MatchAllDocsQuery, MultiSearcher and a custom HitCollector throwing exception
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Key: LUCENE-556
URL: http://issues.apache.org/jira/browse/LUCENE-556
Project: Lucene - Java
Type: Bug
Components: Search
Versions: 1.9
Environment: xp sp2, jdk1.5
Reporter: jm
Priority: Minor
I have encountered an issue with lucene1.9.1. It involves MatchAllDocsQuery,
MultiSearcher and a custom HitCollector. The following code throws
java.lang.UnsupportedOperationException.
If I remove the MatchAllDocsQuery condition (comment whole //1 block), or if I
dont use the custom hitcollector (ms.search(mbq); instead of ms.search(mbq,
allcoll);) the exception goes away. By stepping into the source I can see it
seems due to MatchAllDocsQuery no implementing extractTerms()....
Searcher searcher = new
IndexSearcher("c:\\projects\\mig\\runtime\\index\\01Aug16\\");
Searchable[] indexes = new IndexSearcher[1];
indexes[0] = searcher;
MultiSearcher ms = new MultiSearcher(indexes);
AllCollector allcoll = new AllCollector(ms);
BooleanQuery mbq = new BooleanQuery();
mbq.add(new TermQuery(new Term("body", "value1")),
BooleanClause.Occur.MUST_NOT);
// 1
MatchAllDocsQuery alld = new MatchAllDocsQuery();
mbq.add(alld, BooleanClause.Occur.MUST);
//
System.out.println("Query: " + mbq.toString());
// 2
ms.search(mbq, allcoll);
//ms.search(mbq);
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