SpringMVC on Heroku won't persist with DataBase - spring

Question

I am just starting with a Spring Application on Heroku. Till now everything seems to be working pretty fine, but I cant add anything to the Database. I am not sure if I need to change anything in the WebInterface at Heroku or at my Configurationfiles?
I can connect to my DB and also my Queries work (no Exception though), but the Result of the Query is empty.
If I call the addBooking() from the Service, the new Booking won't get written to the DB (As far as I can tell). The Query in getAvailableBookings() does not get any entries.
Maybe you will be able to find any mistake or am I missing anything?
MyServiceImpl:
import java.util.Date;
import java.util.logging.Logger;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.persistence.criteria.CriteriaQuery;
import javax.persistence.criteria.Root;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.stuttgart.fahrrad.controller.BookingController;
import org.stuttgart.fahrrad.model.Booking;
import com.example.model.Person;
#Service
public class BookingServiceImpl implements BookingService {
static Logger logger = Logger.getLogger(BookingServiceImpl.class.getName());
#PersistenceContext
EntityManager em;
#Override
public void addBooking(Booking booking) {
logger.info("Persisting a booking to the DB!");
em.persist(booking);
}
#Override
#Transactional
public int getAvailableBookings(Date bookingDay) {
CriteriaQuery<Booking> c = em.getCriteriaBuilder().createQuery(Booking.class);
Root<Booking> from = c.from(Booking.class);
return em.createQuery(c).getResultList().size();
}
My applicationContext:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:jdbc="http://www.springframework.org/schema/jdbc"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">
<context:annotation-config />
<context:component-scan base-package="org.stuttgart.fahrrad" />
<mvc:annotation-driven/>
<bean id="jspViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass" value="org.springframework.web.servlet.view.JstlView" />
<property name="prefix" value="/WEB-INF/jsp/" />
<property name="suffix" value=".jsp" />
</bean>
<tx:annotation-driven />
<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory" />
<property name="dataSource" ref="dataSource"/>
</bean>
<beans profile="default">
<jdbc:embedded-database id="dataSource"/>
<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="dataSource"/>
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter"/>
</property>
<property name="jpaProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.HSQLDialect</prop>
<prop key="hibernate.hbm2ddl.auto">create</prop>
</props>
</property>
</bean>
</beans>
<beans profile="prod">
<bean class="java.net.URI" id="dbUrl">
<constructor-arg value="#{systemEnvironment['DATABASE_URL']}"/>
</bean>
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
<property name="url" value="#{ 'jdbc:postgresql://' + #dbUrl.getHost() + #dbUrl.getPath() }"/>
<property name="username" value="#{ #dbUrl.getUserInfo().split(':')[0] }"/>
<property name="password" value="#{ #dbUrl.getUserInfo().split(':')[1] }"/>
</bean>
<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="dataSource"/>
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter"/>
</property>
<property name="jpaProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.PostgreSQLDialect</prop>
<prop key="hibernate.show_sql">true</prop>
<!-- change this to 'verify' before running as a production app -->
<prop key="hibernate.hbm2ddl.auto">update</prop>
</props>
</property>
</bean>
</beans>
</beans>

Answer 1

You do not have #Transactional applied to your addBooking method.