Nepomuk Virtual Folders - The Next Level

Tuesday, 29 April 2008 | trueg

Well, maybe "The Next Level" is overstating it but I improved the query API a lot. Not only can we now properly handle all sorts of literal comparisons but we can also use plain SPARQL queries. The latter allow some nice stuff like "Recent Files".

For anyone interested the "Recent Files" virtual folder is coded using the folloing SPARQL query:

select ?r where { 
    ?r a <http://freedesktop.org/standards/xesam/1.0/core#File> . 
    ?r <http://freedesktop.org/standards/xesam/1.0/core#sourceModified> ?date . 
} ORDER BY DESC(?date) LIMIT 10

A very simple query that just selects the 10 most recent files.

Also nice are the folders listing all files modified today or yesterday. Anyway, time for a little screenshot and for me to code some query creation GUI (and maybe nested virtual folders).

[image:3442 size=preview]