Hello rumi,
thank you for your response, i tried some things but I still have the
inference context problem :(
I started again, using a new instance of virtuoso from scratch|. I
installed ODS and tested some of the methods on the ODS REST
Interface, specially the ones that make use of sparql, I was happy
because they worked.
Then I started to add some custom methods, one of them used
exec_sparql(), is the following one:
create procedure ODS.ODS_API."univrz.test.customquery" (in pattern
varchar) __soap_http 'text/xml'
{
declare q varchar;
declare exit handler for sqlstate '*' {
rollback work;
return ods_serialize_sql_error (__SQL_STATE, __SQL_MESSAGE);
};
q := sprintf (
'prefix foaf: <http://xmlns.com/foaf/0.1/> '||
'select distinct ?a ?c where {?a foaf:depiction ?c} limit 50 ',
sioc..get_graph(), pattern);
exec_sparql (q);
return '';
}
;
grant execute on ODS.ODS_API."univrz.test.customquery" to ODS_API;
(it doesnt use pattern yet).
and then when I try to execute it, (univrz.test.customquery) I get the
following error:
<failed>
<code>-500</code>
<message>RDF..: Inference context http://www.univrz.com:80/dataspace
does not exist</message>
</failed>
Its the same error with my other instance, my surprise began when I
looked back at the Interface methods present in
the ODS REST API, and they stopped working. (e.g.:
ODS.ODS_API."user.search"), they throw now the same -500 error as my
method.
my sys_rdf_schema shows the following:
RS_NAME RS_URI RS_G
VARCHAR NOT NULL VARCHAR NOT NULL VARCHAR
_______________________________________________________________________________
http://www.univrz.com:80/dataspace http://www.univrz.com:80/dataspace/inf NULL
virtrdf-label virtrdf-label NULL
Today, I dont know what's happening,
Thank you in advance,
Cristian
2009/2/9 Rumi Tsekova <rtsek...@openlinksw.com>:
> Hi Cristian,
>
>> Hello!
>>
>> I'm developing some extensions to the ODS REST API, and i get an
>> error when i make use of the "exec_sparql (q);" procedure, present on
>> the ODS controllers. When i try to invoke it, i get the following
>> error:
>>
>> <failed>
>> <code>-500</code>
>> <message>RDF..: Inference context http://www.univrz.com:80/dataspace
>> does not exist</message>
>> </failed>
>
> Could you please check in the sys_rdf_schema if there is record for the
> inference in question?
>
> i.e. : select * from sys_rdf_schema;
>
> If there is no, then you should
>
> - install ods
> - execute:
>
> use sioc;
> DB.DBA.TTLP (sioct_n3 (), '', get_graph() || '/inf');
> DB.DBA.RDFS_RULE_SET (get_graph (), get_graph() || '/inf');
>
>
> Best Regards,
> Rumi
>
>>
>> My inference context is http://www.univrz.com/dataspace (i think - i'm
>> just starting to explore this world), when i make use of the other
>> methods, like DB.DBA.SPARQL_EVAL_TO_ARRAY i can see the results, but
>> i'm interested in using the ODS api (like the exec_sparql(q)
>> procedure) to keep consistency.
>>
>> Some methods from the published Rest Interface, like
>> ODS.ODS_API."instance.get.id"or ODS.ODS_API."user.get" show the same
>> problem. Maybe is a configuration issue, but i dont know yet.
>>
>> Regards,
>>
>> Cristian
>>
>>
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