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Posted to users@jena.apache.org by Jérôme <je...@unicaen.fr> on 2011/09/08 10:23:01 UTC

Remote "explain" method call

Hi,

I'm currently working with JOSEKI.

My client (a web application) does:
         [...]
         QueryExecution qExec = QueryExecutionFactory.sparqlService(url, 
query);
         ResultSet set = qExec.execSelect();
         [...]

At the server side, search(query) is called on a IndexSearcher object.

I would like to call the "explain" method instead of the "search" one.

I have not found how to do it with the Jena API.

Should I implement my own method? By adding an "explain" method in the 
IndexLarq class?

Thank you.

Jérôme

Re: Remote "explain" method call

Posted by Paolo Castagna <ca...@googlemail.com>.
Hi Jérôme,
the feature you need is not currently implemented in LARQ.

However, why don't you create a JIRA issue (New Feature|Improvement) for it?
https://issues.apache.org/jira/browse/JENA

If you have a suggestion or, even better, a patch for it attach that to the JIRA.

I'll look at it later.

Thanks,
Paolo

Jérôme wrote:
> Hi,
> 
> I'm currently working with JOSEKI.
> 
> My client (a web application) does:
>         [...]
>         QueryExecution qExec = QueryExecutionFactory.sparqlService(url,
> query);
>         ResultSet set = qExec.execSelect();
>         [...]
> 
> At the server side, search(query) is called on a IndexSearcher object.
> 
> I would like to call the "explain" method instead of the "search" one.
> 
> I have not found how to do it with the Jena API.
> 
> Should I implement my own method? By adding an "explain" method in the
> IndexLarq class?
> 
> Thank you.
> 
> Jérôme
> 
>

Re: Remote "explain" method call

Posted by Paolo Castagna <ca...@googlemail.com>.

Andy Seaborne wrote:
> Paolo - does LARQ provide access to explain() ?

No, currently not.

> 
> Jérôme - access to the Lucene index is property functions.  Niether
> Joseki nor ARQ have any specific understanding of this particular kind
> of index.  It would need a property function to expose the explain
> functionality (which your app could add although it's not a simple
> extension point in Joseki).
> 
>     Andy
> 
> 
> 
> On 08/09/11 09:23, Jérôme wrote:
>> Hi,
>>
>> I'm currently working with JOSEKI.
>>
>> My client (a web application) does:
>> [...]
>> QueryExecution qExec = QueryExecutionFactory.sparqlService(url, query);
>> ResultSet set = qExec.execSelect();
>> [...]
>>
>> At the server side, search(query) is called on a IndexSearcher object.
>>
>> I would like to call the "explain" method instead of the "search" one.
>>
>> I have not found how to do it with the Jena API.
>>
>> Should I implement my own method? By adding an "explain" method in the
>> IndexLarq class?
>>
>> Thank you.
>>
>> Jérôme
>>
>>

Re: Remote "explain" method call

Posted by Andy Seaborne <an...@epimorphics.com>.
Paolo - does LARQ provide access to explain() ?

Jérôme - access to the Lucene index is property functions.  Niether 
Joseki nor ARQ have any specific understanding of this particular kind 
of index.  It would need a property function to expose the explain 
functionality (which your app could add although it's not a simple 
extension point in Joseki).

	Andy



On 08/09/11 09:23, Jérôme wrote:
> Hi,
>
> I'm currently working with JOSEKI.
>
> My client (a web application) does:
> [...]
> QueryExecution qExec = QueryExecutionFactory.sparqlService(url, query);
> ResultSet set = qExec.execSelect();
> [...]
>
> At the server side, search(query) is called on a IndexSearcher object.
>
> I would like to call the "explain" method instead of the "search" one.
>
> I have not found how to do it with the Jena API.
>
> Should I implement my own method? By adding an "explain" method in the
> IndexLarq class?
>
> Thank you.
>
> Jérôme
>
>