<Resource name="jdbc/my_ds"
          auth="Container"
          type="javax.sql.DataSource"
          driverClassName="org.mariadb.jdbc.Driver"
          url="jdbc:mariadb:failover://localhost:3306/mine"
          username="mine"
          password="me"
          initalSize="1"
          minIdle="1"
          maxIdle="30"
          maxActive="100"
          maxWait="10000"
          jmxEnabled="true"
          validationQuery="SELECT 1"
          testOnBorrow="true"
          minEvictableIdleTimeMillis="60000"
          timeBetweenEvictionRunsMillis="5000"
          />

@Configuration
    @ComponentScan
    @EnableJpaRepositories
    @EnableTransactionManagement
    public class AppConfiguration {

        @Bean
        public DataSource dataSource() {
            JndiDataSourceLookup lookup = new JndiDataSourceLookup();
            return lookup.getDataSource("/jdbc/my_ds");
        }

        @Bean
        public EntityManagerFactory entityManagerFactory() {
            HibernateJpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter();
            vendorAdapter.setGenerateDdl(true);
            vendorAdapter.setShowSql(true);

            LocalContainerEntityManagerFactoryBean factory = new LocalContainerEntityManagerFactoryBean();
            factory.setJpaVendorAdapter(vendorAdapter);
            factory.setPackagesToScan("com.example.persistence");
            factory.setDataSource(dataSource());
            factory.afterPropertiesSet();

            return factory.getObject();
        }

        @Bean
        public PlatformTransactionManager transactionManager() {
            JpaTransactionManager txManager = new JpaTransactionManager();
            txManager.setEntityManagerFactory(entityManagerFactory());
            return txManager;
        }
    }

@Bean
    public DataSource dataSource() {
        return new DriverManagerDataSource("jdbc:mariadb://localhost:3306/mine", "mine", "my");
    }