Entities not persisting. Are RepositoryItemWriter & SimpleJpaWriter thread-safe?

Question

I have encountered an odd issue with a RepositoryItemWriter, where it does not appear to be persisting entities correctly through my configured Spring Data JPA repository to the

Answer 1

Looks like I fixed it by adding a PlatformTransactionManager. See changes below. Hope this helps someone, as this is one that I've been fighting for a couple of weeks now. What I don't understand is why Spring Boot is able to provide a JtaTransactionManager w/o Bitronix or Atomikos in my pom.xml.

@SuppressWarnings("SpringJavaAutowiringInspection")
@Bean
public Step orderStep(StepBuilderFactory stepBuilderFactory, ItemReader<OrderEncounter> orderEncounterReader, ItemWriter<List<Order>> orderWriter,
                      ItemProcessor<OrderEncounter, List<Order>> orderProcessor, TaskExecutor taskExecutor, PlatformTransactionManager platformTransactionManager) {
    return stepBuilderFactory.get("orderStep")
            .<OrderEncounter, List<Order>> chunk(10)
            .reader(orderEncounterReader)
            .processor(orderProcessor)
            .writer(orderWriter)
            .taskExecutor(taskExecutor)
            .transactionManager(platformTransactionManager)
            .build();
}

And the configuration class:

@Configuration
public class JTOpenDataSourceConfiguration {

@Bean(name="distillerDataSource")
@Primary
@ConfigurationProperties(prefix="spring.datasource.distiller")
public DataSource distillerDataSource() {
    return DataSourceBuilder.create().build();
}

@Bean
@ConfigurationProperties(prefix="spring.datasource.target")
public DataSource targetDataSource() {
    return DataSourceBuilder.create().build();
}

@Bean
public PlatformTransactionManager platformTransactionManager(@Qualifier("targetDataSource") DataSource targetDataSource) {
    JpaTransactionManager transactionManager = new JpaTransactionManager();
    transactionManager.setDataSource(targetDataSource);
    return transactionManager;
}