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 org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.index.AtomicReaderContext;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.index.RandomIndexWriter;
import org.apache.lucene.index.Term;
import org.apache.lucene.search.similarities.DefaultSimilarity;
import org.apache.lucene.store.Directory;
import org.apache.lucene.util.LuceneTestCase;
import java.io.IOException;
/** This class only tests some basic functionality in CSQ, the main parts are mostly
* tested by MultiTermQuery tests, explanations seems to be tested in TestExplanations! */
public class TestConstantScoreQuery extends LuceneTestCase {
public void testCSQ() throws Exception {
final Query q1 = new ConstantScoreQuery(new TermQuery(new Term("a", "b")));
final Query q2 = new ConstantScoreQuery(new TermQuery(new Term("a", "c")));
final Query q3 = new ConstantScoreQuery(TermRangeFilter.newStringRange("a", "b", "c", true, true));
QueryUtils.check(q1);
QueryUtils.check(q2);
QueryUtils.checkEqual(q1,q1);
QueryUtils.checkEqual(q2,q2);
QueryUtils.checkEqual(q3,q3);
QueryUtils.checkUnequal(q1,q2);
QueryUtils.checkUnequal(q2,q3);
QueryUtils.checkUnequal(q1,q3);
QueryUtils.checkUnequal(q1, new TermQuery(new Term("a", "b")));
}
private void checkHits(IndexSearcher searcher, Query q, final float expectedScore, final String scorerClassName, final String innerScorerClassName) throws IOException {
final int[] count = new int[1];
searcher.search(q, new Collector() {
private Scorer scorer;
@Override
public void setScorer(Scorer scorer) {
this.scorer = scorer;
assertEquals("Scorer is implemented by wrong class", scorerClassName, scorer.getClass().getName());
if (innerScorerClassName != null && scorer instanceof ConstantScoreQuery.ConstantScorer) {
final ConstantScoreQuery.ConstantScorer innerScorer = (ConstantScoreQuery.ConstantScorer) scorer;
assertEquals("inner Scorer is implemented by wrong class", innerScorerClassName, innerScorer.docIdSetIterator.getClass().getName());
}
}
@Override
public void collect(int doc) throws IOException {
assertEquals("Score differs from expected", expectedScore, this.scorer.score(), 0);
count[0]++;
}
@Override
public void setNextReader(AtomicReaderContext context) {
}
@Override
public boolean acceptsDocsOutOfOrder() {
return true;
}
});
assertEquals("invalid number of results", 1, count[0]);
}
public void testWrapped2Times() throws Exception {
Directory directory = null;
IndexReader reader = null;
IndexSearcher searcher = null;
try {
directory = newDirectory();
RandomIndexWriter writer = new RandomIndexWriter (random(), directory);
Document doc = new Document();
doc.add(newStringField("field", "term", Field.Store.NO));
writer.addDocument(doc);
reader = writer.getReader();
writer.close();
searcher = newSearcher(reader);
// set a similarity that does not normalize our boost away
searcher.setSimilarity(new DefaultSimilarity() {
@Override
public float queryNorm(float sumOfSquaredWeights) {
return 1.0f;
}
});
final Query csq1 = new ConstantScoreQuery(new TermQuery(new Term ("field", "term")));
csq1.setBoost(2.0f);
final Query csq2 = new ConstantScoreQuery(csq1);
csq2.setBoost(5.0f);
final BooleanQuery bq = new BooleanQuery();
bq.add(csq1, BooleanClause.Occur.SHOULD);
bq.add(csq2, BooleanClause.Occur.SHOULD);
final Query csqbq = new ConstantScoreQuery(bq);
csqbq.setBoost(17.0f);
checkHits(searcher, csq1, csq1.getBoost(), ConstantScoreQuery.ConstantScorer.class.getName(), null);
checkHits(searcher, csq2, csq2.getBoost(), ConstantScoreQuery.ConstantScorer.class.getName(), ConstantScoreQuery.ConstantScorer.class.getName());
// for the combined BQ, the scorer should always be BooleanScorer's BucketScorer, because our scorer supports out-of order collection!
final String bucketScorerClass = BooleanScorer.class.getName() + "$BucketScorer";
checkHits(searcher, bq, csq1.getBoost() + csq2.getBoost(), bucketScorerClass, null);
checkHits(searcher, csqbq, csqbq.getBoost(), ConstantScoreQuery.ConstantScorer.class.getName(), bucketScorerClass);
} finally {
if (reader != null) reader.close();
if (directory != null) directory.close();
}
}
public void testConstantScoreQueryAndFilter() throws Exception {
Directory d = newDirectory();
RandomIndexWriter w = new RandomIndexWriter(random(), d);
Document doc = new Document();
doc.add(newStringField("field", "a", Field.Store.NO));
w.addDocument(doc);
doc = new Document();
doc.add(newStringField("field", "b", Field.Store.NO));
w.addDocument(doc);
IndexReader r = w.getReader();
w.close();
Filter filterB = new CachingWrapperFilter(new QueryWrapperFilter(new TermQuery(new Term("field", "b"))));
Query query = new ConstantScoreQuery(filterB);
IndexSearcher s = newSearcher(r);
assertEquals(1, s.search(query, filterB, 1).totalHits); // Query for field:b, Filter field:b
Filter filterA = new CachingWrapperFilter(new QueryWrapperFilter(new TermQuery(new Term("field", "a"))));
query = new ConstantScoreQuery(filterA);
assertEquals(0, s.search(query, filterB, 1).totalHits); // Query field:b, Filter field:a
r.close();
d.close();
}
// LUCENE-5307
// don't reuse the scorer of filters since they have been created with topScorer=false
public void testQueryWrapperFilter() throws IOException {
Directory d = newDirectory();
RandomIndexWriter w = new RandomIndexWriter(random(), d);
Document doc = new Document();
doc.add(newStringField("field", "a", Field.Store.NO));
w.addDocument(doc);
IndexReader r = w.getReader();
w.close();
Filter filter = new QueryWrapperFilter(AssertingQuery.wrap(random(), new TermQuery(new Term("field", "a"))));
IndexSearcher s = newSearcher(r);
assert s instanceof AssertingIndexSearcher;
// this used to fail
s.search(new ConstantScoreQuery(filter), new TotalHitCountCollector());
// check the rewrite
Query rewritten = new ConstantScoreQuery(filter).rewrite(r);
assertTrue(rewritten instanceof ConstantScoreQuery);
assertTrue(((ConstantScoreQuery) rewritten).getQuery() instanceof AssertingQuery);
r.close();
d.close();
}
}