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https://issues.apache.org/jira/browse/LUCENE-4312?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16882091#comment-16882091
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Alan Woodward commented on LUCENE-4312:
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I've opened a PR with a simple implementation of this as an IntervalsSource:
https://github.com/apache/lucene-solr/pull/772
Note that this currently works only with index-time graphs; currently the logic
for rewriting query-time graphs relies on the fact that the only sources with a
minimum extent of 1 are simple terms, and this new source breaks that
assumption. I think we can fix that with the addition of another method to
IntervalsSource, but I'm trying to keep things as simple as possible to begin
with.
> Index format to store position length per position
> --------------------------------------------------
>
> Key: LUCENE-4312
> URL: https://issues.apache.org/jira/browse/LUCENE-4312
> Project: Lucene - Core
> Issue Type: Improvement
> Components: core/codecs
> Affects Versions: 6.0
> Reporter: Gang Luo
> Priority: Minor
> Labels: Suggestion
> Original Estimate: 72h
> Remaining Estimate: 72h
>
> Mike Mccandless said:TokenStreams are actually graphs.
> Indexer ignores PositionLengthAttribute.Need change the index format (and
> Codec APIs) to store an additional int position length per position.
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