RamDirectory vs IndexWriter

[WATHELET Thomas <th...@europarl.europa.eu>]

I don't really understand the difference between using the ramDirectory
and using IndexWriter.

What's the difference between using ramDirectory instead of using
IndexWriter with those properties set to:
setMergeFactor(1000);setMaxMergeDocs(10000);setMaxBufferedDocs(10000);

Re: RamDirectory vs IndexWriter

[Erick Erickson <er...@gmail.com>]

I guess it depends upon your goal. If you're asking what the difference
between writing to a RAMDirectory *then* flushing to an FSDIrectory,
I don't believer there's much, if any. As I remember (and my memory
isn't always...er...accurate), there's been discussion on this thread
by those who know that underneath the covers an FSDirecotyr
uses a RAMDirectory for a while, then flushes it to disk.

If you're asking what the difference between a RAMDirectory is
and an FSDirectory, that's another story.

Erick


On 2/28/07, WATHELET Thomas <th...@europarl.europa.eu> wrote:
>
> I don't really understand the difference between using the ramDirectory
> and using IndexWriter.
>
> What's the difference between using ramDirectory instead of using
> IndexWriter with those properties set to:
> setMergeFactor(1000);setMaxMergeDocs(10000);setMaxBufferedDocs(10000);
>
>

Re: RamDirectory vs IndexWriter

[Nicolas Lalevée <ni...@anyware-tech.com>]

Le Mercredi 28 Février 2007 16:19, WATHELET Thomas a écrit :
> I don't really understand the difference between using the ramDirectory
> and using IndexWriter.
>
> What's the difference between using ramDirectory instead of using
> IndexWriter with those properties set to:
> setMergeFactor(1000);setMaxMergeDocs(10000);setMaxBufferedDocs(10000);

The two classes are not designed to accomplish the same feature. The 
IndexWriter write documents in a Directory. And a RAMDirectory is a special 
implementation of a Directory which is holding the data in RAM, rather than 
holding them on a file system like the FSDirectory.

-- 
Nicolas LALEVÉE
Solutions & Technologies
ANYWARE TECHNOLOGIES
Tel : +33 (0)5 61 00 52 90
Fax : +33 (0)5 61 00 51 46
http://www.anyware-tech.com

---------------------------------------------------------------------
To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org
For additional commands, e-mail: java-user-help@lucene.apache.org