[ http://issues.apache.org/jira/browse/LUCENE-550?page=all ]
Karl Wettin updated LUCENE-550:
-------------------------------
Attachment: InstanciatedIndexTermEnum.java
ArrayBoundsOutOfIndex-bugfix.
If eveything works as it should (I think so) then I'm happy to report that a
FuzzyQuery seems to be about 1500 (one thousand five hundred) times faster on
this memory implementation than on a RAMDirectory. The speed is gained by not
creating a new instance of each Term in a TermEnum.
> InstanciatedIndex - faster but memory consuming index
> -----------------------------------------------------
>
> Key: LUCENE-550
> URL: http://issues.apache.org/jira/browse/LUCENE-550
> Project: Lucene - Java
> Type: New Feature
> Components: Store
> Versions: 1.9
> Reporter: Karl Wettin
> Attachments: InstanciatedIndexTermEnum.java, class_diagram.png,
> class_diagram.png, instanciated_20060527.tar, lucene.1.9-karl1.jpg
>
> After fixing the bugs, it's now 4.5 -> 5 times the speed. This is true for
> both at index and query time. Sorry if I got your hopes up too much. There
> are still things to be done though. Might not have time to do anything with
> this until next month, so here is the code if anyone wants a peek.
> Not good enough for Jira yet, but if someone wants to fool around with it,
> here it is. The implementation passes a TermEnum -> TermDocs -> Fields ->
> TermVector comparation against the same data in a Directory.
> When it comes to features, offsets don't exists and positions are stored ugly
> and has bugs.
> You might notice that norms are float[] and not byte[]. That is me who
> refactored it to see if it would do any good. Bit shifting don't take many
> ticks, so I might just revert that.
> I belive the code is quite self explaining.
> InstanciatedIndex ii = ..
> ii.new InstanciatedIndexReader();
> ii.addDocument(s).. replace IndexWriter for now.
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