[LUCENE-556] MatchAllDocsQuery, MultiSearcher and a custom HitCollector throwing exception

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 1.9
• Fix Version/s: 2.0.0
• Component/s: core/search

Environment

xp sp2, jdk1.5

• Assignee: Yonik Seeley
• Reporter: jmwap
• Created: 26/Apr/06 22:36
• Updated: 15/Sep/24 22:24
• Resolved: 20/May/06 03:29

Description

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);