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Re: [dotNetRDF-Develop] TriG parsing
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From: Rob V. <rv...@do...> - 2014-02-28 16:06:59
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Do you mean they aren't being permitted nested inside something else? That sounds like a possible bug, please file an issue or send me an example that fails Rob On 28/02/2014 11:00, "Tomasz Pluskiewicz" <tom...@gm...> wrote: >I see. The problem is with RDF lists. When in shortcut syntax they are >not recognized. > >Thanks, >Tom > >On Fri, Feb 28, 2014 at 11:42 AM, Rob Vesse <rv...@do...> wrote: >> Tom >> >> We also don't yet support the latest TriG specification so the bug may >>be >> down to using a syntax feature that we don't support yet. >> >> Rob >> >> On 28/02/2014 10:26, "Tomasz Pluskiewicz" <tom...@gm...> >> wrote: >> >>>Good news. Thanks! >>> >>>And this reminds me. We have found a bug in the TriG parser. Will >>>write an email to the other list. >>> >>>Tom >>> >>>On Fri, Feb 28, 2014 at 11:08 AM, Rob Vesse <rv...@do...> >>>wrote: >>>> Tom >>>> >>>> I have parsing support working on trunk with the NTriples and NQuads >>>> parsers defaulting to the new spec so they'll read the data in as >>>>UTF-8 >>>> rather than as ASCII. We're passing all the official RDF 1.1 tests >>>>for >>>> NTriples and NQuads but I can't guarantee there aren't any bugs >>>>introduced >>>> though the changes to support the new spec turned out to be relatively >>>> minor. >>>> >>>> The parser changes have been merged onto default and I'm continuing to >>>> work on the ntuples11 branch for the remainder of the implementation >>>>work. >>>> There's no output support for these formats yet but hopefully I'll >>>>get >>>> that done later today. >>>> >>>> Cheers, >>>> >>>> Rob >>>> >>>> On 25/02/2014 10:22, "Rob Vesse" <rv...@do...> wrote: >>>> >>>>>Tom >>>>> >>>>>Yes the original NTriples and NQuads specifications only allow ASCII, >>>>>this >>>>>was by design to make those formats canonical (since with UTF-8 you >>>>>can >>>>>potentially encode complex characters in multiple ways) and facilitate >>>>>reliable data exchange across systems that didn't necessarily support >>>>>non-ASCII data. >>>>> >>>>>Btw the reader only enforces ASCII encoding if you pass a filename >>>>>(I.e. >>>>>when it deals with opening the file stream), if you pass in a >>>>>pre-opened >>>>>StreamReader that is in a different encoding (I.e. UTF-8) it may still >>>>>parse successfully though exact behaviour is hard to know in advance. >>>>>It >>>>>will issue a warning about incorrect encoding (via the Warning event) >>>>>and >>>>>it may error out on some native UTF-8 data since the tokeniser is not >>>>>written to expect native UTF-8. >>>>> >>>>>The RDF 1.1 working group have published proposed recommendations >>>>>which >>>>>standardise NQuads & NTriples and part of the standardization is to >>>>>change >>>>>the encoding to UTF-8 but I haven't had chance to update dotNetRDF to >>>>>support the updated specs yet. >>>>> >>>>>Since this is a breaking change to spec and current API behaviour the >>>>>existing tokenizers and parsers would need to be modified so that they >>>>>can >>>>>support either the new/old specification. An approach similar to how >>>>>we >>>>>updated Turtle support where we implement the new specifications and >>>>>the >>>>>parsers default to the new spec mode and the writers implement the >>>>>new >>>>>spec but default to producing the old spec as output would be ideal. >>>>>This >>>>>is Postel's law in action if you're wondering why this is done. >>>>> >>>>>There are issues filed for these upgrades but I haven't had time to >>>>>implement them yet, I was considering trying to get these into the >>>>>next >>>>>release anyway and I have some time to start on this at the end of the >>>>>week unless you want to attempt this yourself. See CORE-356 >>>>>(http://dotnetrdf.org/tracker/Issues/IssueDetail.aspx?id=356) for >>>>>NQuads >>>>>and CORE-355 >>>>>(http://dotnetrdf.org/tracker/Issues/IssueDetail.aspx?id=355) >>>>>for NTriples which include links to the updated specifications, see >>>>>the >>>>>comments for the most up to date spec links. >>>>> >>>>>Hope this clarifies things, >>>>> >>>>>Cheers, >>>>> >>>>>Rob >>>>> >>>>>On 25/02/2014 10:06, "Tomasz Pluskiewicz" >>>>><tom...@gm...