On Sun, 27 Aug 2017 11:54:36 +0200, Lorenz B.
<[email protected]> wrote:
Hello Baran,
Kind regards,
Lorenz
I think statements like
On Fri, 25 Aug 2017 11:52:46 +0200, Lorenz Buehmann
<[email protected]> wrote:
.... Inferencing and querying are totally different
things. So why are you thinking about refactoring the whole project?
or in next posting
Again, why do you compare those two Jena mechanisms? What is the
expected outcome?
are generally spoken confining snd mistakable for Jena-users making
thoughts about a proper design.
Assume i have following dev-scenario:
A Jena-app with InfModel + Rules-List -> output RDF -> TDB/Fuseki -> A
Query-UI
(Query UI contains a lot of queries which users activate with a mouse
click and get responses presented in the same UI.)
Now you i can try to add rules to my rules-list so that i can
formulate some of the queries of my Query-UI in a more leightweight
way with better performance.
(Or vice versa i change some of my queries so that i can delete some
rules of my rules-list which is not so interesting.)
The question here was to compare rules vs. SPARQL CONSTRUCT queries to
modify an existing dataset. Indeed, the combination of both might be
more powerful, although it remains open what part of the semantics to
cover by which mechanism.
Nevertheless, it's totally use case dependent - what kind of rules, how
many rules, size of the dataset, is the data volatile (forward chaining
vs. backward chaining), what kind of queries, and so on and so forth.
Good luck with the project.
Last not least, i would still like to add to this:
Experimenting with CONSTRUCT-queries can be in fact a relative direct help
if you are struggling with Jena-rules + SPARQL relations in a 'teased'
tripples-level although you perhaps never use CONSTRUCT-queries in the
product-level of your app.
Thanks to tina sani starting this thread-title 'SPRQL vs Jena rules'. This
stuff hasn't been enough handled in this listing as it deserves. And i am
also to blame for this because i didn't have had the aggressiv energy and
courage to put the right postings though i have had a lot of problems and
some very encouring app cases. What a pity when i look back.
thanks, baran
PS: I wonder why Dave doesn't comment in this thread. Perhaps because he
thinks, Lorenz is ok, i myself cannot stand the low-level-knowledge of the
users in this thread or no matter what you do, by some heavy data-input an
app with InfModel would hang anyway? Lorenz is ofcourse ok, but i 'guess'
Jena users are also very curious about Dave's comments...
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