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.solr.highlight;
  
  import java.text.BreakIterator;
  import java.util.Locale;
  
  import org.apache.lucene.search.vectorhighlight.BoundaryScanner;
  import org.apache.solr.common.SolrException;
  import org.apache.solr.common.SolrException.ErrorCode;
  import org.apache.solr.common.params.HighlightParams;
  import org.apache.solr.common.params.SolrParams;
  
  public class BreakIteratorBoundaryScanner extends SolrBoundaryScanner {
  
    @Override
    protected BoundaryScanner get(String fieldName, SolrParams params) {
      // construct Locale
      String language = params.getFieldParam(fieldName, HighlightParams.BS_LANGUAGE);
      String country = params.getFieldParam(fieldName, HighlightParams.BS_COUNTRY);
      if(country != null && language == null){
        throw new SolrException(ErrorCode.BAD_REQUEST,
            HighlightParams.BS_LANGUAGE + " parameter cannot be null when you specify " + HighlightParams.BS_COUNTRY);
      }
      Locale locale = null;
      if(language != null){
        locale = country == null ? new Locale(language) : new Locale(language, country);
      }
  
      // construct BreakIterator
      String type = params.getFieldParam(fieldName, HighlightParams.BS_TYPE, "WORD").toLowerCase();
      BreakIterator bi = null;
      if(type.equals("character")){
        bi = locale == null ? BreakIterator.getCharacterInstance() : BreakIterator.getCharacterInstance(locale);
      }
      else if(type.equals("word")){
        bi = locale == null ? BreakIterator.getWordInstance() : BreakIterator.getWordInstance(locale);
      }
      else if(type.equals("line")){
        bi = locale == null ? BreakIterator.getLineInstance() : BreakIterator.getLineInstance(locale);
      }
      else if(type.equals("sentence")){
        bi = locale == null ? BreakIterator.getSentenceInstance() : BreakIterator.getSentenceInstance(locale);
      }
      else
        throw new SolrException(ErrorCode.BAD_REQUEST, type + " is invalid for parameter " + HighlightParams.BS_TYPE);
  
      return new org.apache.lucene.search.vectorhighlight.BreakIteratorBoundaryScanner(bi);
    }
  
  
    ///////////////////////////////////////////////////////////////////////
    //////////////////////// SolrInfoMBeans methods ///////////////////////
    ///////////////////////////////////////////////////////////////////////
    
    @Override
    public String getDescription() {
      return "BreakIteratorBoundaryScanner";
    }
  
    @Override
    public String getSource() {
      return "$URL$";
    }
  
    @Override
    public String getSourceId() {
      return "$Id$";
    }
  
    @Override
    public String getVersion() {
      return "$Revision$";
    }
  
  }
  