content: package org.apache.lucene.analysis.sinks;
  
  /**
  * 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.
  */
  
  import java.io.IOException;
  
  import org.apache.lucene.analysis.TeeSinkTokenFilter.SinkFilter;
  import org.apache.lucene.util.AttributeSource;
  
  /**
   * Counts the tokens as they go by and saves to the internal list those between the range of lower and upper, exclusive of upper
   *
   **/
  public class TokenRangeSinkFilter extends SinkFilter {
    private int lower;
    private int upper;
    private int count;
  
    public TokenRangeSinkFilter(int lower, int upper) {
      this.lower = lower;
      this.upper = upper;
    }
  
    
    @Override
    public boolean accept(AttributeSource source) {
      try {
        if (count >= lower && count < upper){
          return true;
        }
        return false;
      } finally {
        count++;
      }
    }
  
    @Override
    public void reset() throws IOException {
      count = 0;
    }
  }
  