[redland-dev] rdfproc error with parse-stream option

[Renaud Delbru]

Hi,

 

I make a clean install of all the last redland library for ubuntu breezy
(redland 1.0.3, raptor 1.4.9, rasqal-0.9.12).

All work fine now. Thanks dave.

 

But, I have found an old message on the mailing list
http://lists.gnomehack.com/pipermail/redland-dev/2005-April/000868.html
where you precise that it will be possible to query contexts with rasqal.
The new version (0.9.12) implements this feature or not ?

If it is the case, can you give me an example how to use this feature.

 

Thanks.

 

-- 

Renaud Delbru

 

  _____  

From: redland-dev-bounces at lists.librdf.org
[mailto:redland-dev-bounces at lists.librdf.org] On Behalf Of Renaud Delbru
Sent: 30 April 2006 15:13
To: redland-dev at lists.librdf.org
Subject: [redland-dev] rdfproc error with parse-stream option

 

Hi

 

I have tried to manage context with redland. Using rdfproc (redland
1.2.0.1), I create parse a file to add triples in a context :

 

$ rdfproc test-store parse-stream test-person.rdf rdfxml
'http://m3pe.org/test#' 'my_context' -c

 

This works correctly, but when I try to query the database to retrieve
context name :

 

$ rdfproc test-store query sparql 'http://m3pe.org/test#' 'SELECT ?c WHERE {
GRAPH ?c { ?s ?p ?o } }' -c

 

I have an empty result.

 

I have updated to redland 1.0.3, raptor 1.4.9, rasqal-0.9.11 (on ubuntu
breezy) and now, when I try to parse a file with :

 

$ rdfproc test-store parse-stream test-person.rdf rdfxml
'http://m3pe.org/test#' 'my_context' -c

 

I have the error :

rdfproc: Error - Unknown Raptor predicate identifier type 1

...

rdfproc: Error - Unknown Raptor predicate identifier type 1

*** glibc detected *** double free or corruption (!prev): 0x0805f570 ***
Abandon

 

I use rdfproc to set up my data test set, and now I cannot continue to load
triples in a specific context. Do you have a solution ?

 

I try actually to manage redland context in ActiveRDF. I can add and delete
triple in a specific context but  the only things which doesn't work for the
moment is to query (with model.query_execute of the ruby binding) a specific
context. It seems to me that the only way is to use the GRAPH matching of
sparql. I have wrong ?

I have just seen on http://librdf.org/rasqal/TODO.html#sparql that sparql
doesn't manage Restricting
<http://www.w3.org/TR/2005/WD-rdf-sparql-query-20051123/#restrictByLabel>
by Graph IRI. Do you have any other solution to get query results only for a
specific context, and no for the whole graph ?

 

Thanks.

 

-- 

Renaud Delbru 

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