事务</param>
internal void Insert(IDbConnection conn,
TransitionInstanceEntity entity,
IDbTransaction trans)
{
int newID = Repository.Insert(conn, entity, trans);
entity.ID = newID;
}
/// <summary>
/// 插入方法
/// </summary>
/// <param name="entity">实体</param>
/// <param name="session">会话</param>
/// <returns>新实例ID</returns>
internal int Insert(TransitionInstanceEntity entity,
IDbSession session)
{
var repository = session.GetRepository <TransitionInstanceEntity>();
var newEntity = repository.Insert(entity);
session.SaveChanges();
return(newEntity.ID);
}
internal void Insert(IDbConnection conn,
TransitionInstanceEntity entity,
IDbTransaction trans)
{
int newID = Repository.Insert(conn, entity, trans);
entity.ID = newID;
Debug.WriteLine(string.Format("transition instance inserted, time:{0}", System.DateTime.Now.ToString()));
}
/// <summary>
/// 创建转移实例数据
/// </summary>
/// <param name="processInstance">流程实例</param>
/// <param name="transitionGUID">转移GUID</param>
/// <param name="fromActivityInstance">来源活动实例</param>
/// <param name="toActivityInstance">目的活动实例</param>
/// <param name="transitionType">转移类型</param>
/// <param name="flyingType">飞越类型</param>
/// <param name="runner">执行者</param>
/// <param name="conditionParseResult">条件解析结果</param>
/// <returns>转移实例</returns>
internal TransitionInstanceEntity CreateTransitionInstanceObject(ProcessInstanceEntity processInstance,
String transitionGUID,
ActivityInstanceEntity fromActivityInstance,
ActivityInstanceEntity toActivityInstance,
TransitionTypeEnum transitionType,
TransitionFlyingTypeEnum flyingType,
WfAppRunner runner,
byte conditionParseResult)
{
var entity = new TransitionInstanceEntity();
entity.AppName = processInstance.AppName;
entity.AppInstanceID = processInstance.AppInstanceID;
entity.ProcessGUID = processInstance.ProcessGUID;
entity.ProcessInstanceID = processInstance.ID;
entity.TransitionGUID = transitionGUID;
entity.TransitionType = (byte)transitionType;
entity.FlyingType = (byte)flyingType;
//构造活动节点数据
entity.FromActivityGUID = fromActivityInstance.ActivityGUID;
entity.FromActivityInstanceID = fromActivityInstance.ID;
entity.FromActivityType = fromActivityInstance.ActivityType;
entity.FromActivityName = fromActivityInstance.ActivityName;
entity.ToActivityGUID = toActivityInstance.ActivityGUID;
entity.ToActivityInstanceID = toActivityInstance.ID;
entity.ToActivityType = toActivityInstance.ActivityType;
entity.ToActivityName = toActivityInstance.ActivityName;
entity.ConditionParseResult = conditionParseResult;
entity.CreatedByUserID = runner.UserID;
entity.CreatedByUserName = runner.UserName;
entity.CreatedDateTime = System.DateTime.Now;
return(entity);
}
/// <summary>
/// 根据不同退回场景创建运行时管理器
/// </summary>
/// <param name="runningActivityInstanceList">运行节点列表</param>
/// <param name="sendbackOperation">退回类型</param>
/// <param name="runner">执行者</param>
/// <param name="result">结果对象</param>
/// <returns>运行时管理器</returns>
private static WfRuntimeManager CreateRuntimeInstanceSendbackByCase(
List <ActivityInstanceEntity> runningActivityInstanceList,
SendbackOperationTypeEnum sendbackOperation,
WfAppRunner runner,
ref WfExecutedResult result)
{
WfRuntimeManager rmins = new WfRuntimeManagerSendBack();
rmins.WfExecutedResult = result = new WfExecutedResult();
