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Posted to dev@lucene.apache.org by "David Smiley (JIRA)" <ji...@apache.org> on 2018/04/19 17:14:00 UTC
[jira] [Commented] (SOLR-12242) UnifiedHighlighter does not work
with Surround query parser (SurroundQParser)
[ https://issues.apache.org/jira/browse/SOLR-12242?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16444402#comment-16444402 ]
David Smiley commented on SOLR-12242:
-------------------------------------
Thanks for raising this issue. It's similar to LUCENE-7757 which is support for the ComplexPhraseQParserPlugin; check that issue out. It's temping to pass the live IndexSearcher to extractTerms but that's potentially dangerous if the query contains wildcards – we *don't* want to extract all terms from a wildcard query on the index reader.
> UnifiedHighlighter does not work with Surround query parser (SurroundQParser)
> -----------------------------------------------------------------------------
>
> Key: SOLR-12242
> URL: https://issues.apache.org/jira/browse/SOLR-12242
> Project: Solr
> Issue Type: Bug
> Security Level: Public(Default Security Level. Issues are Public)
> Components: highlighter
> Affects Versions: 7.2.1
> Reporter: Andy Liu
> Priority: Major
> Attachments: TestUnifiedHighlighterSurround.java
>
>
> I'm attempting to use the UnifiedHighlighter in conjunction with queries parsed by Solr's SurroundQParserPlugin. When doing so, the response yields empty arrays for documents that should contain highlighted snippets.
> I've attached a test for UnifiedHighlighter that uses the surround's QueryParser and preprocesses the query in a similar fashion as SurroundQParser, which results in test failure. When creating a SpanQuery directly (rather via surround's QueryParser), the test passes.
> The problem can be isolated to the code path initiated by UnifiedHighlighter.extractTerms(), which uses EMPTY_INDEXSEARCHER to extract terms from the query. After a series of method calls, we end up at DistanceQuery.getSpanNearQuery(), where {{((DistanceSubQuery)sqi.next()).addSpanQueries(sncf)}} fails silently and doesn't add any span queries.
> Another data point: If I hack UnifiedHighlighter and pass in a live IndexSearcher to extractTerms(), highlighting works.
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