Re: [xml] New user, evaluating XML libraries

[Boris Kolpackov <boris codesynthesis com>]

Hi Daniel,

Daniel Veillard <veillard redhat com> writes:

> > >   There is no functional XSD validator. Go to the xmlschemas-dev
> > > archive at W3C, check the last 5 questions from Michael Kay (who is
> > > a Schemas implementor and one of the W3C spec writers), they are unanswered
> > > for weeks now, nobody can tell what it is supposed to do. Trying to use
> > > XSD to promote interoperability or validation of data is kind of a joke.
> > > Relax-NG on the other hand is an ISO standard, has a formal specification
> > > and can be read and understood by most programmers in a matter of a couple
> > > of days.
> >
> > While what you say could be true, most XML parsers these days support
> > XML Schema while there is hardly any that support Relax-NG. Also there
>
>   Technically nor XSD nor RNG are handled by parsers, it's sitting on top.
>
> > are a lot of industry standards organizations that managed to define
> > interoperable schemas that describe fairly complex XML vocabularies.
> > Finally, one last thing, that a lot of people tend to overlook, is that
> > it is fairly straightforward (in most cases) to provide XML data
> > binding (generated types in a programming language that represent the
> > given vocabulary) from XML Schema. I do not think it will be anywhere
> > as easy or at all possible to do the same with Relax-NG.
>
>   When you mean data bindings, it's records, even easier in RNG than XSD,
> and RNG usually reuses XSD datatypes. I see no positive differential for
> XSD here. Anyway the initial question was *not* about data bindings,
> and further exchanges showed that XSD (nor RNG) was not part of the picture,
> so please could you keep this focused on what is really needed and not
> what you would like to promote, thanks.


Daniel, I do not want to start a flame war here but I think you are being
contradictory here. The OP said that he is not sure whether he needs XML
Schema validation or not. Instead of just ignoring this topic altogether,
in your reply you started spreading FUD about XSD and promoting Relax-NG
(about which OP haven't said a word). Now when I present arguments against
your XSD FUD, you are calling it promotion and off-topic. Not very nice,
IMO.


-boris