/* * * 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. * */ using System; using System.Collections.Generic; using System.IO; using System.Collections; using Lucene.Net.Analysis.Tokenattributes; using Lucene.Net.Support; namespace Lucene.Net.Analysis.Nl { /* * A {@link TokenFilter} that stems Dutch words. *
* It supports a table of words that should * not be stemmed at all. The stemmer used can be changed at runtime after the * filter object is created (as long as it is a {@link DutchStemmer}). *
* NOTE: This stemmer does not implement the Snowball algorithm correctly, * specifically doubled consonants. It is recommended that you consider using * the "Dutch" stemmer in the snowball package instead. This stemmer will likely * be deprecated in a future release. */ public sealed class DutchStemFilter : TokenFilter { /* * The actual token in the input stream. */ private DutchStemmer stemmer = null; private ISet