Java, Map same object to different objects
Multi tool use
Java, Map same object to different objects
I have a list of Car's, I want to map them to different specific Car's like - FordCar, HondaCar, VolkswagenCar... base on value of maker attribute of Car, that is Car.maker
Car
Car
FordCar
HondaCar
VolkswagenCar
maker
Car
Car.maker
Can Dozer, MapStruct do this?
Or is there any framework in Java which can do this?
Map
You can give MapStruct a try. mapstruct.org
– Toan Lu
Jul 1 at 9:25
@ToanLu thanks for your quick response, but here my problem is little different, for example say - I have a list of
Cars, I want to map them to FordCar, HondaCar, VolkswagenCar... base on value of maker attribute of Car, that is Car.maker– CR Sardar
Jul 1 at 9:40
Car
FordCar
HondaCar
VolkswagenCar
maker
Car
Car.maker
@ToanLu: Yor example in the original question shows completely different case. Adjust your example to get better answers.
– mentallurg
Jul 1 at 9:52
@mentallurg did you mean CS Sardar?
– Toan Lu
Jul 1 at 10:32
2 Answers
2
If you don't have any extra requirement, you could do this simply using Java-8.
Map<String, Supplier<Car>> creators = new HashMap(){{
put("honda", ()-> new HondaCar());
put("ford", ()-> new FordCar());
}}
listOfCars.map(Car::getMaker).map(maker -> creators.get(maker).get())
Orika, remap, Selma, MapStruct.
To get your specific mapping, implement it in the mapper.
I have red example of those frameworks, but they are talking about
1-to-1 mapping, not 1-to-many mapping, can you please read once my modified explanations– CR Sardar
Jul 1 at 10:02
1-to-1
1-to-many
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Why Dozer? There is a standard Java type
Map, see docs.oracle.com/javase/tutorial/collections/interfaces/map.html– Honza Zidek
Jul 1 at 9:24