How to specify packagesToScan in HibernateJpaAutoConfiguration? - spring

Question

I'm using HibernateJpaAutoConfiguration directly in a Spring unit test. While Hibernate and EntityManager is configured, no entities are scanned.
Exception
10:29:36.377 [main] INFO o.s.b.f.a.AutowiredAnnotationBeanPostProcessor - JSR-330 javax.inject.Inject' annotation found and supported for autowiring
10:29:36.505 [main] TRACE o.s.b.b.PropertiesConfigurationFactory - Property Sources: org.springframework.boot.context.properties.ConfigurationPropertiesBindingPostProcessor$FlatPropertySources#65f8f5ae
10:29:36.638 [main] TRACE o.s.b.b.PropertiesConfigurationFactory - Property Sources: org.springframework.boot.context.properties.ConfigurationPropertiesBindingPostProcessor$FlatPropertySources#65f8f5ae
10:29:36.716 [main] TRACE o.s.b.b.PropertiesConfigurationFactory - Property Sources: org.springframework.boot.context.properties.ConfigurationPropertiesBindingPostProcessor$FlatPropertySources#65f8f5ae
10:29:36.818 [main] INFO o.s.o.j.LocalContainerEntityManagerFactoryBean - Building JPA container EntityManagerFactory for persistence unit 'default'
10:29:36.842 [main] INFO o.h.jpa.internal.util.LogHelper - HHH000204: Processing PersistenceUnitInfo [
name: default
...]
10:29:36.979 [main] INFO org.hibernate.Version - HHH000412: Hibernate Core {4.3.6.Final}
10:29:36.980 [main] INFO org.hibernate.cfg.Environment - HHH000206: hibernate.properties not found
10:29:36.982 [main] INFO org.hibernate.cfg.Environment - HHH000021: Bytecode provider name : javassist
10:29:37.234 [main] INFO o.h.annotations.common.Version - HCANN000001: Hibernate Commons Annotations {4.0.4.Final}
10:29:37.599 [main] INFO org.hibernate.dialect.Dialect - HHH000400: Using dialect: org.hibernate.dialect.PostgreSQL9Dialect
10:29:37.608 [main] INFO o.h.e.j.internal.LobCreatorBuilder - HHH000424: Disabling contextual LOB creation as createClob() method threw error : java.lang.reflect.InvocationTargetException
10:29:37.648 [main] INFO o.h.h.i.a.ASTQueryTranslatorFactory - HHH000397: Using ASTQueryTranslatorFactory
10:29:37.742 [main] INFO o.h.tool.hbm2ddl.SchemaUpdate - HHH000228: Running hbm2ddl schema update
10:29:37.742 [main] INFO o.h.tool.hbm2ddl.SchemaUpdate - HHH000102: Fetching database metadata
10:29:37.744 [main] INFO o.h.tool.hbm2ddl.SchemaUpdate - HHH000396: Updating schema
10:29:37.745 [main] INFO o.h.tool.hbm2ddl.SchemaUpdate - HHH000232: Schema update complete
My workaround is to create my own LocalContainerEntityManagerFactoryBean as follows:
final LocalContainerEntityManagerFactoryBean factoryBean = new LocalContainerEntityManagerFactoryBean();
factoryBean.setPersistenceUnitName("buzzPU"); // persistence.xml
factoryBean.setDataSource(dataSource);
factoryBean.setJpaVendorAdapter(jpaVendorAdapter);
factoryBean.setPersistenceXmlLocation("classpath*:META-INF/donotparsepersistence.xml");
factoryBean.setPackagesToScan("org.soluvas.buzz.core.jpa");
Note that I don't use META-INF/persistence.xml

Answer 1

From the Spring Boot reference...
62.4 Separate #Entity definitions from Spring configuration
Spring Boot tries to guess the location of your #Entity definitions, based on the #EnableAutoConfiguration it finds. To get more control, you can use the #EntityScan annotation, e.g.
#Configuration
#EnableAutoConfiguration
#EntityScan(basePackageClasses=City.class)
public class Application {
//...
}

Answer 2

Using the following also helps:
#EntityScan("org.soluvas.buzz.core.jpa")
It is an alias for 'basePackages' property that configures a list of packages to scan for annotated entities.
This annotation provides an alternative to manually setting
LocalContainerEntityManagerFactoryBean.setPackagesToScan(String...)
and is particularly useful if you want to configure entity scanning in
a type-safe way, or if your LocalContainerEntityManagerFactoryBean is
auto-configured.