[Nepomuk] Soprano insists on not using Virtuoso as its backend

[Laura Dragan]

Hi,

On Tue, Oct 20, 2009 at 7:34 PM, Raphael Kubo da Costa <kubito at gmail.com> wrote:
>
> Hey there,
>
> After the recent blog posts about Virtuoso being ready (or almost
> ready) for everyday usage, I've decided to give it a try here in
> trunk. I've installed it (it doesn't pass all tests the first time,
> but everything works fine the second time I try to compile it),
> removed kdesupport's CMakeCache.txt and rebuilt soprano. The virtuoso
> backend was installed successfully. After that I removed kdebase's
> CMakeCache.txt and reinstalled it. This gives me two backends: redland
> and virtuoso, as I don't have Java installed to use sesame2.
>
> However, whenever I edit $KDEHOME/share/config/nepomukserverrc and put
> "Used Soprano Backend=virtuosobackend" inside the Basic Settings
> section and restart Nepomuk it goes back to using redland as its
> backend.
>

It worked for me last week, so I'm relatively sure that the line in
the rc file should be:

Soprano Backend=virtuosobackend


Cheers,
Laura


> The relevant debug messages seem to be these:
>
> [/home/kubo/kde4/bin/nepomukservicestub] nepomukstorage(7908)/nepomuk
> (storage service) Nepomuk::Repository::activeSopranoBackend:
> (Nepomuk::Core::Core) could not find backend "sesame2" . Falling back
> to default.
> [/home/kubo/kde4/bin/nepomukservicestub] nepomukstorage(7908)/nepomuk
> (storage service) Nepomuk::Repository::activeSopranoBackend:
> (Nepomuk::Core::Core) could not find backend "sesame2" . Falling back
> to default.
> [/home/kubo/kde4/bin/nepomukservicestub] nepomukstorage(7908)/nepomuk
> (storage service) Nepomuk::Repository::open: opening repository '
> "main" ' at ' "/home/kubo/.kde4trunk/share/apps/nepomuk/repository/main/"
> '
> [/home/kubo/kde4/bin/nepomukservicestub]
> (Soprano::Redland::BackendPlugin) creating model of type "hashes" with
> options "hash-type='bdb',contexts='yes',dir='/home/kubo/.kde4trunk/share/apps/nepomuk/repository/main/data/redland'"
> [/home/kubo/kde4/bin/nepomukservicestub] nepomukstorage(7908)/nepomuk
> (storage service) Nepomuk::Repository::open: Successfully created new
> model for repository "main"
> [/home/kubo/kde4/bin/nepomukservicestub] nepomukstorage(7908)/nepomuk
> (storage service) Nepomuk::Repository::open: Successfully created new
> index for repository "main"
> [/home/kubo/kde4/bin/nepomukservicestub] nepomukstorage(7908)/nepomuk
> (storage service) Nepomuk::Repository::open: no need to convert "main"
>
> Then, whenever I use 'qdbus org.kde.NepomukStorage /nepomukstorage
> org.kde.nepomuk.Storage.usedSopranoBackend' I get the following:
>
> [/home/kubo/kde4/bin/nepomukservicestub] nepomukstorage(7999)/nepomuk
> (storage service) Nepomuk::Repository::activeSopranoBackend:
> (Nepomuk::Core::Core) could not find backend "sesame2" . Falling back
> to default.
> redland
>
> What can I be doing wrong?
>
> Cheers,
> Raphael
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