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Tim Bray <tbray@textuality.com> wrote:
| Arjun Ray wrote:
|> it is written: "The only reason namespaces exist, once again, is to give
|> elements and attributes programmer-friendly names that will be unique
|> across the whole Internet."
|
| Don't be silly. Why would you want names that are unique on a wide
| scale if you weren't going to be combining vocabularies?
*I* don't want them. In fact, I don't even need them. (All I'd need is
unique names for vocabularies, the good ol' PUBLIC id concept.) I'm just
curious about a pretty common delusion about the problem.
| Interesting thought experiment. Why did you leave the <h:head><h:title>
| construct out of the HTML view?
Editing accident, sorry.
| Upon reflection, I'm not convinced that this "views" approach is useful.
I find it very useful.
| Merely subtracting any of the markup vocabularies is almost never apt
| the right thing to do.
That's ridiculous. That would make you hostage to anyone who stuck in a
namespace/vocabulary that you had no clue about. To announce, in instance
markup, that a vocabulary is in play is to allow for the possibility of
*partial* understanding - which happens to include the possibility of "all
I need to know anyway".
| If what you're trying to do is display this,
I was careful to leave specific purposes out. Why have generalized markup
if all w're supposed to be interested in is specific purposes and no
others?
|> If this is acceptable, then my question is: What is the decision procedure
|> by which a generic parser-level filter could generate these views, if it's
|> to take namespaced names as a guide?
|
| Totally application-dependent, I'd think. It doesn't seem likely that
| "generic parser-level filter" is a very useful construct.
You just found one yourself, with the RDBMS loader application.
| > "It can't be done" is an acceptable answer, btw.
|
| In the general case, it can't be done. The namespaces don't give you
| enough information.
Right. Namespaces are neither necessary nor sufficient for the general
problem of vocabulary combination.
As we knew a long time ago.
|
