Detecting modified nodes in a POJO

[shwetag...@gmail.com]

I am using mapstruct 1.3.1-FINAL and mapping 2 complex custom objects - Employee "source" and Employee "update". Once I apply the "update" on "source" , is there a way I can find out what all nodes were updated in Employee "source" ? My Employee object is quite complex with lots of custom attributes but I just want to further process only the ones that are modified in "source".   For example if the structure of 2 pojos are

Employee{

String name;

Address addresses;

Telephone telecoms;

Email emails;

}

Now there is a possibility of Employee "update" having only changes in Address. Once I copy update on source using mapstruct, I want to be able to detect what all nodes were updated in Employee object so that I can further process them

. I am very new to java and mapstruct and learning so please pardon my ignorance.