CODEWITHSUNDEEP
javahibernatespring-boothibernate-5.x
MolecularMan
MolecularMan

Reputation: 257

Entity in not mapped

I'm getting exception Caused by: java.lang.IllegalArgumentException: org.hibernate.hql.internal.ast.QuerySyntaxException: Building is not mapped [from Building] My Building class mapped 

@javax.persistence.Entity
@Table(name = "building")
public class Building extends AbstractModel {

AbstractModel is empty (just for upcast)

Setting packagesToScan

    @Primary
    @Bean
    @Autowired
    public EntityManagerFactory entityManagerFactory(DataSource dataSource) {
       ....
        localContainerEntityManagerFactoryBean.setPackagesToScan("com.app.persistence.model");
      ....
    }

Code throws excetion

public <M extends AbstractModel> List<M> findAll() {
    List<Building> buildings;

    try {
        buildings = (List<Building>) getHibernateTemplate().find("from Building");
    } catch (Exception e) {
        throw e;
    }
    return (List<M>) buildings;
}

Also i setuped 

    @Bean
    public LocalSessionFactoryBean localSessionFactoryBean(DataSource ds) throws ClassNotFoundException {
        LocalSessionFactoryBean localSessionFactoryBean = new LocalSessionFactoryBean();
        localSessionFactoryBean.setDataSource(dataSource());
        return localSessionFactoryBean;
    }

Upvotes: 0

Views: 2057

Answers (1)

M. Deinum
M. Deinum

Reputation: 124441

You are configuring an EntityManagerFactory which is for use with JPA however in your code you are using the plain Hibernate API, which requires a correctly configured SessionFactory instead.

Instead of using plain hibernate I strongly suggest to simply use JPA instead. Just rewrite your code to use an EntityManager instead of Session and/or HibernateTemplate (The latter is something you should avoid using as that isn't recommended anymore since hibernate 3.0.1!). 

@PersistenceContext
private EntityManager em;

public <M extends AbstractModel> List<M> findAll() {
    return em.createQuery("select b FROM Building b", Building.class).getResultList();
}

And remove the setup of plain hibernate i.e. the LocalSessionFactoryBean configuration and HibernateTemplate setup.

This is all you need. Now if you would add Spring Data JPA into the mix you don't even need this, you would only need a BuildingRepository interface.

public interface BuildingRepository extends JpaRepository<Building, Long> {}

Assuming that the id is of type Long.

If you really want to use plain Hibernate (which as stated is something I wouldn't recommend) you need to configure your LocalSessionFactoryBean correctly and specify the packagesToScan for it as well. 

@Bean
public LocalSessionFactoryBean localSessionFactoryBean(DataSource ds) throws ClassNotFoundException {
    LocalSessionFactoryBean localSessionFactoryBean = new LocalSessionFactoryBean();
    localSessionFactoryBean.setDataSource(dataSource());
    localSessionFactoryBean.setPackagesToScan("com.app.persistence.model");
    return localSessionFactoryBean;
}

Upvotes: 1

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