How to map collections in Dozer

Question

I'd like to do something like:

ArrayList<CustomObject> objects = new ArrayList<CustomObject>(); ... DozerBeanMapper MAPPER = new DozerBeanMapper(); ... ArrayList<NewObject> newObjects = MAPPER.map(objects, ...);  

Assuming:

<mapping>   <class-a>com.me.CustomObject</class-a>   <class-b>com.me.NewObject</class-b>        <field>         <a>id</a>         <b>id2</b>       </field>   </mapping> 

I tried :

ArrayList<NewObject> holder = new ArrayList<NewObject>(); MAPPER.map(objects, holder); 

but the holder object is empty. I also played with changing the second argument without any luck...

Answer 1

To quote:

"Nested collections are handled automatically, but you are correct that top level collections need to be iterated over. Currently there isn't a more elegant way to handle this."

Someone has figured a way to do it without a looping construct in your code base, but I think it's just easier (and more readable/maintainable) to put it in your code. Hopefully they'll add this ability sooner than later.