Jonas Lindqvist wrote:
Hi!
Are these steps sufficient to restore the db-files or as a way to
append images to a collection? (Or merge two collections, or whatever):
1. Create a bunch of .fts files in
$GIFT_HOME/gift-indexing-data/collectionName/, using
gift-extract-features. (and a heap of ppm images)
2. If InvertedFileFeatureDescription.db is okay, we SHOULD be able to
use it!?
Yes. It is constant for any given feature set (of which there is only
one available in the GIFT distro).
Or we create a new by doing something magic like:
cat arbitraryPpmImage.ppm | gift-write-feature-descs | perl -ne 'print
join(" ",(split(" ",$_))[0..1]),"\n";' >
InvertedFileFeatureDescription.db
3. recreate a url2fts.xml, with paths to all the .fts files we want to
use, and some path to thumbnails and images (for the server to use
when presenting its results). A quick perl hack will do this easily.
4. Run "gift-generate-inverted-file
$GIFT_HOME/gift-indexing-data/collectionName/" to recreate
InvertedFile.db and InvertedFileOffset.db (using the url2fts.xml file)
5. Restart the running gift server.
Something similar to this appeared to work when I was experimenting
with the GIFT a while back, but I haven't tried it properly lately.
What do you say? Have I missed some important steps, or have I
misunderstood something?
Looks good to me. Have you tried it?
The only thing I can think of is making sure that the collection name
and id still match those in the gift-config.mrml file (added by
gift-add-collection), but I think they should...
Cheers,
David
--
Dr David McG. Squire, Senior Lecturer, on sabbatical in 2006
Caulfield School of Information Technology, Monash University, Australia
CRICOS Provider No. 00008C http://www.csse.monash.edu.au/~davids/
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