| /* |
| * 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. |
| */ |
| package org.apache.lucene.search; |
| |
| |
| 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.FieldInvertState; |
| import org.apache.lucene.index.IndexWriterConfig; |
| import org.apache.lucene.index.MultiDocValues; |
| import org.apache.lucene.index.NumericDocValues; |
| import org.apache.lucene.index.RandomIndexWriter; |
| import org.apache.lucene.index.Term; |
| import org.apache.lucene.search.similarities.PerFieldSimilarityWrapper; |
| import org.apache.lucene.search.similarities.Similarity; |
| import org.apache.lucene.store.Directory; |
| import org.apache.lucene.util.LuceneTestCase; |
| |
| public class TestSimilarityProvider extends LuceneTestCase { |
| private Directory directory; |
| private DirectoryReader reader; |
| private IndexSearcher searcher; |
| |
| @Override |
| public void setUp() throws Exception { |
| super.setUp(); |
| directory = newDirectory(); |
| PerFieldSimilarityWrapper sim = new ExampleSimilarityProvider(); |
| IndexWriterConfig iwc = newIndexWriterConfig(new MockAnalyzer(random())).setSimilarity(sim); |
| RandomIndexWriter iw = new RandomIndexWriter(random(), directory, iwc); |
| Document doc = new Document(); |
| Field field = newTextField("foo", "", Field.Store.NO); |
| doc.add(field); |
| Field field2 = newTextField("bar", "", Field.Store.NO); |
| doc.add(field2); |
| |
| field.setStringValue("quick brown fox"); |
| field2.setStringValue("quick brown fox"); |
| iw.addDocument(doc); |
| field.setStringValue("jumps over lazy brown dog"); |
| field2.setStringValue("jumps over lazy brown dog"); |
| iw.addDocument(doc); |
| reader = iw.getReader(); |
| iw.close(); |
| searcher = newSearcher(reader); |
| searcher.setSimilarity(sim); |
| } |
| |
| @Override |
| public void tearDown() throws Exception { |
| reader.close(); |
| directory.close(); |
| super.tearDown(); |
| } |
| |
| public void testBasics() throws Exception { |
| // sanity check of norms writer |
| // TODO: generalize |
| NumericDocValues fooNorms = MultiDocValues.getNormValues(reader, "foo"); |
| NumericDocValues barNorms = MultiDocValues.getNormValues(reader, "bar"); |
| for (int i = 0; i < reader.maxDoc(); i++) { |
| assertEquals(i, fooNorms.nextDoc()); |
| assertEquals(i, barNorms.nextDoc()); |
| assertFalse(fooNorms.longValue() == barNorms.longValue()); |
| } |
| |
| // sanity check of searching |
| TopDocs foodocs = searcher.search(new TermQuery(new Term("foo", "brown")), 10); |
| assertTrue(foodocs.totalHits.value > 0); |
| TopDocs bardocs = searcher.search(new TermQuery(new Term("bar", "brown")), 10); |
| assertTrue(bardocs.totalHits.value > 0); |
| assertTrue(foodocs.scoreDocs[0].score < bardocs.scoreDocs[0].score); |
| } |
| |
| private static class ExampleSimilarityProvider extends PerFieldSimilarityWrapper { |
| private Similarity sim1 = new Sim1(); |
| private Similarity sim2 = new Sim2(); |
| |
| @Override |
| public Similarity get(String field) { |
| if (field.equals("foo")) { |
| return sim1; |
| } else { |
| return sim2; |
| } |
| } |
| } |
| |
| private static class Sim1 extends Similarity { |
| |
| @Override |
| public long computeNorm(FieldInvertState state) { |
| return 1; |
| } |
| |
| @Override |
| public SimScorer scorer(float boost, CollectionStatistics collectionStats, TermStatistics... termStats) { |
| return new SimScorer() { |
| |
| @Override |
| public float score(float freq, long norm) { |
| return 1; |
| } |
| }; |
| } |
| |
| } |
| |
| private static class Sim2 extends Similarity { |
| |
| @Override |
| public long computeNorm(FieldInvertState state) { |
| return 10; |
| } |
| |
| @Override |
| public SimScorer scorer(float boost, CollectionStatistics collectionStats, TermStatistics... termStats) { |
| return new SimScorer() { |
| @Override |
| public float score(float freq, long norm) { |
| return 10; |
| } |
| }; |
| } |
| } |
| } |