[ http://issues.apache.org/jira/browse/LUCENE-556?page=all ]
Doug Cutting updated LUCENE-556:
--------------------------------
Fix Version: 2.0
> MatchAllDocsQuery, MultiSearcher and a custom HitCollector throwing exception
> -----------------------------------------------------------------------------
>
> 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
> Fix For: 2.0
>
> 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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