[jira] Assigned: (LUCENE-1356) Allow easy extensions of TopDocCollector

["Doron Cohen (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/LUCENE-1356?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Doron Cohen reassigned LUCENE-1356:
-----------------------------------

    Assignee: Doron Cohen

> Allow easy extensions of TopDocCollector
> ----------------------------------------
>
>                 Key: LUCENE-1356
>                 URL: https://issues.apache.org/jira/browse/LUCENE-1356
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: Index
>            Reporter: Shai Erera
>            Assignee: Doron Cohen
>            Priority: Minor
>         Attachments: 1356.patch
>
>
> TopDocCollector's members and constructor are declared either private or package visible. It makes it hard to extend it as if you want to extend it you can reuse its *hq* and *totatlHits* members, but need to define your own. It also forces you to override getTotalHits() and topDocs().
> By changing its members and constructor (the one that accepts a PQ) to protected, we allow users to extend it in order to get a different view of 'top docs' (like TopFieldCollector does), but still enjoy its getTotalHits() and topDocs() method implementations.

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