Is there still need to use @Transactional annotation in Spring if the data store is MongoDB -


a typical spring-mvc based crud application has following layout.

the controller layer 

@controller public class webcontroller{       @inject      userservice userservice;       ... }

the service layer

 @service  @transactional  public class userserviceimpl{        @inject       userdao userdao;  }

and dao layer

 @repository  public class userdaoimlp{        @inject       sessectionfactory session;  }

with use of spring annotations, @controller, service, @repository, , @transactional, can take advantage features spring. example, if data store using traditional database such mysql, @transactional annotation can make sure transaction completed. if use mongodb data store, , mongodb not support transaction, there still advantage use @transactional annotation? , how @service , @repository layers?


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