/// <summary>
/// 用途：撤回流程活动
/// 范围：大管理员|流程模型管理员|当前流程实例活动的操作者|当前流程实例活动的代理操作者
/// </summary>
/// <param name="workitemInstanceGuid"></param>
/// <returns></returns>
public ResultMessage RecallWorkitemInstance(string workitemInstanceGuid)
{
WorkitemInstance wii = this.GetWorkitemInstance(workitemInstanceGuid);
///加入权限控制大管理员|流程模型管理员|当前流程实例活动的操作者|当前流程实例活动的代理操作者
if (!(this.Context.CurUser.IsAdministrator() ||
wii.GetWorkflowInstance().GetWorkflow().Administrators.Contains(this.Context.CurUser, _uc) ||
wii.User.Guid.Equals(this.Context.CurUser.Guid) ||
(wii.IsProxy && wii.ProxyUser.Guid.Equals(this.Context.CurUser.Guid))
))
{
return new ResultMessage()
{
State = false, Message = "不在许可操作范围内！"
}
}
;
///不允许回收尚不在运行的流程实例
if (!wii.GetWorkflowInstance().WorkflowState.Equals(eWorkflowState.Running))
{
return new ResultMessage()
{
State = false, Message = "该流程实例已经结束或者中止，请先回收流程实例再回收具体步骤！"
}
}
;
///对尚在运行的流程实例无需回收
if (wii.WorkitemInstanceState.Equals(eWorkitemState.Running)
||
wii.WorkitemInstanceState.Equals(eWorkitemState.ExclusionCompleted)
||
wii.WorkitemInstanceState.Equals(eWorkitemState.Ready))
{
return new ResultMessage()
{
State = false, Message = "该流程活动无需回收！"
}
}
;
var nwiis = wii.GetNextWorkitemInstances();
///判断后继流程活动有无被处理，未处理的可以回收
bool b = true;
foreach (var t in nwiis)
{
if (t.WorkitemInstanceState.Equals(eWorkitemState.Abort)
||
t.WorkitemInstanceState.Equals(eWorkitemState.Completed)
||
t.WorkitemInstanceState.Equals(eWorkitemState.ExclusionCompleted)
)
{
b = false;
break;
}
}
if (!b)
{
return new ResultMessage()
{
State = false, Message = "后继流程节点已经被处理，不能回收！"
}
}
;
///进行回收
for (int i = 0, cnt = nwiis.Count; i < cnt; i++)
{
this.SetWorkitemInstance(nwiis[i], eStoreType.Remove);
}
wii.Restart();
wii.NextActivities = new List <NextActivity>();
b = this.SetWorkitemInstance(wii, eStoreType.Update);
if (b)
{
return new ResultMessage()
{
State = true, Message = "回收流程活动成功！"
}
}
;
else
{
return new ResultMessage()
{
State = false, Message = "回收流程活动失败！"
}
};
}
}
}