Spring Injection in JSR-303's Custom Validators

context.xml

<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <property name="persistenceUnitName" value="spring-jpa"/>
        <property name="jpaPropertyMap">
            <map>
                <entry key="javax.persistence.validation.factory" value-ref="validator" />
            </map>
        </property>
        <property name="jpaProperties">
            <props>
                <prop key="hibernate.dialect">${hibernate.dialect}</prop>
                <prop key="hibernate.hbm2ddl.auto">${hibernate.hbm2ddl.auto}</prop>
                <prop key="hibernate.ejb.naming_strategy">${hibernate.ejb.naming_strategy}</prop>
                <prop key="hibernate.connection.charSet">${hibernate.connection.charSet}</prop>
                <prop key="hibernate.connection.zeroDateTimeBehavior">${hibernate.connection.zeroDateTimeBehavior}</prop>
                <prop key="hibernate.show_sql">${hibernate.show_sql}</prop>
                <prop key="hibernate.format_sql">${hibernate.format_sql}</prop>
            </props>
        </property>
        <property name="jpaVendorAdapter">
            <bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter"/>
        </property>
    </bean>

    <!-- used to inject validator instance wherever we need it-->
    <bean id="validator" class="org.springframework.validation.beanvalidation.LocalValidatorFactoryBean"/>