package com.github.mygreen.supercsv.cellprocessor.conversion;
   
   import java.util.Optional;
   
   import org.supercsv.cellprocessor.ift.CellProcessor;
   import org.supercsv.cellprocessor.ift.StringCellProcessor;
   
   import com.github.mygreen.supercsv.annotation.conversion.CsvDefaultValue;
   import com.github.mygreen.supercsv.builder.Configuration;
  import com.github.mygreen.supercsv.builder.FieldAccessor;
  import com.github.mygreen.supercsv.cellprocessor.ConversionProcessorFactory;
  import com.github.mygreen.supercsv.cellprocessor.format.TextFormatter;
  
  /**
   * アノテーション{@link CsvDefaultValue}ハンドリングして、{@link DefaultValue}を作成する。
   *
   * @since 2.0
   * @author T.TSUCHIE
   *
   */
  public class DefaultValueFactory implements ConversionProcessorFactory<CsvDefaultValue> {
      
      @Override
      public Optional<CellProcessor> create(final CsvDefaultValue anno, final Optional<CellProcessor> next,
              final FieldAccessor field, final TextFormatter<?> formatter, final Configuration config) {
          
          final DefaultValueion/DefaultValue.html#DefaultValue">DefaultValue processor = next.map(n ->  new DefaultValue(anno.value(), (StringCellProcessor) n))
                  .orElseGet(() -> new DefaultValue(anno.value()));
          
          return Optional.of(processor);
      }
      
  }