tokenizer.cs

来自「介绍有关全文检索的类库,以lucene为例,在.net环境下实现多种类型文档的全」· CS 代码 · 共 53 行

/*
 * 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 System;

namespace Lucene.Net.Analysis
{
	
    /// <summary>A Tokenizer is a TokenStream whose input is a Reader.
    /// <p>
    /// This is an abstract class.
    /// </summary>
	
    public abstract class Tokenizer : TokenStream
    {
        /// <summary>The text source for this Tokenizer. </summary>
        protected internal System.IO.TextReader input;
		
        /// <summary>Construct a tokenizer with null input. </summary>
        protected internal Tokenizer()
        {
        }
		
        /// <summary>Construct a token stream processing the given input. </summary>
        protected internal Tokenizer(System.IO.TextReader input)
        {
            this.input = input;
        }
		
        /// <summary>By default, closes the input Reader. </summary>
        public override void  Close()
        {
            if (input != null)
            {
                input.Close();
            }
        }
    }
}