| /* |
| * 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.expressions; |
| |
| |
| import org.apache.lucene.document.Document; |
| import org.apache.lucene.document.Field; |
| import org.apache.lucene.document.NumericDocValuesField; |
| import org.apache.lucene.expressions.js.JavascriptCompiler; |
| import org.apache.lucene.index.DirectoryReader; |
| import org.apache.lucene.index.IndexReader; |
| import org.apache.lucene.index.RandomIndexWriter; |
| import org.apache.lucene.index.Term; |
| import org.apache.lucene.search.DoubleValuesSource; |
| import org.apache.lucene.search.IndexSearcher; |
| import org.apache.lucene.search.Query; |
| import org.apache.lucene.search.Rescorer; |
| import org.apache.lucene.search.TermQuery; |
| import org.apache.lucene.search.TopDocs; |
| import org.apache.lucene.search.similarities.ClassicSimilarity; |
| import org.apache.lucene.store.Directory; |
| import org.apache.lucene.util.LuceneTestCase; |
| |
| public class TestExpressionRescorer extends LuceneTestCase { |
| IndexSearcher searcher; |
| DirectoryReader reader; |
| Directory dir; |
| |
| @Override |
| public void setUp() throws Exception { |
| super.setUp(); |
| dir = newDirectory(); |
| RandomIndexWriter iw = new RandomIndexWriter(random(), dir, newIndexWriterConfig().setSimilarity(new ClassicSimilarity())); |
| |
| Document doc = new Document(); |
| doc.add(newStringField("id", "1", Field.Store.YES)); |
| doc.add(newTextField("body", "some contents and more contents", Field.Store.NO)); |
| doc.add(new NumericDocValuesField("popularity", 5)); |
| iw.addDocument(doc); |
| |
| doc = new Document(); |
| doc.add(newStringField("id", "2", Field.Store.YES)); |
| doc.add(newTextField("body", "another document with different contents", Field.Store.NO)); |
| doc.add(new NumericDocValuesField("popularity", 20)); |
| iw.addDocument(doc); |
| |
| doc = new Document(); |
| doc.add(newStringField("id", "3", Field.Store.YES)); |
| doc.add(newTextField("body", "crappy contents", Field.Store.NO)); |
| doc.add(new NumericDocValuesField("popularity", 2)); |
| iw.addDocument(doc); |
| |
| reader = iw.getReader(); |
| searcher = new IndexSearcher(reader); |
| // TODO: fix this test to not be so flaky and use newSearcher |
| searcher.setSimilarity(new ClassicSimilarity()); |
| iw.close(); |
| } |
| |
| @Override |
| public void tearDown() throws Exception { |
| reader.close(); |
| dir.close(); |
| super.tearDown(); |
| } |
| |
| public void testBasic() throws Exception { |
| |
| // create a sort field and sort by it (reverse order) |
| Query query = new TermQuery(new Term("body", "contents")); |
| IndexReader r = searcher.getIndexReader(); |
| |
| // Just first pass query |
| TopDocs hits = searcher.search(query, 10); |
| assertEquals(3, hits.totalHits.value); |
| assertEquals("3", r.document(hits.scoreDocs[0].doc).get("id")); |
| assertEquals("1", r.document(hits.scoreDocs[1].doc).get("id")); |
| assertEquals("2", r.document(hits.scoreDocs[2].doc).get("id")); |
| |
| // Now, rescore: |
| |
| Expression e = JavascriptCompiler.compile("sqrt(_score) + ln(popularity)"); |
| SimpleBindings bindings = new SimpleBindings(); |
| bindings.add("popularity", DoubleValuesSource.fromIntField("popularity")); |
| bindings.add("_score", DoubleValuesSource.SCORES); |
| Rescorer rescorer = e.getRescorer(bindings); |
| |
| hits = rescorer.rescore(searcher, hits, 10); |
| assertEquals(3, hits.totalHits.value); |
| assertEquals("2", r.document(hits.scoreDocs[0].doc).get("id")); |
| assertEquals("1", r.document(hits.scoreDocs[1].doc).get("id")); |
| assertEquals("3", r.document(hits.scoreDocs[2].doc).get("id")); |
| |
| String expl = rescorer.explain(searcher, |
| searcher.explain(query, hits.scoreDocs[0].doc), |
| hits.scoreDocs[0].doc).toString(); |
| |
| // Confirm the explanation breaks out the individual |
| // variables: |
| assertTrue(expl.contains("= double(popularity)")); |
| |
| // Confirm the explanation includes first pass details: |
| assertTrue(expl.contains("= first pass score")); |
| assertTrue(expl.contains("body:contents in")); |
| } |
| } |