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From jian chen <chenjian1...@gmail.com>
Subject Re: Small problem in searching
Date Thu, 15 Sep 2005 16:22:02 GMT
Hi,

I think Lucene transforms the prefix match query into all sub queries where 
the searching for a prefix could result into search for all terms that begin 
with that prefix.

For "postfix" match, I think you need to do more work than relying on 
Lucene's query parser. 

You can iterate over the terms and do an "endsWith()" call, and if there is 
a match, then, perform a normal Lucene search for that term. 

So, effectively, you do the same thing as prefix match, conceptually loop 
over all available terms in your dictionary and find all the terms to be 
prepared for actual searching.

This might be slow. What you might want to speed up the performance is, you 
can store all the available terms in-memory, and looping through all unique 
terms is a breeze. This is what google used for their prototype search 
engine when they were way back in the 1998s. (I guess :-)

Cheers,

Jian

On 9/15/05, tirupathi reddy <tirupathireddy_m@yahoo.com> wrote:
> 
> Hi guys,
> 
> I have some problem while searching using Lucene. Say I have some thing 
> like "tirupathireddy" or "venkatreddy" in the index. When i search for 
> string "reddy" I have to get those things (i.e. "tirupathireddy" and 
> "venkatreddy"). I have read in Query syntax of Lucene that * will not be 
> given at the starting of the search string. SO how can I achiev that. I am 
> in very much need of that. So please help me out.
> 
> 
> WIth Regards,
> TirupatiReddy Manyam.
> 
> 
> Tirupati Reddy Manyam
> 24-06-08,
> Sundugaullee-24,
> 79110 Freiburg
> GERMANY.
> 
> Phone: 00497618811257
> cell : 004917624649007
> 
> 
> ---------------------------------
> Yahoo! for Good
> Click here to donate to the Hurricane Katrina relief effort.
>

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