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Subject: hits.length() changes during delete process. 
Date: Fri, 3 Dec 2004 16:05:10 -0000
Message-ID: <D98ADD74A4E07445A943A90A184B519937950F@zebedee.magus.co.uk>
Thread-Topic: hits.length() changes during delete process. 
Thread-Index: AcTZUee9aqk2+9fwR1G6GOq0yee7SQ==
From: "David Townsend" <david.townsend@magus.co.uk>
To: "Lucene Users List \(E-mail\)" <lucene-user@jakarta.apache.org>

I have a delete script

IndexSearcher searcher =3D new IndexSearcher(reader);

Hits hits =3D searcher.search(query);
log.info("there are " + hits.length() + " hits");

for (int i =3D 0; i < hits.length(); i++) {
  log.info(hits.length() + " " + i + " " + hits.id(i));
  reader.delete(hits.id(i));
}

which iterates through the results of a search and deletes the returns.  =
I keep getting an ArrayIndexOutOfBoundsException.  I've found the reason =
is that hits.length() actually changes during the iteration in large =
regular steps i.e=20

The hits length is initially 10003

after 100 deletions hits.length() changes to  9903
after 200 deletions hits.length() changes to 9803

then changes after=20
200 deletions
400
800
1600
3200

So the short question is, should the hits object be changing and what is =
the best way to delete all the results of a search (it's a range query =
so I can't use delete(Term term)?=20

cheers.

David

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