On Mar 27, 2007, at 8:17 AM, Niklas Lindström wrote:
Hello Roland!
There have been some fixes for the SPARQL-support since release 2.3.3.
If you check out the latest trunk (easiest to do with "easy_install -U
rdflib==dev" if you have setuptools installed) you should get the
expected result. I ran your example and got the last value as:
[(rdflib.URIRef('#rohe0001'), None,
rdflib.Literal('[EMAIL PROTECTED]', language=None,
datatype=None), None, None), (rdflib.URIRef('#evma0001'), None,
rdflib.Literal('[EMAIL PROTECTED]', language=None, datatype=None),
None, None)]
which looks right, as I see it.
RDFLib 2.4.0 is in the pipe, and will be released real soon now. (Am I
right on this Daniel?)
We have fixed a number of bugs like this and we have improved some
functionality in a fairly significant way (more details in release
notes if not before). I think we have pretty much reached a point
where there are a lot of good fixes to get out in the form of a
release and that the code has stabilized from the changes. There are
some other small refactors that we'd like to get in since we're
bumping the middle number (aka made more than just small bug fixes).
If anyone has dates they'd like to see us try and hit re: releasing
2.4.0 please let us know. Else in the mean time please do give
easy_install -U rdflib==dev a try on your projects to help us catch
any regressions that may have crept into the bits.
Best regards,
Niklas Lindström
On 3/27/07, Roland Hedberg <[EMAIL PROTECTED]> wrote:
Hi!
I'm not sure where the problem it but the results I get are pretty
weird.
I'm using rdflib version 2.3.3
I have a store (ConjunctiveGraph) that contains the following graphs:
<rdf:RDF xmlns="http://www.openmetadir.org/om2/prim.owl#";
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#";>
<Person rdf:about="#evma0001">
<contactInfo rdf:nodeID="b2"/>
<givenName>Eva</givenName>
<surName>Magnusson</surName>
</Person>
<Person rdf:about="#rohe0001">
<contactInfo rdf:nodeID="b1"/>
<givenName>Roland</givenName>
<surName>Hedberg</surName>
</Person>
<Email rdf:nodeID="b1">
<address>[EMAIL PROTECTED]</address>
</Email>
<Email rdf:nodeID="b2">
<address>[EMAIL PROTECTED]</address>
</Email>
</rdf:RDF>
It's simply two persons, and some contact information for them.
Now, if I send the following SPARQL query
PREFIX a: <#>
PREFIX c: <http://www.openmetadir.org/om2/prim.owl#>
PREFIX b: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
SELECT ?b ?c ?d ?e
WHERE {
a:rohe0001 b:type c:Person .
a:rohe0001 c:contactInfo ?a .
?a b:type c:Email .
OPTIONAL { ?a c:validTo ?b } .
OPTIONAL { ?a c:address ?c } .
OPTIONAL { ?a c:validFrom ?d } .
OPTIONAL { ?a c:contactType ?e } .
}
I would expect to get:
[(None,"[EMAIL PROTECTED]",None,None)]
and I do.
But if I reissue the query but now modify it slightly:
PREFIX c: <http://www.openmetadir.org/om2/prim.owl#>
PREFIX b: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
SELECT ?id ?b ?c ?d ?e
WHERE {
?id b:type c:Person .
?id c:contactInfo ?a .
?a b:type c:Email .
OPTIONAL { ?a c:validTo ?b } .
OPTIONAL { ?a c:address ?c } .
OPTIONAL { ?a c:validFrom ?d } .
OPTIONAL { ?a c:contactType ?e } .
}
I expected to get back:
[("#rohe0001",None,"[EMAIL PROTECTED]",None,None),
("#evma0001",None,"[EMAIL PROTECTED]",None,None)]
but I don't, I get
[("#rohe0001",None,"[EMAIL PROTECTED]",None,None),
("#evma0001",None,"[EMAIL PROTECTED]",None,None),
("#rohe0001",None,"[EMAIL PROTECTED]",None,None),
("#evma0001",None,"[EMAIL PROTECTED]",None,None)]
which was to me totally unexpected.
Anyone who can tell me why I got this result ?
-- Roland
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Daniel Krech, http://eikeon.com/
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