package org.apache.lucene.search;
/*
* 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.
*/
import java.util.Random;
import org.apache.lucene.analysis.MockAnalyzer;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.index.DirectoryReader;
import org.apache.lucene.index.RandomIndexWriter;
import org.apache.lucene.index.Term;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.search.similarities.DefaultSimilarity;
import org.apache.lucene.search.similarities.Similarity;
import org.apache.lucene.store.Directory;
import org.apache.lucene.store.IOContext;
import org.apache.lucene.store.MockDirectoryWrapper;
import org.apache.lucene.store.RAMDirectory;
import org.apache.lucene.util.LuceneTestCase;
import org.apache.lucene.util.TestUtil;
import org.apache.lucene.util.TestUtil;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;
/** Test BooleanQuery2 against BooleanQuery by overriding the standard query parser.
* This also tests the scoring order of BooleanQuery.
*/
public class TestBoolean2 extends LuceneTestCase {
private static IndexSearcher searcher;
private static IndexSearcher bigSearcher;
private static IndexReader reader;
private static IndexReader littleReader;
private static int NUM_EXTRA_DOCS = 6000;
public static final String field = "field";
private static Directory directory;
private static Directory dir2;
private static int mulFactor;
@BeforeClass
public static void beforeClass() throws Exception {
directory = newDirectory();
RandomIndexWriter writer= new RandomIndexWriter(random(), directory, newIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(random())).setMergePolicy(newLogMergePolicy()));
for (int i = 0; i < docFields.length; i++) {
Document doc = new Document();
doc.add(newTextField(field, docFields[i], Field.Store.NO));
writer.addDocument(doc);
}
writer.close();
littleReader = DirectoryReader.open(directory);
searcher = newSearcher(littleReader);
// this is intentionally using the baseline sim, because it compares against bigSearcher (which uses a random one)
searcher.setSimilarity(new DefaultSimilarity());
// Make big index
dir2 = new MockDirectoryWrapper(random(), new RAMDirectory(directory, IOContext.DEFAULT));
// First multiply small test index:
mulFactor = 1;
int docCount = 0;
if (VERBOSE) {
System.out.println("\nTEST: now copy index...");
}
do {
if (VERBOSE) {
System.out.println("\nTEST: cycle...");
}
final Directory copy = new MockDirectoryWrapper(random(), new RAMDirectory(dir2, IOContext.DEFAULT));
RandomIndexWriter w = new RandomIndexWriter(random(), dir2);
w.addIndexes(copy);
docCount = w.maxDoc();
w.close();
mulFactor *= 2;
} while(docCount < 3000);
RandomIndexWriter w = new RandomIndexWriter(random(), dir2,
newIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(random()))
.setMaxBufferedDocs(TestUtil.nextInt(random(), 50, 1000)));
Document doc = new Document();
doc.add(newTextField("field2", "xxx", Field.Store.NO));
for(int i=0;i<NUM_EXTRA_DOCS/2;i++) {
w.addDocument(doc);
}
doc = new Document();
doc.add(newTextField("field2", "big bad bug", Field.Store.NO));
for(int i=0;i<NUM_EXTRA_DOCS/2;i++) {
w.addDocument(doc);
}
reader = w.getReader();
bigSearcher = newSearcher(reader);
w.close();
}
@AfterClass
public static void afterClass() throws Exception {
reader.close();
littleReader.close();
dir2.close();
directory.close();
searcher = null;
reader = null;
littleReader = null;
dir2 = null;
directory = null;
bigSearcher = null;
}
private static String[] docFields = {
"w1 w2 w3 w4 w5",
"w1 w3 w2 w3",
"w1 xx w2 yy w3",
"w1 w3 xx w2 yy w3"
};
public void queriesTest(Query query, int[] expDocNrs) throws Exception {
TopScoreDocCollector collector = TopScoreDocCollector.create(1000, false);
searcher.search(query, null, collector);
ScoreDoc[] hits1 = collector.topDocs().scoreDocs;
collector = TopScoreDocCollector.create(1000, true);
searcher.search(query, null, collector);
ScoreDoc[] hits2 = collector.topDocs().scoreDocs;
assertEquals(mulFactor * collector.totalHits,
bigSearcher.search(query, 1).totalHits);
CheckHits.checkHitsQuery(query, hits1, hits2, expDocNrs);
}
@Test
public void testQueries01() throws Exception {
BooleanQuery query = new BooleanQuery();
query.add(new TermQuery(new Term(field, "w3")), BooleanClause.Occur.MUST);
