Thanks Chuck.
What is the workaround for filtering (preferably using RangeQuery) following?
1. Float values. Do I have to pad those with zeros on both sides?
2. Negative numbers (integer as well as floats)
Thanks
From: "Chuck Williams" <[EMAIL PROTECTED]> Reply-To: "Lucene Users List" <[EMAIL PROTECTED]> To: "Lucene Users List" <[EMAIL PROTECTED]> Subject: RE: Filtering Results? Date: Wed, 13 Oct 2004 21:49:30 -0700
RangeQuery is a good approach. Put fields on your documents like age. The only tricky thing is that the comparisons are all done lexicographically rather that numerically. Lucene has a built-in routine to convert dates into a monotonic lexicographic sequence (DateField.timeToString). For positive integer data types like age, it is sufficient to store them as fixed line String's, e.g.: 5 --> "005" 18 --> "018" 100 --> "100"
Then just access range queries. E.g.: 1. age:[018 TO] 2. age:[TO 018] 3. age:[005 TO 018]
Those are <= queries. Use {} instead of [] for < queries.
Good luck,
Chuck
> -----Original Message----- > From: sam s [mailto:[EMAIL PROTECTED] > Sent: Wednesday, October 13, 2004 12:55 PM > To: [EMAIL PROTECTED] > Subject: Filtering Results? > > Hi, > I want to do filtering on matched results of a query. > For example > 1. age > 18 > 2. age < 18 > 3. age > 5 and age < 18 > 4. birthdate = [some date] > What can be the best approach? > How can it be done with range query? > Can it be done without range query? > > Also. > Where can I find information meaning of following classes and how to use > them? > FilteredQuery > QueryFilter (I didnt understand much looking at test case of this) > CachingWrapperFilter > etc.. > > Thanks in advance > > _________________________________________________________________ > Don't just search. Find. Check out the new MSN Search! > http://search.msn.com/ > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED]
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