Sounds like faceting, I think. Have you looked at Solr?
-Grant
On Sep 15, 2007, at 1:15 AM, Mohammad Norouzi wrote:
Hello,
In our application, we have many categories (indexes) in which
different
kind of information have been indexed. we provided a facility for
our users
to opt their category to search and we also provided a way that
they select
more than one category to search, afterwards, we must return back
the result
from selected categories in which they are related to each other
and discard
other documents which their IDs are not common with the results
from other
categories, in other words, an intersection of all results
currently, each category has an ID field and this help us to find
which
document to select and which one to discard, in order to implement
this, we
defined a HitCollector in which, we collect all the Lucene's
document IDs to
load the document later as well as all category ID to find its
relationship
with other result. we store these IDs in a java.util.BitSet
structure to
save the memory and also for performance issues.
now this works fine, but it's messy, further more, to find all common
documents we have to compare all the results two by two and this is
really
exhaustive and eat up the CPU resources and this deprived us from the
Lucene's speed of searching.
In my opinion, if this simple relationship could be embedded inside
the
Lucene Api at low level sections of loading documents, this process
would be
done very fast, and I think this feature will make many Lucene's
user happy
I want to know, whether this is possible for Lucene developers or
not, or it
is in their TO DO list or they are going to provide it in future.
thank you all Lucene developers and producers.
--
Regards,
Mohammad Norouzi
--------------------------
see my blog: http://brainable.blogspot.com/
another in Persian: http://fekre-motefavet.blogspot.com/
--------------------------
Grant Ingersoll
http://lucene.grantingersoll.com
Lucene Helpful Hints:
http://wiki.apache.org/lucene-java/BasicsOfPerformance
http://wiki.apache.org/lucene-java/LuceneFAQ
---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
