Re: Circular Imports

On 1/17/08, Alex Milowski <alex@milowski.org> wrote:
> On 1/10/08, Richard Tobin <richard@inf.ed.ac.uk> wrote:
> >
> > Ignoring transient problems, the difference is that referring to the
> > same thing by two names will "work" if the redirected names are used.
> > For example, if http://oldlocation.example/pipelib.xml redirects to
> > http://newlocation.example/pipelib.xml then it will work to import both
> > (obviously you wouldn't do this deliberately, but two libraries you
> > use might).
> >
> > Incidentally, the resolved location according to Henry's rule is the
> > Base URI of the XML document.
>
> The XML spec says:
>
> "Attempts to retrieve the resource identified by a URI may be
> redirected at the parser level (for example, in an entity resolver) or
> below (at the protocol level, for example, via an HTTP Location:
> header). In the absence of additional information outside the scope of
> this specification within the resource, the base URI of a resource is
> always the URI of the actual resource returned. In other words, it is
> the URI of the resource retrieved after all redirection has occurred."
>
> As such, we should be consistent and so the resolved location must be the
> URI of the resource after the redirects have completed.

That is... you're right.  :)

-- 
--Alex Milowski
"The excellence of grammar as a guide is proportional to the paucity of the
inflexions, i.e. to the degree of analysis effected by the language
considered."

Bertrand Russell in a footnote of Principles of Mathematics

Received on Thursday, 17 January 2008 16:56:43 UTC