ActivityInstanceEntity runningNode = runningActivityInstanceList.Where(x => x.ActivityState == (int)ActivityStateEnum.Running).OrderBy(x => x.ID).FirstOrDefault();
if (runningNode == null)
{
runningNode = runningActivityInstanceList[0];
}
ProcessInstanceEntity processInstance = (new ProcessInstanceManager()).GetById(runningNode.ProcessInstanceID);
IProcessModel processModel = ProcessModelFactory.Create(processInstance.ProcessGUID, processInstance.Version);
var aim = new ActivityInstanceManager();
//以下处理，需要知道上一步是独立节点的信息
//获取上一步流转节点信息，可能经过And, Or等路由节点
var tim = new TransitionInstanceManager();
bool hasGatewayNode = false;
var currentNode = runningNode;
var lastActivityInstanceList = tim.GetPreviousActivityInstance(currentNode, true, out hasGatewayNode).ToList();
if (lastActivityInstanceList == null || lastActivityInstanceList.Count == 0 || lastActivityInstanceList.Count > 1)
{
result.Status = WfExecutedStatus.Exception;
result.ExceptionType = WfExceptionType.Sendback_NullOrHasTooMany;
result.Message = "当前没有可以退回的节点，或者有多个可以退回的节点，无法选择！";
return(rmins);
}
TransitionInstanceEntity lastTaskTransitionInstance = tim.GetLastTaskTransition(runner.AppName,
runner.AppInstanceID, runner.ProcessGUID);
if (lastTaskTransitionInstance.TransitionType == (short)TransitionTypeEnum.Loop)
{
result.Status = WfExecutedStatus.Exception;
result.ExceptionType = WfExceptionType.Sendback_IsLoopNode;
result.Message = "当前流转是自循环，无需退回！";
return(rmins);
}
//设置退回节点的相关信息
var previousActivityInstance = lastActivityInstanceList[0];
if (previousActivityInstance.ActivityType == (short)ActivityTypeEnum.StartNode)
{
result.Status = WfExecutedStatus.Exception;
result.ExceptionType = WfExceptionType.Sendback_PreviousIsStartNode;
result.Message = "上一步是开始节点，无需退回！";
return(rmins);
}
if (sendbackOperation == SendbackOperationTypeEnum.Normal)
{
//简单串行模式下的退回
rmins = new WfRuntimeManagerSendBack();
rmins.WfExecutedResult = result = new WfExecutedResult();
rmins.ProcessModel = processModel;
rmins.BackwardContext.ProcessInstance = processInstance;
rmins.BackwardContext.BackwardToTaskActivity = processModel.GetActivity(previousActivityInstance.ActivityGUID);
rmins.BackwardContext.BackwardToTaskActivityInstance = previousActivityInstance;
rmins.BackwardContext.BackwardToTargetTransitionGUID =
hasGatewayNode == false ? lastTaskTransitionInstance.TransitionGUID : String.Empty; //如果中间有Gateway节点，则没有直接相连的TransitonGUID
rmins.BackwardContext.BackwardFromActivity = processModel.GetActivity(runningNode.ActivityGUID);
rmins.BackwardContext.BackwardFromActivityInstance = runningNode;
rmins.BackwardContext.BackwardTaskReceiver = WfBackwardTaskReceiver.Instance(previousActivityInstance.ActivityName,
previousActivityInstance.EndedByUserID, previousActivityInstance.EndedByUserName);
//封装AppUser对象
rmins.AppRunner.AppName = runner.AppName;
rmins.AppRunner.AppInstanceID = runner.AppInstanceID;
rmins.AppRunner.ProcessGUID = runner.ProcessGUID;
rmins.AppRunner.UserID = runner.UserID;
rmins.AppRunner.UserName = runner.UserName;
rmins.AppRunner.NextActivityPerformers = ActivityResource.CreateNextActivityPerformers(previousActivityInstance.ActivityGUID,
previousActivityInstance.EndedByUserID,
previousActivityInstance.EndedByUserName);
rmins.ActivityResource = new ActivityResource(runner, rmins.AppRunner.NextActivityPerformers);
return(rmins);
}
//如果有其它模式，没有处理到，则直接抛出异常
throw new WorkflowException("未知的退回场景，请报告给技术支持人员！");
}
