I have to Tag a document based on User request. On deletion, I should do
'marked for delete' and on document state change, i need to update the
document.
Update internally does delete and add. I am commiting the writer and
re-opening the reader, every minute.
Consider, In a minute, lets say User has deleted a document from the UI.
If i use IndexWriter, then it is updating the document. but it is getting
refreshed only after a minute. If User refreshes his page, then he could see
the deleted item again.
In order to avoid this situitation, i need to plan
1. Delete the document using reader
2. Add the document with new state using Writer.
I think, we can't avoid using DeleteDocument of Reader. Suggest me, if there
is any other way.
Regards
Ganesh
----- Original Message -----
From: "Antony Bowesman" <[EMAIL PROTECTED]>
To: <java-user@lucene.apache.org>
Sent: Wednesday, November 26, 2008 4:00 AM
Subject: Re: Which is faster/better
Michael McCandless wrote:
If you have nothing open already, and all you want to do is delete
certain documents and make a commit point, then using IndexReader vs
IndexWriter should show very little difference in speed.
Thanks. This use case can assume there may be nothing open. I prefer
IndexWriter as delete=write is a much clearer concept that delete=read...
As of 2.4, IndexWriter now provides delete-by-Query, which I think
ought to meet nearly all of the cases where someone wants to
delete-by-docID using IndexReader.
Yes, that is an excellent addition. Up to now, our only use case for
delete-by-docId is to perform a dBQ and so far, we have been using your
suggestion from last year about how to do delete documents for ALL terms.
Antony
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