public virtual void TestNegativeQueryBoost()
{
Query q = new TermQuery(new Term("foo", "bar"));
q.Boost = -42f;
Assert.AreEqual(-42f, q.Boost, 0.0f);
Directory directory = newDirectory();
try
{
Analyzer analyzer = new MockAnalyzer(random());
IndexWriterConfig conf = newIndexWriterConfig(TEST_VERSION_CURRENT, analyzer);
IndexWriter writer = new IndexWriter(directory, conf);
try
{
Document d = new Document();
d.add(newTextField("foo", "bar", Field.Store.YES));
writer.addDocument(d);
}
finally
{
writer.close();
}
IndexReader reader = DirectoryReader.open(directory);
try
{
IndexSearcher searcher = newSearcher(reader);
ScoreDoc[] hits = searcher.search(q, null, 1000).scoreDocs;
Assert.AreEqual(1, hits.Length);
Assert.IsTrue("score is not negative: " + hits[0].score, hits[0].score < 0);
Explanation explain = searcher.explain(q, hits[0].doc);
Assert.AreEqual("score doesn't match explanation", hits[0].score, explain.Value, 0.001f);
Assert.IsTrue("explain doesn't think doc is a match", explain.Match);
}
finally
{
reader.close();
}
}
finally
{
directory.close();
}
}
private void DoTest(Random random, PrintWriter @out, bool useCompoundFiles, int MAX_DOCS)
{
Directory directory = newDirectory();
Analyzer analyzer = new MockAnalyzer(random);
IndexWriterConfig conf = newIndexWriterConfig(TEST_VERSION_CURRENT, analyzer);
MergePolicy mp = conf.MergePolicy;
mp.NoCFSRatio = useCompoundFiles ? 1.0 : 0.0;
IndexWriter writer = new IndexWriter(directory, conf);
if (VERBOSE)
{
Console.WriteLine("TEST: now build index MAX_DOCS=" + MAX_DOCS);
}
for (int j = 0; j < MAX_DOCS; j++)
{
Document d = new Document();
d.Add(newTextField(PRIORITY_FIELD, HIGH_PRIORITY, Field.Store.YES));
d.Add(newTextField(ID_FIELD, Convert.ToString(j), Field.Store.YES));
writer.addDocument(d);
}
writer.Dispose();
// try a search without OR
IndexReader reader = DirectoryReader.Open(directory);
IndexSearcher searcher = newSearcher(reader);
Query query = new TermQuery(new Term(PRIORITY_FIELD, HIGH_PRIORITY));
@out.println("Query: " + query.ToString(PRIORITY_FIELD));
if (VERBOSE)
{
Console.WriteLine("TEST: search query=" + query);
}
Sort sort = new Sort(SortField.FIELD_SCORE, new SortField(ID_FIELD, SortField.Type.INT));
ScoreDoc[] hits = searcher.Search(query, null, MAX_DOCS, sort).scoreDocs;
PrintHits(@out, hits, searcher);
CheckHits(hits, MAX_DOCS, searcher);
// try a new search with OR
searcher = newSearcher(reader);
hits = null;
BooleanQuery booleanQuery = new BooleanQuery();
booleanQuery.Add(new TermQuery(new Term(PRIORITY_FIELD, HIGH_PRIORITY)), BooleanClause.Occur_e.SHOULD);
booleanQuery.Add(new TermQuery(new Term(PRIORITY_FIELD, MED_PRIORITY)), BooleanClause.Occur_e.SHOULD);
@out.println("Query: " + booleanQuery.ToString(PRIORITY_FIELD));
hits = searcher.search(booleanQuery, null, MAX_DOCS, sort).scoreDocs;
PrintHits(@out, hits, searcher);
CheckHits(hits, MAX_DOCS, searcher);
reader.Close();
directory.Close();
}
private void DoTestSearch(Random random, PrintWriter @out, bool useCompoundFile)
{
Directory directory = newDirectory();
Analyzer analyzer = new MockAnalyzer(random);
IndexWriterConfig conf = newIndexWriterConfig(TEST_VERSION_CURRENT, analyzer);
MergePolicy mp = conf.MergePolicy;
mp.NoCFSRatio = useCompoundFile ? 1.0 : 0.0;
IndexWriter writer = new IndexWriter(directory, conf);
string[] docs = new string[] {"a b c d e", "a b c d e a b c d e", "a b c d e f g h i j", "a c e", "e c a", "a c e a c e", "a c e a b c"};
for (int j = 0; j < docs.Length; j++)
{
Document d = new Document();
d.add(newTextField("contents", docs[j], Field.Store.YES));
d.add(newStringField("id", "" + j, Field.Store.NO));
writer.addDocument(d);
}
writer.close();
IndexReader reader = DirectoryReader.open(directory);
IndexSearcher searcher = newSearcher(reader);
ScoreDoc[] hits = null;
Sort sort = new Sort(SortField.FIELD_SCORE, new SortField("id", SortField.Type.INT));
foreach (Query query in BuildQueries())
{
@out.println("Query: " + query.ToString("contents"));
if (VERBOSE)
{
Console.WriteLine("TEST: query=" + query);
}
hits = searcher.search(query, null, 1000, sort).scoreDocs;
@out.println(hits.Length + " total results");
for (int i = 0 ; i < hits.Length && i < 10; i++)
{
Document d = searcher.doc(hits[i].doc);
@out.println(i + " " + hits[i].score + " " + d.get("contents"));
}
}
reader.close();
directory.close();
}