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Re: RDF Thrift : A binary format for RDF data

From: Andy Seaborne <andy@seaborne.org>
Date: Fri, 15 Aug 2014 20:06:17 +0100
Message-ID: <53EE5A29.1040409@seaborne.org>
To: Semantic Web <semantic-web@w3.org>


On 15/08/14 18:08, Hugh Glaser wrote:
> Thanks, Richard.
> Yeah.
> But it can be useful if you agree to mint the same MIME type as other people :-)
> Would one use "application/rdf+thrift” or "application/rdf+x-thrift”, for example?
> If I remember correctly, the x- usually indicates an unregistered type, but if the type is expected to get registered one day, then people often use the x-less one in anticipation, for future-proofing.
>
> It is especially useful to use an agreed type if you want to consume other peoples’ services/data (or let them consume yours).
> Of course I realise that is rather unusual in the SemWeb world, but it does happen ;-)


http://afs.github.io/rdf-thrift/rdf-binary-thrift.html#graphs-and-datasets

suggests:

Content type: application/rdf+thrift
File extensions: rt, trdf

	Andy

>
> Best
> Hugh
> On 15 Aug 2014, at 17:15, Richard Lewis <richard.lewis@gold.ac.uk> wrote:
>
>> Hi Hugh,
>>
>> While there is a process for registering media types, it's not
>> necessary for media types to be deposited in some central store in
>> order to build hypermedia applications using them. In fact, it's quite
>> common to mint media types specifically for certain applications.
>>
>> If your application design follows RESTful principles, there will be
>> an application state (or probably multiple states) in which the client
>> can discover the media types of resources he/she may want to
>> retrieve. So if you want to make "application/rdf+thrift" (for
>> example) available for some resources in your application, you can go
>> right ahead; just make sure you tell the client is told that it's
>> available.
>>
>> Just my 2p.
>>
>> Richard
>>
>> At Fri, 15 Aug 2014 16:36:44 +0100,
>> Hugh Glaser wrote:
>>>
>>> Hi Andy,
>>> Thanks.
>>> Looks very useful.
>>>
>>> This may be a stoopid question… :-)
>>> As I am able to use this for network data exchange, presumably I can request it using conneg over http when resolving URIs.
>>> So I would need a MIME type.
>>> I see application/x-thrift is required in http://wiki.apache.org/thrift/ThriftIntegrationConventions?highlight=%28application%2Fx-thrift%29
>>>
>>>
>>> So now the possibly stooped bit…
>>> Is there a recommended variant for RDF-Thrift?
>>> Because I might want to ask for the Thrift version of another content-type, such as non-LD JSON.
>>>
>>> It looks like the same problem as RDF+XML, since I might want another XML content-type of the document.
>>>
>>> Best
>>> Hugh
>>>
>>> On 15 Aug 2014, at 15:19, Andy Seaborne <andy@apache.org> wrote:
>>>
>>>> RDF Binary using Apache Thrift
>>>>
>>>> This is a binary format for RDF graphs, datasets and SPARQL result
>>>> sets that is fast to process. [1]
>>>>
>>>>   http://afs.github.io/rdf-thrift/
>>>>
>>>> includes the on-the-wire description as well as an implementation.
>>>>
>>>> Using Apache Thrift makes it considerably less work to integrate
>>>> into existing systems and toolkits, or to build custom
>>>> processing. [2]
>>>>
>>>> 	Comments and feedback welcome,
>>>> 	Andy
>>>>
>>>> [1] The largest gain is on reading data, with rates x3 faster than
>>>> parsing N-Triples.
>>>>
>>>> [2] Apache thrift has a large number of implementations across a
>>>> range of languages: http://wiki.apache.org/thrift/LibraryFeatures
>> --
>> -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
>> Richard Lewis
>> Computing, Goldsmiths' College
>> t: +44 (0)20 7078 5203
>> @: lewisrichard
>> http://www.transforming-musicology.org/
>> 905C D796 12CD 4C6E CBFB  69DA EFCE DCDF 71D7 D455
>> -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
>
Received on Friday, 15 August 2014 19:06:47 UTC

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