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https://issues.apache.org/jira/browse/LUCENENET-183?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12715270#action_12715270
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Franklin Simmons commented on LUCENENET-183:
--------------------------------------------
Since QueryTermVector#ProcessTerms invokes System.Array.Sort and BinarySearch
with the default comparer (String) it is not subject to the bug.
> SegmentTermVector IndexOf method always fails
> ---------------------------------------------
>
> Key: LUCENENET-183
> URL: https://issues.apache.org/jira/browse/LUCENENET-183
> Project: Lucene.Net
> Issue Type: Bug
> Reporter: Franklin Simmons
> Attachments: SegmentTermVector-2.patch, SegmentTermVector.patch
>
>
> At index time term vectors are sorted using String.CompareOrdinal. However
> method IndexOf of class SegmentTermVector invokes System.Array.BinarySearch,
> which is using String.Compare.
> {noformat}public virtual int IndexOf(System.String termText)
> {
> if (terms == null)
> return - 1;
> int res = System.Array.BinarySearch(terms, termText);
> return res >= 0 ? res : - 1;
> }
> {noformat}
> The effect is that the IndexOf method always returns a negative number (no
> match) because the sort order is incompatible with the default comparer.
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