/
LowercaseTokenizer.cs
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/
LowercaseTokenizer.cs
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/* SPDX-License-Identifier: Apache-2.0
*
* The OpenSearch Contributors require contributions made to
* this file be licensed under the Apache-2.0 license or a
* compatible open source license.
*/
/*
* Modifications Copyright OpenSearch Contributors. See
* GitHub history for details.
*
* Licensed to Elasticsearch B.V. under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch B.V. 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.
*/
namespace OpenSearch.Client
{
/// <summary>
/// A tokenizer of type lowercase that performs the function of Letter Tokenizer and Lower Case Token Filter together.
/// <para>It divides text at non-letters and converts them to lower case. </para>
/// <para>While it is functionally equivalent to the combination of Letter Tokenizer and Lower Case Token Filter, </para>
/// <para>there is a performance advantage to doing the two tasks at once, hence this (redundant) implementation.</para>
/// </summary>
public interface ILowercaseTokenizer : ITokenizer { }
/// <inheritdoc />
public class LowercaseTokenizer : TokenizerBase, ILowercaseTokenizer
{
public LowercaseTokenizer() => Type = "lowercase";
}
/// <inheritdoc />
public class LowercaseTokenizerDescriptor
: TokenizerDescriptorBase<LowercaseTokenizerDescriptor, ILowercaseTokenizer>, ILowercaseTokenizer
{
protected override string Type => "lowercase";
}
}