This is true, but you'd need to optimise if you want additions to show up - also means getting a new IndexSearcher each time which is not workable for some Lucene applications (esp if you've pre-built filters and caches). I think the suggestion to use the new memory class is a good one.
----- Original Message ---- From: Amir Hosein Jadidi Nejad <[EMAIL PROTECTED]> To: java-user@lucene.apache.org Sent: Friday, 12 May, 2006 10:30:23 AM Subject: Re: Can lucene do this? Hi, You can add per document to index without indexing all document from scratch ! You have real time transactions in this way. Regard, Scott Smith <[EMAIL PROTECTED]> wrote: I'm building an application which has to provide "real-time" searching of emails as they come in. I have a number of search strings that I need to apply against each email as it comes in and then do something with the email based on which search string(s) get a hit. My initial thought was to create a lucene index of the emails received in the last N seconds (where N is around 5 since I don't have to be quite real-time) in a memory directory, do my searches and then delete the index and create a new index for emails received in the next 5 seconds. I'm a little concerned because the number of search strings will probably grow over time and so there is a bit of a scalability issue-though I'm not sure there's anyway around that other than doing parallel processing on different machines. I'm wondering if anyone has any experience doing this kind of thing and has additional or alternate suggestions?? Scott ------------------------------------------------------------------- Amir Hosein Jadidi Nejad Student Of Computer Science Bu-Ali Sina University, Hamedan-Iran E-Mail : [EMAIL PROTECTED] , [EMAIL PROTECTED] --------------------------------- Yahoo! Messenger with Voice. PC-to-Phone calls for ridiculously low rates. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]