java persistence

<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.getPort() + @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>