func unflatten(datum types.Datum, tp *types.FieldType) (types.Datum, error) {
if datum.IsNull() {
return datum, nil
}
switch tp.Tp {
case mysql.TypeFloat:
datum.SetFloat32(float32(datum.GetFloat64()))
return datum, nil
case mysql.TypeTiny, mysql.TypeShort, mysql.TypeYear, mysql.TypeInt24, mysql.TypeLong, mysql.TypeLonglong,
mysql.TypeDouble, mysql.TypeTinyBlob, mysql.TypeMediumBlob, mysql.TypeBlob, mysql.TypeLongBlob,
mysql.TypeVarchar, mysql.TypeString:
return datum, nil
case mysql.TypeDate, mysql.TypeDatetime, mysql.TypeTimestamp:
var t mysql.Time
t.Type = tp.Tp
t.Fsp = tp.Decimal
err := t.Unmarshal(datum.GetBytes())
if err != nil {
return datum, errors.Trace(err)
}
datum.SetValue(t)
return datum, nil
case mysql.TypeDuration:
dur := mysql.Duration{Duration: time.Duration(datum.GetInt64())}
datum.SetValue(dur)
return datum, nil
case mysql.TypeNewDecimal, mysql.TypeDecimal:
dec, err := mysql.ParseDecimal(datum.GetString())
if err != nil {
return datum, errors.Trace(err)
}
if tp.Decimal >= 0 {
dec = dec.Truncate(int32(tp.Decimal))
}
datum.SetValue(dec)
return datum, nil
case mysql.TypeEnum:
enum, err := mysql.ParseEnumValue(tp.Elems, datum.GetUint64())
if err != nil {
return datum, errors.Trace(err)
}
datum.SetValue(enum)
return datum, nil
case mysql.TypeSet:
set, err := mysql.ParseSetValue(tp.Elems, datum.GetUint64())
if err != nil {
return datum, errors.Trace(err)
}
datum.SetValue(set)
return datum, nil
case mysql.TypeBit:
bit := mysql.Bit{Value: datum.GetUint64(), Width: tp.Flen}
datum.SetValue(bit)
return datum, nil
}
log.Error(tp.Tp, datum)
return datum, nil
}
func parseDayInterval(value types.Datum) (int64, error) {
switch value.Kind() {
case types.KindString:
vs := value.GetString()
s := strings.ToLower(vs)
if s == "false" {
return 0, nil
} else if s == "true" {
return 1, nil
}
value.SetString(reg.FindString(vs))
}
return value.ToInt64()
}
func coerceArithmetic(a types.Datum) (d types.Datum, err error) {
switch a.Kind() {
case types.KindString, types.KindBytes:
// MySQL will convert string to float for arithmetic operation
f, err := types.StrToFloat(a.GetString())
if err != nil {
return d, errors.Trace(err)
}
d.SetFloat64(f)
return d, errors.Trace(err)
case types.KindMysqlTime:
// if time has no precision, return int64
t := a.GetMysqlTime()
de := t.ToNumber()
if t.Fsp == 0 {
d.SetInt64(de.IntPart())
return d, nil
}
d.SetMysqlDecimal(de)
return d, nil
case types.KindMysqlDuration:
// if duration has no precision, return int64
du := a.GetMysqlDuration()
de := du.ToNumber()
if du.Fsp == 0 {
d.SetInt64(de.IntPart())
return d, nil
}
d.SetMysqlDecimal(de)
return d, nil
case types.KindMysqlHex:
d.SetFloat64(a.GetMysqlHex().ToNumber())
return d, nil
case types.KindMysqlBit:
d.SetFloat64(a.GetMysqlBit().ToNumber())
return d, nil
case types.KindMysqlEnum:
d.SetFloat64(a.GetMysqlEnum().ToNumber())
return d, nil
case types.KindMysqlSet:
d.SetFloat64(a.GetMysqlSet().ToNumber())
