Hibernate EmptyInterceptor not reflected entity updated value in database

I am using spring transaction+hibernate. In debug, EmptyInterceptor's save method called and entity2 property change but changed value not updated in database. Did i forgot something for update value in databse

context file configuration for session factory

<bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean" autowire="byName">
        <property name="packagesToScan">
            <list>
                <value>com.fg.dda.entity</value>
            </list>
        </property>
        <property name="entityInterceptor">
            <bean class="com.fg.dda.interceptor.AuditInterceptor"/>
        </property>
        <property name="hibernateProperties">
            <props>
                <prop key="hibernate.dialect">org.hibernate.dialect.SQLServerDialect</prop>
                <prop key="hibernate.default_schema">dbo</prop>
            </props>
        </property>
    </bean>

class

public class AuditInterceptor extends EmptyInterceptor {

    /**
     * 
     */
    private static final long serialVersionUID = 1L;

    @Override
    public boolean onFlushDirty(Object entity, Serializable id, Object[] currentState, Object[] previousState, String[] propertyNames, Type[] types) {
        if(entity instanceof BaseEntity){
            BaseEntity entity2 = (BaseEntity) entity;
            CurrentUserDto currentUserDto =(CurrentUserDto)SecurityContextHolder.getContext().getAuthentication().getPrincipal();
            entity2.setModifiedBy(currentUserDto.getId());
            entity2.setModifiedOn(new Date());
        }
        return true;
    }

    @Override
    public boolean onSave(Object entity, Serializable id, Object[] state, String[] propertyNames, Type[] types) {
        if(entity instanceof BaseEntity){
            BaseEntity entity2 = (BaseEntity) entity;
            CurrentUserDto currentUserDto =(CurrentUserDto)SecurityContextHolder.getContext().getAuthentication().getPrincipal();
            entity2.setCreatedBy(currentUserDto.getId());
            entity2.setCreatedOn(new Date());
            entity2.setModifiedBy(currentUserDto.getId());
            entity2.setModifiedOn(new Date());
        }
        return true;
    }

}