lucene-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "paul.elschot (JIRA)" <>
Subject [jira] Commented: (LUCENE-584) Decouple Filter from BitSet
Date Tue, 27 Jun 2006 22:48:31 GMT
    [ ] 

paul.elschot commented on LUCENE-584:

I've started to improve the javadocs of almost all code posted here, so it's probably not
worthwhile to commit this as it is now.
I don't expect changes to the java code in the short term.

Paul Elschot

> Decouple Filter from BitSet
> ---------------------------
>          Key: LUCENE-584
>          URL:
>      Project: Lucene - Java
>         Type: Improvement

>   Components: Search
>     Versions: 2.0.1
>     Reporter: Peter Schäfer
>     Priority: Minor
>  Attachments:, Filter-20060626.patch, HitCollector-20060626.patch, IndexSearcher-20060626.patch,,, Scorer-20060626.patch, Searcher-20060626.patch,,
> {code}
> package;
> public abstract class Filter implements 
> {
>   public abstract AbstractBitSet bits(IndexReader reader) throws IOException;
> }
> public interface AbstractBitSet 
> {
>   public boolean get(int index);
> }
> {code}
> It would be useful if the method =Filter.bits()= returned an abstract interface, instead
of =java.util.BitSet=.
> Use case: there is a very large index, and, depending on the user's privileges, only
a small portion of the index is actually visible.
> Sparsely populated =java.util.BitSet=s are not efficient and waste lots of memory. It
would be desirable to have an alternative BitSet implementation with smaller memory footprint.
> Though it _is_ possibly to derive classes from =java.util.BitSet=, it was obviously not
designed for that purpose.
> That's why I propose to use an interface instead. The default implementation could still
delegate to =java.util.BitSet=.

This message is automatically generated by JIRA.
If you think it was sent incorrectly contact one of the administrators:
For more information on JIRA, see:

To unsubscribe, e-mail:
For additional commands, e-mail:

View raw message