This is a one-to-many JPA configuration that can to find, save, and update a record. Hibernate is used
as the JPA provider. There is a Person that has a one-to-many relationship to Address. This example is very similar
to One to Many JpaTemplate Hibernate Configuration and even
uses the same javax.persistence annotated beans, but uses the native JPA style for accessing data objects.
The Person DAO is configured using context:component-scan. Then tx:annotation-driven will configure transactions
on any beans with @Transactional, and just after it the JPA transaction manager is setup.
The HsqldbInitializingDriverManagerDataSource is used to initialize the test HSQLDB database.
The LocalContainerEntityManagerFactoryBean is configured with the DataSource and for use with Hibernate as the JPA adapter.
It also sets the persistenceUnitName attribute to specify which persistence unit to use for this entity manager
(multiple examples use the persistence.xml).
<?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:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.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">
<context:component-scan base-package="org.springbyexample.orm.jpa.dao" />
<tx:annotation-driven />
<bean id="transactionManager"
class="org.springframework.orm.jpa.JpaTransactionManager"
p:entityManagerFactory-ref="entityManagerFactory"/>
<bean id="dataSource"
class="org.springbyexample.jdbc.datasource.HsqldbInitializingDriverManagerDataSource">
<property name="sqlScriptProcessor">
<bean class="org.springbyexample.jdbc.core.SqlScriptProcessor"
p:charset="UTF-8"
p:sqlScripts="classpath:/schema.sql" />
</property>
</bean>
<bean id="entityManagerFactory"
class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean"
p:dataSource-ref="dataSource"
p:persistenceUnitName="simple-jpa">
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter" />
</property>
</bean>
</beans>