title: how to Spring-data MongoDB @prepersist @preupdate without using JPA
body: <p>I want to learn, is it possible to use @prepersist/@preupdate like annotations in spring-data-mongodb documents i mean is it possible to make modifications before save or before update?
  I look forward documentation of  <a href="http://docs.spring.io/spring-data/data-mongodb/docs/1.0.0.M5/reference/html/" rel="noreferrer">spring data mongodb</a>  There is a listener BeforeConvertListener, but i want to use without listener, inside @document object just put an annotation to attributes. 
  Is it possible?</p>