camper/pkg/database/OptionUnits.go

61 lines
1.4 KiB
Go

package database
import (
"fmt"
"github.com/jackc/pgio"
"github.com/jackc/pgtype"
)
type OptionUnits struct {
OptionID int
Units int
}
func (src OptionUnits) EncodeBinary(ci *pgtype.ConnInfo, dst []byte) ([]byte, error) {
typeName := OptionUnitsTypeName
dt, ok := ci.DataTypeForName(typeName)
if !ok {
return nil, fmt.Errorf("unable to find oid for type name %v", typeName)
}
values := []interface{}{
src.OptionID,
src.Units,
}
ct := pgtype.NewValue(dt.Value).(*pgtype.CompositeType)
if err := ct.Set(values); err != nil {
return nil, err
}
return ct.EncodeBinary(ci, dst)
}
type OptionUnitsArray []*OptionUnits
func (src OptionUnitsArray) EncodeBinary(ci *pgtype.ConnInfo, buf []byte) ([]byte, error) {
typeName := OptionUnitsTypeName
dt, ok := ci.DataTypeForName(typeName)
if !ok {
return nil, fmt.Errorf("unable to find oid for type name %v", typeName)
}
arrayHeader := pgtype.ArrayHeader{
ElementOID: int32(dt.OID),
Dimensions: []pgtype.ArrayDimension{{Length: int32(len(src)), LowerBound: 1}},
}
buf = arrayHeader.EncodeBinary(ci, buf)
for _, optionUnits := range src {
sp := len(buf)
buf = pgio.AppendInt32(buf, -1)
elemBuf, err := optionUnits.EncodeBinary(ci, buf)
if err != nil {
return nil, err
}
if elemBuf != nil {
buf = elemBuf
pgio.SetInt32(buf[sp:], int32(len(buf[sp:])-4))
}
}
return buf, nil
}