LowerCaseFilter.cs
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上传日期:2013-09-30
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文件大小:1k
- /*
- * Copyright 2004 The Apache Software Foundation
- *
- * Licensed 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> Normalizes token text to lower case.
- ///
- /// </summary>
- /// <version> $Id: LowerCaseFilter.java 150259 2004-03-29 22:48:07Z cutting $
- /// </version>
- public sealed class LowerCaseFilter : TokenFilter
- {
- public LowerCaseFilter(TokenStream in_Renamed) : base(in_Renamed)
- {
- }
-
- public override Token Next()
- {
- Token t = input.Next();
-
- if (t == null)
- return null;
-
- t.termText = t.termText.ToLower();
-
- return t;
- }
- }
- }