return d, nil
default:
return a, nil
}
}
func convertDateFormat(ctx context.Context, arg types.Datum, b byte) (types.Datum, error) {
var d types.Datum
var err error
switch b {
case 'b':
d, err = builtinMonthName([]types.Datum{arg}, ctx)
if err == nil && !d.IsNull() {
d.SetString(d.GetString()[:3])
}
case 'M':
d, err = builtinMonthName([]types.Datum{arg}, ctx)
case 'm':
d, err = builtinMonth([]types.Datum{arg}, ctx)
if err == nil && !d.IsNull() {
d.SetString(fmt.Sprintf("%02d", d.GetInt64()))
}
case 'c':
d, err = builtinMonth([]types.Datum{arg}, ctx)
case 'D':
d, err = abbrDayOfMonth(arg, ctx)
case 'd':
d, err = builtinDayOfMonth([]types.Datum{arg}, ctx)
if err == nil && !d.IsNull() {
d.SetString(fmt.Sprintf("%02d", d.GetInt64()))
}
case 'e':
d, err = builtinDayOfMonth([]types.Datum{arg}, ctx)
case 'j':
d, err = builtinDayOfYear([]types.Datum{arg}, ctx)
if err == nil {
d.SetString(fmt.Sprintf("%03d", d.GetInt64()))
}
case 'H', 'k':
d, err = builtinHour([]types.Datum{arg}, ctx)
if err == nil && b == 'H' && !d.IsNull() {
d.SetString(fmt.Sprintf("%02d", d.GetInt64()))
}
case 'h', 'I', 'l':
d, err = builtinHour([]types.Datum{arg}, ctx)
if err == nil && !d.IsNull() {
if d.GetInt64() > 12 {
d.SetInt64(d.GetInt64() - 12)
} else if d.GetInt64() == 0 {
d.SetInt64(12)
}
d.SetString(fmt.Sprintf("%02d", d.GetInt64()))
}
case 'i':
d, err = builtinMinute([]types.Datum{arg}, ctx)
if err == nil && !d.IsNull() {
d.SetString(fmt.Sprintf("%02d", d.GetInt64()))
}
case 'p':
d, err = builtinHour([]types.Datum{arg}, ctx)
if err == nil && !d.IsNull() {
if d.GetInt64() < 12 {
d.SetString("AM")
break
}
d.SetString("PM")
}
case 'r':
d, err = to12Hour(arg, ctx)
case 'T':
d, err = builtinTime([]types.Datum{arg}, ctx)
if err == nil && !d.IsNull() {
duration := types.Duration{
Duration: d.GetMysqlDuration().Duration,
Fsp: 0}
d.SetMysqlDuration(duration)
}
case 'S', 's':
d, err = builtinSecond([]types.Datum{arg}, ctx)
if err == nil && !d.IsNull() {
d.SetString(fmt.Sprintf("%02d", d.GetInt64()))
}
case 'f':
d, err = builtinMicroSecond([]types.Datum{arg}, ctx)
if err == nil && !d.IsNull() {
d.SetString(fmt.Sprintf("%06d", d.GetInt64()))
}
case 'U':
d, err = builtinWeek([]types.Datum{arg, types.NewIntDatum(0)}, ctx)
if err == nil && !d.IsNull() {
d.SetString(fmt.Sprintf("%02d", d.GetInt64()))
}
case 'u':
d, err = builtinWeek([]types.Datum{arg, types.NewIntDatum(1)}, ctx)
if err == nil && !d.IsNull() {
d.SetString(fmt.Sprintf("%02d", d.GetInt64()))
}
case 'V':
d, err = builtinWeek([]types.Datum{arg, types.NewIntDatum(2)}, ctx)
if err == nil && !d.IsNull() {
d.SetString(fmt.Sprintf("%02d", d.GetInt64()))
}
case 'v':
d, err = builtinWeek([]types.Datum{arg, types.NewIntDatum(3)}, ctx)
if err == nil && !d.IsNull() {
d.SetString(fmt.Sprintf("%02d", d.GetInt64()))
}
case 'a':
d, err = builtinDayName([]types.Datum{arg}, ctx)
if err == nil && !d.IsNull() {
d.SetString(d.GetString()[:3])
}
case 'W':
