Hello,
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:
> 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)
The sample code:
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);
--
Michał Słomkowski
