46 lines
1.0 KiB
Go
Executable File
46 lines
1.0 KiB
Go
Executable File
package mongo
|
|
|
|
import (
|
|
"fmt"
|
|
"reflect"
|
|
|
|
"github.com/shopspring/decimal"
|
|
"go.mongodb.org/mongo-driver/v2/bson"
|
|
)
|
|
|
|
type MgoDecimal struct{}
|
|
|
|
var (
|
|
_ bson.ValueEncoder = &MgoDecimal{}
|
|
_ bson.ValueDecoder = &MgoDecimal{}
|
|
)
|
|
|
|
func (dc *MgoDecimal) EncodeValue(_ bson.EncodeContext, vw bson.ValueWriter, value reflect.Value) error {
|
|
dec, ok := value.Interface().(decimal.Decimal)
|
|
if !ok {
|
|
return fmt.Errorf("value %v is not decimal.Decimal", value.Interface())
|
|
}
|
|
|
|
primDec, err := bson.ParseDecimal128(dec.String())
|
|
if err != nil {
|
|
return fmt.Errorf("decimal %v to Decimal128: %w", dec, err)
|
|
}
|
|
|
|
return vw.WriteDecimal128(primDec)
|
|
}
|
|
|
|
func (dc *MgoDecimal) DecodeValue(_ bson.DecodeContext, vr bson.ValueReader, value reflect.Value) error {
|
|
primDec, err := vr.ReadDecimal128()
|
|
if err != nil {
|
|
return fmt.Errorf("read Decimal128: %w", err)
|
|
}
|
|
|
|
dec, err := decimal.NewFromString(primDec.String())
|
|
if err != nil {
|
|
return fmt.Errorf("Decimal128 %v to decimal: %w", primDec, err)
|
|
}
|
|
|
|
value.Set(reflect.ValueOf(dec))
|
|
return nil
|
|
}
|