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From "Shai Erera (JIRA)" <j...@apache.org>
Subject [jira] Commented: (LUCENE-1849) Add OutOfOrderCollector and InOrderCollector subclasses of Collector
Date Mon, 24 Aug 2009 14:58:59 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-1849?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12746904#action_12746904
] 

Shai Erera commented on LUCENE-1849:
------------------------------------

But then what will classes like TopFieldCollector and TopScoreDocCollector will do? They won't
be able to extend from any of them because a Collector may support both, one impl more efficient
than the other.

Of course it doesn't mean that every Collector needs to extend either of these, but I wonder
if it's such a big deal to decide on your own, once you've decided to write a Collector, if
you support it or not.

Those two do not do any harm, but we'll just need to maintain them going forward, and I wonder
if they are really that useful ...

> 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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