On Wed, 24 Nov 2004 13:04:20 +0530, Santosh <[EMAIL PROTECTED]> wrote:
> I have gon through IndexReader , I got method : delete(int docNum) ,
> but from where I will get document number? Is this predifined? or we have
> to give a number prior to indexing?
The number(aka doc-id) is given by lucene and is it's an internal sequential
integer. This number is usually retrieved from Hits.id(int) of your search.
Hits myHits = myIndexSearcher.search( myQuery );
for ( int i=0; i<myHits.length(); i++ ) {
Document doc = myHits.doc( myHits.id( i ) );
// myHits.id( i ) retrieves the i-th doc-id and
// myHits.doc( myHits.id( i ) ) returns the desired i-th document
// in the result myHits.
}
HTH
>
>
> ----- Original Message -----
> From: "Luke Francl" <[EMAIL PROTECTED]>
> To: "Lucene Users List" <[EMAIL PROTECTED]>
> Sent: Wednesday, November 24, 2004 1:26 AM
> Subject: Re: modifying existing index
>
> > On Tue, 2004-11-23 at 13:59, Santosh wrote:
> > > I am using lucene for indexing, when I am creating Index the docuemnts
> are added. but when I want to modify the single existing document and
> reIndex again, it is taking as new document and adding one more time, so
> that I am getting same document twice in the results.
> > > To overcome this I am deleting existing Index and again recreating whole
> Index. but is it possibe to index the modified document again and overwrite
> existing document without deleting and recreation. can I do this? If so how?
> >
> > You do not need to recreate the whole index. Just mark the document as
> > deleted using the IndexReader and then add it again with the
> > IndexWriter. Remember to close your IndexReader and IndexWriter after
> > doing this.
> >
> > The deleted document will be removed the next time you optimize your
> > index.
> >
> > Luke Francl
> >
> >
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--
Cheolgoo, Kang
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