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https://issues.apache.org/jira/browse/LUCENE-1131?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12628991#action_12628991
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Michael McCandless commented on LUCENE-1131:
--------------------------------------------
bq. What if we implement numDeletedDocs() in IndexReader, instead of defining
it abstract?
Right, that's exactly what I'm thinking, with this body:
{code}
public int numDeletedDocs() {
return maxDoc() - numDocs();
}
{code}
Then I think no classes need to override it (perf cost of calling 2 methods is
tiny)?
> Add numDeletedDocs to IndexReader
> ---------------------------------
>
> Key: LUCENE-1131
> URL: https://issues.apache.org/jira/browse/LUCENE-1131
> Project: Lucene - Java
> Issue Type: New Feature
> Reporter: Shai Erera
> Assignee: Otis Gospodnetic
> Priority: Minor
> Fix For: 2.4
>
> Attachments: LUCENE-1131.patch
>
>
> Add numDeletedDocs to IndexReader. Basically, the implementation is as simple
> as doing:
> public int numDeletedDocs() {
> return deletedDocs == null ? 0 : deletedDocs.count();
> }
> in SegmentReader.
> Patch to follow to include in all IndexReader extensions.
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