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Fuzziness.cs
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/
Fuzziness.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.
*/
using OpenSearch.Net.Utf8Json;
namespace OpenSearch.Client
{
[JsonFormatter(typeof(FuzzinessFormatter))]
public class Fuzziness : IFuzziness
{
private bool _auto;
private int? _low;
private int? _high;
private int? _editDistance;
private double? _ratio;
/// <summary>
/// Generates an edit distance based on the length of the term.
/// </summary>
/// <remarks>
/// <para>Equivalent to <see cref="AutoLength"/> with parameters 3 and 6.</para>
/// <para><see cref="Auto"/> should generally be the preferred value for <see cref="Fuzziness"/></para>
/// </remarks>
public static Fuzziness Auto => new Fuzziness { _auto = true };
/// <summary>
/// Generates an edit distance based on the length of the term.
/// </summary>
/// <param name="low">Must match exactly for terms with less length</param>
/// <param name="high">Two edits allowed for terms with greater length</param>
public static Fuzziness AutoLength(int low, int high) => new Fuzziness
{
_auto = true,
_low = low,
_high = high
};
bool IFuzziness.Auto => _auto;
int? IFuzziness.Low => _low;
int? IFuzziness.High => _high;
int? IFuzziness.EditDistance => _editDistance;
double? IFuzziness.Ratio => _ratio;
/// <summary>
/// The maximum allowed Levenshtein Edit Distance (or number of edits)
/// </summary>
/// <param name="distance">Levenshtein Edit Distance</param>
public static Fuzziness EditDistance(int distance) => new Fuzziness { _editDistance = distance };
public static Fuzziness Ratio(double ratio) => new Fuzziness { _ratio = ratio };
}
}