+++ /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 java.io.IOException;
-
-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;
-
-public class TestPositiveScoresOnlyCollector extends LuceneTestCase {
-
- private static final class SimpleScorer extends Scorer {
- private int idx = -1;
-
- public SimpleScorer(Weight weight) {
- super(weight);
- }
-
- @Override public float score() throws IOException {
- return idx == scores.length ? Float.NaN : scores[idx];
- }
-
- @Override public int docID() { return idx; }
-
- @Override public int nextDoc() throws IOException {
- return ++idx != scores.length ? idx : NO_MORE_DOCS;
- }
-
- @Override public int advance(int target) throws IOException {
- idx = target;
- return idx < scores.length ? idx : NO_MORE_DOCS;
- }
- }
-
- // The scores must have positive as well as negative values
- private static final float[] scores = new float[] { 0.7767749f, -1.7839992f,
- 8.9925785f, 7.9608946f, -0.07948637f, 2.6356435f, 7.4950366f, 7.1490803f,
- -8.108544f, 4.961808f, 2.2423935f, -7.285586f, 4.6699767f };
-
- public void testNegativeScores() throws Exception {
-
- // The Top*Collectors previously filtered out documents with <= scores. This
- // behavior has changed. This test checks that if PositiveOnlyScoresFilter
- // wraps one of these collectors, documents with <= 0 scores are indeed
- // filtered.
-
- int numPositiveScores = 0;
- for (int i = 0; i < scores.length; i++) {
- if (scores[i] > 0) {
- ++numPositiveScores;
- }
- }
-
- Directory directory = newDirectory();
- RandomIndexWriter writer = new RandomIndexWriter(random, directory);
- writer.commit();
- IndexReader ir = writer.getReader();
- writer.close();
- IndexSearcher searcher = newSearcher(ir);
- Weight fake = new TermQuery(new Term("fake", "weight")).createWeight(searcher);
- Scorer s = new SimpleScorer(fake);
- TopDocsCollector<ScoreDoc> tdc = TopScoreDocCollector.create(scores.length, true);
- Collector c = new PositiveScoresOnlyCollector(tdc);
- c.setScorer(s);
- while (s.nextDoc() != DocIdSetIterator.NO_MORE_DOCS) {
- c.collect(0);
- }
- TopDocs td = tdc.topDocs();
- ScoreDoc[] sd = td.scoreDocs;
- assertEquals(numPositiveScores, td.totalHits);
- for (int i = 0; i < sd.length; i++) {
- assertTrue("only positive scores should return: " + sd[i].score, sd[i].score > 0);
- }
- searcher.close();
- ir.close();
- directory.close();
- }
-
-}