Null Pointer ExceptionSpring boot jpa - database

Question

I have the next piece of code:
Main class
#SpringBootApplication
#EnableScheduling
public class GeolocalizacionApplication extends SpringBootServletInitializer {
public static void main(String[] args) {
SpringApplication.run(GeolocalizacionApplication.class, args);
}
}
Dao
#Transactional
#Repository
public class UsigRequestPersistanceDaoImpl implements UsigRequestPersistanceDao {
#PersistenceContext
private EntityManager em;
public List<UsigRequestPersistance> getRequest() {
Query query = em.createQuery("select v.requestId from UsigRequestSeq v").getFirstResult();
}
}
Model class
#Entity
#Table(name= "seq_usig_request", schema = "xxxx")
public class UsigRequestSeq {
#Id
#Column(name = "request_id", nullable = false)
private Integer requestId;
public Integer getRequestId() {
return requestId;
}
public void setRequestId(Integer requestId) {
this.requestId = requestId;
}
}
Configuration
#Configuration
#EnableTransactionManagement
public class DatabaseConfiguration {
#Bean
public LocalSessionFactoryBean sessionFactory(){
LocalSessionFactoryBean sessionFactoryBean = new LocalSessionFactoryBean();
sessionFactoryBean.setDataSource(dataSource());
sessionFactoryBean.setPackagesToScan("xxxx");
sessionFactoryBean.setHibernateProperties(hibernateProperties());
return sessionFactoryBean;
}
#Bean
public DataSource dataSource(){
DriverManagerDataSource dataSource = new DriverManagerDataSource();
dataSource.setDriverClassName("com.teradata.jdbc.TeraDriver");
dataSource.setUrl("jdbc:teradata://teradata.xxxx/TMODE=ANSI,CHARSET=UTF8");
dataSource.setUsername("xxxx");
dataSource.setPassword("xxxx");
return dataSource;
}
#Bean(name = "properties")
public Properties hibernateProperties(){
Properties properties = new Properties();
properties.put("hibernate.dialect", "org.hibernate.dialect.TeradataDialect");
//properties.put("hibernate.show_sql", "true");
return properties;
}
#Bean
#Autowired
public HibernateTransactionManager transactionManager(){
HibernateTransactionManager hibernateTransactionManager = new HibernateTransactionManager();
hibernateTransactionManager.setSessionFactory(sessionFactory().getObject());
return hibernateTransactionManager;
}
}
Application.properties
spring.jpa.database-platform=org.hibernate.dialect.TeradataDialect
spring.jpa.hibernate.naming.physical-strategy=org.hibernate.boot.model.naming.PhysicalNamingStrategyStandardImpl
Then I do have a controller, but I think it's not necessary to put it here. In my controller y havec a method which calls getRequest() method.
Here I have some of the stack
java.lang.NullPointerException: null
at com.xxxx.Geolocalizacion.dao.UsigRequestPersistanceDaoImpl.getRequest(UsigRequestPersistanceDaoImpl.java:82) ~[classes/:na]
at com.xxxx.Geolocalizacion.controller.GeoController.ejecutar(GeoController.java:51) ~[classes/:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_181]
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[na:1.8.0_181]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[na:1.8.0_181]
at java.lang.reflect.Method.invoke(Unknown Source) ~[na:1.8.0_181]
I believe that I have problems with the createQuery native method, I debug the program and there's where it breaks, but I can´t finds why. Am I missing something?