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Posted to java-user@lucene.apache.org by Antony Bowesman <ad...@teamware.com> on 2006/11/20 04:54:11 UTC

How to do a "starts with" search

Hi,

I'm trying to replace an existing search mechanism that supports a 'starts with' 
type of searching, for example a mail subject can contain the string

A B C D

the existing search allows the user to search starts with 'A B*' which would 
match, whereas starts with 'B C*' would not.  PhraseQuery with no slop would 
would not work as it would match.

Is there any query I can enfore the starts with, so that 'B C*' does not match.

If not, do I have to use some HitsCollector to filter the results after the 
search - but then how do I find out the positional information.

Regards
Antony








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Re: How to do a "starts with" search

Posted by Antony Bowesman <ad...@teamware.com>.
Martin Braun wrote:
> Please refer to  the answers to my question on this list:
> http://www.nabble.com/forum/ViewPost.jtp?post=7337585&framed=y
> 
> Shortly spoken: SpanFirstQuery works like a charm :)

Thanks Martin, that looks just right.  I'll try it.
Antony



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Re: How to do a "starts with" search

Posted by Martin Braun <mb...@uni-hd.de>.
Hi Antony Bowesman schrieb:
> Hi,
> 
> I'm trying to replace an existing search mechanism that supports a
> 'starts with' type of searching, for example a mail subject can contain
> the string
> 
> A B C D
> 
> the existing search allows the user to search starts with 'A B*' which
> would match, whereas starts with 'B C*' would not.  PhraseQuery with no
> slop would would not work as it would match.
> 
> Is there any query I can enfore the starts with, so that 'B C*' does not
> match.

Please refer to  the answers to my question on this list:
http://www.nabble.com/forum/ViewPost.jtp?post=7337585&framed=y

Shortly spoken: SpanFirstQuery works like a charm :)

hth,
 martin


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