so far I can state two problems :
1/ in a fresh empty V7 build Version 7.2.2-rc1.3215-pthreads as of Nov
23 2015,
using bulkloader,
ld_dir('/LN_Hupe', '*.nt',
'http://www.hub.abes.fr/springer/ebooksLN2011/SPR_EBOOK_642_19NOV');
rdf_loader_run();
on a simple file :
<http://www.hub.abes.fr/springerB/ebook/3540192379/chapter/37/w>
<http://dbpedia.org/ontology/subtitle> "Part III: a sharp result on the
lack of uniform
stabilization"^^<http://www.w3.org/1999/02/22-rdf-syntax-ns#XMLLiteral>
will store the object part of the triple as a
http://www.w3.org/2001/XMLSchema#string literal instead of
http://www.w3.org/1999/02/22-rdf-syntax-ns#XMLLiteral (but the string is
displayed in a correct manner)
2/ something in my virtuoso.db V6 Version 6.1.6.3127-pthreads as of Oct
19 2012 is causing the same problem when i try to use it as the
starting point of my V7 installation,
+ it adds misinterpretation of the literal string and decodes it with
spurious chars.
Thomas Michaux
Le 09/12/2015 10:15, Thomas Michaux a écrit :
-------- Message transféré --------
Sujet : Re: [Virtuoso-users] Fwd: Re: Problems using +backup-dump
from Virtuoso 6 to Virtuoso 7 with +restore-crash-dump
Date : Tue, 8 Dec 2015 19:16:27 +0100
De : Thomas Michaux <mich...@abes.fr>
Pour : Hugh Williams <hwilli...@openlinksw.com>
Copie à : virtuoso-users@lists.sourceforge.net
<virtuoso-users@lists.sourceforge.net>, Yann NICOLAS <nico...@abes.fr>
ok last one for today,
I found my last test wasn't really "unit testing", because i did not
start from an empty V7 db !
I suspect I mixed a V6 conductor (present in virtuoso.db copy) my V7
RDF instance !
So I've done another test importing from a graph dump V6 in a clean,
empty V7 and this time things change a bit as we do not have spurious
chars at the beginning of the strings when querying ! (but still
problem with the return of DATATYPE() function anyway) :
select ?graph ?titre (DATATYPE(?titre ))from
<http://www.hub.abes.fr/springer/ebooksLN2011/SPR_EBOOK_642_19NOV> where {
GRAPH ?graph {
<http://www.hub.abes.fr/springerB/ebook/3540192379/chapter/37/w>
<http://dbpedia.org/ontology/subtitle> ?titre
}
}
graph titre callret-2
http://www.hub.abes.fr/springer/ebooksLN2011/SPR_EBOOK_642_19NOV
"Part III: a sharp result on the lack of uniform stabilization"
http://www.w3.org/2001/XMLSchema#string
Thomas
Le 08/12/2015 17:47, Thomas Michaux a écrit :
one more bad news :(
this time I tried with the dump_one_graph_nt procedure from V6
(because in V6 dump_nquads() calls the http_nquad() function which is
not available)
I then checked with grep that the dump file for the graph (72Mo)
contained the XMLLiteral literals, and it has, here are few examples
lines :
<http://www.hub.abes.fr/springerB/ebook/3540192379/chapter/37/w>
<http://dbpedia.org/ontology/subtitle> "Part III: a sharp result on
the lack of uniform
stabilization"^^<http://www.w3.org/1999/02/22-rdf-syntax-ns#XMLLiteral> .
<http://www.hub.abes.fr/springerB/ebook/3540192379/chapter/86/w>
<http://dbpedia.org/ontology/subtitle> "The existence and unicity
problem for
bases"^^<http://www.w3.org/1999/02/22-rdf-syntax-ns#XMLLiteral> .
<http://www.hub.abes.fr/springerB/ebook/3540544089/chapter/22/w>
<http://dbpedia.org/ontology/subtitle> "System of non linear ordinary
differential
equations"^^<http://www.w3.org/1999/02/22-rdf-syntax-ns#XMLLiteral> .
<http://www.hub.abes.fr/springerB/ebook/3540761691/chapter/11/w>
<http://dbpedia.org/ontology/subtitle> "Experiences in LAN and WAN
environments"^^<http://www.w3.org/1999/02/22-rdf-syntax-ns#XMLLiteral> .
Then, I imported in V7 from this file using bulkloader :
ld_dir('/LN_Hupe', '*.nt',
'http://www.hub.abes.fr/springer/ebooksLN2011/SPR_EBOOK_642_19NOV');
rdf_loader_run();
....but still got the problem when querying in V7 with DATATYPE
returning http://www.w3.org/2001/XMLSchema#string (instead of
http://www.w3.org/1999/02/22-rdf-syntax-ns#XMLLiteral ), for example
same "Subject" uri and same predicate in query from the first example
above :
select ?graph ?titre (DATATYPE(?titre ))from
<http://www.hub.abes.fr/springer/ebooksLN2011/SPR_EBOOK_642_19NOV>
where {
GRAPH ?graph {
<http://www.hub.abes.fr/springerB/ebook/3540192379/chapter/37/w>
<http://dbpedia.org/ontology/subtitle> ?titre
}
}
graph titre callret-2
http://www.hub.abes.fr/springer/ebooksLN2011/SPR_EBOOK_642_19NOV "???�
rootzPart III: a sharp result on the lack of uniform stabilization"
http://www.w3.org/2001/XMLSchema#string
...hope it will help to investigate
Thomas
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