As Far as I See, you check all the combinations of methods in wideness
order.
Why not have a generic wrapper struct, that is filled with the underlying
driver.Conn's methods,
and use that if not nil, but use the generic implementation if not.
Like
```
type wrappedConn struct {
driver.Conn
queryContext func(...)
}
func (wc wrappedConn) QueryContext(...) ... {
if wc.queryContext != nil { return wc.queryContext(...) }
return wc.Conn.Query(...)
}
```
This way you only have to check for each method on driver.Conn, and fill
the wrappedConn's functions as they axist/not.
Vasiliy Tolstov a következőt írta (2023. június 10., szombat, 12:16:34
UTC+2):
> I have sql driver that wraps original driver.Driver, to be able to work
> with drivers that not have ExecerContext or QuerierContext i need to return
> wrapped to that supports only needed interfaces.
> I'm to want to write all cases via handmade switch case and write
> generator that creates full combo list of methods and generate interfaces
> for this methods.
> But this brings file that contains 20K lines
> https://git.unistack.org/unistack-org/micro-wrapper-sql/src/branch/master/wrap_gen.go
> Does it possible to have smaller code that provides the same effect?
> Or I'm miss something?
>
> --
> Vasiliy Tolstov,
> e-mail: v.to...@selfip.ru
>
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