package com.github.mygreen.supercsv.cellprocessor.format;
   
   import java.util.Optional;
   
   import org.supercsv.cellprocessor.ift.CellProcessor;
   import org.supercsv.cellprocessor.ift.StringCellProcessor;
   
   import com.github.mygreen.supercsv.builder.BuildCase;
   import com.github.mygreen.supercsv.builder.Configuration;
  import com.github.mygreen.supercsv.builder.FieldAccessor;
  import com.github.mygreen.supercsv.cellprocessor.ProcessorFactory;
  
  /**
   * 各オブジェクトを文字列に変換するCellProcessor {@link PrintProcessor} を作成します。
   *
   * @since 2.0
   * @author T.TSUCHIE
   *
   */
  public class PrintProcessorFactory<T> implements ProcessorFactory {
  
      @Override
      public Optional<CellProcessor> create(final Optional<CellProcessor> next, final FieldAccessor field,
              final TextFormatter<?> formatter, final Configuration config,
              final BuildCase buildCase, final Class<?>[] groups) {
          
          @SuppressWarnings("unchecked")
          final TextFormatter<T> typeFormatter = (TextFormatter<T>)formatter;
          
          final PrintProcessor<T> processor = next.map(n -> new PrintProcessor<>(typeFormatter, (StringCellProcessor)n))
                  .orElseGet(() -> new PrintProcessor<>(typeFormatter));
          
          return Optional.of(processor);
          
      }
      
  }