query.add(new TermQuery(new Term(field, "xx")), BooleanClause.Occur.MUST);
int[] expDocNrs = {2,3};
queriesTest(query, expDocNrs);
}
@Test
public void testQueries02() throws Exception {
BooleanQuery query = new BooleanQuery();
query.add(new TermQuery(new Term(field, "w3")), BooleanClause.Occur.MUST);
query.add(new TermQuery(new Term(field, "xx")), BooleanClause.Occur.SHOULD);
int[] expDocNrs = {2,3,1,0};
queriesTest(query, expDocNrs);
}
@Test
public void testQueries03() throws Exception {
BooleanQuery query = new BooleanQuery();
query.add(new TermQuery(new Term(field, "w3")), BooleanClause.Occur.SHOULD);
query.add(new TermQuery(new Term(field, "xx")), BooleanClause.Occur.SHOULD);
int[] expDocNrs = {2,3,1,0};
queriesTest(query, expDocNrs);
}
@Test
public void testQueries04() throws Exception {
BooleanQuery query = new BooleanQuery();
query.add(new TermQuery(new Term(field, "w3")), BooleanClause.Occur.SHOULD);
query.add(new TermQuery(new Term(field, "xx")), BooleanClause.Occur.MUST_NOT);
int[] expDocNrs = {1,0};
queriesTest(query, expDocNrs);
}
@Test
public void testQueries05() throws Exception {
BooleanQuery query = new BooleanQuery();
query.add(new TermQuery(new Term(field, "w3")), BooleanClause.Occur.MUST);
query.add(new TermQuery(new Term(field, "xx")), BooleanClause.Occur.MUST_NOT);
int[] expDocNrs = {1,0};
queriesTest(query, expDocNrs);
}
@Test
public void testQueries06() throws Exception {
BooleanQuery query = new BooleanQuery();
query.add(new TermQuery(new Term(field, "w3")), BooleanClause.Occur.MUST);
query.add(new TermQuery(new Term(field, "xx")), BooleanClause.Occur.MUST_NOT);
query.add(new TermQuery(new Term(field, "w5")), BooleanClause.Occur.MUST_NOT);
int[] expDocNrs = {1};
queriesTest(query, expDocNrs);
}
@Test
public void testQueries07() throws Exception {
BooleanQuery query = new BooleanQuery();
query.add(new TermQuery(new Term(field, "w3")), BooleanClause.Occur.MUST_NOT);
query.add(new TermQuery(new Term(field, "xx")), BooleanClause.Occur.MUST_NOT);
query.add(new TermQuery(new Term(field, "w5")), BooleanClause.Occur.MUST_NOT);
int[] expDocNrs = {};
queriesTest(query, expDocNrs);
}
@Test
public void testQueries08() throws Exception {
BooleanQuery query = new BooleanQuery();
query.add(new TermQuery(new Term(field, "w3")), BooleanClause.Occur.MUST);
query.add(new TermQuery(new Term(field, "xx")), BooleanClause.Occur.SHOULD);
query.add(new TermQuery(new Term(field, "w5")), BooleanClause.Occur.MUST_NOT);
int[] expDocNrs = {2,3,1};
queriesTest(query, expDocNrs);
}
@Test
public void testQueries09() throws Exception {
BooleanQuery query = new BooleanQuery();
query.add(new TermQuery(new Term(field, "w3")), BooleanClause.Occur.MUST);
query.add(new TermQuery(new Term(field, "xx")), BooleanClause.Occur.MUST);
query.add(new TermQuery(new Term(field, "w2")), BooleanClause.Occur.MUST);
query.add(new TermQuery(new Term(field, "zz")), BooleanClause.Occur.SHOULD);
int[] expDocNrs = {2, 3};
queriesTest(query, expDocNrs);
}
@Test
public void testQueries10() throws Exception {
BooleanQuery query = new BooleanQuery();
query.add(new TermQuery(new Term(field, "w3")), BooleanClause.Occur.MUST);
query.add(new TermQuery(new Term(field, "xx")), BooleanClause.Occur.MUST);
query.add(new TermQuery(new Term(field, "w2")), BooleanClause.Occur.MUST);
query.add(new TermQuery(new Term(field, "zz")), BooleanClause.Occur.SHOULD);
int[] expDocNrs = {2, 3};
Similarity oldSimilarity = searcher.getSimilarity();
try {
searcher.setSimilarity(new DefaultSimilarity(){
@Override
public float coord(int overlap, int maxOverlap) {
return overlap / ((float)maxOverlap - 1);
}
});
queriesTest(query, expDocNrs);
} finally {
searcher.setSimilarity(oldSimilarity);
}
}
@Test
public void testRandomQueries() throws Exception {
String[] vals = {"w1","w2","w3","w4","w5","xx","yy","zzz"};
int tot=0;
BooleanQuery q1 = null;
try {
// increase number of iterations for more complete testing
int num = atLeast(20);
for (int i=0; i<num; i++) {
int level = random().nextInt(3);
q1 = randBoolQuery(new Random(random().nextLong()), random().nextBoolean(), level, field, vals, null);
// Can't sort by relevance since floating point numbers may not quite
// match up.
