Executing queries with EntityManager in Spring+Hibernate project - spring

Question

I have a Spring + Hibernate project with configured DataSource:
#Configuration
#Component
public class DataSourceConfig {
#ConfigurationProperties(prefix = "spring.datasource")
#Bean
public DataSource getDataSource() {
return DataSourceBuilder
.create()
.url("jdbc:firebirdsql://**********:3050/mydb?charSet=utf8")
.username("*****")
.password("*****")
.driverClassName("org.firebirdsql.jdbc.FBDriver")
.build();
}
}
EntityManagerFactoriesConfig:
#Configuration
public class EntityManagerFactoriesConfig {
#Autowired
private DataSource dataSource;
#Bean(name = "entityManagerFactory")
public LocalContainerEntityManagerFactoryBean emf() {
LocalContainerEntityManagerFactoryBean emf = new LocalContainerEntityManagerFactoryBean();
emf.setDataSource(dataSource);
emf.setPackagesToScan(
new String[]{"ekoncept"});
emf.setJpaVendorAdapter(
new HibernateJpaVendorAdapter());
return emf;
}
}
TransactionManagerConfig:
#EnableTransactionManagement
public class TransactionManagersConfig {
#Autowired
EntityManagerFactory emf;
#Autowired
private DataSource dataSource;
#Bean(name = "transactionManager")
public PlatformTransactionManager transactionManager() {
JpaTransactionManager tm =
new JpaTransactionManager();
tm.setEntityManagerFactory(emf);
tm.setDataSource(dataSource);
return tm;
}
}
and that's all, no db config in application.properties.
Now I want to access EntityManager or EntityManagerFactory to execute SQL. I know that I should use #Query annotation with Spring, but in this one case I need to execute a simple SQL. I was trying to do it in many ways and finally in all cases I got EntityManager==null. How to get access to Entity manager or EntityManagerFactory??