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LUCENE-4410: fix test bug - return null DocIdSet if reader has no docs for the term 

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1388404 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Simon Willnauer 2012-09-21 10:32:50 +00:00
parent bcb88e741e
commit 8cb409e692
1 changed files with 53 additions and 43 deletions
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42
lucene/core/src/test/org/apache/lucene/search/TestFilteredQuery.java
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@ -383,12 +383,13 @@ public class TestFilteredQuery extends LuceneTestCase {
}
/*
* Test if the QueryFirst strategy calls the bits only if
* the document has been matched by the query and not otherwise
* Test if the QueryFirst strategy calls the bits only if the document has
* been matched by the query and not otherwise
*/
public void testQueryFirstFilterStrategy() throws IOException {
Directory directory = newDirectory();
RandomIndexWriter writer = new RandomIndexWriter (random(), directory, newIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(random())));
RandomIndexWriter writer = new RandomIndexWriter(random(), directory,
newIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(random())));
int numDocs = atLeast(50);
int totalDocsWithZero = 0;
for (int i = 0; i < numDocs; i++) {
@ -397,26 +398,28 @@ public class TestFilteredQuery extends LuceneTestCase {
if (num == 0) {
totalDocsWithZero++;
}
doc.add (newTextField("field", ""+num, Field.Store.YES));
writer.addDocument (doc);
doc.add(newTextField("field", "" + num, Field.Store.YES));
writer.addDocument(doc);
}
IndexReader reader = writer.getReader();
writer.close ();
writer.close();
IndexSearcher searcher = newSearcher(reader);
Query query = new FilteredQuery(new TermQuery(new Term("field", "0")), new Filter() {
Query query = new FilteredQuery(new TermQuery(new Term("field", "0")),
new Filter() {
@Override
public DocIdSet getDocIdSet(AtomicReaderContext context, Bits acceptDocs)
throws IOException {
public DocIdSet getDocIdSet(AtomicReaderContext context,
Bits acceptDocs) throws IOException {
final boolean nullBitset = random().nextInt(10) == 5;
final AtomicReader reader = context.reader();
DocsEnum termDocsEnum = reader.termDocsEnum(new Term("field", "0"));
final BitSet bitSet = new BitSet(reader.maxDoc());
if (termDocsEnum != null) {
int d;
while((d = termDocsEnum.nextDoc()) != DocsEnum.NO_MORE_DOCS) {
bitSet.set(d, true);
if (termDocsEnum == null) {
return null; // no docs -- return null
}
final BitSet bitSet = new BitSet(reader.maxDoc());
int d;
while ((d = termDocsEnum.nextDoc()) != DocsEnum.NO_MORE_DOCS) {
bitSet.set(d, true);
}
return new DocIdSet() {
@ -429,7 +432,8 @@ public class TestFilteredQuery extends LuceneTestCase {
@Override
public boolean get(int index) {
assertTrue("filter was called for a non-matching doc", bitSet.get(index));
assertTrue("filter was called for a non-matching doc",
bitSet.get(index));
return bitSet.get(index);
}
@ -440,9 +444,12 @@ public class TestFilteredQuery extends LuceneTestCase {
};
}
@Override
public DocIdSetIterator iterator() throws IOException {
assertTrue("iterator should not be called if bitset is present", nullBitset);
assertTrue(
"iterator should not be called if bitset is present",
nullBitset);
return reader.termDocsEnum(new Term("field", "0"));
}
@ -491,6 +498,9 @@ public class TestFilteredQuery extends LuceneTestCase {
@Override
public DocIdSetIterator iterator() throws IOException {
final DocsEnum termDocsEnum = context.reader().termDocsEnum(new Term("field", "0"));
if (termDocsEnum == null) {
return null;
}
return new DocIdSetIterator() {
boolean nextCalled;
boolean advanceCalled;