SelectBuilder gives you more control because you are building the query
directly. The downside is that this requires you to understand how SPARQL
queries get translated into ARQs internal AST in order to be able to build
queries.
Also with SelectBuilder you don't have to parse the query so building a query
with SelectBuilder may be more performant depending on the complexity of your
queries.
So I would say ParameterizedSparqlString is better for simple queries but
provides less control and performance than SelectBuilder.
Rob
On 25/03/2021, 23:13, "graham" <gra...@orangedogsoftware.com> wrote:
I have a question on ParameterizedSparqlString. I have been using
SelectBuilder to build select queries. Is ParameterizedSparqlString any
better or worse than SelectBuilder since they seem to do roughly the
same thing.
thanks
graham
On 25/03/21 10:05 pm, Rob Vesse wrote:
> ParameterizedSparqlString works by simple textual substitution into the
provided query string so you get a more specific query with your parameters
>
> It does not have any relationship to joins.
>
> I guess what you may be asking is how it compares to other methods for
providing initial bindings e.g. adding VALUES to a query which would be
evaluated as a Join? The answer there is that it isn't really a fair
comparison, a parameterized query vs one using VALUES might yield very
different query execution plans so perform very differently. As with all
queries it's going to depend on both your queries and your data
>
> Rob
>
> On 25/03/2021, 08:31, "Samita Bai / PhD CS Scholar @ City Campus"
<s...@iba.edu.pk> wrote:
>
> Hello everyone,
>
> I have used Parameterized SPARQL String for providing initial
solution bindings for query execution. I need to document my technique; can
anyone help me how can we compare Parameterized SPARQL String with joins?
>
> Is Parameterized SPARQL string type of join or its entirely
different?
>
> Please someone help me out.
>
>
> Regards,
> Samita Bai
>
>
> P : Please consider the environment before printing this e-mail
>
> ________________________________
>
> CONFIDENTIALITY / DISCLAIMER NOTICE: This e-mail and any attachments
may contain confidential and privileged information. If you are not the
intended recipient, please notify the sender immediately by return e-mail,
delete this e-mail and destroy any copies. Any dissemination or use of this
information by a person other than the intended recipient is unauthorized and
may be illegal.
>
> ________________________________
>
>
>
>
--
The Electric Monk was a labour-saving device, like a dish
washer or a video recorder. Dishwashers washed tedious dishes
for you, ... video recorders watched tedious television for
you, ... Electric Monks believed things for you.
