Re: [Tracker] Metadata search Tracker Gnome

[Martyn Russell <martyn lanedo com>]

On 28/09/11 00:36, John Bestevaar wrote:
> Hi Martyn and Team :-)

Hi,

> Do i understand correctly that you propose to add to Tracker,
> tracker:fulltextIndexed true; for each mlo class property, as a function
> that indexes the texts and stores them in a database somewhere on the
> users machine and that it is this which will make the information
> retrievable via the Tracker GUI search? =-O

Let me try to give some background first. Right now there is one 
database with all information in it. There used to be 2. One for 
metadata and one for FTS data. Now the FTS data is just some tables in 
the same DB.

Now, if you query for "foo" in particular ontology properties and 
classes like mlo, then it will work *now* already. However, if you want 
to find the word "foo" in *ANY* data related to a file, you have to be 
clever in the query and use either search for "foo" against EVERY 
metadata derivative in every class related to the file or you can use 
fts:match (which will match on a class level and also allows you to 
perform additional FTS based functions). The fts:match allows you to do 
it per class generally, not per property. There would still need to be 
some work to check mlo class information in the client anyway as it 
isn't there now.

Adding tracker:fulltextIndexed to particular mlo class properties 
wouldn't be so much of a hit IMO (not like adding it to 
nie:plainTextContent which is the content of files and much later in 
general).

>  From my point of view, having all/any image metadata available to a
> Tracker Gui text search is very useful and very desirable. :-D
> For example: mlo; city property: My photo collection ( early days ) has
> several tens of images with about a dozen different "city " locations.

Indeed, we are really just a test case to show how to use Tracker. We 
would prefer applications are integrated with it than have one app for 
every type of search. But we could add a panel with image metadata sure.
It's just about finding the time to do it.

> Finding,...via Tracker Gui,... which photos were taken at which
> location( Name in text form) would save me having to manually organize
> my collection (which will get big) into extensive album trees. 8-)

Indeed. You could also use tags which would work too once my 
tracker-needle-tagging-improvements branch has been applied to master.

--
Regards,
Martyn

Founder and CEO of Lanedo GmbH.