Strigi - How to setup & use

[ofir]

Re: Strigi - How to setup & use

I am asking since strigi keep indexing the same files and doesn't end.

Every reboot strigi starts from the beginning (I though that it is because I deleted the build folder...).

[Rog131]

Re: Strigi - How to setup & use

Have you tried to "reset" the Nepomuk database ? (> Re: Nepomuk&Strigi, enable and use)

- Stop the Nepomuk & Strigi
- Rename/move/remove: ~/.kde/share/apps/nepomuk/repository/main/data/virtuosobackend/...
- Restart the Nepomuk & Strigi

Is the indexing successful ? - no error messages.

[Rog131]

Re: Strigi - How to setup & use

The official version of the Virtuoso is coming > [ubuntu/lucid] virtuoso-opensource 5.0.12-0ubuntu1 (Accepted):

virtuoso-opensource (5.0.12-0ubuntu1) lucid; urgency=low

* Initial release

[peterbuldge]

Re: Strigi - How to setup & use

I updated to the RC and installed the two virtuoso packages. nepomuk starts up fine with no errors or anything but just doesnt seem to see my database, which was already converted to virtuoso. Gwenview sees tags but nothing happens when one is clicked to search it. Dolphin shows no tags or anything. I can search for tags in Dolphin and it wont error like before but it will instead finish instantly with no results. I know my database is still there and its in the right place. anybody have an idea what's going on?

[doctordruidphd]

Re: Strigi - How to setup & use

I can search for tags in Dolphin and it wont error like before but it will instead finish instantly with no results.

FYI - same result here. What I do notice, and it may be irrelevant, is that in karmic (sesame2 backend) in .kde/share/apps/nepomuk/repository/main, there are data and index directories. In lucid (virtuoso backend) there is only a data directory. So although the data is being parsed, it may be there is no index being built. Just a guess.

[Kubuntiac]

Re: Strigi - How to setup & use

I can search for tags in Dolphin and it wont error like before but it will instead finish instantly with no results.

FYI - same result here.

Here too. Hey doctordruidphd / peterbuldge , what architecture are you guys on (ie i386, amd64 etc). Maybe there's some commonality there. I'm on an AMD 64 bit machine.

[peterbuldge]

Re: Strigi - How to setup & use

I'm on i686.

I decided to backup my .kde folder restore settings for a more fresh install of the RC. Now Gwenview works beautifully with virtuoso (tags, search) but Dolphin is still a no go.

edit: Correction. While the tag list does show up in Gwenview and the tags can be clicked to show the results of files having those tags, the tags still don't show up in Gwenview's info panel.

[doctordruidphd]

Re: Strigi - How to setup & use

I'm on AMD64.

[Kubuntiac]

Re: Strigi - How to setup & use

Interesting. So we're all running 64 bit. I guess the next 2 questions are:

1. Is anyone reading this on a 32 bit system that has virtuoso working?
2. Is anyone reading this on a 64 bit system where virtuoso isn't working?

[tnorris]

Re: Strigi - How to setup & use

I'm on i686.

I decided to backup my .kde folder restore settings for a more fresh install of the RC. Now Gwenview works beautifully with virtuoso (tags, search) but Dolphin is still a no go.

edit: Correction. While the tag list does show up in Gwenview and the tags can be clicked to show the results of files having those tags, the tags still don't show up in Gwenview's info panel.

I'm on Kubuntu 9.10 32 Bit with 4.4 RC1 installed and the virtuoso packages installed.

I can add tags to files, and see them in Dolphin but the search in dolphin doesn't seem to find them.

In gwenview, my results mirror yours. My tag list is there and I can click on the tag to get files with that tag, but the file meta data doesn't show the tag on the file.

I also don't seem to be able to find files via Krunner based on tags. I'm not sure if that's supposed to work or not.

[peterbuldge]

Re: Strigi - How to setup & use

Interesting. So we're all running 64 bit. I guess the next 2 questions are:

1. Is anyone reading this on a 32 bit system that has virtuoso working?
2. Is anyone reading this on a 64 bit system where virtuoso isn't working?

I'm on 32-bit. sorry if there was confusion

[peterbuldge]

Re: Strigi - How to setup & use

I'm on i686.

I decided to backup my .kde folder restore settings for a more fresh install of the RC. Now Gwenview works beautifully with virtuoso (tags, search) but Dolphin is still a no go.

edit: Correction. While the tag list does show up in Gwenview and the tags can be clicked to show the results of files having those tags, the tags still don't show up in Gwenview's info panel.

