| using Lucene.Net.Analysis.TokenAttributes; |
| |
| namespace Lucene.Net.Index |
| { |
| /* |
| * 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. |
| */ |
| |
| using Attribute = Lucene.Net.Util.Attribute; |
| using BytesRef = Lucene.Net.Util.BytesRef; |
| using IAttribute = Lucene.Net.Util.IAttribute; |
| using TokenStream = Lucene.Net.Analysis.TokenStream; |
| |
| // javadocs |
| |
| /// <summary> |
| /// A binary tokenstream that lets you index a single |
| /// binary token (BytesRef value). |
| /// </summary> |
| /// <seealso> cref= CannedBinaryTokenStream </seealso> |
| public sealed class BinaryTokenStream : TokenStream |
| { |
| private readonly IByteTermAttribute bytesAtt;// = addAttribute(typeof(ByteTermAttribute)); |
| private readonly BytesRef bytes; |
| private bool available = true; |
| |
| public BinaryTokenStream(BytesRef bytes) |
| { |
| this.bytes = bytes; |
| bytesAtt = AddAttribute<IByteTermAttribute>(); |
| } |
| |
| public override bool IncrementToken() |
| { |
| if (available) |
| { |
| ClearAttributes(); |
| available = false; |
| bytesAtt.BytesRef = bytes; |
| return true; |
| } |
| return false; |
| } |
| |
| public override void Reset() |
| { |
| available = true; |
| } |
| |
| public interface IByteTermAttribute : ITermToBytesRefAttribute |
| { |
| new BytesRef BytesRef { get; set; } |
| } |
| |
| public class ByteTermAttribute : Attribute, IByteTermAttribute |
| { |
| internal BytesRef bytes; |
| |
| public void FillBytesRef() |
| { |
| // no-op: the bytes was already filled by our owner's incrementToken |
| } |
| |
| public BytesRef BytesRef |
| { |
| get => bytes; |
| set => bytes = value; |
| } |
| |
| public override void Clear() |
| { |
| } |
| |
| public override void CopyTo(IAttribute target) |
| { |
| ByteTermAttribute other = (ByteTermAttribute)target; |
| other.bytes = bytes; |
| } |
| } |
| } |
| } |