[Xapian-discuss] Indexing & Querying multiple fields

[Olly Betts]

On Sun, Jan 14, 2007 at 10:36:13PM +0100, M.J. van der Veen wrote:
> I want to be able to search with the P variable the fields 'text' and
> 'question'.

Then the following two lines look reasonable:

> question				:    weight=3 lower index
> text					:    unhtml lower index

The "lower" action probably isn't wanted, unless you want to disable the
generation of R-prefixed terms for capitalised words.  The "index"
action handles case conversion of the terms it generates.

> With this index file, only indexed words from the 'text' variable can
> be somehow and now the words from the question variable.

Sorry, I don't understand what you're saying here.

> Secondly, I want to be able to search name, username and city
> probabilistically. I'm not sure if I'm doing this right, but I thought
> that "P = XUmaarten" would allow me to probabilistically search the
> username field? Nonetheless, it's not working.

You need to add something like $setmap{prefix,user,XU} to your query
template, and then you can use user:maarten in the P parameter.  See
termprefixes.txt in the Omega docs for details - you want to read the
section "Probabilistic Fields":

http://svn.xapian.org/trunk/xapian-applications/omega/docs/termprefixes.txt?view=co

> Last and final question. I've been unable to search ranges with the D,
> M, and Y booleans. so I added a date=yyymmdd field aswell.

What did you put in your D and M terms?  For the date range searching to
work, D must give the year and month, and M the year - e.g. for today,
the terms are: D20070115 M200701 Y2007

If you were adding D15 M01 Y2007 then the daterange searching wouldn't
work.

> Are these other booleans still good for anything except searching for
> a specific day, month or year?

No.

Cheers,
    Olly