| using Lucene.Net.Analysis.Util; |
| using System; |
| using System.Collections.Generic; |
| |
| namespace Lucene.Net.Analysis.Miscellaneous |
| { |
| /* |
| * 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="LengthFilter"/>. |
| /// <code> |
| /// <fieldType name="text_lngth" class="solr.TextField" positionIncrementGap="100"> |
| /// <analyzer> |
| /// <tokenizer class="solr.WhitespaceTokenizerFactory"/> |
| /// <filter class="solr.LengthFilterFactory" min="0" max="1" /> |
| /// </analyzer> |
| /// </fieldType></code> |
| /// </summary> |
| public class LengthFilterFactory : TokenFilterFactory |
| { |
| private readonly int min; |
| private readonly int max; |
| private readonly bool enablePositionIncrements; |
| public const string MIN_KEY = "min"; |
| public const string MAX_KEY = "max"; |
| |
| /// <summary> |
| /// Creates a new <see cref="LengthFilterFactory"/> </summary> |
| public LengthFilterFactory(IDictionary<string, string> args) |
| : base(args) |
| { |
| min = RequireInt32(args, MIN_KEY); |
| max = RequireInt32(args, MAX_KEY); |
| enablePositionIncrements = GetBoolean(args, "enablePositionIncrements", true); |
| if (args.Count > 0) |
| { |
| throw new ArgumentException("Unknown parameters: " + args); |
| } |
| } |
| |
| public override TokenStream Create(TokenStream input) |
| { |
| #pragma warning disable 612, 618 |
| var filter = new LengthFilter(m_luceneMatchVersion, enablePositionIncrements, input, min, max); |
| #pragma warning restore 612, 618 |
| return filter; |
| } |
| } |
| } |