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From "Franklin Simmons (JIRA)" <j...@apache.org>
Subject [jira] Issue Comment Edited: (LUCENENET-183) SegmentTermVector IndexOf method always fails
Date Mon, 01 Jun 2009 21:31:07 GMT

    [ https://issues.apache.org/jira/browse/LUCENENET-183?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12715270#action_12715270
] 

Franklin Simmons edited comment on LUCENENET-183 at 6/1/09 2:30 PM:
--------------------------------------------------------------------

Since QueryTermVector#ProcessTerms invokes System.Array.Sort and System.Array.BinarySearch
with the default comparer (String) it is not subject to the bug.

      was (Author: franklin):
    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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