| using Lucene.Net.Index; |
| using Lucene.Net.Util; |
| using System; |
| using System.Collections.Generic; |
| using System.Threading.Tasks; |
| |
| namespace Lucene.Net.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. |
| */ |
| |
| /// <summary> |
| /// Helper class that adds some extra checks to ensure correct |
| /// usage of <see cref="IndexSearcher"/> and <see cref="Weight"/>. |
| /// </summary> |
| public class AssertingIndexSearcher : IndexSearcher |
| { |
| internal readonly Random random; |
| |
| public AssertingIndexSearcher(Random random, IndexReader r) |
| : base(r) |
| { |
| this.random = new Random(random.Next()); |
| } |
| |
| public AssertingIndexSearcher(Random random, IndexReaderContext context) |
| : base(context) |
| { |
| this.random = new Random(random.Next()); |
| } |
| |
| public AssertingIndexSearcher(Random random, IndexReader r, TaskScheduler ex) |
| : base(r, ex) |
| { |
| this.random = new Random(random.Next()); |
| } |
| |
| public AssertingIndexSearcher(Random random, IndexReaderContext context, TaskScheduler ex) |
| : base(context, ex) |
| { |
| this.random = new Random(random.Next()); |
| } |
| |
| /// <summary> |
| /// Ensures, that the returned <see cref="Weight"/> is not normalized again, which may produce wrong scores. </summary> |
| public override Weight CreateNormalizedWeight(Query query) |
| { |
| Weight w = base.CreateNormalizedWeight(query); |
| return new AssertingWeightAnonymousInnerClassHelper(this, random, w); |
| } |
| |
| private class AssertingWeightAnonymousInnerClassHelper : AssertingWeight |
| { |
| private readonly AssertingIndexSearcher outerInstance; |
| |
| public AssertingWeightAnonymousInnerClassHelper(AssertingIndexSearcher outerInstance, Random random, Weight w) |
| : base(random, w) |
| { |
| this.outerInstance = outerInstance; |
| } |
| |
| public override void Normalize(float norm, float topLevelBoost) |
| { |
| throw new InvalidOperationException("Weight already normalized."); |
| } |
| |
| public override float GetValueForNormalization() |
| { |
| throw new InvalidOperationException("Weight already normalized."); |
| } |
| } |
| |
| public override Query Rewrite(Query original) |
| { |
| // TODO: use the more sophisticated QueryUtils.check sometimes! |
| QueryUtils.Check(original); |
| Query rewritten = base.Rewrite(original); |
| QueryUtils.Check(rewritten); |
| return rewritten; |
| } |
| |
| protected override Query WrapFilter(Query query, Filter filter) |
| { |
| if (random.NextBoolean()) |
| { |
| return base.WrapFilter(query, filter); |
| } |
| return (filter == null) ? query : new FilteredQuery(query, filter, TestUtil.RandomFilterStrategy(random)); |
| } |
| |
| protected override void Search(IList<AtomicReaderContext> leaves, Weight weight, ICollector collector) |
| { |
| // TODO: shouldn't we AssertingCollector.wrap(collector) here? |
| base.Search(leaves, AssertingWeight.Wrap(random, weight), collector); |
| } |
| |
| public override string ToString() |
| { |
| return "AssertingIndexSearcher(" + base.ToString() + ")"; |
| } |
| } |
| } |