XML Batch Example

@Configuration
@EnableBatchProcessing
public class XmlParsingApplication {

	@Bean
	public StaxEventItemReader itemReader() throws Exception {
		StaxEventItemReader reader = new StaxEventItemReader<>();

		reader.setName("birthday");
		reader.setResource(new ClassPathResource("all_members.xml"));
		reader.setFragmentRootElementName("ClubMember");

		Jaxb2Marshaller unmarshaller = new Jaxb2Marshaller();
		unmarshaller.setClassesToBeBound(ClubMember.class, Membership.class);
		unmarshaller.afterPropertiesSet();

		reader.setUnmarshaller(unmarshaller);

		return reader;
	}
	
	@Bean
  	public CustomProcessor customProcessor() {
        	return new CustomProcessor<ClubMember, ClubMember>() {
            		//makes a network call with the club member's information
            		//to get the member's birthday
                	//and then sets the birthday attribute on the member to that birthday
        	};
	}

	@Bean
	public ItemWriter itemWriter() {
		return new ItemWriter() {
			@Override
			public void write(List<? extends ClubMember>; items) throws Exception {
				for (ClubMember item : items) {
					System.out.println("item.getName() + 's birthday is " + item.getBirthdate());
				}
			}
		};
	}
	 
	@Autowired
	public JobBuilderFactory jobBuilderFactory;

	@Autowired
	public StepBuilderFactory stepBuilderFactory;


	@Bean
	public Job job() throws Exception {
		return jobBuilderFactory.get("job")
				.start(stepBuilderFactory.get("step1")
					.<ClubMember, ClubMember>chunk(5)
					.reader(itemReader())
          				.processor(customProcessor())
					.writer(itemWriter())
					.build())
				.build();
	}
}