d, err = builtinDayName([]types.Datum{arg}, ctx)
case 'w':
d, err = builtinDayOfWeek([]types.Datum{arg}, ctx)
if err == nil && !d.IsNull() {
d.SetInt64(d.GetInt64() - 1)
}
case 'X':
d, err = builtinYearWeek([]types.Datum{arg, types.NewIntDatum(2)}, ctx)
if err == nil && !d.IsNull() {
if d.GetInt64() == math.MaxUint32 {
break
}
str := fmt.Sprintf("%04d", d.GetInt64())
d.SetString(fmt.Sprintf("%04s", str[:4]))
}
case 'x':
d, err = builtinYearWeek([]types.Datum{arg, types.NewIntDatum(3)}, ctx)
if err == nil && !d.IsNull() {
if d.GetInt64() == math.MaxUint32 {
break
}
str := fmt.Sprintf("%04d", d.GetInt64())
d.SetString(fmt.Sprintf("%04s", str[:4]))
}
case 'Y':
d, err = builtinYear([]types.Datum{arg}, ctx)
if err == nil && !d.IsNull() {
d.SetString(fmt.Sprintf("%04d", d.GetInt64()))
}
case 'y':
d, err = builtinYear([]types.Datum{arg}, ctx)
if err == nil && !d.IsNull() {
str := fmt.Sprintf("%04d", d.GetInt64())
d.SetString(fmt.Sprintf("%02s", str[2:]))
}
default:
d.SetString(string(b))
}
if err == nil && !d.IsNull() {
d.SetString(fmt.Sprintf("%v", d.GetValue()))
}
return d, errors.Trace(err)
}
// Unflatten converts a raw datum to a column datum.
func Unflatten(datum types.Datum, ft *types.FieldType, inIndex bool) (types.Datum, error) {
if datum.IsNull() {
return datum, nil
}
switch ft.Tp {
case mysql.TypeFloat:
datum.SetFloat32(float32(datum.GetFloat64()))
return datum, nil
case mysql.TypeTiny, mysql.TypeShort, mysql.TypeYear, mysql.TypeInt24,
mysql.TypeLong, mysql.TypeLonglong, mysql.TypeDouble, mysql.TypeTinyBlob,
mysql.TypeMediumBlob, mysql.TypeBlob, mysql.TypeLongBlob, mysql.TypeVarchar,
mysql.TypeString:
return datum, nil
case mysql.TypeDate, mysql.TypeDatetime, mysql.TypeTimestamp:
var t mysql.Time
t.Type = ft.Tp
t.Fsp = ft.Decimal
var err error
err = t.FromPackedUint(datum.GetUint64())
if err != nil {
return datum, errors.Trace(err)
}
datum.SetMysqlTime(t)
return datum, nil
case mysql.TypeDuration:
dur := mysql.Duration{Duration: time.Duration(datum.GetInt64())}
datum.SetValue(dur)
return datum, nil
case mysql.TypeNewDecimal:
if datum.Kind() == types.KindMysqlDecimal {
if ft.Decimal >= 0 {
dec := datum.GetMysqlDecimal().Truncate(int32(ft.Decimal))
datum.SetMysqlDecimal(dec)
}
return datum, nil
}
dec, err := mysql.ParseDecimal(datum.GetString())
if err != nil {
return datum, errors.Trace(err)
}
if ft.Decimal >= 0 {
dec = dec.Truncate(int32(ft.Decimal))
}
datum.SetValue(dec)
return datum, nil
case mysql.TypeEnum:
enum, err := mysql.ParseEnumValue(ft.Elems, datum.GetUint64())
if err != nil {
return datum, errors.Trace(err)
}
datum.SetValue(enum)
return datum, nil
case mysql.TypeSet:
set, err := mysql.ParseSetValue(ft.Elems, datum.GetUint64())
if err != nil {
return datum, errors.Trace(err)
}
datum.SetValue(set)
return datum, nil
case mysql.TypeBit:
bit := mysql.Bit{Value: datum.GetUint64(), Width: ft.Flen}
datum.SetValue(bit)
return datum, nil
}
return datum, nil
}