/// <summary>
/// 根据不同撤销场景创建运行时管理器
/// </summary>
/// <param name="runningActivityInstanceList">运行节点列表</param>
/// <param name="withdrawOperation">撤销类型</param>
/// <param name="runner">执行者</param>
/// <param name="result">结果对象</param>
/// <returns>运行时管理器</returns>
private static WfRuntimeManager CreateRuntimeInstanceWithdrawByCase(
List <ActivityInstanceEntity> runningActivityInstanceList,
WithdrawOperationTypeEnum withdrawOperation,
WfAppRunner runner,
ref WfExecutedResult result)
{
WfRuntimeManager rmins = new WfRuntimeManagerWithdraw();
rmins.WfExecutedResult = result = new WfExecutedResult();
//根据当前运行节点获取
ActivityInstanceEntity runningNode = runningActivityInstanceList[0];
ProcessInstanceEntity processInstance = (new ProcessInstanceManager()).GetById(runningNode.ProcessInstanceID);
IProcessModel processModel = ProcessModelFactory.Create(processInstance.ProcessGUID, processInstance.Version);
//不同撤销的分支场景处理
var aim = new ActivityInstanceManager();
//以下处理，需要知道上一步是独立节点的信息
//获取上一步流转节点信息，可能经过And, Or等路由节点
var tim = new TransitionInstanceManager();
bool hasGatewayNode = false;
var currentNode = runningNode;
if (runningNode.MIHostActivityInstanceID != null)
{
//如果当前运行节点是多实例子节点，则需要找到它的主节点的Transiton记录
currentNode = aim.GetById(runningNode.MIHostActivityInstanceID.Value);
}
var lastActivityInstanceList = tim.GetPreviousActivityInstance(currentNode, false, out hasGatewayNode).ToList();
if (lastActivityInstanceList == null || lastActivityInstanceList.Count > 1)
{
result.Status = WfExecutedStatus.Exception;
result.ExceptionType = WfExceptionType.Withdraw_HasTooMany;
result.Message = "当前没有可以撤销回去的节点，或者有多个可以撤销回去的节点，无法选择！";
return(rmins);
}
TransitionInstanceEntity lastTaskTransitionInstance = null;
if (hasGatewayNode == false)
{
lastTaskTransitionInstance = tim.GetLastTaskTransition(runner.AppName,
runner.AppInstanceID, runner.ProcessGUID);
if (lastTaskTransitionInstance.TransitionType == (short)TransitionTypeEnum.Loop)
{
result.Status = WfExecutedStatus.Exception;
result.ExceptionType = WfExceptionType.Withdraw_IsLoopNode;
result.Message = "当前流转是自循环，无需撤销！";
return(rmins);
}
}
var previousActivityInstance = lastActivityInstanceList[0];
if (previousActivityInstance.EndedByUserID != runner.UserID)
{
result.Status = WfExecutedStatus.Exception;
result.ExceptionType = WfExceptionType.Withdraw_NotCreatedByMine;
result.Message = string.Format("上一步节点的任务办理人跟当前登录用户不一致，无法撤销回上一步！节点办理人：{0}",
previousActivityInstance.EndedByUserName);
return(rmins);
}
if (previousActivityInstance.ActivityType == (short)ActivityTypeEnum.EndNode)
{
result.Status = WfExecutedStatus.Exception;
result.ExceptionType = WfExceptionType.Withdraw_PreviousIsEndNode;
result.Message = "上一步是结束节点，无法撤销！";
return(rmins);
}
//当前运行节点是普通节点
if (withdrawOperation == WithdrawOperationTypeEnum.Normal)
{
//简单串行模式下的退回
rmins = new WfRuntimeManagerWithdraw();
rmins.WfExecutedResult = result = new WfExecutedResult();
rmins.ProcessModel = processModel;
rmins.AppRunner.ProcessGUID = runner.ProcessGUID;
rmins.BackwardContext.ProcessInstance = processInstance;
rmins.BackwardContext.BackwardToTargetTransitionGUID =
hasGatewayNode == false ? lastTaskTransitionInstance.TransitionGUID : String.Empty;
rmins.BackwardContext.BackwardToTaskActivity = processModel.GetActivity(previousActivityInstance.ActivityGUID);
rmins.BackwardContext.BackwardToTaskActivityInstance = previousActivityInstance;
