Dozer - map class field to a flat representation - dozer

Question

I've been googling and trying different dozer configuration options but so far couldn't find a simple solution...
Problem is as follow:
class A {
String test;
B test2;
}
class B {
String test3;
String test4;
}
class C {
String test;
String test3;
String test4;
}
Now I would like to map all of the fields from A (including B) to a flat representation in C.
Is it possible to map it using just configuration? The problem is that I need to map B in many different classes and I don't want to write a mapping like this for each of them:
<mapping>
<class-a>A</class-a>
<class-b>C</class-b>
<field>
<a>test2.test3</a>
<b>test3</b>
</field>
<field>
<a>test2.test4</a>
<b>test4</b>
</field>
</mapping>
Would appreciate a solution for that :)

Answer 1

The trick is to use mapping IDs and "this". You need to define caseB only once and can reuse it.
<mapping map-id="caseB">
<class-a>B</class-a>
<class-b>C</class-b>
<field>
<a>test3</a>
<b>test3</b>
</field>
<field>
<a>test4</a>
<b>test4</b>
</field>
</mapping>
<mapping>
<class-a>A</class-a>
<class-b>C</class-b>
<field map-id="caseB">
<a>test2</a>
<b>this</b>
</field>
</mapping>

Answer 2

found on dozer faq :
Can I map one field into another field that is nested n layers deep in the destination object?
Yes. Dozer supports dot notation for nested fields. As with other dozer field mappings, these are bi-directional.
<field>
<a>someNestedObj.someOtherNestedObj.someField</a>
<b>someOtherField</b>
</field>
dozer FAQ