I'm on Kubuntu 9.10 32 Bit with 4.4 RC1 installed and the virtuoso packages installed.

I can add tags to files, and see them in Dolphin but the search in dolphin doesn't seem to find them.

In gwenview, my results mirror yours. My tag list is there and I can click on the tag to get files with that tag, but the file meta data doesn't show the tag on the file.

I also don't seem to be able to find files via Krunner based on tags. I'm not sure if that's supposed to work or not.

yeah I tried it with a new empty database and its similar to your experience. I can create tags just fine but they are basically useless. With my old database my experience is as I already described.

[Kubuntiac]

Re: Strigi - How to setup & use

I'm on 32-bit.

Another fine theory burns to the ground!

[carsy]

Re: Strigi

@Carsy - Any chance of adding the instructions for compiling to your guide. It's a pretty vital piece. Thanks!

64bit; 9.10; KDE 4.4 RC1(smooth as silk)

My apologies for not following this conversation. As far as I can tell, this forum thread is the best resource for getting virtuoso/strigi/nepomuk going. By the way, Akonadi is required for Kontact and now looks for a connection to strigi, so Kontact complains if not-nepomuk/strigi.

Regarding the need to compile virtuoso...
I don't recall that I had to compile virtuoso. The workflow has dimmed in my memory. I think that I just unpacked the virtuoso package and followed Rog131's instructions (see reply #9 in this thread). The only difficulty was that virtodbc_r.so is in a hidden directory (.../virtuoso-opensource-5.0.12/binsrc/driver/.libs/. There was a comment about not having a .libs directory. To see the hiddens--in konsole, the command is ls -a , in Dolphin alt+. shows/hides hidden files.)

I also discovered virtuoso-server and virtuoso-drivers in one of the Kubuntu repositories. Out of concern for screwing up a process that's working, I emailed Sebastian Trüg (the Nepomuk guru mentioned in Rog131's post) before installing those packages. I suggested that a follow-up blog post would be useful. Here's the thread:

I am happy that Nepomuk with Virtuoso works for you. As for your question:
this is very debian/ubuntu specific and as such rather a question for them
than for me. I would think that installing it on top is no big problem but I
cannot guarantee anything. After all I do not use Debian or Ubuntu.

From the Nepomuk point of view the only problem is that Virtuoso v5 is not
compatible with Virtuoso v6 and the database is not updated automatically. But
that is a topic I will blog about soon.

Cheers,
Sebastian

On Sunday 10 January 2010 19:57:08 you wrote:
> Hello Sebastian,
>
> I got Nepomuk running great based on your previous post "Virtuoso –
> Once More With Feeling". Now virtuoso-drivers and virtuoso-server are
> in the repositories (sorry I don't know exactly where). Is there an
> issue with installing those over the top of the method you laid out
> previously? Is there any reason to abandon the current working setup
> in favor of the apt-get method?
>
> It also seems like these might be questions that would be interesting to
> others.

There's probably someone who understands the implications and ramifications this general issue who will make it all better.

I deeply appreciate the Kubuntu community.

Carl

[doctordruidphd]

Re: Strigi - How to setup & use

RE:Compiling virtuoso vs. installing from the repositories:

I did it both ways.
If you choose to compile virtuoso from source - which went without errors on my system - be sure to read the README file, as it gives instructions for discovering what other things you need to install, and how to comile for 64-bit systems, if you need to do that.

If you compile and install virtuoso-5.x, it will indeed install into a directory that is hard to find; however, 'sudo updatedb' followed by 'locate virtuoso-t' will reveal where it is (/usr/local/virtuoso-opensource/bin/virtuoso-t on my system). I found the symbolic linking did NOT work for strigi; I had to copy the virtodbc_r.so file into /usr/lib and virtuoso-t into /usr/local/bin.

Now I discovered an interesting problem. If you start virtuoso on its own (which you must do from its installed directory), nepomuk will not run. It wants to start it by itself. So if you want nepomuk to run, you can't have the virtuoso system running on its own. Which is too bad, as it's an interesting database system, with its own web interface at http://localhost:8890/ .

If you install the packages from the repository, it simply writes the two files you need, without the rest of the virtuoso system.

So you can do either, depending upon whether you want to play with the virtuoso system or not. But it appears you cannot do both at the same time.

Bear in mind that strigi expects virtuoso-5.x, and won't currently run with virtuoso-6.x. That may have changed.