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Date: Tue, 16 Oct 2007 20:17:51 -0700 (PDT)
From: "Karl Wettin (JIRA)" <jira@apache.org>
To: java-dev@lucene.apache.org
Subject: [jira] Updated: (LUCENE-550) InstantiatedIndex - faster but memory
 consuming index
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     [ https://issues.apache.org/jira/browse/LUCENE-550?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Karl Wettin updated LUCENE-550:
-------------------------------

    Attachment: LUCENE-550_20071017_no_core_changes.txt

In this path:

 * As the Segment-dito, non-mapper term vector methods returns null rather than throwing NPE when term vector is not available.

> InstantiatedIndex - faster but memory consuming index
> -----------------------------------------------------
>
>                 Key: LUCENE-550
>                 URL: https://issues.apache.org/jira/browse/LUCENE-550
>             Project: Lucene - Java
>          Issue Type: New Feature
>          Components: Store
>    Affects Versions: 2.0.0
>            Reporter: Karl Wettin
>            Assignee: Grant Ingersoll
>         Attachments: HitCollectionBench.jpg, lucene-550.jpg, LUCENE-550_20070804_no_core_changes.txt, LUCENE-550_20070808_no_core_changes.txt, LUCENE-550_20070817_no_core_changes.txt, LUCENE-550_20070928_no_core_changes.txt, LUCENE-550_20071008_no_core_changes.txt, LUCENE-550_20071017_no_core_changes.txt, test-reports.zip, trunk.diff.bz2, trunk.diff.bz2, trunk.diff.bz2, trunk.diff.bz2, trunk.diff.bz2, trunk.diff.bz2, trunk.diff.bz2, trunk.diff.bz2, trunk.diff.bz2, trunk.diff.bz2, trunk.diff.bz2
>
>
> An non file centrinc all in memory index. Consumes some 2x the memory of a RAMDirectory (in a term satured index) but is between 3x-60x faster depending on application and how one counts. Average query is about 8x faster. IndexWriter and IndexModifier have been realized in InterfaceIndexWriter and InterfaceIndexModifier. 
> InstantiatedIndex is wrapped in a new top layer index facade (class Index) that comes with factory methods for writers, readers and searchers for unison index handeling. There are decorators with notification handling that can be used for automatically syncronizing searchers on updates, et.c. 
> Index also comes with FS/RAMDirectory implementation.

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