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0 pointsrecursive2y ago0 comments

They totally deserved it for making namespaces that "just happen to be" URLs. XML is insane.

0 comments

10 comments · 4 top-level

IshKebab2y ago· 5 in thread

Why even are they URLs? The only reasonable suggestion I could find is that it was part of an abandoned or poorly adopted idea to also host the schema at that URL.

TillE2y ago

Probably the same sort of thought process that led to the convention of Java packages being named com.example.whatever. It identifies the creator and gives you some structure to create a unique identifier.

Lot of half-baked ideas floating around in the early years of the commercial internet, but the Java thing held up better.

agwa2y ago

It's a way to ensure global uniqueness. In the end they're just compared byte-for-byte as strings.

IshKebab2y ago

Precisely, so why are they URLs and not something like Java's packages? Or just a URL without the `http://`?

1 more reply

hinkley2y ago

In addition to the uniqueness others have mentioned, where do you find the canonical definition of the schema if it doesn’t have a url? So they just cut out the mapping and made them one.

recursiveOP2y ago

This is nonsensical. Where did you get the XSD from? You could get a proper spec from the same place. Contrast this with JSON, which makes zero attempt. People (generally) prefer that. If you were dead-set on embedding the documentation URL in the namespace, you could at least remove the tripping hazard and use new "protocol" like `xsd-spec://host/specs/foo/v1.2` or something.

rodgerd2y ago· 1 in thread

Ah I remember the good old days of strict XML parsers that would fail if they didn't have Internet access to pull the schema in.

hinkley2y ago

Which you didn’t figure out for a while and so your CI/CD pipeline and dev code/build/test cycles hammer their servers for months.

Then you prefetch to fix that problem, and now some slow calls you hadn’t gotten to the bottom of suddenly aren’t.

kevindamm2y ago

well, but they're URIs. See, the difference is right there. An identifier not a location. Nobody should ever confuse the two!

/s of course

agwa2y ago

Schemas != namespaces.

I'm sure some braindead software out there attempts to retrieve namespace URIs, but it would surely be a drop in the bucket compared to traffic for schemas/DTDs (which are intended to be retrieved).

j / k navigate · click thread line to collapse

0 comments

10 comments · 4 top-level

IshKebab2y ago· 5 in thread

Why even are they URLs? The only reasonable suggestion I could find is that it was part of an abandoned or poorly adopted idea to also host the schema at that URL.

TillE2y ago

Lot of half-baked ideas floating around in the early years of the commercial internet, but the Java thing held up better.

agwa2y ago

It's a way to ensure global uniqueness. In the end they're just compared byte-for-byte as strings.

IshKebab2y ago

Precisely, so why are they URLs and not something like Java's packages? Or just a URL without the `http://`?

1 more reply

hinkley2y ago

In addition to the uniqueness others have mentioned, where do you find the canonical definition of the schema if it doesn’t have a url? So they just cut out the mapping and made them one.

recursiveOP2y ago

rodgerd2y ago· 1 in thread

Ah I remember the good old days of strict XML parsers that would fail if they didn't have Internet access to pull the schema in.

hinkley2y ago

Which you didn’t figure out for a while and so your CI/CD pipeline and dev code/build/test cycles hammer their servers for months.

Then you prefetch to fix that problem, and now some slow calls you hadn’t gotten to the bottom of suddenly aren’t.

kevindamm2y ago

well, but they're URIs. See, the difference is right there. An identifier not a location. Nobody should ever confuse the two!

/s of course

agwa2y ago

Schemas != namespaces.

I'm sure some braindead software out there attempts to retrieve namespace URIs, but it would surely be a drop in the bucket compared to traffic for schemas/DTDs (which are intended to be retrieved).

j / k navigate · click thread line to collapse