#63 JPA multiple datasource 설정에 오류 발생하는 부분 수정

[humbledude]

예제는 기본으로 제공되는 CoreApplicationContext.java 에서 DB 설정하는 부분을 MainDBConfig.java 로 옮기고 나서 작업해 봤습니다.
아래와 같이 사용하게 되었을 때, SchemaGeneratorBase 에서 Autowired 로 가져오는 LocalContainerEntityManagerFactoryBean 에서 bean 을 연결하지 못해 에러가 발생했었습니다.
그래서 소스상에서 사용하지 않고 있길래 삭제하여 테스트 했더니, 잘 동작 했습니다.

이 부분을 좀더 다듬어 주셔서 Qualifier 등을 쓰거나 해도 multiple datasource 를 사용하게 되는데 더 도움이 될것 같습니다.

예제
MainDBConfig.java : AXBoot 기본 DB 포함

@Configuration
@EnableJpaRepositories(
        basePackages = GlobalConstants.DOMAIN_PACKAGE,
        entityManagerFactoryRef = "entityManagerFactory",
        transactionManagerRef = "transactionManager"
)
public class MainDBConfig {

    @Bean (name = "dataSource")
    @Primary
    public DataSource dataSource(@Named(value = "axBootContextConfig") AXBootContextConfig axBootContextConfig) throws Exception {
        return AXBootDataSourceFactory.create(axBootContextConfig.getDataSourceConfig());
    }

    @Bean (name = "entityManagerFactory")
    @Primary
    public LocalContainerEntityManagerFactoryBean entityManagerFactory(DataSource dataSource, AXBootContextConfig axBootContextConfig) {
        LocalContainerEntityManagerFactoryBean entityManagerFactory = new LocalContainerEntityManagerFactoryBean();

        entityManagerFactory.setDataSource(dataSource);
        entityManagerFactory.setPackagesToScan(axBootContextConfig.getDomainPackageName());
        AXBootContextConfig.DataSourceConfig.HibernateConfig hibernateConfig = axBootContextConfig.getDataSourceConfig().getHibernateConfig();
        entityManagerFactory.setJpaVendorAdapter(hibernateConfig.getHibernateJpaVendorAdapter());
        entityManagerFactory.setJpaProperties(hibernateConfig.getAdditionalProperties());

        return entityManagerFactory;
    }

    @Bean (name = "transactionManager")
    @Primary
    public PlatformTransactionManager transactionManager(EntityManagerFactory entityManagerFactory) throws ClassNotFoundException {
        JpaTransactionManager jpaTransactionManager = new JpaTransactionManager();
        jpaTransactionManager.setEntityManagerFactory(entityManagerFactory);
        return jpaTransactionManager;
    }

    @Bean (name = "entityManager")
    @Primary
    public EntityManager entityManager(EntityManagerFactory entityManagerFactory) {
        return entityManagerFactory.createEntityManager();
    }

EventDBConfig.java : 추가한 DB

@Configuration
@EnableJpaRepositories(
        basePackages = "io.bitsound.go300.event.domain",
        entityManagerFactoryRef = "eventEntityManagerFactory",
        transactionManagerRef = "eventTransactionManager"
)
public class EventDBConfig {

    @Bean (name = "eventDataSource")
    @ConfigurationProperties(prefix = "event.dataSource")
    public DataSource eventDataSource() {
        return DataSourceBuilder.create().build();
    }

    @Bean (name = "eventEntityManagerFactory")
    public LocalContainerEntityManagerFactoryBean eventEntityManagerFactory() {
        LocalContainerEntityManagerFactoryBean em = new LocalContainerEntityManagerFactoryBean();
        em.setDataSource(eventDataSource());
        em.setPackagesToScan("io.bitsound.go300.event.domain");
        HibernateJpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter();
        em.setJpaVendorAdapter(vendorAdapter);

        return em;
    }

    @Bean (name = "eventTransactionManager")
    public PlatformTransactionManager eventTransactionManager(EntityManagerFactory eventEntityManagerFactory) throws ClassNotFoundException {
        JpaTransactionManager jpaTransactionManager = new JpaTransactionManager();
        jpaTransactionManager.setEntityManagerFactory(eventEntityManagerFactory);
        return jpaTransactionManager;
    }

    @Bean (name = "eventEntityManager")
    public EntityManager eventEntityManager(EntityManagerFactory eventEntityManagerFactory) {
        return eventEntityManagerFactory.createEntityManager();

    }

}