| using Lucene.Net.Analysis; |
| using System; |
| using System.IO; |
| |
| namespace Lucene.Net.TestFramework.Analysis |
| { |
| /* |
| * 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> |
| /// Throws <see cref="IOException"/> from random <see cref="TokenStream"/> methods. |
| /// <para/> |
| /// This can be used to simulate a buggy analyzer in <see cref="Lucene.Net.Index.IndexWriter"/>, |
| /// where we must delete the document but not abort everything in the buffer. |
| /// </summary> |
| public sealed class CrankyTokenFilter : TokenFilter |
| { |
| internal readonly Random random; |
| internal int thingToDo; |
| |
| /// <summary> |
| /// Creates a new <see cref="CrankyTokenFilter"/>. |
| /// </summary> |
| public CrankyTokenFilter(TokenStream input, Random random) |
| : base(input) |
| { |
| this.random = random; |
| } |
| |
| public override bool IncrementToken() |
| { |
| if (thingToDo == 0 && random.nextBoolean()) |
| { |
| throw new IOException("Fake IOException from TokenStream.IncrementToken()"); |
| } |
| return m_input.IncrementToken(); |
| } |
| |
| public override void End() |
| { |
| base.End(); |
| if (thingToDo == 1 && random.nextBoolean()) |
| { |
| throw new IOException("Fake IOException from TokenStream.End()"); |
| } |
| } |
| |
| public override void Reset() |
| { |
| base.Reset(); |
| thingToDo = random.nextInt(100); |
| if (thingToDo == 2 && random.nextBoolean()) |
| { |
| throw new IOException("Fake IOException from TokenStream.Reset()"); |
| } |
| } |
| |
| protected override void Dispose(bool disposing) |
| { |
| base.Dispose(disposing); |
| if (disposing) |
| { |
| if (thingToDo == 3 && random.nextBoolean()) |
| { |
| throw new IOException("Fake IOException from TokenStream.Dispose(bool)"); |
| } |
| } |
| } |
| } |
| } |