| /* |
| * 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.backward_codecs.lucene84; |
| |
| import java.io.IOException; |
| import java.util.Arrays; |
| import java.util.Collections; |
| import java.util.List; |
| import org.apache.lucene.analysis.MockAnalyzer; |
| import org.apache.lucene.backward_codecs.lucene40.blocktree.FieldReader; |
| import org.apache.lucene.backward_codecs.lucene40.blocktree.Stats; |
| import org.apache.lucene.backward_codecs.lucene84.Lucene84ScoreSkipReader.MutableImpactList; |
| import org.apache.lucene.codecs.Codec; |
| import org.apache.lucene.codecs.CompetitiveImpactAccumulator; |
| import org.apache.lucene.document.Document; |
| import org.apache.lucene.document.Field; |
| import org.apache.lucene.index.BasePostingsFormatTestCase; |
| import org.apache.lucene.index.DirectoryReader; |
| import org.apache.lucene.index.Impact; |
| import org.apache.lucene.index.IndexWriter; |
| import org.apache.lucene.index.IndexWriterConfig; |
| import org.apache.lucene.store.ByteArrayDataInput; |
| import org.apache.lucene.store.Directory; |
| import org.apache.lucene.store.IOContext; |
| import org.apache.lucene.store.IndexInput; |
| import org.apache.lucene.store.IndexOutput; |
| import org.apache.lucene.util.TestUtil; |
| |
| public class TestLucene84PostingsFormat extends BasePostingsFormatTestCase { |
| private final Codec codec = TestUtil.alwaysPostingsFormat(new Lucene84RWPostingsFormat()); |
| |
| @Override |
| protected Codec getCodec() { |
| return codec; |
| } |
| |
| /** Make sure the final sub-block(s) are not skipped. */ |
| public void testFinalBlock() throws Exception { |
| Directory d = newDirectory(); |
| IndexWriter w = new IndexWriter(d, new IndexWriterConfig(new MockAnalyzer(random()))); |
| for (int i = 0; i < 25; i++) { |
| Document doc = new Document(); |
| doc.add(newStringField("field", Character.toString((char) (97 + i)), Field.Store.NO)); |
| doc.add(newStringField("field", "z" + Character.toString((char) (97 + i)), Field.Store.NO)); |
| w.addDocument(doc); |
| } |
| w.forceMerge(1); |
| |
| DirectoryReader r = DirectoryReader.open(w); |
| assertEquals(1, r.leaves().size()); |
| FieldReader field = (FieldReader) r.leaves().get(0).reader().terms("field"); |
| // We should see exactly two blocks: one root block (prefix empty string) and one block for z* |
| // terms (prefix z): |
| Stats stats = field.getStats(); |
| assertEquals(0, stats.floorBlockCount); |
| assertEquals(2, stats.nonFloorBlockCount); |
| r.close(); |
| w.close(); |
| d.close(); |
| } |
| |
| public void testImpactSerialization() throws IOException { |
| // omit norms and omit freqs |
| doTestImpactSerialization(Collections.singletonList(new Impact(1, 1L))); |
| |
| // omit freqs |
| doTestImpactSerialization(Collections.singletonList(new Impact(1, 42L))); |
| // omit freqs with very large norms |
| doTestImpactSerialization(Collections.singletonList(new Impact(1, -100L))); |
| |
| // omit norms |
| doTestImpactSerialization(Collections.singletonList(new Impact(30, 1L))); |
| // omit norms with large freq |
| doTestImpactSerialization(Collections.singletonList(new Impact(500, 1L))); |
| |
| // freqs and norms, basic |
| doTestImpactSerialization( |
| Arrays.asList( |
| new Impact(1, 7L), |
| new Impact(3, 9L), |
| new Impact(7, 10L), |
| new Impact(15, 11L), |
| new Impact(20, 13L), |
| new Impact(28, 14L))); |
| |
| // freqs and norms, high values |
| doTestImpactSerialization( |
| Arrays.asList( |
| new Impact(2, 2L), |
| new Impact(10, 10L), |
| new Impact(12, 50L), |
| new Impact(50, -100L), |
| new Impact(1000, -80L), |
| new Impact(1005, -3L))); |
| } |
| |
| private void doTestImpactSerialization(List<Impact> impacts) throws IOException { |
| CompetitiveImpactAccumulator acc = new CompetitiveImpactAccumulator(); |
| for (Impact impact : impacts) { |
| acc.add(impact.freq, impact.norm); |
| } |
| try (Directory dir = newDirectory()) { |
| try (IndexOutput out = dir.createOutput("foo", IOContext.DEFAULT)) { |
| Lucene84SkipWriter.writeImpacts(acc, out); |
| } |
| try (IndexInput in = dir.openInput("foo", IOContext.DEFAULT)) { |
| byte[] b = new byte[Math.toIntExact(in.length())]; |
| in.readBytes(b, 0, b.length); |
| List<Impact> impacts2 = |
| Lucene84ScoreSkipReader.readImpacts(new ByteArrayDataInput(b), new MutableImpactList()); |
| assertEquals(impacts, impacts2); |
| } |
| } |
| } |
| } |