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https://issues.apache.org/jira/browse/LUCENE-1088?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12550964
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Nadav Har'El commented on LUCENE-1088:
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Michael, I agree - the most important fix was to make heap protected (and not
private). After that, you're right, insertWithOverflow() and wouldBeInserted()
could be implemented in a subclass in or even outside Lucene. Whether or not to
include these new methods in the basic PriorityQueue should depend, I think, on
how commonly needed these features will be for users, and whether we want to
use them inside Lucene (like Shai's patches for TopDocCollector and other
classes was doing)..
> PriorityQueue 'wouldBeInserted' method
> --------------------------------------
>
> Key: LUCENE-1088
> URL: https://issues.apache.org/jira/browse/LUCENE-1088
> Project: Lucene - Java
> Issue Type: New Feature
> Components: Other
> Reporter: Peter Keegan
> Assignee: Michael McCandless
> Attachments: LUCENE-1088.patch
>
>
> This is a request for a new method in PriorityQueue
> public boolean wouldBeInserted(Object element)
> // returns true if doc would be inserted, without inserting
> This would allow an application to prevent duplicate entries from being added
> to the queue.
> Here is a reference to the discussion behind this request:
> http://www.nabble.com/FieldSortedHitQueue-enhancement-to9733550.html#a9733550
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