| using Lucene.Net.Analysis.TokenAttributes; |
| using Lucene.Net.Util; |
| using System; |
| |
| namespace Lucene.Net.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> |
| /// <see cref="TokenFilter"/> that adds random variable-length payloads. |
| /// </summary> |
| public sealed class MockVariableLengthPayloadFilter : TokenFilter |
| { |
| private const int MAXLENGTH = 129; |
| |
| private readonly IPayloadAttribute payloadAtt; |
| private readonly Random random; |
| private readonly byte[] bytes = new byte[MAXLENGTH]; |
| private readonly BytesRef payload; |
| |
| public MockVariableLengthPayloadFilter(Random random, TokenStream @in) |
| : base(@in) |
| { |
| this.random = random; |
| this.payload = new BytesRef(bytes); |
| this.payloadAtt = AddAttribute<IPayloadAttribute>(); |
| } |
| |
| public override bool IncrementToken() |
| { |
| if (m_input.IncrementToken()) |
| { |
| random.NextBytes(bytes); |
| payload.Length = random.Next(MAXLENGTH); |
| payloadAtt.Payload = payload; |
| return true; |
| } |
| else |
| { |
| return false; |
| } |
| } |
| } |
| } |