Hi all.
In this test, I wrap a query in a FilteredQuery. Then I do a query
which returns one doc and pass that doc ID to get an explanation.
The resulting Explanation.isMatch() returns false, which seems odd,
considering it was obviously a match.
Is this a bug? Code follows.
TX
public class TestFilteredSearcherWtf
{
private Directory directory;
private IndexReader reader;
private IndexSearcher searcher;
private Query query = new TermQuery(new Term("value", "1"));
private Filter filter = not(
new QueryWrapperFilter(new TermsFilter(new Term("hidden", "1"))));
@Test
public void testSearch() throws Exception
{
TopDocs topDocs = searcher.search(query, filter, 10);
int doc = topDocs.scoreDocs[0].doc; // <- got the doc here
Explanation explanation = searcher.explain(new
FilteredQuery(query, filter), doc);
assertThat(explanation.isMatch(), is(true)); // <- so it
should return true, right?
}
public static Filter not(Filter filter)
{
BooleanQuery booleanQuery = new BooleanQuery();
booleanQuery.add(new MatchAllDocsQuery(), BooleanClause.Occur.SHOULD);
booleanQuery.add(filter, BooleanClause.Occur.MUST_NOT);
return new QueryWrapperFilter(booleanQuery);
}
@Before
public void setUp() throws Exception
{
directory = new RAMDirectory();
try (IndexWriter writer = new IndexWriter(directory, new
IndexWriterConfig(new WhitespaceAnalyzer())))
{
Document doc1 = new Document();
doc1.add(new StringField("hidden", "1", Field.Store.YES));
doc1.add(new StringField("value", "1", Field.Store.YES));
writer.addDocument(doc1);
Document doc2 = new Document();
doc2.add(new StringField("value", "1", Field.Store.YES));
writer.addDocument(doc2);
Document doc3 = new Document();
doc3.add(new StringField("hidden", "1", Field.Store.YES));
doc3.add(new StringField("value", "2", Field.Store.YES));
writer.addDocument(doc3);
Document doc4 = new Document();
doc4.add(new StringField("value", "2", Field.Store.YES));
writer.addDocument(doc4);
}
reader = DirectoryReader.open(directory);
searcher = new IndexSearcher(reader);
}
@After
public void tearDown() throws Exception
{
if (reader != null)
{
reader.close();
}
if (directory != null)
{
directory.close();
}
}
}
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