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LUCENE-3578: don't allow string field DocValue sort with SlowMultiReaderWrapper 

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1202394 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Michael McCandless 2011-11-15 19:36:27 +00:00
parent d4c8f29e23
commit f865f7935e
1 changed files with 17 additions and 1 deletions
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18
lucene/src/test/org/apache/lucene/search/TestSort.java
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@ -1216,13 +1216,29 @@ public class TestSort extends LuceneTestCase {
assertMatches( null, searcher, query, sort, expectedResult );
}
private static boolean hasSlowMultiReaderWrapper(IndexReader r) {
if (r instanceof SlowMultiReaderWrapper) {
return true;
} else {
IndexReader[] subReaders = r.getSequentialSubReaders();
if (subReaders != null) {
for (IndexReader subReader : subReaders) {
if (hasSlowMultiReaderWrapper(subReader)) {
return true;
}
}
}
}
return false;
}
// make sure the documents returned by the search match the expected list
private void assertMatches(String msg, IndexSearcher searcher, Query query, Sort sort,
String expectedResult) throws IOException {
for(SortField sortField : sort.getSort()) {
if (sortField.getUseIndexValues() && sortField.getType() == SortField.Type.STRING) {
if (searcher.getIndexReader() instanceof SlowMultiReaderWrapper) {
if (hasSlowMultiReaderWrapper(searcher.getIndexReader())) {
// Cannot use STRING DocValues sort with SlowMultiReaderWrapper
return;
}