/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
using System;
using NUnit.Framework;
using CorruptIndexException = Lucene.Net.Index.CorruptIndexException;
using IndexReader = Lucene.Net.Index.IndexReader;
using IndexSearcher = Lucene.Net.Search.IndexSearcher;
using Query = Lucene.Net.Search.Query;
using QueryUtils = Lucene.Net.Search.QueryUtils;
using ScoreDoc = Lucene.Net.Search.ScoreDoc;
using TopDocs = Lucene.Net.Search.TopDocs;
namespace Lucene.Net.Search.Function
{
/// Test search based on OrdFieldSource and ReverseOrdFieldSource.
///
/// Tests here create an index with a few documents, each having
/// an indexed "id" field.
/// The ord values of this field are later used for scoring.
///
/// The order tests use Hits to verify that docs are ordered as expected.
///
/// The exact score tests use TopDocs top to verify the exact score.
///
[TestFixture]
public class TestOrdValues:FunctionTestSetup
{
/* @override constructor */
public TestOrdValues(System.String name):base(name, false)
{
}
public TestOrdValues()
: base()
{
}
/// Test OrdFieldSource
[Test]
public virtual void TestOrdFieldRank()
{
DoTestRank(ID_FIELD, true);
}
/// Test ReverseOrdFieldSource
[Test]
public virtual void TestReverseOrdFieldRank()
{
DoTestRank(ID_FIELD, false);
}
// Test that queries based on reverse/ordFieldScore scores correctly
private void DoTestRank(System.String field, bool inOrder)
{
IndexSearcher s = new IndexSearcher(dir, true);
ValueSource vs;
if (inOrder)
{
vs = new OrdFieldSource(field);
}
else
{
vs = new ReverseOrdFieldSource(field);
}
Query q = new ValueSourceQuery(vs);
Log("test: " + q);
QueryUtils.Check(q, s);
ScoreDoc[] h = s.Search(q, null, 1000).ScoreDocs;
Assert.AreEqual(N_DOCS, h.Length, "All docs should be matched!");
System.String prevID = inOrder?"IE":"IC"; // smaller than all ids of docs in this test ("ID0001", etc.)
for (int i = 0; i < h.Length; i++)
{
System.String resID = s.Doc(h[i].Doc).Get(ID_FIELD);
Log(i + ". score=" + h[i].Score + " - " + resID);
Log(s.Explain(q, h[i].Doc));
if (inOrder)
{
Assert.IsTrue(String.CompareOrdinal(resID, prevID) < 0, "res id " + resID + " should be < prev res id " + prevID);
}
else
{
Assert.IsTrue(String.CompareOrdinal(resID, prevID) > 0, "res id " + resID + " should be > prev res id " + prevID);
}
prevID = resID;
}
}
/// Test exact score for OrdFieldSource
[Test]
public virtual void TestOrdFieldExactScore()
{
DoTestExactScore(ID_FIELD, true);
}
/// Test exact score for ReverseOrdFieldSource
[Test]
public virtual void TestReverseOrdFieldExactScore()
{
DoTestExactScore(ID_FIELD, false);
}
// Test that queries based on reverse/ordFieldScore returns docs with expected score.
private void DoTestExactScore(System.String field, bool inOrder)
{
IndexSearcher s = new IndexSearcher(dir, true);
ValueSource vs;
if (inOrder)
{
vs = new OrdFieldSource(field);
}
else
{
vs = new ReverseOrdFieldSource(field);
}
Query q = new ValueSourceQuery(vs);
TopDocs td = s.Search(q, null, 1000);
Assert.AreEqual(N_DOCS, td.TotalHits, "All docs should be matched!");
ScoreDoc[] sd = td.ScoreDocs;
for (int i = 0; i < sd.Length; i++)
{
float score = sd[i].Score;
System.String id = s.IndexReader.Document(sd[i].Doc).Get(ID_FIELD);
Log("-------- " + i + ". Explain doc " + id);
Log(s.Explain(q, sd[i].Doc));
float expectedScore = N_DOCS - i;
Assert.AreEqual(expectedScore, score, TEST_SCORE_TOLERANCE_DELTA, "score of result " + i + " shuould be " + expectedScore + " != " + score);
System.String expectedId = inOrder?Id2String(N_DOCS - i):Id2String(i + 1); // reverse ==> smaller values first
Assert.IsTrue(expectedId.Equals(id), "id of result " + i + " shuould be " + expectedId + " != " + score);
}
}
/// Test caching OrdFieldSource
[Test]
public virtual void TestCachingOrd()
{
DoTestCaching(ID_FIELD, true);
}
/// Test caching for ReverseOrdFieldSource
[Test]
public virtual void TesCachingReverseOrd()
{
DoTestCaching(ID_FIELD, false);
}
// Test that values loaded for FieldScoreQuery are cached properly and consumes the proper RAM resources.
