package org.springframework.batch.sample.domain.order.internal.extractor;
   
   import java.text.SimpleDateFormat;
   
   import org.springframework.batch.item.file.transform.FieldExtractor;
   import org.springframework.batch.sample.domain.order.Order;
   
   /**
    * @author Dan Garrette
   * @since 2.0.1
   */
  public class HeaderFieldExtractor implements FieldExtractor<Order> {
  
  	private static final SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy/MM/dd");
  
  	public Object[] extract(Order order) {
  		return new Object[] { "BEGIN_ORDER:", order.getOrderId(), dateFormat.format(order.getOrderDate()) };
  	}
  
  }