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List:       lucene-dev
Subject:    [jira] [Updated] (LUCENE-3786) Create SearcherTaxoManager
From:       "Mark Miller (JIRA)" <jira () apache ! org>
Date:       2012-12-31 19:16:12
Message-ID: JIRA.12542557.1329234248792.66438.1356981372694 () arcas
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     [ https://issues.apache.org/jira/browse/LUCENE-3786?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel \
]

Mark Miller updated LUCENE-3786:
--------------------------------

    Fix Version/s:     (was: 4.1)
                   5.0
                   4.2
    
> Create SearcherTaxoManager
> --------------------------
> 
> Key: LUCENE-3786
> URL: https://issues.apache.org/jira/browse/LUCENE-3786
> Project: Lucene - Core
> Issue Type: New Feature
> Components: modules/facet
> Reporter: Shai Erera
> Assignee: Shai Erera
> Priority: Minor
> Fix For: 4.2, 5.0
> 
> 
> If an application wants to use an IndexSearcher and TaxonomyReader in a \
> SearcherManager-like fashion, it cannot use a separate SearcherManager, and say a \
> TaxonomyReaderManager, because the IndexSearcher and TaxoReader instances need to \
> be in sync. That is, the IS-TR pair must match, or otherwise the category ordinals \
> that are encoded in the search index might not match the ones in the taxonomy \
> index. This can happen if someone reopens the IndexSearcher's IndexReader, but does \
> not refresh the TaxonomyReader, and the category ordinals that exist in the \
> reopened IndexReader are not yet visible to the TaxonomyReader instance. I'd like \
> to create a SearcherTaxoManager (which is a ReferenceManager) which manages an \
> IndexSearcher and TaxonomyReader pair. Then an application will call: {code}
> SearcherTaxoPair pair = manager.acquire();
> try {
> IndexSearcher searcher = pair.searcher;
> TaxonomyReader taxoReader = pair.taxoReader;
> // do something with them
> } finally {
> manager.release(pair);
> pair = null;
> }
> {code}

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