- From: Gregg Kellogg <gregg@kellogg-assoc.com>
- Date: Sat, 16 Aug 2014 15:42:21 -0700
- To: Andy Seaborne <andy@seaborne.org>
- Cc: "semantic-web@w3.org" <semantic-web@w3.org>
- Message-ID: <CABuiOSriKEWe2SL7gbt2uKhwVNQ0W8yT_8w3-Op2r_WHgs92RA@mail.gmail.com>
On 15/08/14 20:48, Tim Berners-Lee wrote: > Do not use x- >> It was thought a good idea, now not. It just leads to pain when you drop >> or x- (or decide never to) >> >> >> Where is the actual on the wire format for thrift defined? Does it look >> like ANS/1 ? >> > > Tim, > > RDF Thrift uses the "compact" Thrift protocol (their terminology) wire > format is defined > > https://issues.apache.org/jira/browse/THRIFT-110 > --> > https://issues.apache.org/jira/secure/attachment/ > 12398366/compact-proto-spec-2.txt > > and in the open source code: > > Python: > https://github.com/apache/thrift/blob/master/lib/py/src/ > protocol/TCompactProtocol.py > > Java: > https://github.com/apache/thrift/blob/master/lib/java/ > src/org/apache/thrift/protocol/TCompactProtocol.java > > Ruby: > https://github.com/apache/thrift/blob/master/lib/rb/lib/ > thrift/protocol/compact_protocol.rb Thanks for the pointer to the Ruby implementation, Andy. I'll add an RDF Thrift reader/writer for Ruby RDF.rb to my todo list. Is there a test suite? Gregg > and more languages at; > https://github.com/apache/thrift/tree/master/lib > > > The RDF Thrift usage is at: > > http://afs.github.io/rdf-thrift/rdf-binary-thrift.html# > details-of-thrift-encoding > > If any Thrift expert has suggestions better ways to use Thrift then please > say so! > > Andy > > >> Tim >> >> >> On 2014-08 -15, at 13:08, Hugh Glaser <hugh@glasers.org> 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 ;-) >>> >>> 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 >>>> -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= >>>> >>> >>> -- >>> Hugh Glaser >>> 20 Portchester Rise >>> Eastleigh >>> SO50 4QS >>> Mobile: +44 75 9533 4155, Home: +44 23 8061 5652 >>> >>> >>> >>> >>> >> >
Received on Saturday, 16 August 2014 22:42:49 UTC