Do you know how we can call the Mongo Repository classes in Process class of Spring Batch?

I am newbie to the Spring Batch and mongo integration example. I've the exact requirement mentio0ned in the link http://stackoverflow.com/questions/32237475/org-springframework-beans-factory-beancreationexception-error-creating-bean-wit.

Please guide how we can call mongo repository classes from the ItemProcessor classes in Spring Batch. As I am using Spring Batch mongodb integration. Please help.