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https://issues.apache.org/jira/browse/LUCENE-2330?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Shai Erera resolved LUCENE-2330.
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Resolution: Won't Fix
Fix Version/s: (was: 4.2)
(was: 5.0)
I don't think this issue is relevant anymore.
> Allow easy extension of IndexWriter
> -----------------------------------
>
> Key: LUCENE-2330
> URL: https://issues.apache.org/jira/browse/LUCENE-2330
> Project: Lucene - Core
> Issue Type: Improvement
> Components: core/index
> Reporter: Shai Erera
>
> IndexWriter is not so easy to extend. It hides a lot of useful methods from
> extending classes as well as useful members (like infoStream). Most of this
> stuff is very straightforward and I believe it's not exposed for no
> particular reason. Over in LUCENE-1879 I plan extend IndexWriter to provide a
> ParallelWriter which will support the parallel indexing requirements. For
> that I'll need access to several methods and members. I plan to contain in
> this issue some simple hooks, nothing fancy (and hopefully controversial).
> I'll leave the rest to specific issues. For now:
> # Introduce a protected default constructor and init(Directory,
> IndexWriterConfig). That's required because ParallelWriter does not itself
> index anything, but instead delegates to its Slices. So that ctor is for
> convenience only, and I'll make it clear (through javadocs) that if one uses
> it, one needs to call init(). PQ has the same pattern.
> # Expose some members and methods that are useful for extensions (such as
> config, infoStream etc.). Some candidates are package-private methods, but
> these will be reviewed and converted on a case by case basis.
> I don't plan to do anything drastic here, just prepare IW for easier
> extendability.
> I'll post a patch after LUCENE-2320 is committed.
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