rmins.BackwardContext.BackwardFromActivity = processModel.GetActivity(runningNode.ActivityGUID);
rmins.BackwardContext.BackwardFromActivityInstance = runningNode; //准备状态的接收节点
rmins.BackwardContext.BackwardTaskReceiver = WfBackwardTaskReceiver.Instance(
previousActivityInstance.ActivityName,
previousActivityInstance.EndedByUserID,
previousActivityInstance.EndedByUserName);
//封装AppUser对象
rmins.AppRunner.AppName = runner.AppName;
rmins.AppRunner.AppInstanceID = runner.AppInstanceID;
rmins.AppRunner.UserID = runner.UserID;
rmins.AppRunner.UserName = runner.UserName;
rmins.AppRunner.NextActivityPerformers = ActivityResource.CreateNextActivityPerformers(
previousActivityInstance.ActivityGUID,
runner.UserID,
runner.UserName);
rmins.ActivityResource = new ActivityResource(runner, rmins.AppRunner.NextActivityPerformers);
return(rmins);
}
//如果有其它模式，没有处理到，则直接抛出异常
throw new WorkflowException("未知的撤销场景，请报告给技术支持人员！");
}
private static WfRuntimeManager CreateRuntimeInstanceSendbackByCase(ActivityInstanceEntity runningNode,
IProcessModel processModel,
ProcessInstanceEntity processInstance,
IList <ActivityEntity> sendbackPreviousActivityList,
Boolean hasGatewayPassed,
SendbackOperationTypeEnum sendbackOperation,
WfAppRunner runner,
ref WfExecutedResult result)
{
WfRuntimeManager rmins = new WfRuntimeManagerSendBack();
rmins.WfExecutedResult = result = new WfExecutedResult();
var aim = new ActivityInstanceManager();
//以下处理，需要知道上一步是独立节点的信息
var tim = new TransitionInstanceManager();
TransitionInstanceEntity lastTaskTransitionInstance = tim.GetLastTaskTransition(runner.AppName,
runner.AppInstanceID, runner.ProcessGUID);
if (lastTaskTransitionInstance.TransitionType == (short)TransitionTypeEnum.Loop)
{
result.Status = WfExecutedStatus.Exception;
result.ExceptionType = WfExceptionType.Sendback_IsLoopNode;
result.Message = "当前流转是自循环，无需退回！";
return(rmins);
}
//设置退回节点的相关信息
var previousActivityGUID = sendbackPreviousActivityList[0].ActivityGUID;
var previousActivityInstance = aim.GetActivityInstanceLatest(runner.AppInstanceID, runner.ProcessGUID, previousActivityGUID);
//普通模式的退回
if (sendbackOperation == SendbackOperationTypeEnum.Normal)
{
//简单串行模式下的退回
rmins = new WfRuntimeManagerSendBack();
rmins.WfExecutedResult = result = new WfExecutedResult();
rmins.ProcessModel = processModel;
rmins.BackwardContext.ProcessInstance = processInstance;
rmins.BackwardContext.BackwardToTaskActivity = processModel.GetActivity(previousActivityInstance.ActivityGUID);
rmins.BackwardContext.BackwardToTaskActivityInstance = previousActivityInstance;
rmins.BackwardContext.BackwardToTargetTransitionGUID =
hasGatewayPassed == false ? lastTaskTransitionInstance.TransitionGUID : WfDefine.WF_XPDL_GATEWAY_BYPASS_GUID; //如果中间有Gateway节点，则没有直接相连的TransitonGUID
rmins.BackwardContext.BackwardFromActivity = processModel.GetActivity(runningNode.ActivityGUID);
rmins.BackwardContext.BackwardFromActivityInstance = runningNode;
rmins.BackwardContext.BackwardTaskReceiver = WfBackwardTaskReceiver.Instance(previousActivityInstance.ActivityName,
previousActivityInstance.EndedByUserID, previousActivityInstance.EndedByUserName);
//封装AppUser对象
rmins.AppRunner.AppName = runner.AppName;
rmins.AppRunner.AppInstanceID = runner.AppInstanceID;
rmins.AppRunner.ProcessGUID = runner.ProcessGUID;
rmins.AppRunner.UserID = runner.UserID;
