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https://issues.apache.org/jira/browse/LUCENE-550?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Karl Wettin updated LUCENE-550:
-------------------------------
Attachment: trunk.diff.bz2
Introduced a method in instantiated index that appends the entire content to
any other index.
{code}
/**
* Adds the complete content of this instantiated index on to any other index
using an index writer.
* <p/>
* This can for instance be used for
* merging multiple instantiated indices
* and periodically storing persistent snapshots in an FSDirectory.
* <p/>
* Non stored offsets are partially rebuilt. This can be improved quite a
bit. See comments in code.
* <p/>
* The analyzer creates one complete token stream of all fields with the same
name the first time it is requested,
* and after that an empty for each remaining. todo: this is a problem?
* <p/>
* It can be buggy if the same token appears as synonym to it self (position
increment 0). not really something to worry about.. or?
*
* @param indexWriter represents the index on wich to add all the content of
this instantiated index.
* @throws IOException when accessing parameter indexWriter
*/
public void writeToIndex(IndexWriterInterface indexWriter) throws IOException
{
{code}
> 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
> Assigned To: Karl Wettin
> Attachments: lucene-550.jpg, test-reports.zip, 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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