Mapping abstract fields.

[Ishan Bansal]

If my source and destination classes have an abstract field (which can have various concrete types at runtime), how do I Map them using Map-struct?

Eg.
abstract class A {}
class B extends class A {}
class C extends class A {}

abstract class ADto {}
class BDto extends class ADto {}
class CDto extends class ADto {}

class Item {
A a;
}

class ItemDTO {
ADto a;
}

How do I map item to ItemDTO?

[Andreas Gudian]

Hi Ishan,

that's currently not supported and you'd have to declare mapping methods for your specialized types (which would be generated) and implement mapping mehtods with the abstract types to "instance-of" and delegete to the specialized methods.

But there's a feature request already in GitHub: https://github.com/mapstruct/mapstruct/issues/131 - with some remaining questions on how that could look like.

If you have any ideas on how that could look like from a users perspective or maybe want to help with the implementation, feel free to join in the discussion.

Andreas

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