func main() {
notSet := &repo{Name: "not-set"}
allSet := &repo{"allSet", b.String("the allset repo"), b.Bool(true), b.Int64(20), b.Float64(4.5)}
zero := &repo{"", b.String(""), b.Bool(false), b.Int64(0), b.Float64(0)}
allSet.print()
notSet.print()
zero.print()
}
func (n *nullScanner) Scan(dest ...interface{}) error {
replacements := map[int]interface{}{}
for i, d := range dest {
switch d.(type) {
case *builtin.Booler:
replacements[i] = dest[i]
dest[i] = &sql.NullBool{}
case *builtin.Stringer:
replacements[i] = dest[i]
dest[i] = &sql.NullString{}
case *builtin.Int64er:
replacements[i] = dest[i]
dest[i] = &sql.NullInt64{}
case *builtin.Float64er:
replacements[i] = dest[i]
dest[i] = &sql.NullFloat64{}
}
}
err := n.Scanner.Scan(dest...)
if err != nil {
return err
}
for i, orig := range replacements {
switch o := orig.(type) {
case *builtin.Booler:
if res := dest[i].(*sql.NullBool); res.Valid {
*o = builtin.Bool(res.Bool)
}
dest[i] = o
case *builtin.Stringer:
if res := dest[i].(*sql.NullString); res.Valid {
*o = builtin.String(res.String)
}
dest[i] = o
case *builtin.Int64er:
if res := dest[i].(*sql.NullInt64); res.Valid {
*o = builtin.Int64(res.Int64)
}
dest[i] = o
case *builtin.Float64er:
if res := dest[i].(*sql.NullFloat64); res.Valid {
*o = builtin.Float64(res.Float64)
}
dest[i] = o
}
}
return nil
}