package com.terradue.jcatalogue.client.internal.converters;
   
   /*
    *    Copyright 2011-2012 Terradue srl
    *
    *    Licensed 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 static java.lang.String.format;
  
  import java.util.Locale;
  import java.util.StringTokenizer;
  
  import org.apache.commons.beanutils.ConversionException;
  import org.apache.commons.beanutils.Converter;
  
  public final class LocaleConverter
      implements Converter
  {
  
      private static final String SEPARATOR = "-";
  
      public Object convert( @SuppressWarnings( "rawtypes" ) Class type, Object value )
      {
          if ( value == null )
          {
              throw new ConversionException( "Null values not supported in this version." );
          }
  
          if ( String.class == type )
          {
              if ( value instanceof Locale )
              {
                  Locale locale = (Locale) value;
                  return locale.getLanguage() + SEPARATOR + locale.getCountry();
              }
          }
          else if ( Locale.class == type )
          {
              if ( value instanceof String )
              {
                  StringTokenizer tokenizer = new StringTokenizer( (String) value, SEPARATOR );
                  return new Locale( tokenizer.nextToken(), tokenizer.nextToken() );
              }
          }
          throw new ConversionException( format( "type %s and value %s not supported", type, value ) );
      }
  
  }