本文整理匯總了Golang中github.com/cockroachdb/cockroach/sql/parser.DDecimal.SetString方法的典型用法代碼示例。如果您正苦於以下問題：Golang DDecimal.SetString方法的具體用法？Golang DDecimal.SetString怎麽用？Golang DDecimal.SetString使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類github.com/cockroachdb/cockroach/sql/parser.DDecimal的用法示例。
在下文中一共展示了DDecimal.SetString方法的4個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Golang代碼示例。
示例1: BenchmarkDecodeBinaryDecimal
func BenchmarkDecodeBinaryDecimal(b *testing.B) {
wbuf := writeBuffer{bytecount: metric.NewCounter()}
expected := new(parser.DDecimal)
expected.SetString("-1728718718271827121233.1212121212")
wbuf.writeBinaryDatum(expected)
rbuf := readBuffer{msg: wbuf.wrapped.Bytes()}
plen, err := rbuf.getUint32()
if err != nil {
b.Fatal(err)
}
bytes, err := rbuf.getBytes(int(plen))
if err != nil {
b.Fatal(err)
}
b.ResetTimer()
for i := 0; i < b.N; i++ {
b.StartTimer()
got, err := decodeOidDatum(oid.T_numeric, formatBinary, bytes)
b.StopTimer()
if err != nil {
b.Fatal(err)
} else if got.Compare(expected) != 0 {
b.Fatalf("expected %s, got %s", expected, got)
}
}
}示例2: datumFromProto
func datumFromProto(d driver.Datum) parser.Datum {
arg := d.Payload
if arg == nil {
return parser.DNull
}
switch t := arg.(type) {
case *driver.Datum_BoolVal:
return parser.DBool(t.BoolVal)
case *driver.Datum_IntVal:
return parser.DInt(t.IntVal)
case *driver.Datum_FloatVal:
return parser.DFloat(t.FloatVal)
case *driver.Datum_DecimalVal:
dd := parser.DDecimal{}
if _, ok := dd.SetString(t.DecimalVal); !ok {
panic(fmt.Sprintf("could not parse string %q as decimal", t.DecimalVal))
}
return dd
case *driver.Datum_BytesVal:
return parser.DBytes(t.BytesVal)
case *driver.Datum_StringVal:
return parser.DString(t.StringVal)
case *driver.Datum_DateVal:
return parser.DDate(t.DateVal)
case *driver.Datum_TimeVal:
return parser.DTimestamp{Time: t.TimeVal.GoTime()}
case *driver.Datum_IntervalVal:
return parser.DInterval{Duration: time.Duration(t.IntervalVal)}
default:
panic(fmt.Sprintf("unexpected type %T", t))
}
}示例3: BenchmarkWriteBinaryDecimal
func BenchmarkWriteBinaryDecimal(b *testing.B) {
buf := writeBuffer{bytecount: metric.NewCounter()}
dec := new(parser.DDecimal)
dec.SetString("-1728718718271827121233.1212121212")
// Warm up the buffer.
buf.writeBinaryDatum(dec)
buf.wrapped.Reset()
b.ResetTimer()
for i := 0; i < b.N; i++ {
b.StartTimer()
buf.writeBinaryDatum(dec)
b.StopTimer()
buf.wrapped.Reset()
}
}示例4: decodeOidDatum
//.........這裏部分代碼省略.........
d = parser.DInt(i)
default:
return d, fmt.Errorf("unsupported int2 format code: %d", code)
}
case oid.T_int4:
switch code {
case formatText:
i, err := strconv.ParseInt(string(b), 10, 64)
if err != nil {
return d, err
}
d = parser.DInt(i)
case formatBinary:
var i int32
err := binary.Read(bytes.NewReader(b), binary.BigEndian, &i)
if err != nil {
return d, err
}
d = parser.DInt(i)
default:
return d, fmt.Errorf("unsupported int4 format code: %d", code)
}
case oid.T_int8:
switch code {
case formatText:
i, err := strconv.ParseInt(string(b), 10, 64)
if err != nil {
return d, err
}
d = parser.DInt(i)
case formatBinary:
var i int64
err := binary.Read(bytes.NewReader(b), binary.BigEndian, &i)
if err != nil {
return d, err
}
d = parser.DInt(i)
default:
return d, fmt.Errorf("unsupported int8 format code: %d", code)
}
case oid.T_float4:
switch code {
case formatText:
f, err := strconv.ParseFloat(string(b), 64)
if err != nil {
return d, err
}
d = parser.DFloat(f)
case formatBinary:
var f float32
err := binary.Read(bytes.NewReader(b), binary.BigEndian, &f)
if err != nil {
return d, err
}
d = parser.DFloat(f)
default:
return d, fmt.Errorf("unsupported float4 format code: %d", code)
}
case oid.T_float8:
switch code {
case formatText:
f, err := strconv.ParseFloat(string(b), 64)
if err != nil {
return d, err
}
d = parser.DFloat(f)
case formatBinary:
var f float64
err := binary.Read(bytes.NewReader(b), binary.BigEndian, &f)
if err != nil {
return d, err
}
d = parser.DFloat(f)
default:
return d, fmt.Errorf("unsupported float8 format code: %d", code)
}
case oid.T_numeric:
switch code {
case formatText:
dd := parser.DDecimal{}
if _, ok := dd.SetString(string(b)); !ok {
return nil, fmt.Errorf("could not parse string %q as decimal", b)
}
d = dd
default:
return d, fmt.Errorf("unsupported numeric format code: %d", code)
}
case oid.T_text:
switch code {
case formatText:
d = parser.DString(b)
default:
return d, fmt.Errorf("unsupported text format code: %d", code)
}
// TODO(mjibson): implement date/time types
default:
return d, fmt.Errorf("unsupported OID: %v", id)
}
return d, nil
}