[redland-dev] SPARQL queries in rdfproc using Virtuoso

Thu May 13 17:56:13 CEST 2010

Are there any news yet? Should I file a bug report?

On Mon, May 10, 2010 at 2:42 PM, Rimvydas <naktinis at gmail.com> wrote:

> Hi,
>
> Thank you!
>
> I used the latest ones:
> $ rdfproc -v
> 1.0.10
> and
> redland-bindings-1.0.10.1 (for Python)
>
>
> On Mon, May 10, 2010 at 2:05 PM, Hugh Williams <hwilliams at openlinksw.com>wrote:
>
>> Hi Rimvydas,
>>
>> We are going to check this against the latest Virtuoso 6.1.3127 builds.
>> Can you please confirm which version of Redland you built against 1.0.8 ,
>> 1.0.9 or other ? As the last version we tested against was 1.0.8 ...
>>
>>  Best Regards
>> Hugh Williams
>> Professional Services
>> OpenLink Software
>> Web: http://www.openlinksw.com
>> Support: http://support.openlinksw.com
>> Forums: http://boards.openlinksw.com/support
>> Twitter: http://twitter.com/OpenLink
>>
>> On 10 May 2010, at 00:39, Rimvydas wrote:
>>
>> Hi,
>>
>> I recompiled redland once again:
>> ...
>> checking for UnixODBC support... yes
>> ...
>> Triple stores enabled   : memory file hashes trees mysql sqlite postgresql
>> virtuoso
>>
>> Running the test confirms what I observed:
>>
>> $ utils/redland-virtuoso-test "dsn='VOS',user='usr',password='psw'"
>>   1: Remove all triples in <http://red> context
>> **PASSED**: removed context triples from the graph
>>   2: Add triples to <http://red> context
>> **PASSED**: add triple to context
>>   3: Print all triples in <http://red> context
>> [[
>> ]]
>> **PASSED**:
>>   4: Count of triples in <http://red> context
>> **PASSED**: graph has 6 triples
>>   5: Exec:  ARC  aa bb
>> **FAILED**: Failed to get arc
>>   6: Exec:  ARCS  aa cc
>> : matching nodes: 0
>> **PASSED**:
>>   7: Exec:  ARCS-IN  cc
>> **PASSED**: matching arcs: 0
>>   8: Exec:  ARCS-OUT  aa
>> **PASSED**: matching arcs: 0
>>   9: Exec:  CONTAINS aa bb1 cc
>> **PASSED**: the graph contains the triple
>>  10: Exec:  FIND aa - -
>> **PASSED**: matching triples: 0
>>  11: Exec:  HAS-ARC-IN cc bb
>> **FAILED**: the graph does not contain the arc
>>  12: Exec:  HAS-ARC-OUT aa bb
>> **FAILED**: the graph does not contain the arc
>>  13: Exec:  SOURCE  aa cc
>> **FAILED**: Failed to get source
>>  14: Exec:  SOURCES  bb cc
>> : matching nodes: 0
>> **PASSED**:
>>  15: Exec:  TARGET  aa bb
>> **FAILED**: Failed to get target
>>  16: Exec:  TARGETS  aa bb
>> : matching nodes: 0
>> **PASSED**:
>>  17: Exec:  REMOVE aa bb1 cc
>> **PASSED**: removed triple from the graph
>>  18: Exec:  QUERY "CONSTRUCT {?s ?p ?o} FROM <http://red> WHERE {?s ?p
>> ?o}"
>> rdf_model.c:1393: (librdf_model_query_execute) assertion failed: object
>> pointer of type librdf_query is NULL.
>> **FAILED**: Query of model with 'CONSTRUCT {?s ?p ?o} FROM <http://red>
>> WHERE {?s ?p ?o}' failed
>> rdf_query.c:390: (librdf_free_query) assertion failed: object pointer of
>> type librdf_query is NULL.
>> rdf_query.c:390: (librdf_free_query) assertion failed: object pointer of
>> type librdf_query is NULL.
>>  19: Exec1:  QUERY_AS_BINDINGS "SELECT * WHERE {graph <http://red> { ?s
>> ?p ?o }}"
>> rdf_model.c:1393: (librdf_model_query_execute) assertion failed: object
