I guess Compass is probably the way to go - http://www.opensymphony.com/compass/

________________________________

From: Prasenjit Mukherjee [mailto:[EMAIL PROTECTED]
Sent: Tue 4/11/2006 2:45 AM
To: java-user@lucene.apache.org
Subject: Re: Distributed Lucene.. - clustering as a requirement



Agreed, an inverted index cannot be efficiently maintained in a
B-tree(hence RDBMS).  But I think we can(or should)  have the option of
a  B-tree based storage for unindexed fields, whereas for indexed fields
we can use the existing lucene's architecture.

prasen

[EMAIL PROTECTED] wrote:

> Dmitry Goldenberg wrote:
>
>> For an enterprise-level application, Lucene appears too file-system and
>
> too byte-sequence-centric a technology.  Just my opinion.  The
> Directory API is just too low-level.
>
> There are good reasons why Lucene is not built on top of a RDBMS.  An
> inverted index is not efficiently maintained in a B-Tree, and B-Trees
> are the foundation of RDBMSes.
>
> http://www.haifa.ibm.com/Workshops/ir2005/papers/DougCutting-Haifa05.pdf
>
>> I'd be OK with an RDBMS-based Directory implementation I could take
>> and use.  But generally, I think the Lucene authors might like to
>> take a step back and consider splitting off the repository and making
>> it more extensible and high-level.  Perhaps something like JSR-170
>> (Java repository API) may be a good route to go....
>
>
> If you have concrete ideas for an improvements to Lucene's Directory
> interface, please propose them to the java-dev mailing list, ideally
> as a patch.
>
> Cheers,
>
> Doug
>
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