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https://issues.apache.org/jira/browse/LUCENE-2542?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Uwe Schindler updated LUCENE-2542:
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Fix Version/s: (was: 3.0.2)
Lucene Fields: [New] (was: [New, Patch Available])
> TopDocsCollector should be abstract super class that is the real
> "TopDocsCollector" contract, a subclass should implement the priority-queue
> logic. e.g. PQTopDocsCollector
> ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: LUCENE-2542
> URL: https://issues.apache.org/jira/browse/LUCENE-2542
> Project: Lucene - Java
> Issue Type: Improvement
> Components: Search
> Affects Versions: 3.0.2
> Reporter: Woody Anderson
> Fix For: 4.0
>
>
> TopDocsCollector is both an abstract interface for producing TopDocs as well
> as a PriorityQueue based implementation.
> Not all Collectors that could produce TopDocs must use a PriorityQueue, and
> it would be advantageous to allow the TopDocsCollector to be an "interface"
> type abstract class, with a PQTopDocsCollector sub-class.
> While doing this, it'd be good to clean up the generics uses in these
> classes. As it's odd to create a TopFieldCollector and have to case the
> TopDocs object, when this can be fixed with generics.
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