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Posted to issues@lucene.apache.org by "Adrien Grand (Jira)" <ji...@apache.org> on 2020/10/16 17:24:00 UTC

[jira] [Resolved] (LUCENE-9524) NullPointerException in IndexSearcher.explain() when using ComplexPhraseQueryParser

     [ https://issues.apache.org/jira/browse/LUCENE-9524?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Adrien Grand resolved LUCENE-9524.
----------------------------------
    Fix Version/s: 8.7
       Resolution: Fixed

> NullPointerException in IndexSearcher.explain() when using ComplexPhraseQueryParser
> -----------------------------------------------------------------------------------
>
>                 Key: LUCENE-9524
>                 URL: https://issues.apache.org/jira/browse/LUCENE-9524
>             Project: Lucene - Core
>          Issue Type: Bug
>          Components: core/queryparser, core/search
>    Affects Versions: 8.6, 8.6.2
>            Reporter: Michał Słomkowski
>            Priority: Major
>             Fix For: 8.7
>
>          Time Spent: 1.5h
>  Remaining Estimate: 0h
>
> I get NPE when I use {{IndexSearcher.explain()}}. Checked with Lucene 8.6.0
> and 8.6.2.
> The query: {{(lorem AND NOT "dolor lorem") OR ipsum}}
> The text: {{dolor lorem ipsum}}
> Stack trace:
> {code}
> java.lang.NullPointerException at java.util.Objects.requireNonNull(Objects.java:203)
> 	at org.apache.lucene.search.LeafSimScorer.<init>(LeafSimScorer.java:38)
> 	at org.apache.lucene.search.spans.SpanWeight.explain(SpanWeight.java:160)
> 	at org.apache.lucene.search.BooleanWeight.explain(BooleanWeight.java:87)
> 	at org.apache.lucene.search.BooleanWeight.explain(BooleanWeight.java:87)
> 	at org.apache.lucene.search.IndexSearcher.explain(IndexSearcher.java:716)
> 	at org.apache.lucene.search.IndexSearcher.explain(IndexSearcher.java:693)
> {code}
> Minimal example code:
> {code:java}
> val analyzer = new StandardAnalyzer();
> val query = new ComplexPhraseQueryParser("", analyzer).parse(queryString);
> final MemoryIndex memoryIndex = new MemoryIndex(true);
> memoryIndex.addField("", text, analyzer);
> final IndexSearcher searcher = memoryIndex.createSearcher();
> final TopDocs topDocs = searcher.search(query, 1);
> final ScoreDoc match = topDocs.scoreDocs[0];
> searcher.explain(query, match.doc);
> {code}



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