content: package org.apache.lucene.search.highlight;
  
  /**
   * 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 org.apache.lucene.analysis.TokenStream;
  import org.apache.lucene.analysis.tokenattributes.OffsetAttribute;
  
  /**
   * {@link Fragmenter} implementation which breaks text up into same-size
   * fragments with no concerns over spotting sentence boundaries.
   */
  public class SimpleFragmenter implements Fragmenter {
    private static final int DEFAULT_FRAGMENT_SIZE = 100;
    private int currentNumFrags;
    private int fragmentSize;
    private OffsetAttribute offsetAtt;
  
    public SimpleFragmenter() {
      this(DEFAULT_FRAGMENT_SIZE);
    }
  
    /**
     * 
     * @param fragmentSize size in number of characters of each fragment
     */
    public SimpleFragmenter(int fragmentSize) {
      this.fragmentSize = fragmentSize;
    }
  
  
    /* (non-Javadoc)
     * @see org.apache.lucene.search.highlight.Fragmenter#start(java.lang.String, org.apache.lucene.analysis.TokenStream)
     */
    public void start(String originalText, TokenStream stream) {
      offsetAtt = stream.addAttribute(OffsetAttribute.class);
      currentNumFrags = 1;
    }
  
  
    /* (non-Javadoc)
     * @see org.apache.lucene.search.highlight.Fragmenter#isNewFragment()
     */
    public boolean isNewFragment() {
      boolean isNewFrag = offsetAtt.endOffset() >= (fragmentSize * currentNumFrags);
      if (isNewFrag) {
        currentNumFrags++;
      }
      return isNewFrag;
    }
  
    /**
     * @return size in number of characters of each fragment
     */
    public int getFragmentSize() {
      return fragmentSize;
    }
  
    /**
     * @param size size in characters of each fragment
     */
    public void setFragmentSize(int size) {
      fragmentSize = size;
    }
  
  }
  