rmins.AppRunner.UserName = runner.UserName;
rmins.AppRunner.NextActivityPerformers = ActivityResource.CreateNextActivityPerformers(previousActivityInstance.ActivityGUID,
previousActivityInstance.EndedByUserID,
previousActivityInstance.EndedByUserName);
rmins.ActivityResource = new ActivityResource(runner, rmins.AppRunner.NextActivityPerformers);
return(rmins);
}
//如果有其它模式，没有处理到，则直接抛出异常
throw new WorkflowException("未知的退回场景，请报告给技术支持人员！");
}
/// <summary>
/// 撤销操作
/// </summary>
/// <param name="appName"></param>
/// <param name="appInstanceID"></param>
/// <param name="processGUID"></param>
/// <param name="userID"></param>
/// <param name="userName"></param>
/// <param name="result"></param>
/// <returns></returns>
public static WfRuntimeManager CreateRuntimeInstanceWithdraw(WfAppRunner runner,
ref WfExecutedResult result)
{
//获取当前运行节点信息
var rmins = new WfRuntimeManagerWithdraw();
rmins.WfExecutedResult = result = new WfExecutedResult();
var aim = new ActivityInstanceManager();
var runningNode = aim.GetRunningNodeOfMine(runner);
if ((runningNode == null) || (runningNode.ActivityState != (short)ActivityStateEnum.Ready))
{
result.Status = WfExecutedStatus.Exception;
result.ExceptionType = WfExceptionType.Withdraw_NotInReady;
result.Message = string.Format("要撤销的节点不在【待办】状态，已经无法撤销到上一步，节点状态：{0}",
runningNode.ActivityState);
}
//获取上一步流转节点信息，可能经过And, Or等路由节点
var tim = new TransitionInstanceManager();
bool hasGatewayNode = false;
var lastActivityInstanceList = tim.GetPreviousActivityInstance(runningNode, false, out hasGatewayNode).ToList();
if (lastActivityInstanceList == null || lastActivityInstanceList.Count > 1)
{
result.Status = WfExecutedStatus.Exception;
result.ExceptionType = WfExceptionType.Withdraw_HasTooMany;
result.Message = "当前没有可以撤销回去的节点，或者有多个可以撤销回去的节点，无法选择！";
return(rmins);
}
TransitionInstanceEntity lastTaskTransitionInstance = null;
if (hasGatewayNode == false)
{
lastTaskTransitionInstance = tim.GetLastTaskTransition(runner.AppName,
runner.AppInstanceID, runner.ProcessGUID);
}
var withdrawActivityInstance = lastActivityInstanceList[0];
if (withdrawActivityInstance.EndedByUserID != runner.UserID)
{
result.Status = WfExecutedStatus.Exception;
result.ExceptionType = WfExceptionType.Withdraw_NotCreatedByMine;
result.Message = string.Format("上一步节点的任务办理人跟当前登录用户不一致，无法撤销回上一步！节点办理人：{0}",
withdrawActivityInstance.EndedByUserName);
return(rmins);
}
if (withdrawActivityInstance.ActivityType == (short)ActivityTypeEnum.EndNode)
{
result.Status = WfExecutedStatus.Exception;
result.ExceptionType = WfExceptionType.Withdraw_PreviousIsEndNode;
result.Message = "上一步是结束节点，无法撤销！";
return(rmins);
}
//准备撤销节点的相关信息
var processModel = (new ProcessModel(runner.ProcessGUID));
rmins.ProcessModel = processModel;
rmins.AppRunner.ProcessGUID = runner.ProcessGUID;
rmins.BackwardContext.ProcessInstance = (new ProcessInstanceManager()).GetById(runningNode.ProcessInstanceID);
rmins.BackwardContext.BackwardToTargetTransitionGUID =
hasGatewayNode == false ? lastTaskTransitionInstance.TransitionGUID : String.Empty;
rmins.BackwardContext.BackwardToTaskActivity = processModel.GetActivity(withdrawActivityInstance.ActivityGUID);
rmins.BackwardContext.BackwardToTaskActivityInstance = withdrawActivityInstance;
rmins.BackwardContext.BackwardFromActivity = processModel.GetActivity(runningNode.ActivityGUID);
