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From Tatu Saloranta <>
Subject Re: Searching using lucene!
Date Thu, 03 Apr 2003 15:00:42 GMT
On Wednesday 02 April 2003 23:45, Gupta, Chandrashekhar (CAP, ELCOE) wrote:
> Hi Guru's
> I have indexed the top level folder in which search is to happen..I have a
> query ..How can I search these indexex so that my search would limit to a
> subfolder inside the top level folder indexed. Is there any API for the
> same?

You may need to read all the documentation to fully understand how Lucene 
works. It has no concept of folders or even files. It just indexes set of 
documents with one or more fields each, and allows for searching based on 
contents of one or more of those fields. So in a way, answer is no, there's 
no such API. However, implementing what you want is fairly easy with Lucene.

In your case you need to recursively index contents of all the fields, and add 
one or more fields detailing actual file hierarchy used to get the files.
One possibility is to store filename in one non-tokenizable field, and then 
use prefix query (in addition to actual query you want) to limit results to 
just documents that match files in specified directory/ies. The query to 
match filename/directory should be made required (not optional) to completely 
filter out irrelevant results.

Hope this helps,

-+ Tatu +-

ps. I think your question would really belong to users list, not developers... 

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