private void DoTestCaching(System.String field, bool inOrder)
{
IndexSearcher s = new IndexSearcher(dir, true);
System.Object innerArray = null;
bool warned = false; // print warning once
for (int i = 0; i < 10; i++)
{
ValueSource vs;
if (inOrder)
{
vs = new OrdFieldSource(field);
}
else
{
vs = new ReverseOrdFieldSource(field);
}
ValueSourceQuery q = new ValueSourceQuery(vs);
ScoreDoc[] h = s.Search(q, null, 1000).ScoreDocs;
try
{
Assert.AreEqual(N_DOCS, h.Length, "All docs should be matched!");
IndexReader[] readers = s.IndexReader.GetSequentialSubReaders();
for (int j = 0; j < readers.Length; j++)
{
IndexReader reader = readers[j];
if (i == 0)
{
innerArray = q.valSrc.GetValues(reader).InnerArray;
}
else
{
Log(i + ". compare: " + innerArray + " to " + q.valSrc.GetValues(reader).InnerArray);
Assert.AreSame(innerArray, q.valSrc.GetValues(reader).InnerArray, "field values should be cached and reused!");
}
}
}
catch (System.NotSupportedException)
{
if (!warned)
{
System.Console.Error.WriteLine("WARNING: " + TestName() + " cannot fully test values of " + q);
warned = true;
}
}
}
ValueSource vs2;
ValueSourceQuery q2;
ScoreDoc[] h2;
// verify that different values are loaded for a different field
System.String field2 = INT_FIELD;
Assert.IsFalse(field.Equals(field2)); // otherwise this test is meaningless.
if (inOrder)
{
vs2 = new OrdFieldSource(field2);
}
else
{
vs2 = new ReverseOrdFieldSource(field2);
}
q2 = new ValueSourceQuery(vs2);
h2 = s.Search(q2, null, 1000).ScoreDocs;
Assert.AreEqual(N_DOCS, h2.Length, "All docs should be matched!");
IndexReader[] readers2 = s.IndexReader.GetSequentialSubReaders();
for (int j = 0; j < readers2.Length; j++)
{
IndexReader reader = readers2[j];
try
{
Log("compare (should differ): " + innerArray + " to " + q2.valSrc.GetValues(reader).InnerArray);
Assert.AreNotSame(innerArray, q2.valSrc.GetValues(reader).InnerArray, "different values shuold be loaded for a different field!");
}
catch (System.NotSupportedException)
{
if (!warned)
{
System.Console.Error.WriteLine("WARNING: " + TestName() + " cannot fully test values of " + q2);
warned = true;
}
}
}
// verify new values are reloaded (not reused) for a new reader
s = new IndexSearcher(dir, true);
if (inOrder)
{
vs2 = new OrdFieldSource(field);
}
else
{
vs2 = new ReverseOrdFieldSource(field);
}
q2 = new ValueSourceQuery(vs2);
h2 = s.Search(q2, null, 1000).ScoreDocs;
Assert.AreEqual(N_DOCS, h2.Length, "All docs should be matched!");
readers2 = s.IndexReader.GetSequentialSubReaders();
for (int j = 0; j < readers2.Length; j++)
{
IndexReader reader = readers2[j];
try
{
Log("compare (should differ): " + innerArray + " to " + q2.valSrc.GetValues(reader).InnerArray);
Assert.AreNotSame(innerArray, q2.valSrc.GetValues(reader).InnerArray, "cached field values should not be reused if reader as changed!");
}
catch (System.NotSupportedException)
{
if (!warned)
{
System.Console.Error.WriteLine("WARNING: " + TestName() + " cannot fully test values of " + q2);
warned = true;
}
}
}
}
private System.String TestName()
{
return Lucene.Net.TestCase.GetFullName();
}
}
}