/*
* 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 StandardAnalyzer = Lucene.Net.Analysis.Standard.StandardAnalyzer;
using Document = Lucene.Net.Documents.Document;
using Field = Lucene.Net.Documents.Field;
using IndexWriter = Lucene.Net.Index.IndexWriter;
using Term = Lucene.Net.Index.Term;
using Directory = Lucene.Net.Store.Directory;
using RAMDirectory = Lucene.Net.Store.RAMDirectory;
using Lucene.Net.Search;
using LuceneTestCase = Lucene.Net.Util.LuceneTestCase;
namespace Lucene.Net.Search.Spans
{
/// ****************************************************************************
/// Tests the span query bug in Lucene. It demonstrates that SpanTermQuerys don't
/// work correctly in a BooleanQuery.
///
///
[TestFixture]
public class TestSpansAdvanced:LuceneTestCase
{
// location to the index
protected internal Directory mDirectory;
protected internal IndexSearcher searcher;
// field names in the index
private const System.String FIELD_ID = "ID";
protected internal const System.String FIELD_TEXT = "TEXT";
/// Initializes the tests by adding 4 identical documents to the index.
[SetUp]
public override void SetUp()
{
base.SetUp();
base.SetUp();
// create test index
mDirectory = new RAMDirectory();
IndexWriter writer = new IndexWriter(mDirectory, new StandardAnalyzer(), true, IndexWriter.MaxFieldLength.LIMITED);
addDocument(writer, "1", "I think it should work.");
addDocument(writer, "2", "I think it should work.");
addDocument(writer, "3", "I think it should work.");
addDocument(writer, "4", "I think it should work.");
writer.Close();
searcher = new IndexSearcher(mDirectory);
}
[TearDown]
public override void TearDown()
{
base.TearDown();
searcher.Close();
mDirectory.Close();
mDirectory = null;
}
/// Adds the document to the index.
///
///
/// the Lucene index writer
///
/// the unique id of the document
///
/// the text of the document
///
/// IOException
protected internal virtual void addDocument(IndexWriter writer, System.String id, System.String text)
{
Document document = new Document();
document.Add(new Field(FIELD_ID, id, Field.Store.YES, Field.Index.NOT_ANALYZED));
document.Add(new Field(FIELD_TEXT, text, Field.Store.YES, Field.Index.ANALYZED));
writer.AddDocument(document);
}
/// Tests two span queries.
///
///
/// IOException
[Test]
public virtual void TestBooleanQueryWithSpanQueries()
{
doTestBooleanQueryWithSpanQueries(searcher, 0.3884282f);
}
/// Tests two span queries.
///
///
/// IOException
protected internal virtual void doTestBooleanQueryWithSpanQueries(IndexSearcher s, float expectedScore)
{
Query spanQuery = new SpanTermQuery(new Term(FIELD_TEXT, "work"));
BooleanQuery query = new BooleanQuery();
query.Add(spanQuery, BooleanClause.Occur.MUST);
query.Add(spanQuery, BooleanClause.Occur.MUST);
System.String[] expectedIds = new System.String[]{"1", "2", "3", "4"};
float[] expectedScores = new float[]{expectedScore, expectedScore, expectedScore, expectedScore};
assertHits(s, query, "two span queries", expectedIds, expectedScores);
}
/// Checks to see if the hits are what we expected.
///
///
/// the query to execute
///
/// the description of the search
///
/// the expected document ids of the hits
///
/// the expected scores of the hits
///
///
/// IOException
protected internal static void assertHits(Searcher s, Query query, System.String description, System.String[] expectedIds, float[] expectedScores)
{
QueryUtils.Check(query, s);
float tolerance = 1e-5f;
// Hits hits = searcher.search(query);
// hits normalizes and throws things off if one score is greater than 1.0
TopDocs topdocs = s.Search(query, null, 10000);
/*****
// display the hits
System.out.println(hits.length() + " hits for search: \"" + description + '\"');
for (int i = 0; i < hits.length(); i++) {
System.out.println(" " + FIELD_ID + ':' + hits.doc(i).get(FIELD_ID) + " (score:" + hits.score(i) + ')');
}
*****/
// did we get the hits we expected
Assert.AreEqual(expectedIds.Length, topdocs.totalHits);
for (int i = 0; i < topdocs.totalHits; i++)
{
//System.out.println(i + " exp: " + expectedIds[i]);
//System.out.println(i + " field: " + hits.doc(i).get(FIELD_ID));
int id = topdocs.scoreDocs[i].doc;
float score = topdocs.scoreDocs[i].score;
Document doc = s.Doc(id);
Assert.AreEqual(expectedIds[i], doc.Get(FIELD_ID));
bool scoreEq = System.Math.Abs(expectedScores[i] - score) < tolerance;
if (!scoreEq)
{
System.Console.Out.WriteLine(i + " warning, expected score: " + expectedScores[i] + ", actual " + score);
System.Console.Out.WriteLine(s.Explain(query, id));
}
Assert.AreEqual(expectedScores[i], score, tolerance);
Assert.AreEqual(s.Explain(query, id).GetValue(), score, tolerance);
}
}
}
}