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From "Michael McCandless (JIRA)" <j...@apache.org>
Subject [jira] Commented: (LUCENE-1849) Add OutOfOrderCollector and InOrderCollector subclasses of Collector
Date Tue, 25 Aug 2009 19:13:59 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-1849?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12747584#action_12747584
] 

Michael McCandless commented on LUCENE-1849:
--------------------------------------------

I would prefer not to make a default here, ie, force an explicit
choice, because it is an expert API.

BooleanQuery gets sizable gains in performance if you let it return
docs out of order.  If we default it (to false), most users won't
realize how much performance they're accidentally losing.


> Add OutOfOrderCollector and InOrderCollector subclasses of Collector
> --------------------------------------------------------------------
>
>                 Key: LUCENE-1849
>                 URL: https://issues.apache.org/jira/browse/LUCENE-1849
>             Project: Lucene - Java
>          Issue Type: Wish
>          Components: Search
>    Affects Versions: 2.9
>            Reporter: Tim Smith
>            Priority: Minor
>             Fix For: 2.9
>
>
> I find myself always having to implement these methods, and i always return a constant
(depending on if the collector can handle out of order hits)
> would be nice for these two convenience abstract classes to exist that implemented acceptsDocsOutOfOrder()
as final and returned the appropriate value

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