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https://issues.apache.org/jira/browse/LUCENE-1203?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12613341#action_12613341
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Yonik Seeley commented on LUCENE-1203:
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.bq If this is true, how would I set the refreshed instance of IndexReader to
existing IndexSearcher?
Create a new IndexSearcher with the existing reader. To put it in context,
it's cheaper than creating a String.
> [PATCH] Allow setting IndexReader to IndexSearcher
> --------------------------------------------------
>
> Key: LUCENE-1203
> URL: https://issues.apache.org/jira/browse/LUCENE-1203
> Project: Lucene - Java
> Issue Type: Improvement
> Components: Search
> Affects Versions: 2.3.1
> Environment: Linux/2.6
> Reporter: Mindaugas Žakšauskas
> Attachments: IndexReaderSetter4IndexSearcher.patch
>
>
> As I've received no counter-arguments for my Lucene Java-User mailing list
> (see
> http://mail-archives.apache.org/mod_mbox/lucene-java-user/200803.mbox/[EMAIL
> PROTECTED]), I would like to propose adding a setter to set new instance of
> IndexReader to IndexSearcher.
> Why is this needed?
> The FAQ
> (http://wiki.apache.org/lucene-java/LuceneFAQ#head-48921635adf2c968f7936dc07d51dfb40d638b82)
> says:
> bq. ??"Make sure you only open one IndexSearcher, and share it among all of
> the threads that are doing searches -- this is safe, and it will minimize the
> number of files that are open concurently."??
> So does the JavaDoc
> (http://lucene.apache.org/java/2_3_1/api/core/org/apache/lucene/search/IndexSearcher.html).
> In my application, I don't want to expose anything about IndexReader; all
> they need to know is Searcher - see my post to the mailing list how would I
> do this. However, if the index is updated, reopened reader cannot be set back
> to IndexSearcher, a new instance of IndexSearcher needs to be created (*which
> contradicts FAQ and Javadoc*).
> At the moment, the only way to go around this is to create a surrogate
> subclass of IndexSearcher and set new instance of IndexReader. A simple
> setter would just do the job.
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