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Posted to dev@lucene.apache.org by "Michael McCandless (JIRA)" <ji...@apache.org> on 2010/09/19 12:21:32 UTC
[jira] Resolved: (LUCENE-2647) Move & rename the terms dict, index,
abstract postings out of oal.index.codecs.standard
[ https://issues.apache.org/jira/browse/LUCENE-2647?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Michael McCandless resolved LUCENE-2647.
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Resolution: Fixed
> Move & rename the terms dict, index, abstract postings out of oal.index.codecs.standard
> ---------------------------------------------------------------------------------------
>
> Key: LUCENE-2647
> URL: https://issues.apache.org/jira/browse/LUCENE-2647
> Project: Lucene - Java
> Issue Type: Improvement
> Components: Index
> Affects Versions: 4.0
> Reporter: Michael McCandless
> Assignee: Michael McCandless
> Priority: Minor
> Fix For: 4.0
>
> Attachments: LUCENE-2647.patch, LUCENE-2647.patch
>
>
> The terms dict components that current live under Standard codec
> (oal.index.codecs.standard.*) are in fact very generic, and in no way
> particular to the Standard codec. Already we have many other codecs
> (sep, fixed int block, var int block, pulsing, appending) that re-use
> the terms dict writer/reader components.
> So I'd like to move these out into oal.index.codecs, and rename them:
> * StandardTermsDictWriter/Reader -> PrefixCodedTermsWriter/Reader
> * StandardTermsIndexWriter/Reader -> AbstractTermsIndexWriter/Reader
> * SimpleStandardTermsIndexWriter/Reader -> SimpleTermsIndexWriter/Reader
> * StandardPostingsWriter/Reader -> AbstractPostingsWriter/Reader
> * StandardPostingsWriterImpl/ReaderImple -> StandardPostingsWriter/Reader
> With this move we have a nice reusable terms dict impl. The terms
> index impl is still well-decoupled so eg we could [in theory] explore
> a variable gap terms index.
> Many codecs, I expect, don't need/want to implement their own terms
> dict....
> There are no code/index format changes here, besides the renaming &
> fixing all imports/usages of the renamed class.
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