/// <summary>
/// 是否可以查看流程
/// </summary>
/// <param name="instance">流程实例.</param>
public override bool CanViewWorkflow(WorkflowInstance instance)
{
// 检查历史环节中当前用户是否参与过流程
var items = instance.GetWorkItems();
var hasTakePartIn = items.Any(p => p.PartId.Equals(CurrentUser.Id, StringComparison.OrdinalIgnoreCase)
|| (!string.IsNullOrEmpty(p.MandataryId) && p.MandataryId.Equals(CurrentUser.Id, StringComparison.OrdinalIgnoreCase)));
if (hasTakePartIn) {
return true;
}
// 检查当前环节
var hasDelegate = DelegateWork.IsDelegate(instance.AppCode, instance.CurrentWorkItem.PartId, CurrentUser.Id);
if (hasDelegate) {
return true;
}
return false;
}
/// <summary>
/// 初始化流程表单对象
/// </summary>
/// <param name="instance">流程实例</param>
/// <returns></returns>
public static WorkflowForm Init(WorkflowInstance instance)
{
var currentUser = SecurityContext.User;
var form = new WorkflowForm();
form.Instance = instance;
form.AppCode = instance.AppCode;
form.AppName = instance.AppName;
form.Description = instance.Description;
form.VersionStr = instance.Version.ToString(CultureInfo.InvariantCulture);
form.InstanceNo = instance.InstanceNo;
#region FormStatus
switch (instance.Status) {
case InstanceStatus.Draft:
{
form.Status = FormStatus.Draft;
break;
}
case InstanceStatus.Running:
{
var currentWorkItem = instance.CurrentWorkItem;
// 待办条件：当前环节的审批人为当前登录用户 && 当前环节未结束
if ((currentWorkItem.PartId.Equals(currentUser.Id, StringComparison.OrdinalIgnoreCase)
|| (!string.IsNullOrEmpty(currentWorkItem.MandataryId) && currentWorkItem.MandataryId.Equals(currentUser.Id, StringComparison.OrdinalIgnoreCase))
|| DelegateWork.IsDelegate(instance.AppCode, currentWorkItem.PartId, currentUser.Id))
&& currentWorkItem.TaskStatus == TaskStatus.Waiting) {
form.Status = FormStatus.Todo;
} else {
form.Status = FormStatus.Done;
}
break;
}
case InstanceStatus.Cancel:
case InstanceStatus.Deleted:
case InstanceStatus.Finished:
{
form.Status = FormStatus.Done;
break;
}
}
#endregion
form.Creator = SecurityContext.Provider.Get(instance.CreatorId);
form.CreatorDept = SecurityContext.Provider.GetOrganization(form.Creator.DeptId);
form.CurrentUser = SecurityContext.User;
form.TaskId = instance.CurrentWorkItem == null ? 1 : instance.CurrentWorkItem.TaskId;
form.CurrentActi = instance.CurrentWorkItem == null ? instance.CurrentActivity : instance.CurrentWorkItem.CurrentActi;
form.Controller = FlowFactory.GetWorklfowControllerName(form.AppCode);
form.Instance = instance;
// 根据WorkItem中的环节信息计算出历史环节（Distinct）
// 获取并添加到List中，用于渲染
var workItems = instance.GetWorkItems();
if (workItems != null && workItems.Any()) {
var lastTaskId = workItems.First(p => p.CurrentActi.Equals(form.CurrentActi, StringComparison.OrdinalIgnoreCase)).TaskId;
var activities = workItems.Where(p => p.TaskId <= lastTaskId).OrderBy(p => p.TaskId);
foreach (var activity in activities) {
if (form.HistoryActivities.Contains(activity.CurrentActi)) {
continue;
}
form.HistoryActivities.Add(activity.CurrentActi);
}
}
if (form.HistoryActivities.Count == 0) {
form.HistoryActivities.Add(form.CurrentActi);
}
return form;
}
/// <summary>
/// 启动流程实例
/// </summary>
/// <param name="instance">流程实例对象</param>
/// <remarks>同时新增流程办理历史</remarks>
/// <returns></returns>
public override bool SaveWorkflow(WorkflowInstance instance)
{
var ret = 0;
var isInstExists = WorkflowInstanceFactory.IsExists<K2WorkflowInstance>(instance.InstanceNo);
if (isInstExists) {
ret = _dao.UpdateFields<K2WorkflowInstance>(instance, new string[] { "Title", "Status", "EndTime" });
} else {
using (var transactionScope = new TransactionScope(TransactionScopeOption.Required)) {
ret = _dao.Insert<WorkflowInstance>(instance);
_dao.Insert<K2WorkflowItem>(instance.CurrentWorkItem); //增加一个新的流程办理信息
transactionScope.Complete();
}
}
// 流程取消或删除时，删除对应的待办记录
if (instance.Status == InstanceStatus.Cancel || instance.Status == InstanceStatus.Deleted) {
var workitems = instance.GetWorkItems();
var effectRows = 0;
using (var transactionScope = new TransactionScope(TransactionScopeOption.Required)) {
foreach (var workitem in workitems) {
if (!workitem.FinishTime.HasValue && workitem.TaskStatus == TaskStatus.Waiting) {
workitem.FinishTime = DateTime.Now;
workitem.TaskStatus = TaskStatus.Finished;
effectRows = _dao.UpdateFields<K2WorkflowItem>(workitem, new string[]{ "FinishTime", "TaskStatus" });
if (effectRows > 0) {
PendingJob.Delete(workitem.InstanceNo, workitem.TaskId);
}
}
}
transactionScope.Complete();
}
}
return (ret > 0);
}
