Spring hibernate does not create mysql tables - mysql

Question

I am implementing a backend with two database connections. One to a MS Access DB and another one to a MySQL DB. I've setup two configuration classes and the application is running without any error message, but does not create the tables for my entities in mysql db.
Project structure:
my.backend
|
--> configuration
--> controller
--> exceptions
--> model
| |
| --> mysql
| --> msaccess
|
--> repo
| |
| --> mysql
| --> msaccess
|
--> service
My configuration files are looking like this:
MySQL Configuration:
imports [...]
#Configuration
#EnableJpaRepositories(
entityManagerFactoryRef = "mysqlEntityManagerFactory",
transactionManagerRef = "mysqlTransactionManager",
basePackages = "my.backend.repo.mysql"
)
public class MySqlJpaConfig {
#Autowired
private Environment env;
#Bean
#Primary
#ConfigurationProperties(prefix = "mysql")
public LocalContainerEntityManagerFactoryBean mysqlEntityManagerFactory() {
LocalContainerEntityManagerFactoryBean em = new LocalContainerEntityManagerFactoryBean();
em.setDataSource(mysqlDataSource());
em.setPackagesToScan("my.backend.model.mysql");
em.setPersistenceUnitName("mysql");
em.setJpaVendorAdapter(new HibernateJpaVendorAdapter());
HashMap<String, Object> jpaProperties = new HashMap<>();
jpaProperties.put("hibernate.ddl-auto",
env.getProperty("mysql.jpa.hibernate.ddl-auto"));
jpaProperties.put("hibernate.dialect",
env.getProperty("mysql.jpa.properties.hibernate.dialect"));
em.setJpaPropertyMap(jpaProperties);
return em;
}
#Primary
#Bean
public DataSource mysqlDataSource() {
DriverManagerDataSource dataSource
= new DriverManagerDataSource();
dataSource.setUrl(env.getProperty("mysql.url"));
dataSource.setUsername(env.getProperty("mysql.username"));
dataSource.setPassword(env.getProperty("mysql.password"));
dataSource.setDriverClassName(Objects.requireNonNull(env.getProperty("mysql.driver-class-name")));
return dataSource;
}
#Primary
#Bean
public PlatformTransactionManager mysqlTransactionManager() {
JpaTransactionManager transactionManager
= new JpaTransactionManager();
transactionManager.setEntityManagerFactory(
mysqlEntityManagerFactory().getObject());
return transactionManager;
}
}
MS Access Configuration:
#Configuration
#EnableJpaRepositories(
entityManagerFactoryRef = "msaccessEntityManagerFactory",
transactionManagerRef = "msaccessTransactionManager",
basePackages = "my.backend.repo.msaccess"
)
#EnableTransactionManagement
public class MsAccessJpaConfig {
#Autowired
private Environment env;
#Bean
#ConfigurationProperties(prefix = "mysql")
public LocalContainerEntityManagerFactoryBean msaccessEntityManagerFactory() {
LocalContainerEntityManagerFactoryBean em = new LocalContainerEntityManagerFactoryBean();
em.setDataSource(msaccessDataSource());
em.setPackagesToScan("my.backend.model.msaccess");
em.setPersistenceUnitName("msaccess");
//em.setPersistenceProvider(new HibernatePersistenceProvider());
em.setJpaVendorAdapter(new HibernateJpaVendorAdapter());
HashMap<String, Object> jpaProperties = new HashMap<>();
jpaProperties.put("hibernate.dialect",
env.getProperty("msaccess.jpa.properties.hibernate.dialect"));
em.setJpaPropertyMap(jpaProperties);
return em;
}
#Bean
public DataSource msaccessDataSource() {
DriverManagerDataSource dataSource
= new DriverManagerDataSource();
dataSource.setUrl(env.getProperty("msaccess.url"));
dataSource.setDriverClassName(Objects.requireNonNull(env.getProperty("msaccess.driver-class-name")));
return dataSource;
}
#Bean
public PlatformTransactionManager msaccessTransactionManager() {
JpaTransactionManager transactionManager
= new JpaTransactionManager();
transactionManager.setEntityManagerFactory(
msaccessEntityManagerFactory().getObject());
return transactionManager;
}
}
And my application.properties file:
spring.jpa.show-sql=true
spring.jpa.open-in-view=false
# MySQL config
mysql.url=jdbc:mysql://localhost:3306/my_database
mysql.username=
mysql.password=
mysql.driver-class-name=com.mysql.cj.jdbc.Driver
mysql.jpa.hibernate.ddl-auto=update
mysql.jpa.properties.hibernate.dialect=org.hibernate.dialect.MySQL8Dialect
# MS Access config
msaccess.url=jdbc:ucanaccess://c:/users/username/documents/test.accdb
msaccess.driver-class-name=net.ucanaccess.jdbc.UcanaccessDriver
msaccess.jpa.properties.hibernate.dialect=org.hibernate.dialect.SQLServerDialect
When I run my application without the custom configuration and only one vanilla database connection (only MySQL) everything works fine. Also if I run this and perform a get request I get a Error that the table does not exist (obviously), so the connection to MySQL is there but the application just does not create the tables I need. Btw MS Access is working the same way, but I do not want a table generation there.
Am I missing some configuration for the connection?
Thanks for your help!
Cheers, niklas

Answer 1

My guess is that you have to use hibernate.hbm2ddl.auto instead of hibernate.ddl-auto in your jpa properties configuration, since that is the name hibernate looks for