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Posted to users@jena.apache.org by Martynas Jusevičius <ma...@atomgraph.com> on 2021/05/12 09:23:52 UTC
Identity of rdf:List
Hi,
I'm wondering why ARQ (3.15.0) is turning URIs in an rdf:List into
blank nodes? I know bnodes are usually used in lists, but in this case
it's not what I expect.
Command:
sparql --data rdf_list.ttl --query identity.rq
rdf_list.ttl:
<http://s> <http://p> <http://s#content1> .
<http://s#content1> <http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://first> .
<http://s#content1> <http://www.w3.org/1999/02/22-rdf-syntax-ns#rest>
<http://s#content2> .
<http://s#content2> <http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
"<div xmlns=\"http://www.w3.org/1999/xhtml\"><p>second</p></div>"^^<http://www.w3.org/1999/02/22-rdf-syntax-ns#XMLLiteral>
.
<http://s#content2> <http://www.w3.org/1999/02/22-rdf-syntax-ns#rest>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#nil> .
identity.rq:
CONSTRUCT WHERE { ?s ?p ?o }
Result:
<http://s> <http://p> ( <http://first> "<div
xmlns=\"http://www.w3.org/1999/xhtml\"><p>second</p></div>"^^<http://www.w3.org/1999/02/22-rdf-syntax-ns#XMLLiteral>
) .
Martynas
atomgraph.com
Re: Identity of rdf:List
Posted by Martynas Jusevičius <ma...@atomgraph.com>.
https://issues.apache.org/jira/browse/JENA-2104
On Thu, May 13, 2021 at 10:10 PM Andy Seaborne <an...@apache.org> wrote:
>
> Presumably it's the Turtle pretty printer.
>
> "riot--stream=ttl rdf_list.ttl" works while
> "riot--stream=pretty rdf_list.ttl" does not.
>
> Could you raise a JIRA please?
>
> Thanks
> Andy
>
>
> On 12/05/2021 16:23, Martynas Jusevičius wrote:
> > N-Triples/N-Quads serialization does not exhibit this problem -- the
> > example is round-tripped fine.
> >
> > On Wed, May 12, 2021 at 11:23 AM Martynas Jusevičius
> > <ma...@atomgraph.com> wrote:
> >>
> >> Hi,
> >>
> >> I'm wondering why ARQ (3.15.0) is turning URIs in an rdf:List into
> >> blank nodes? I know bnodes are usually used in lists, but in this case
> >> it's not what I expect.
> >>
> >> Command:
> >>
> >> sparql --data rdf_list.ttl --query identity.rq
> >>
> >> rdf_list.ttl:
> >>
> >> <http://s> <http://p> <http://s#content1> .
> >> <http://s#content1> <http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
> >> <http://first> .
> >> <http://s#content1> <http://www.w3.org/1999/02/22-rdf-syntax-ns#rest>
> >> <http://s#content2> .
> >> <http://s#content2> <http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
> >> "<div xmlns=\"http://www.w3.org/1999/xhtml\"><p>second</p></div>"^^<http://www.w3.org/1999/02/22-rdf-syntax-ns#XMLLiteral>
> >> .
> >> <http://s#content2> <http://www.w3.org/1999/02/22-rdf-syntax-ns#rest>
> >> <http://www.w3.org/1999/02/22-rdf-syntax-ns#nil> .
> >>
> >> identity.rq:
> >>
> >> CONSTRUCT WHERE { ?s ?p ?o }
> >>
> >> Result:
> >>
> >> <http://s> <http://p> ( <http://first> "<div
> >> xmlns=\"http://www.w3.org/1999/xhtml\"><p>second</p></div>"^^<http://www.w3.org/1999/02/22-rdf-syntax-ns#XMLLiteral>
> >> ) .
> >>
> >> Martynas
> >> atomgraph.com
Re: Identity of rdf:List
Posted by Andy Seaborne <an...@apache.org>.
Presumably it's the Turtle pretty printer.
"riot--stream=ttl rdf_list.ttl" works while
"riot--stream=pretty rdf_list.ttl" does not.
Could you raise a JIRA please?
Thanks
Andy
On 12/05/2021 16:23, Martynas Jusevičius wrote:
> N-Triples/N-Quads serialization does not exhibit this problem -- the
> example is round-tripped fine.
>
> On Wed, May 12, 2021 at 11:23 AM Martynas Jusevičius
> <ma...@atomgraph.com> wrote:
>>
>> Hi,
>>
>> I'm wondering why ARQ (3.15.0) is turning URIs in an rdf:List into
>> blank nodes? I know bnodes are usually used in lists, but in this case
>> it's not what I expect.
>>
>> Command:
>>
>> sparql --data rdf_list.ttl --query identity.rq
>>
>> rdf_list.ttl:
>>
>> <http://s> <http://p> <http://s#content1> .
>> <http://s#content1> <http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
>> <http://first> .
>> <http://s#content1> <http://www.w3.org/1999/02/22-rdf-syntax-ns#rest>
>> <http://s#content2> .
>> <http://s#content2> <http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
>> "<div xmlns=\"http://www.w3.org/1999/xhtml\"><p>second</p></div>"^^<http://www.w3.org/1999/02/22-rdf-syntax-ns#XMLLiteral>
>> .
>> <http://s#content2> <http://www.w3.org/1999/02/22-rdf-syntax-ns#rest>
>> <http://www.w3.org/1999/02/22-rdf-syntax-ns#nil> .
>>
>> identity.rq:
>>
>> CONSTRUCT WHERE { ?s ?p ?o }
>>
>> Result:
>>
>> <http://s> <http://p> ( <http://first> "<div
>> xmlns=\"http://www.w3.org/1999/xhtml\"><p>second</p></div>"^^<http://www.w3.org/1999/02/22-rdf-syntax-ns#XMLLiteral>
>> ) .
>>
>> Martynas
>> atomgraph.com
Re: Identity of rdf:List
Posted by Martynas Jusevičius <ma...@atomgraph.com>.
N-Triples/N-Quads serialization does not exhibit this problem -- the
example is round-tripped fine.
On Wed, May 12, 2021 at 11:23 AM Martynas Jusevičius
<ma...@atomgraph.com> wrote:
>
> Hi,
>
> I'm wondering why ARQ (3.15.0) is turning URIs in an rdf:List into
> blank nodes? I know bnodes are usually used in lists, but in this case
> it's not what I expect.
>
> Command:
>
> sparql --data rdf_list.ttl --query identity.rq
>
> rdf_list.ttl:
>
> <http://s> <http://p> <http://s#content1> .
> <http://s#content1> <http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
> <http://first> .
> <http://s#content1> <http://www.w3.org/1999/02/22-rdf-syntax-ns#rest>
> <http://s#content2> .
> <http://s#content2> <http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
> "<div xmlns=\"http://www.w3.org/1999/xhtml\"><p>second</p></div>"^^<http://www.w3.org/1999/02/22-rdf-syntax-ns#XMLLiteral>
> .
> <http://s#content2> <http://www.w3.org/1999/02/22-rdf-syntax-ns#rest>
> <http://www.w3.org/1999/02/22-rdf-syntax-ns#nil> .
>
> identity.rq:
>
> CONSTRUCT WHERE { ?s ?p ?o }
>
> Result:
>
> <http://s> <http://p> ( <http://first> "<div
> xmlns=\"http://www.w3.org/1999/xhtml\"><p>second</p></div>"^^<http://www.w3.org/1999/02/22-rdf-syntax-ns#XMLLiteral>
> ) .
>
> Martynas
> atomgraph.com