Lucene is not a word processor. It is a development library. I think
an understanding of any development library is essential to using it
properly. Once you have even a basic understanding of the Lucene
design, it is very clear as to why deletes are performed using the
IndexReader.
If you attempt to use Lucene without understanding its use proper and
design (there are many people on this list that think it is a
database) you will probably get most things wrong.
On Feb 13, 2007, at 1:17 AM, Nadav Har'El wrote:
On Fri, Feb 09, 2007, jian chen wrote about "Re: NewIndexModifier -
- - DeletingIndexWriter":
Following the Lucene dev mailing list for sometime now, I am
concerned that
lucene is slowing losing all the simplicity and become a
complicated mess.
I think keeping IndexReader and IndexWriter the way it works in
1.2 even is
better, no?
Software should be designed to be simple to use and maintain,
that's my
concern.
Hi, I wonder - how do you see the original IndexReader and IndexWriter
separation "simple to use"?
Every single user of Lucene that I know, encountered very quickly
the problem
of how to delete documents; Many of them started to use
IndexModifier, and
then suddenly realized its performance makes it unusable; Many (as
you can
also see from examples sent to the user list once in a while) ended
up writing
their own complex code for buffering deletes (and similar solutions).
So for users, the fact that an index "writer" cannot delete, but
rather an
index "reader" (!) is the one that can delete documents, wasn't
simplicity -
it was simply confusing, and hard to use. It meant each user needed
to work
hard to get around this limitation. Wouldn't it be better if Lucene
included
this functionality that many (if not most) users need, out of the box?
--
Nadav Har'El | Tuesday, Feb 13 2007, 25
Shevat 5767
IBM Haifa Research Lab
|-----------------------------------------
|Just remember that if the
world didn't
http://nadav.harel.org.il |suck, we would all fall off.
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