rmins.BackwardContext.BackwardFromActivityInstance = runningNode; //准备状态的接收节点
rmins.BackwardContext.BackwardTaskReciever = WfBackwardTaskReciever.Instance(
withdrawActivityInstance.ActivityName,
withdrawActivityInstance.EndedByUserID,
withdrawActivityInstance.EndedByUserName);
//封装AppUser对象
rmins.AppRunner.AppName = runner.AppName;
rmins.AppRunner.AppInstanceID = runner.AppInstanceID;
rmins.AppRunner.UserID = runner.UserID;
rmins.AppRunner.UserName = runner.UserName;
rmins.AppRunner.NextActivityPerformers = ActivityResource.CreateNextActivityPerformers(
withdrawActivityInstance.ActivityGUID,
runner.UserID,
runner.UserName);
rmins.ActivityResource = new ActivityResource(runner, rmins.AppRunner.NextActivityPerformers);
return(rmins);
}
/// <summary>
/// 撤销操作
/// 包括：
/// 1) 正常流转
/// 2) 多实例节点流转
/// </summary>
/// <param name="appName"></param>
/// <param name="appInstanceID"></param>
/// <param name="processGUID"></param>
/// <param name="userID"></param>
/// <param name="userName"></param>
/// <param name="result"></param>
/// <returns></returns>
public static WfRuntimeManager CreateRuntimeInstanceWithdraw(WfAppRunner runner,
ref WfExecutedResult result)
{
WfRuntimeManager rmins = null;
//获取当前运行节点信息
var aim = new ActivityInstanceManager();
var runningNode = aim.GetRunningNode(runner);
var processInstance = (new ProcessInstanceManager()).GetById(runningNode.ProcessInstanceID);
var processModel = (new ProcessModel(processInstance.ProcessGUID, processInstance.Version));
if ((runningNode == null) || (runningNode.ActivityState != (short)ActivityStateEnum.Ready))
{
result.Status = WfExecutedStatus.Exception;
result.ExceptionType = WfExceptionType.Withdraw_NotInReady;
result.Message = string.Format("要撤销的节点不在【待办】状态，已经无法撤销到上一步，当前状态: {0}",
runningNode.ActivityState);//，节点状态：{0} runningNode.ActivityState 为空报错20150514
return(rmins);
}
//判断是否是多实例节点
if (runningNode.MIHostActivityInstanceID != null &&
runningNode.MIHostActivityInstanceID.Value > 0)
{
//获取同一会签主节点下的前置节点信息
var previousActivityInstance = aim.GetPreviousOfMultipleInstanceNode(
runningNode.MIHostActivityInstanceID.Value,
runningNode.ID, runningNode.CompleteOrder.Value);
if (previousActivityInstance != null &&
previousActivityInstance.EndedByUserID == runner.UserID)
{
//返回多实例节点下的处理模式
rmins = new WfRuntimeManagerWithdrawMI();
rmins.WfExecutedResult = result = new WfExecutedResult();
rmins.BackwardContext.ProcessInstance = processInstance;
rmins.BackwardContext.BackwardToTaskActivity = processModel.GetActivity(previousActivityInstance.ActivityGUID);
rmins.BackwardContext.BackwardToTaskActivityInstance = previousActivityInstance;
rmins.BackwardContext.BackwardFromActivityInstance = runningNode; //准备状态的接收节点
rmins.BackwardContext.BackwardTaskReciever = WfBackwardTaskReciever.Instance(
previousActivityInstance.ActivityName,
previousActivityInstance.EndedByUserID,
previousActivityInstance.EndedByUserName);
//封装AppUser对象
rmins.AppRunner.AppName = runner.AppName;
rmins.AppRunner.AppInstanceID = runner.AppInstanceID;
rmins.AppRunner.UserID = runner.UserID;
rmins.AppRunner.UserName = runner.UserName;
rmins.AppRunner.NextActivityPerformers = ActivityResource.CreateNextActivityPerformers(
previousActivityInstance.ActivityGUID,
runner.UserID,
runner.UserName);
rmins.ActivityResource = new ActivityResource(runner, rmins.AppRunner.NextActivityPerformers);
