--- /dev/null
+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.IndexReader;
+import org.apache.lucene.index.RandomIndexWriter;
+import org.apache.lucene.index.Term;
+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(new TermRangeFilter("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(Searcher 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(IndexReader reader, int docBase) {
+ }
+
+ @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(newField("field", "term", Field.Store.NO, Field.Index.NOT_ANALYZED));
+ 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 (searcher != null) searcher.close();
+ if (reader != null) reader.close();
+ if (directory != null) directory.close();
+ }
+ }
+
+}