On Oct 5, 2005, at 8:56 AM, Eugeny N Dzhurinsky wrote:
On Wed, Oct 05, 2005 at 08:38:21AM -0400, Erik Hatcher wrote:
But could Lucene mix up 2 indexes in single query?
Using ParallelReader - yes. Read the javadocs to learn more.
May be MultiReader? I didn't find ParallelReader in my API docs for
Lucene
1.4.3.
*arg* :) As I said in my original message... ParallelReader is in
Subversion trunk. It does not exist in a released version of Lucene
yet. It will be part of 1.9. The trunk of Subversion is quite
stable - feel free to build Lucene from there and use it.
let's say we have index of documents, each document has it's own
unique ID.
and we have another index of ACLs for each document. Is it possible
to use
some kind of "join" for the document index and for the ACL index,
and create
search query, which will instantly validate the ACL for document,
using UID
key in both document index and acl index?
This is basically what ParallelReader does - joins two parallel
indexes that line up _exactly_ in document insertion order.
I'm just trying to avoid post-filtering at all.
One strong recommendation I make regarding Lucene (and coding in
general): don't pre-suppose things about performance. Implement the
solution in the cleanest most logical way, try it, and if there are
issues, then tune.
P.S. Really useful book, I like it.
Thank you!
Erik
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