Re: HTML+RDFa 1.1 Typo?

I will certainly do that.  I fear my implementation is passing the tests we
have but copying won't work in all situations.  I'll get back to you all on
this.


On Thu, May 23, 2013 at 9:24 AM, Gregg Kellogg <gregg@greggkellogg.net>wrote:

> On May 23, 2013, at 8:59 AM, Alex Milowski <alex@milowski.com> wrote:
>
> OK.  I didn't add the type predicate in my implementation and so that
> seemed odd.  I now understand the copy pattern would generally apply to the
> type from the pattern.
>
> Reading this section again, I am concerned that the tests do not properly
> cover this feature.  Specifically, I think that pattern chaining isn't
> quite covered.
>
> Also, the clean pattern seems to imply that subjects with rdfa:copy
> predicates involving targets that do not exist would have their rdfa:copy
> predicate remain in the graph.  I don't see a test that covers that
> situation.
>
> Test 0327 covers chaining when there is a blank node within the pattern.
>  That blank node will have its own subject and so any single-pass algorithm
> will catch it.
>
> If you remove the blank node in 0327, an single pass won't be sufficient
> depending on the order of processing.
>
>
> Depends on how you implement it. If you collect all references and
> patterns in a buffer, you can then iterate over those after the document is
> processed; you're performing multiple passes, but only over the buffered
> references and patterns.
>
> That said, if there are things you don't think are adequately tested,
> consider contributing new tests to the suite. We probably want to tie that
> up this week, though.
>
> Gregg
>
> For example:
>
> <!DOCTYPE html>
> <html>
> <head>
>   <base href="http://example.com/"/>
> </head>
> <body>
>   <div typeof="schema:Person">
>     <link property="rdfa:copy" resource="_:a"/>
>     <link property="rdfa:copy" resource="_:b"/>
>   </div>
>   <p resource="_:a" typeof="rdfa:Pattern">Name: <span
> property="schema:name">Amanda</span></p>
>   <div resource="_:b" typeof="rdfa:Pattern">
>       <link property="rdfa:copy" resource="_:c"/>
>   </div>
>   <div resource="_:c" typeof="rdfa:Pattern">
>    <p><span property="schema:e-mail">amanda@example.com</span></p>
>   </div>
> </body>
> </html>
>
>
> On Thu, May 23, 2013 at 1:50 AM, Niklas Lindström <lindstream@gmail.com>wrote:
>
>> Hi Alex,
>>
>> That's actually intentional. The last rule on the right side, "?target
>> ?predicate ?object", takes care also of removing "?target rdf:type
>> rdfa:Pattern" (since it removes all statements about ?target).
>>
>> The rule to remove "?subject rdf:type rdfa:Pattern" is needed since
>> after the pattern has been copied entirely, the rdfa:Pattern type statement
>> has been copied too, which is not the intent.
>>
>> A more effective implementation would not add that triple in the first
>> place only to remove it, but I believe this was the simplest way to express
>> these rules in a familiar notation for inference. (Hence the notes in the
>> spec to make it clear that you're allowed to apply any algorithm you need
>> as long as the outcome is the same.)
>>
>> Cheers,
>> Niklas
>>
>>
>>
>> On Thu, May 23, 2013 at 6:22 AM, Alex Milowski <alex@milowski.com> wrote:
>>
>>> In section 3.5.1, I believe the pattern-clean rule is meant to have on
>>> the right side:
>>>
>>> ?target rdf:type rdfa:Pattern
>>>
>>> instead of:
>>>
>>> ?subject rdf:type rdfa:Pattern
>>>
>>> --
>>> --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
>>>
>>
>>
>
>
> --
> --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
>
>
>


-- 
--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, 23 May 2013 16:29:00 UTC