func (ts *Ts) RollBack(savepoint int) error {
var tsr *TsRecord
var ok bool
var rollbacklist ds.List
if ts.tsrList.Len() == 0 {
return err_not_found_ts
}
if savepoint >= ts.curSavePoint {
return err_not_found_savepoint
}
printTsrArray(ts.tsrList)
if savepoint >= 0 {
rollbacklist = ts.subTsrListBySavePoint(savepoint)
} else {
rollbacklist = ts.tsrList
}
printTsrArray(rollbacklist)
printTsrArray(ts.tsrList)
if rollbacklist.Len() == 0 {
return nil
}
for e := rollbacklist.GetTailNode(); e != nil; e = e.Prev {
if tsr, ok = e.Value.(*TsRecord); !ok {
continue
}
ts.rollBackATsr(tsr)
if tsr.Dbptr != nil {
tsr.Dbptr.Lock.Cancel()
}
}
return nil
}