Sort sort = Sort.INDEXORDER;
QueryUtils.check(random(), q1,searcher); // baseline sim
try {
// a little hackish, QueryUtils.check is too costly to do on bigSearcher in this loop.
searcher.setSimilarity(bigSearcher.getSimilarity()); // random sim
QueryUtils.check(random(), q1, searcher);
} finally {
searcher.setSimilarity(new DefaultSimilarity()); // restore
}
TopFieldCollector collector = TopFieldCollector.create(sort, 1000,
false, true, true, true);
searcher.search(q1, null, collector);
ScoreDoc[] hits1 = collector.topDocs().scoreDocs;
collector = TopFieldCollector.create(sort, 1000,
false, true, true, false);
searcher.search(q1, null, collector);
ScoreDoc[] hits2 = collector.topDocs().scoreDocs;
tot+=hits2.length;
CheckHits.checkEqual(q1, hits1, hits2);
BooleanQuery q3 = new BooleanQuery();
q3.add(q1, BooleanClause.Occur.SHOULD);
q3.add(new PrefixQuery(new Term("field2", "b")), BooleanClause.Occur.SHOULD);
TopDocs hits4 = bigSearcher.search(q3, 1);
assertEquals(mulFactor*collector.totalHits + NUM_EXTRA_DOCS/2, hits4.totalHits);
}
} catch (Exception e) {
// For easier debugging
System.out.println("failed query: " + q1);
throw e;
}
// System.out.println("Total hits:"+tot);
}
// used to set properties or change every BooleanQuery
// generated from randBoolQuery.
public static interface Callback {
public void postCreate(BooleanQuery q);
}
// Random rnd is passed in so that the exact same random query may be created
// more than once.
public static BooleanQuery randBoolQuery(Random rnd, boolean allowMust, int level, String field, String[] vals, Callback cb) {
BooleanQuery current = new BooleanQuery(rnd.nextInt()<0);
for (int i=0; i<rnd.nextInt(vals.length)+1; i++) {
int qType=0; // term query
if (level>0) {
qType = rnd.nextInt(10);
}
Query q;
if (qType < 3) {
q = new TermQuery(new Term(field, vals[rnd.nextInt(vals.length)]));
} else if (qType < 4) {
Term t1 = new Term(field, vals[rnd.nextInt(vals.length)]);
Term t2 = new Term(field, vals[rnd.nextInt(vals.length)]);
PhraseQuery pq = new PhraseQuery();
pq.add(t1);
pq.add(t2);
pq.setSlop(10); // increase possibility of matching
q = pq;
} else if (qType < 7) {
q = new WildcardQuery(new Term(field, "w*"));
} else {
q = randBoolQuery(rnd, allowMust, level-1, field, vals, cb);
}
int r = rnd.nextInt(10);
BooleanClause.Occur occur;
if (r<2) {
occur=BooleanClause.Occur.MUST_NOT;
}
else if (r<5) {
if (allowMust) {
occur=BooleanClause.Occur.MUST;
} else {
occur=BooleanClause.Occur.SHOULD;
}
} else {
occur=BooleanClause.Occur.SHOULD;
}
current.add(q, occur);
}
if (cb!=null) cb.postCreate(current);
return current;
}
}