protected override void OnModifyWorkflow(WfExecutorDataContext dataContext)
{
int targetActivityIndex = FindTargetActivityIndex(this.OriginalActivity);
(targetActivityIndex >= 0).FalseThrow <WfRuntimeException>("活动(ID={0}, Key={1})不能撤回", this.OriginalActivity.ID, this.OriginalActivity.Descriptor.Key);
WfActivityCollection clonedElapsedActivities = new WfActivityCollection();
IWfProcess process = this.OriginalActivity.Process;
clonedElapsedActivities.CopyFrom(process.ElapsedActivities);
dataContext["OriginalActivityID"] = process.CurrentActivity.ID;
//将流程实例活动点的状态设置为未运行
this.OriginalActivity.Process.Withdraw(clonedElapsedActivities[targetActivityIndex], this.CancelAllBranchProcesses);
//删除掉动态添加的点
for (int i = targetActivityIndex; i < clonedElapsedActivities.Count; i++)
{
IWfActivity act = clonedElapsedActivities[i];
process.Activities.FindAll(a => a.CreatorInstanceID == act.ID).ForEach(a => a.Delete());
}
if (this.CancelProcess)
{
process.CancelProcess(this.CancelAllBranchProcesses);
}
}
public void Delete(WfActivityCollection pendingActivities)
{
pendingActivities.NullCheck("pendingActivities");
InSqlClauseBuilder builder = new InSqlClauseBuilder("ACTIVITY_ID");
pendingActivities.ForEach(pai => builder.AppendItem(pai.ID));
if (builder.Count > 0)
{
string sql = string.Format("DELETE FROM WF.PENDING_ACTIVITIES WHERE {0}",
builder.ToSqlString(TSqlBuilder.Instance));
DbHelper.RunSql(sql, this.GetConnectionName());
}
}