25 Apr
2007
25 Apr
'07
11 a.m.
On 25/04/07, Kake L Pugh <kake(a)earth.li> wrote:
On Tue 24 Apr 2007, Earle Martin
<openguides(a)downlode.org> wrote:
We haven't talked about specific formats per se; what we're mostly
interested in is coordinating namespace usage. I've certainly got
nothing against JSON output, and it might even be nice to offer
N-Triples (http://www.w3.org/TR/rdf-testcases/#ntriples) as well. Your
recent change to using templates for the output theoretically makes it
very easy for us to implement.
Some examples of our output in different formats using Dave Beckett's
excellent "triplr" triple-converter:
http://triplr.org/json;pretty/http://london.openguides.org/index.cgi?id=Roy…
http://triplr.org/ntriples/http://london.openguides.org/index.cgi?id=Royal_…
--
Earle Martin
http://downlode.org/
http://purl.org/net/earlemartin/
I'm looking forward to flying the OG flag at
RoCoCoCamp as well as a
long-overdue serious RDF talk with Evan.
Do you know if he's been thinking about outputs other than RDF? I was
wondering if OpenGuides should perhaps have additional output formats
that are a little more programmer-friendly - maybe JSON? These could
be optional depending on whether the admin has the relevant Perl
modules installed. 
25 Apr
25 Apr
3:32 p.m.
On Wed 25 Apr 2007, Earle Martin <openguides(a)downlode.org> wrote:
Your recent change to using templates for the output
theoretically
makes it very easy for us to implement.
We don't even need templates for JSON output; there's a Perl module
(called JSON, unsurprisingly) that turns a Perl object directly into JSON.
Some examples of our output in different formats using
Dave Beckett's
excellent "triplr" triple-converter:
http://triplr.org/json;pretty/http://london.openguides.org/index.cgi?id=Roy…
Hm, that's not really what I meant by JSON output. That's RDF output
wearing different clothes. What I was thinking of was something along
these lines:
{
"name" : "Red Lion and Sun, N6 4BE",
"uri" :
"http://london.randomness.org.uk/wiki.cgi?id=Red_Lion_And_Sun,_N6_4BE;format=json"
"wgs84_lat" : 51.572545,
"wgs84_long" : -0.148517,
"locales" : [ "Highgate", "N6" ],
"categories" : [ "Pubs", "Pub Food", "Beer
Gardens" ],
}
Something that can trivially be turned back into an object without the
need to parse RDF and work out what all the triples represent.
Or even:
{
"name" : "Red Lion and Sun, N6 4BE",
"uri" :
"http://london.randomness.org.uk/wiki.cgi?id=Red_Lion_And_Sun,_N6_4BE;format=json"
"wgs84_lat" : 51.572545,
"wgs84_long" : -0.148517,
"locales" : [ "Highgate", "N6" ],
"categories" : [ "Pubs", "Pub Food", "Beer
Gardens" ],
"nearby" : [
{
"distance" : 153,
"uri" :
"http://london.randomness.org.uk/wiki.cgi?id=Wrestlers,_N6_4AA;format=json"
},
{
"distance" : 311,
"uri" :
"http://london.randomness.org.uk/wiki.cgi?id=Flask,_N6_6BU;format=json"
},
{
"distance" : 589,
"uri" :
"http://london.randomness.org.uk/wiki.cgi?id=Highgate_Station;format=json"
}
]
}
Kake
3:42 p.m.
On 25/04/07, Kake L Pugh <kake(a)earth.li> wrote:
Hm, that's not really what I meant by JSON output.
That's RDF output
wearing different clothes.
Ah, I'm so used to thinking of RDF as RDF/XML.
What I was thinking of was something along these
lines:
[snip]
Something that can trivially be turned back into an object without the
need to parse RDF and work out what all the triples represent.
Kind of like YAML, right? A serialization format, I think they call
it. Sure, absolutely. The more output, the merrier.
--
Earle Martin
http://downlode.org/
http://purl.org/net/earlemartin/
3:47 p.m.
On Apr 25, 2007, at 9:32 AM, Kake L Pugh wrote:
On Wed 25 Apr 2007, Earle Martin
<openguides(a)downlode.org> wrote:
There is JSON::Any which (attempts) to normalize the APIs of the half
dozen JSON modules on CPAN.
*cough* and patches in Trac that I think implement this for a
sufficiently old version of OG.
Though I'm not sure how much of this works the way you want. I wrote
it at Nacho's request for the Victoria Guide.
-Chris
Your recent change to using templates for the
output theoretically
makes it very easy for us to implement.
We don't even need templates for JSON output; there's a Perl module
(called JSON, unsurprisingly) that turns a Perl object directly
into JSON.
4:15 p.m.
On Wed 25 Apr 2007, Chris Prather <chris(a)prather.org> wrote:
There is JSON::Any which (attempts) to normalize the
APIs of the half
dozen JSON modules on CPAN.
Hm, I'm trying to work out if that would actually help us or not - I
can see it would definitely help if we added a JSON dependency, but I
was thinking along the lines of only sending out JSON output if we
could find a JSON module. I suppose we could refuse to do JSON unless
JSON::Any was installed... that might be the best bet.
*cough* and patches in Trac that I think implement
this for a
sufficiently old version of OG.
I think that assuming we use JSON::Any, the hard part is not going to
be actually implementing this, but deciding what should go into the
JSON output for each thing - e.g. the node output from my previous
mail - what's useful/relevant? There should also be JSON output for
categories and locales, listing everything in that category/locale.
The main question, I think, is how much info we put into each mouthful
of output; for example, the output for "Category Pubs" could be as
simple as a list of format=json URLs; someone wanting more info could
then fetch each URL individually and get the data from there - but
that's a lot of hits on the webserver. We might be able to avoid some
of those hits by returning more info in the Category Pubs JSON object,
for example the name of the node, the other categories that it's in,
its lat/long, its locales. This would be at the expense of more
database activity on the original request.
</braindump>
Kake
5882
days inactive
5882
days old
openguides-dev@lists.openguides.org
4 comments
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participants (3)
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Chris Prather -
Earle Martin -
Kake L Pugh