| // lucene version compatibility level: 4.8.1 |
| using Lucene.Net.Analysis.Util; |
| using System; |
| using System.Collections.Generic; |
| |
| namespace Lucene.Net.Analysis.Phonetic |
| { |
| /* |
| * 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> |
| /// Factory for <see cref="DoubleMetaphoneFilter"/>. |
| /// <code> |
| /// <fieldType name="text_dblmtphn" class="solr.TextField" positionIncrementGap="100"> |
| /// <analyzer> |
| /// <tokenizer class="solr.WhitespaceTokenizerFactory"/> |
| /// <filter class="solr.DoubleMetaphoneFilterFactory" inject="true" maxCodeLength="4"/> |
| /// </analyzer> |
| /// </fieldType> |
| /// </code> |
| /// </summary> |
| public class DoubleMetaphoneFilterFactory : TokenFilterFactory |
| { |
| /// <summary>parameter name: true if encoded tokens should be added as synonyms</summary> |
| public static readonly string INJECT = "inject"; |
| /// <summary>parameter name: restricts the length of the phonetic code</summary> |
| public static readonly string MAX_CODE_LENGTH = "maxCodeLength"; |
| /// <summary>default maxCodeLength if not specified</summary> |
| public static readonly int DEFAULT_MAX_CODE_LENGTH = 4; |
| |
| private readonly bool inject; |
| private readonly int maxCodeLength; |
| |
| /// <summary> |
| /// Creates a new <see cref="DoubleMetaphoneFilterFactory"/> |
| /// </summary> |
| public DoubleMetaphoneFilterFactory(IDictionary<string, string> args) |
| : base(args) |
| { |
| inject = GetBoolean(args, INJECT, true); |
| maxCodeLength = GetInt32(args, MAX_CODE_LENGTH, DEFAULT_MAX_CODE_LENGTH); |
| if (args.Count > 0) |
| { |
| throw new ArgumentException(string.Format(J2N.Text.StringFormatter.CurrentCulture, "Unknown parameters: {0}", args)); |
| } |
| } |
| |
| public override TokenStream Create(TokenStream input) |
| { |
| return new DoubleMetaphoneFilter(input, maxCodeLength, inject); |
| } |
| } |
| } |