目前我正在使用Spring Boot + Spring Batch + Spring data jpa。
我正在使用RepositoryItemReader。正常
Page<QuoteOfferFulfillment> findByStatus(String status,
Pageable pageable);
其工作正常且按预期工作。但是当我使用本机查询时，我没有收到任何错误，但结果总是为0。我尝试了两种方式：
1.
@Query(value = "SELECT * FROM QUOTE_OFFER_FULFILLMENT QOF WHERE QOF.STATUS= (:status) OR QOF.STATUS=(:status1) AND QOF.RETRY_COUNT < 3 \n#pageable\n", countQuery = "SELECT count(*) FROM QUOTE_OFFER_FULFILLMENT QOF WHERE QOF.STATUS=(:status) OR QOF.STATUS=(:status1) AND QOF.RETRY_COUNT < 3 \n#pageable\n", nativeQuery = true)
Page<QuoteOfferFulfillment> findByStatusAndRetryCount(
@Param("status") String status,
@Param("status1") String status1, Pageable pageable);
and second way
2. Page<QuoteOfferFulfillment> findByStatusAndRetryCount(
@Param("status") QuoteOfferFulfillmentStatus status,
@Param("status1") QuoteOfferFulfillmentStatus status1, Pageable pageable);
在实体类中
@SqlResultSetMappings({
@SqlResultSetMapping(name = "SqlResultSetMapping.count", columns = @ColumnResult(name = "cnt")) })
@NamedNativeQueries({
@NamedNativeQuery(name = "QuoteOfferFulfillment.findByStatusAndRetryCount", resultClass = QuoteOfferFulfillment.class, query = "SELECT * FROM QUOTE_OFFER_FULFILLMENT WHERE STATUS= (:status) OR STATUS=(:status1) AND RETRY_COUNT < 3"),
@NamedNativeQuery(name = "QuoteOfferFulfillment.findByStatusAndRetryCount.count", resultSetMapping = "SqlResultSetMapping.count", query = "SELECT count(*) as cnt FROM QUOTE_OFFER_FULFILLMENT WHERE STATUS= (:status) OR STATUS=(:status1) AND RETRY_COUNT < 3") })
@Entity
public class QuoteOfferFulfillment implements Serializable {
其他批次配置
@Configuration
public class BatchScheduler {
@Bean
public ResourcelessTransactionManager resourcelessTransactionManager() {
return new ResourcelessTransactionManager();
}
@Bean
public JobRepository jobRepository() throws Exception {
return new MapJobRepositoryFactoryBean(resourcelessTransactionManager()).getObject();
}
@Bean
public ThreadPoolTaskExecutor taskExecutor() {
ThreadPoolTaskExecutor taskExecutor = new ThreadPoolTaskExecutor();
taskExecutor.setCorePoolSize(15);
taskExecutor.setMaxPoolSize(20);
taskExecutor.setQueueCapacity(30);
return taskExecutor;
}
@Bean
public SimpleJobLauncher jobLauncher(ThreadPoolTaskExecutor taskExecutor,
JobRepository jobRepository) {
SimpleJobLauncher launcher = new SimpleJobLauncher();
launcher.setTaskExecutor(taskExecutor);
launcher.setJobRepository(jobRepository);
return launcher;
}
}
和
@Configuration
@EnableBatchProcessing
@Import(BatchScheduler.class)
public class BatchConfiguration {
@Autowired
public StepBuilderFactory stepBuilderFactory;
@Autowired
public JobBuilderFactory jobBuilderFactory;
@Autowired
public QuoteOfferFulfillmentRepository fulfillmentRepository;
@Autowired
private SimpleJobLauncher jobLauncher;
@Scheduled(cron = "*/5 * * * * *")
public void perform() throws Exception {
System.out.println("Job Started at :" + new Date());
JobParameters param = new JobParametersBuilder()
.addString("JobID", String.valueOf(System.currentTimeMillis())).toJobParameters();
JobExecution execution = jobLauncher.run(job(), param);
System.out.println("Job finished with status :" + execution.getStatus());
}
@Bean
public RepositoryMetadata repositoryMetadata() {
return new DefaultRepositoryMetadata(QuoteOfferFulfillmentRepository.class);
}
@Bean
public RepositoryItemReader<QuoteOfferFulfillment> reader() {
RepositoryItemReader<QuoteOfferFulfillment> fullfillment = new RepositoryItemReader<QuoteOfferFulfillment>();
fullfillment.setRepository(fulfillmentRepository);
fullfillment.setMethodName("findByStatusAndRetryCount");
List<QuoteOfferFulfillmentStatus> list = new ArrayList<QuoteOfferFulfillmentStatus>();
list.add("FULFILLMENT_READY");
list.add("FAILED");
fullfillment.setArguments(list);
fullfillment.setPageSize(40);
HashMap<String, Direction> sorts = new HashMap<>();
sorts.put("id", Direction.DESC);
fullfillment.setSort(sorts);
return fullfillment;
}
@Bean
public RepositoryItemWriter<QuoteOfferFulfillment> writer() {
System.out.println("BatchConfiguration.writer()");
RepositoryItemWriter<QuoteOfferFulfillment> itemWriter = new RepositoryItemWriter<QuoteOfferFulfillment>();
itemWriter.setRepository(fulfillmentRepository);
itemWriter.setMethodName("save");
return itemWriter;
}
@Bean
public Step step1() throws Exception {
return this.stepBuilderFactory.get("step1")
.<QuoteOfferFulfillment, QuoteOfferFulfillment> chunk(1).reader(reader())
.processor(new SubmitionProcessor()).writer(writer()).build();
}
@Bean
public Job job() throws Exception {
System.out.println("BatchConfiguration2.job() =+> ");
return this.jobBuilderFactory.get("job").incrementer(new RunIdIncrementer()).start(step1())
.listener(new JobCompletionListener()).build();
}
}
我做错了哪里。请让我知道您的建议。
答案 0 :(得分：0)
但是我已经以其他方式解决了
@Bean
public ItemReader<QuoteOfferFulfillment> reader() {
JpaPagingItemReader<QuoteOfferFulfillment> fullfillment = new JpaPagingItemReader<>();
try {
String sqlQuery = "SELECT * FROM FULFILLMENT QOF WHERE QOF.STATUS='"
+ FULFILLMENT_READY + "'" + " OR QOF.STATUS='"
+ FAILED + "'" + " AND QOF.RETRY_COUNT < 3";
JpaNativeQueryProvider<QuoteOfferFulfillment> queryProvider = new JpaNativeQueryProvider<QuoteOfferFulfillment>();
queryProvider.setSqlQuery(sqlQuery);
queryProvider.setEntityClass(QuoteOfferFulfillment.class);
queryProvider.afterPropertiesSet();
fullfillment.setEntityManagerFactory(entityManagerFactory);
fullfillment.setPageSize(3);
fullfillment.setQueryProvider(queryProvider);
fullfillment.afterPropertiesSet();
fullfillment.setSaveState(true);
}
catch (Exception e) {
System.out.println("BatchConfiguration.reader() ==> error " + e.getMessage());
}
return fullfillment;
}
使用RepositoryItemReader还有其他方法吗？原因是使用RepositoryItemReader，我们可以使用Repository接口本身遵循标准的本地查询（@Query）。