src/Lucene.Net.Analysis.Common/Analysis/Core/KeywordAnalyzer.cs

// Lucene version compatibility level 4.8.1
using System.IO;

namespace Lucene.Net.Analysis.Core
{
    /*
     * 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>
    /// "Tokenizes" the entire stream as a single token. This is useful
    /// for data like zip codes, ids, and some product names.
    /// </summary>
    public sealed class KeywordAnalyzer : Analyzer
    {
        public KeywordAnalyzer()
        {
        }

        protected internal override TokenStreamComponents CreateComponents(string fieldName, TextReader reader)
        {
            return new TokenStreamComponents(new KeywordTokenizer(reader));
        }
    }
}