content: /*
   * 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.
   */
  package org.apache.cassandra.index.sasi.analyzer.filter;
  
  import java.util.Locale;
  import java.util.Set;
  
  /**
   * Filter implementations for input matching Stop Words
   */
  public class StopWordFilters
  {
      public static class DefaultStopWordFilter extends FilterPipelineTask<String, String>
      {
          private Set<String> stopWords = null;
  
          public DefaultStopWordFilter(Locale locale)
          {
              this.stopWords = StopWordFactory.getStopWordsForLanguage(locale);
          }
  
          public String process(String input) throws Exception
          {
              return (stopWords != null && stopWords.contains(input)) ? null : input;
          }
      }
  }
  