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From: Anshum <anshumg@gmail.com>
Date: Tue, 10 Nov 2009 13:05:38 +0530
Message-ID: <867513fe0911092335n5448fff6xf636afaead628c9f@mail.gmail.com>
Subject: Re: Index maintaining/updating
To: java-user@lucene.apache.org
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Hi Wenhao,
Its generally better to incrementally buld your index and at the same
tiime.
Considering by this time you'd be a little aware of implementing/using
luceneAPI, here is what you could do.
Open the existing index using 'createnew' set to false

*IndexWriter(Directory d, Analyzer a, boolean create) *
*This way, the indexwriter would append the new documents to the existing
index (as specified in the IndexWriter constructor).*
*
*
*This way you could incrementally build the index.*
*Also note, you may wish to optimize the index at times.*
*
*
*Hope this solves your issue (and doubt).*
*
*--
Anshum Gupta
Naukri Labs!
http://ai-cafe.blogspot.com

The facts expressed here belong to everybody, the opinions to me. The
distinction is yours to draw............


On Tue, Nov 10, 2009 at 12:09 PM, Wenhao Xu <xuwenhao2008@gmail.com> wrote:

> Hi, everybody,
>   I am new to Lucene and have a question about how to update my index. The
> following is my situation:
>   1) I create indexes for each text (or varchar) field of a relational
> database;
>   2) This database will be continuously inserted into by new records; and I
> need to add indexes of these new records to the index;
>   So therefore, I just need to incrementally update my index. Should I
> delete the original index an rebuild a new one? Or just update the new one?
> Which method is better for my situation?
>
>    I searched google, but I did not get a good answer. So I posted the
> question here. Looking forward to your reply.
>
> Thanks,
> W.
>
>
>
> --
> ~_~
>

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