> >>>>>wrote: >>>>> >>>>>>Hi Rob >>>>>> >>>>>>A colleague of mine has just discovered that the NQuadsParser reads >>>>>>file with ASCII encoding while all other use UTF-8. >>>>>> >>>>>>I understand that this is as described in the specification but why >>>>>>is >>>>>>that exactly? >>>>>> >>>>>>And what do you think about adding a option to the parsers so that >>>>>>alternative encodings can be used for reading dataset files? >>>>>> >>>>>>Cheers, >>>>>>Tom >>>>>> >>>>>>--------------------------------------------------------------------- >>>>>>-- >>>>>>-- >>>>>>- >>>>>>---- >>>>>>Flow-based real-time traffic analytics software. Cisco certified >>>>>>tool. >>>>>>Monitor traffic, SLAs, QoS, Medianet, WAAS etc. with NetFlow Analyzer >>>>>>Customize your own dashboards, set traffic alerts and generate >>>>>>reports. >>>>>>Network behavioral analysis & security monitoring. All-in-one tool. >>>>>>http://pubads.g.doubleclick.net/gampad/clk?id=126839071&iu=/4140/ostg >>>>>>.c >>>>>>lk >>>>>>t >>>>>>rk >>>>>>_______________________________________________ >>>>>>dotNetRDF-develop mailing list >>>>>>dot...@li... >>>>>>https://lists.sourceforge.net/lists/listinfo/dotnetrdf-develop >>>>> >>>>> >>>>> >>>>> >>>>> >>>>>---------------------------------------------------------------------- >>>>>-- >>>>>-- >>>>>---- >>>>>Flow-based real-time traffic analytics software. Cisco certified tool. >>>>>Monitor traffic, SLAs, QoS, Medianet, WAAS etc. with NetFlow Analyzer >>>>>Customize your own dashboards, set traffic alerts and generate >>>>>reports. >>>>>Network behavioral analysis & security monitoring. All-in-one tool. >>>>>http://pubads.g.doubleclick.net/gampad/clk?id=126839071&iu=/4140/ostg. >>>>>cl >>>>>kt >>>>>rk >>>>>_______________________________________________ >>>>>dotNetRDF-develop mailing list >>>>>dot...@li... >>>>>https://lists.sourceforge.net/lists/listinfo/dotnetrdf-develop >>>> >>>> >>>> >>>> >>>> >>>> >>>>----------------------------------------------------------------------- >>>>-- >>>>----- >>>> Flow-based real-time traffic analytics software. Cisco certified tool. >>>> Monitor traffic, SLAs, QoS, Medianet, WAAS etc. with NetFlow Analyzer >>>> Customize your own dashboards, set traffic alerts and generate >>>>reports. >>>> Network behavioral analysis & security monitoring. All-in-one tool. >>>> >>>>http://pubads.g.doubleclick.net/gampad/clk?id=126839071&iu=/4140/ostg.c >>>>lk >>>>trk >>>> _______________________________________________ >>>> dotNetRDF-develop mailing list >>>> dot...@li... >>>> https://lists.sourceforge.net/lists/listinfo/dotnetrdf-develop >>> >>>------------------------------------------------------------------------ >>>-- >>>---- >>>Flow-based real-time traffic analytics software. Cisco certified tool. >>>Monitor traffic, SLAs, QoS, Medianet, WAAS etc. with NetFlow Analyzer >>>Customize your own dashboards, set traffic alerts and generate reports. >>>Network behavioral analysis & security monitoring. All-in-one tool. >>>http://pubads.g.doubleclick.net/gampad/clk?id=126839071&iu=/4140/ostg.cl >>>kt >>>rk >>>_______________________________________________ >>>dotNetRDF-develop mailing list >>>dot...@li... >>>https://lists.sourceforge.net/lists/listinfo/dotnetrdf-develop >> >> >> >> >> >> >>------------------------------------------------------------------------- >>----- >> Flow-based real-time traffic analytics software. Cisco certified tool. >> Monitor traffic, SLAs, QoS, Medianet, WAAS etc. with NetFlow Analyzer >> Customize your own dashboards, set traffic alerts and generate reports. >> Network behavioral analysis & security monitoring. All-in-one tool. >> >>http://pubads.g.doubleclick.net/gampad/clk?id=126839071&iu=/4140/ostg.clk >>trk >> _______________________________________________ >> dotNetRDF-develop mailing list >> dot...@li... >> https://lists.sourceforge.net/lists/listinfo/dotnetrdf-develop > >-------------------------------------------------------------------------- >---- >Flow-based real-time traffic analytics software. Cisco certified tool. >Monitor traffic, SLAs, QoS, Medianet, WAAS etc. with NetFlow Analyzer >Customize your own dashboards, set traffic alerts and generate reports. >Network behavioral analysis & security monitoring. All-in-one tool. >http://pubads.g.doubleclick.net/gampad/clk?id=126839071&iu=/4140/ostg.clkt >rk >_______________________________________________ >dotNetRDF-develop mailing list >dot...@li... >https://lists.sourceforge.net/lists/listinfo/dotnetrdf-develop |
