Xapian discuss - May 2009 - Simulating Fields

I'm very new with Xapian.

I'm trying to index a set of documents (pretty big). They have titles,
categories, tags, and of course, the document bodies themselves. I would like to
be able to query for any of those "fields". In particular, in the case
of the
titles, I'd like to be able to retrieve the document with _this exact
title_.

First, am I right to assume that Xapian has no concept of "fields" and
that they
must be simulated with term prefixes? I couldn't find a lot of documentation
about it...

If they must be simulated, what's the best way to do it? Currently, I'm
indexing
the documents:

=== python ==       indexer.set_document(doc)
       indexer.index_text_without_positions(page.text)
       indexer.index_text(page.title)
       indexer.index_text(page.title,1,"XTITLE")
==
delve shows the title terms indexed with the XTITLE prefix, but, how do I write
a query to search for those? How can I write a query to retrieve a document
given the title (but not those with similar titles)?

-- 
Luis Zarrabeitia
Facultad de Matem?tica y Computaci?n, UH
http://profesores.matcom.uh.cu/~kyrie





-- 
Participe en Universidad 2010, del 8 al 12 de febrero de 2010
La Habana, Cuba 
http://www.universidad2010.cu

On Sat, May 02, 2009 at 05:19:56PM -0400, Luis Alberto Zarrabeitia Gomez wrote:
> delve shows the title terms indexed with the XTITLE prefix, but, how
> do I write a query to search for those? How can I write a query to
> retrieve a document given the title (but not those with similar
> titles)?
You can use the QueryParser for this; set a term prefix before parsing
the query, for instance. Not that if you're matching on exact titles,
you probably want a phrase search (or, if you're not doing anything
else, possibly to construct the term as XTITLE<title> and match it as
a single (boolean) term, without using the QueryParser at all).

J

-- 
  James Aylett

  talktorex.co.uk - xapian.org - uncertaintydivision.org