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From Brian <okm...@yahoo.com>
Subject Re: UpdateIndex
Date Wed, 24 Aug 2005 19:02:04 GMT
Would you want to update, or could you just append to
an existing Index?
Thanks, B

--- Ray Tsang <saturnism@gmail.com> wrote:

> This could be off topic, but I made something that
> updates indices
> that worked like the following, wonder if anybody
> has the same ideas? 
> I found something like IndexAccessControl in the
> mailing list before. 
> An implementation of the following uses IAC.
> 
> ManagedIndex index =
> ManagedIndex.getInstance(configuration); // could
> return different implemetnations of the ManagedIndex
> 
> Searcher searcher = index.getSearcher();  // could
> return different
> implementations of Searcher
> 
> ManagedUpdateSession session = index.beginUpdate(); 
> // start a update session
> 
> session.addDocument(...); // use session to add,
> delete, update documents
> session.deleteDocument(...);
> session.updateDocument(...);
> 
> // lastly
> index.endUpdate(); // or.. session.commit()?  marks
> the end of the
> update sequence, refresh the searchers.
> 
> IndexReader, IndexWriter, indexSearcher would be
> managed, and there
> can be multiple implementations of how index is
> structured, e.g.
> RotatingIndex, AlternatingIndex, that rotates
> document updates to
> different indices.
> 
> Ray,
> 
> On 8/23/05, Otis Gospodnetic
> <otis_gospodnetic@yahoo.com> wrote:
> > Yes, this is not how you should do it.
> > Use reader.delete(Term) method to delete
> documents:
> >
>
http://lucene.apache.org/java/docs/api/org/apache/lucene/index/IndexReader.html#delete(org.apache.lucene.index.Term)
> > 
> > Otis
> > 
> > --- dozean@gmx.de wrote:
> > 
> > > Hi,
> > >
> > > i wrote an Index update, where first the
> IndexReader
> > > delete all files from index which are changed.
> > > Than add documents which are not in the index!
> > >
> > > Alone the deletion take so long, because i have
> 2 "for" loops!
> > >
> > > file = array with all files in a directory
> > >
> > > for (int i = 0; i<file.length; i++) {
> > >       if (file[i].isFile()) {
> > >    for (int j =0; j<reader.numDocs(); j++) {
> > >       if (file[i].getName() ==
> reader.document(j).get("name") &&
> > >       file[i].lastModified() >
> > >
> Integer.parseInt(reader.document(j).get("date")))
> > > {                                            
> reader.delete(j);
> > >      }
> > > }
> > >
> > > Maybe this is the wrong way?
> > >
> > > Bye Derya
> > >
> > >
> > > --
> > > 5 GB Mailbox, 50 FreeSMS
> http://www.gmx.net/de/go/promail
> > > +++ GMX - die erste Adresse für Mail, Message,
> More +++
> > >
> > >
>
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> > 
> >
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