Michael Braun created LUCENE-7682:
-------------------------------------
Summary: UnifiedHighlighter not highlighting all terms relevant in
SpanNearQuery
Key: LUCENE-7682
URL: https://issues.apache.org/jira/browse/LUCENE-7682
Project: Lucene - Core
Issue Type: Bug
Components: modules/highlighter
Reporter: Michael Braun
Original text: "Something for protecting wildlife feed in a feed thing."
Query is:
SpanNearQuery with Slop 9 - in order -
1. SpanTermQuery(wildlife)
2. SpanTermQuery(feed)
This should highlight both instances of "feed" since they are both within slop
of 9 of "wildlife". However, only the first instance is highlighted. This
occurs with unordered SpanNearQuery as well. Test below replicates. Affects
both the current 6.x line and master.
Test that fits within TestUnifiedHighlighterMTQ:
{code}
public void testOrderedSpanNearQueryWithDupeTerms() throws Exception {
RandomIndexWriter iw = new RandomIndexWriter(random(), dir, indexAnalyzer);
Document doc = new Document();
doc.add(new Field("body", "Something for protecting wildlife feed in a feed
thing.", fieldType));
doc.add(newTextField("id", "id", Field.Store.YES));
iw.addDocument(doc);
IndexReader ir = iw.getReader();
iw.close();
IndexSearcher searcher = newSearcher(ir);
UnifiedHighlighter highlighter = new UnifiedHighlighter(searcher,
indexAnalyzer);
int docID = searcher.search(new TermQuery(new Term("id", "id")),
1).scoreDocs[0].doc;
SpanTermQuery termOne = new SpanTermQuery(new Term("body", "wildlife"));
SpanTermQuery termTwo = new SpanTermQuery(new Term("body", "feed"));
SpanNearQuery topQuery = new SpanNearQuery.Builder("body", true)
.setSlop(9)
.addClause(termOne)
.addClause(termTwo)
.build();
int[] docIds = new int[] {docID};
String snippets[] = highlighter.highlightFields(new String[] {"body"},
topQuery, docIds, new int[] {2}).get("body");
assertEquals(1, snippets.length);
assertEquals("Something for protecting <b>wildlife</b> <b>feed</b> in a
<b>feed</b> thing.", snippets[0]);
ir.close();
}
{code}
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