>> pointer of type librdf_query is NULL.
>> **FAILED**: Query of model with 'SELECT * WHERE {graph <http://red> { ?s
>> ?p ?o }}' failed
>> rdf_query.c:390: (librdf_free_query) assertion failed: object pointer of
>> type librdf_query is NULL.
>> rdf_query.c:390: (librdf_free_query) assertion failed: object pointer of
>> type librdf_query is NULL.
>>  20: Exec2:  QUERY_AS_BINDINGS "SELECT * WHERE {graph <http://red> { ?s
>> ?p ?o }}"
>> rdf_model.c:1393: (librdf_model_query_execute) assertion failed: object
>> pointer of type librdf_query is NULL.
>> **FAILED**: Query of model with 'SELECT * WHERE {graph <http://red> { ?s
>> ?p ?o }}' failed
>> rdf_query.c:390: (librdf_free_query) assertion failed: object pointer of
>> type librdf_query is NULL.
>> rdf_query.c:390: (librdf_free_query) assertion failed: object pointer of
>> type librdf_query is NULL.
>> =============================================
>> PASSED: 12  FAILED:  8
>>
>>
>> Maybe it is somehow related with Virtuoso's version I use (6.1.1.3127)?
>>
>>
>> On Mon, May 10, 2010 at 1:24 AM, Hugh Williams <hwilliams at openlinksw.com>wrote:
>>
>>> Hi Rymvydas,
>>>
>>> Have you built the Redland Storage Provider into your Redland RDF
>>> Framework library as detailed at:
>>>
>>>
>>> http://virtuoso.openlinksw.com/dataspace/dav/wiki/Main/VirtRDFDriverRedland
>>>
>>>  and ran the provides storage test programs to verified its operation ?
>>>
>>> Best Regards
>>> Hugh Williams
>>> Professional Services
>>> OpenLink Software
>>> Web: http://www.openlinksw.com
>>> Support: http://support.openlinksw.com
>>> Forums: http://boards.openlinksw.com/support
>>> Twitter: http://twitter.com/OpenLink
>>>
>>> On 9 May 2010, at 20:44, Rimvydas wrote:
>>>
>>> > I can add triples to virtuoso using rdfproc, but SPARQL queries just
>>> don't seem to work.
>>> >
>>> > Triple is added successfully:
>>> > $ rdfproc -r xml -s virtuoso -t "user='usr',password='psw',dsn='VOS'"
>>> somecontext add aa bb cc
>>> > rdfproc: added triple to the graph
>>> >
>>> > Triple can be found using "find" command:
>>> > $ rdfproc -r xml -s virtuoso -t "user='usr',password='psw',dsn='VOS'"
>>> somecontext find aa bb cc
>>> > Matched triple: {[aa], [bb], "cc"} with context [somecontext]
>>> > rdfproc: matching triples: 1
>>> >
>>> > However, SPARQL queries return 0 results:
>>> > $ rdfproc -s virtuoso -t "user='usr',password='psw',dsn='VOS'"
>>> somecontext query sparql - "SELECT * WHERE {?s ?p ?o}"
>>> > rdfproc: Query returned bindings results:
>>> > rdfproc: Query returned 0 results
>>> >
>>> > Am I missing something here?
>>> >
>>> > Note: I can run a similar query successfully in ODBC's ISQL like this:
>>> > CALL DB.DBA.SPARQL_EVAL('SELECT * FROM NAMED <somecontext> {GRAPH
>>> <somecontext> {?s ?p ?o}}', NULL, 0)
>>> > ...
>>> > 1 row fetched
>>> >
>>> > --
>>> > Rimvydas
>>> > _______________________________________________
>>> > redland-dev mailing list
>>> > redland-dev at lists.librdf.org
>>> > http://lists.librdf.org/mailman/listinfo/redland-dev
>>>
>>>
>>
>>
>> --
>> Rimvydas Naktinis
>>
>>
>>
>
>
> --
> Rimvydas Naktinis
>

-- 
Rimvydas Naktinis
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