Re: BUG #15908: Xpath operations fail

čt 18. 7. 2019 v 16:22 odesílatel Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> napsal:

> Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com> writes:
> > čt 18. 7. 2019 v 15:06 odesílatel Daniel Gustafsson <daniel(at)yesql(dot)se>
> > napsal:
> >> I haven’t heard of anyone working on that, and it seems unlikely to
> happen
> >> within the near future as few, if any, libraries support XPath 2.0 (or
> >> later).
>
> > Only XPath 1.0 is supported by libxml2. And this library is in permanent
> > feature freeze mode :-(. Unfortunately, there is not any other library
> with
> > friendly licence available for C language.
>
> Not only that, but libxml2 is a rich source of security bugs. I wish
> we could get rid of that dependency altogether. Unfortunately,
> reimplementing our own xml and xpath functionality from scratch
> seems like a large project :-(. I don't think there's anybody
> with sufficient time and interest to do it.
>

Maybe some C++ or Java library with good licence can be ported to C for
usage in Postgres.

But it is lot of work.

Pavel

>
> regards, tom lane
>