On Sep 7, 2012, at 11:38 AM, Lee Feigenbaum wrote:
> On 9/7/2012 11:30 AM, Steve Harris wrote:
>> 4store and 5store - by default the default graph is the union of the named
>> graphs, but if you do e.g.
>>
>> INSERT DATA { <s> <p> <o> }
>>
>> then <s> <p> <o> will get written into a "special" named graph.
>>
>> There's a flag you can use (in both I think) to get the "special" graph to
>> behave like the unnamed graph.
>>
>> - Steve
>>
>> PS for the record, I still think the whole unnamed/default graph thing is
>> silly.
>
> :-) Me too, that's why I've been surprised to learn that most named graph
> stores include one :-)
As the author of one of these systems I can say that I certainly wouldn't do it
this way again. In my (RDF::Query's) case, it's a result of the API growing and
changing over ~10 years from something rather trivial with early support for
RDQL to full SPARQL 1.1 support today. In new projects, I've been going with
the more obvious approach of having a pure quadstore with one graph identified
as the default graph during dataset construction.
.greg
