| 1 | package org.springframework.batch.item.transform; |
| 2 | |
| 3 | import org.springframework.batch.item.ItemWriter; |
| 4 | import org.springframework.batch.item.support.DelegatingItemWriter; |
| 5 | import org.springframework.util.Assert; |
| 6 | |
| 7 | /** |
| 8 | * Transforms the item using injected {@link ItemTransformer} |
| 9 | * before it is written to output by {@link ItemWriter}. |
| 10 | * |
| 11 | * @author Robert Kasanicky |
| 12 | */ |
| 13 | public class ItemTransformerItemWriter extends DelegatingItemWriter { |
| 14 | |
| 15 | private ItemTransformer itemTransformer; |
| 16 | |
| 17 | /** |
| 18 | * Transform the item using the {@link #setItemTransformer(ItemTransformer)}. |
| 19 | */ |
| 20 | protected Object doProcess(Object item) throws Exception { |
| 21 | return itemTransformer.transform(item); |
| 22 | } |
| 23 | |
| 24 | /** |
| 25 | * @param itemTransformer will transform the item before |
| 26 | * it is passed to {@link ItemWriter}. |
| 27 | */ |
| 28 | public void setItemTransformer(ItemTransformer itemTransformer) { |
| 29 | this.itemTransformer = itemTransformer; |
| 30 | } |
| 31 | |
| 32 | public void afterPropertiesSet() throws Exception { |
| 33 | super.afterPropertiesSet(); |
| 34 | Assert.notNull(itemTransformer); |
| 35 | } |
| 36 | } |