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https://issues.apache.org/jira/browse/LUCENE-4479?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13475045#comment-13475045
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Robert Muir commented on LUCENE-4479:
-------------------------------------
I'm not sure whats going on here :) If you can sort it out it would be
fantastic.
In general if the method requires that the Terms object has offsets or
positions the checks should just look like:
if (tpv.hasOffsets())
...
if (tpv.hasPositions())
...
But I'm really confused what the contracts of these methods should be.
definitely bugs :)
> TokenSources.getTokenStream() doesn't return correctly for termvectors with
> positions but no offsets
> ----------------------------------------------------------------------------------------------------
>
> Key: LUCENE-4479
> URL: https://issues.apache.org/jira/browse/LUCENE-4479
> Project: Lucene - Core
> Issue Type: Bug
> Components: modules/highlighter
> Affects Versions: 4.0
> Reporter: Alan Woodward
> Priority: Minor
> Attachments: LUCENE-4479.patch
>
>
> The javadocs for TokenSources.getTokenStream(Terms, boolean) state:
> "Low level api. Returns a token stream or null if no offset info available
> in index. This can be used to feed the highlighter with a pre-parsed token
> stream"
> However, if the Terms instance passed in has positions but no offsets stored,
> a TokenStream is incorrectly returned, rather than null.
> This has the effect of incorrectly highlighting fields with term vectors and
> positions, but no offsets. All highlighting markup is prepended to the
> beginning of the field.
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