return(rmins);
}
}
//以下部分是处理非多实例节点的情况
//正常流转过程，无会签加签等特殊场景
rmins = new WfRuntimeManagerWithdraw();
rmins.WfExecutedResult = result = new WfExecutedResult();
//获取上一步流转节点信息，可能经过And, Or等路由节点
var tim = new TransitionInstanceManager();
bool hasGatewayNode = false;
var lastActivityInstanceList = tim.GetPreviousActivityInstance(runningNode, false, out hasGatewayNode).ToList();
if (lastActivityInstanceList == null || lastActivityInstanceList.Count > 1)
{
result.Status = WfExecutedStatus.Exception;
result.ExceptionType = WfExceptionType.Withdraw_HasTooMany;
result.Message = "当前没有可以撤销回去的节点，或者有多个可以撤销回去的节点，无法选择！";
return(rmins);
}
TransitionInstanceEntity lastTaskTransitionInstance = null;
if (hasGatewayNode == false)
{
lastTaskTransitionInstance = tim.GetLastTaskTransition(runner.AppName,
runner.AppInstanceID, runner.ProcessGUID);
}
var withdrawActivityInstance = lastActivityInstanceList[0];
if (withdrawActivityInstance.EndedByUserID != runner.UserID)
{
result.Status = WfExecutedStatus.Exception;
result.ExceptionType = WfExceptionType.Withdraw_NotCreatedByMine;
result.Message = string.Format("上一步节点的任务办理人跟当前登录用户不一致，无法撤销回上一步！节点办理人：{0}",
withdrawActivityInstance.EndedByUserName);
return(rmins);
}
if (withdrawActivityInstance.ActivityType == (short)ActivityTypeEnum.EndNode)
{
result.Status = WfExecutedStatus.Exception;
result.ExceptionType = WfExceptionType.Withdraw_PreviousIsEndNode;
result.Message = "上一步是结束节点，无法撤销！";
return(rmins);
}
if (withdrawActivityInstance.ComplexType != null &&
(withdrawActivityInstance.ComplexType.Value == (short)ComplexTypeEnum.SignTogether ||
withdrawActivityInstance.ComplexType.Value == (short)ComplexTypeEnum.SignForward))
{
//上一步节点是会签（或加签）节点，当前节点是会签节点的下一节点
//会签节点是里程碑节点，不允许可以被撤销，即会签节点的最后一个办理人不能撤销已经完成的会签任务
//但是可以做【退回】处理，退回时整个会签节点重新执行，这样避免会签任务的单个人随意操作。
result.Status = WfExecutedStatus.Exception;
result.ExceptionType = WfExceptionType.Withdraw_SignTogetherNotAllowed;
result.Message = "会签(或加签)已经发送出去（里程碑节点），不能撤销；但可由下一步操作人退回，重新开始所有人的会签(或加签)！";
return(rmins);
}
//准备撤销节点的相关信息
rmins.ProcessModel = processModel;
rmins.AppRunner.ProcessGUID = runner.ProcessGUID;
rmins.BackwardContext.ProcessInstance = processInstance;
rmins.BackwardContext.BackwardToTargetTransitionGUID =
hasGatewayNode == false ? lastTaskTransitionInstance.TransitionGUID : String.Empty;
rmins.BackwardContext.BackwardToTaskActivity = processModel.GetActivity(withdrawActivityInstance.ActivityGUID);
rmins.BackwardContext.BackwardToTaskActivityInstance = withdrawActivityInstance;
rmins.BackwardContext.BackwardFromActivity = processModel.GetActivity(runningNode.ActivityGUID);
rmins.BackwardContext.BackwardFromActivityInstance = runningNode; //准备状态的接收节点
rmins.BackwardContext.BackwardTaskReciever = WfBackwardTaskReciever.Instance(
withdrawActivityInstance.ActivityName,
withdrawActivityInstance.EndedByUserID,
withdrawActivityInstance.EndedByUserName);
//封装AppUser对象
rmins.AppRunner.AppName = runner.AppName;
rmins.AppRunner.AppInstanceID = runner.AppInstanceID;
rmins.AppRunner.UserID = runner.UserID;
rmins.AppRunner.UserName = runner.UserName;
rmins.AppRunner.NextActivityPerformers = ActivityResource.CreateNextActivityPerformers(
withdrawActivityInstance.ActivityGUID,
runner.UserID,
runner.UserName);
rmins.ActivityResource = new ActivityResource(runner, rmins.AppRunner.NextActivityPerformers);
return(rmins);
}
