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List: nepomuk
Subject: [Nepomuk] Can't mainModel()->executeQuery
From: Christian Mollekopf <chrigi_1 () fastmail ! fm>
Date: 2012-05-05 9:52:55
Message-ID: 2251847.tKazaBnMHr () myhost2
[Download RAW message or body]
Hey,
I'm trying to write a little helper application to check the status of the
akonadi indexing, but ran into a problem:
If I'm running this query:
Soprano::QueryResultIterator result = Nepomuk::ResourceManager::instance()-
>mainModel()->executeQuery(QString::fromLatin1("select ?compatLevel where { ?r
nie:url <akonadi:?item=191> . ?r aneo:akonadiIndexCompatLevel ?compatLevel .
}"), Soprano::Query::QueryLanguageSparql);
I get back a binding for compatLevel, but the node is always empty
(result.binding(0).isEmpty() == true).
On the server-side I can see this:
chrigi ~ $[/usr/bin/nepomukservicestub] virtual void
Soprano::Server::LocalServer::incomingConnection(quintptr)
[/usr/bin/nepomukservicestub] void
Soprano::Server::ServerCorePrivate::addConnection(Soprano::Server::ServerConnection*)
New connection. New count: 12
[/usr/bin/nepomukservicestub] Soprano::ODBC::Connection::Connection()
Soprano::Server::ServerConnection(0x863190)
[/usr/bin/nepomukservicestub] "/usr/bin/nepomukservicestub(25707)" Soprano:
"SQLGetData for data length failed (iODBC Error: [iODBC][Driver
Manager]Invalid cursor state)"
"/usr/bin/nepomukservicestub(25707)" Soprano: "SQLGetData for data length
failed (iODBC Error: [iODBC][Driver Manager]Invalid cursor state)"
[/usr/bin/nepomukservicestub] "/usr/bin/nepomukservicestub(25707)" Soprano:
"SQLGetData for data length failed (iODBC Error: [iODBC][Driver
Manager]Invalid cursor state)"
[/usr/bin/nepomukservicestub] "/usr/bin/nepomukservicestub(25707)" Soprano:
"SQLGetData for data length failed (iODBC Error: [iODBC][Driver
Manager]Invalid cursor state)"
I have no clue how to debug that as there are no error messages at all on the
client-side. Note that the exact same query works in nepomukshell and returns
the correct result of "3".
Any ideas?
Cheers,
Christian
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