I would be happy to contribute this, the question is where is the best place to extend this behaviour. 8. Bugs @InheritConfiguration is broken when using multiple source parameters of the same type (); 0️⃣ @Mapping with defaultValue and method argument where is missing source does nothing (); NPE when running MapStruct from IntelliJ 2020.3 EAP - 1.4.1.Final is the first MapStruct version that supports the new improved IntelliJ experience for annotation processor compiling. Reverse mapping for several targets · Issue #113 · mapstruct/mapstruct What differences between Model Mapper and MapStruct make such a noticeable performance difference? E.g. tell MapStruct to treat Option and Plan similarly). Perhaps we can add an InheritConfiguration option to inherit configs from a different type (e.g. Mapstruct's new Spring plugin - Spring Cloud And finally, let's define the mapper interface method with the @Mapping . The generator comes with sensible defaults and many built-in type conversions, but it steps out of your way when it comes to configuring . Map multiple fields to one with MapStruct. . MicroServices - DTO to Entity & Entity to DTO Mapping - Vinsguru MapStruct — Another annotation processor; we will use it to map between domain objects and data transfer objects (DTOs). To be honest the mapstruct architecture doesn't look very extendable for such use cases to provide custom mapping strategies. MapStruct - An annotation processor for generating type-safe bean mappers Frequently Asked Questions (FAQ) - MapStruct Project Lombok is an annotation processor that (amongst other things) adds getters and setters to the AST (abstract syntax tree) of compiled bean classes. And finally, let's define the mapper interface method with the @Mapping . Yes, as of MapStruct 1.2.0.Beta1 and Lombok 1.16.14. 2. there is no reflection involved. Introduction to MapStruct: An Easy and Fast Mapping at Compile Time This helps locate problems when extending from base mappers Generate imports only for top level classes Iterable type to non-iterable type error no longer reported when using multi source mapping suppressTimestampInGenerated in has been exposed in the @Mapper annotation Overview. MapStruct 1.2 can therefore automatically create nested mapping methods: @Mapper public class OrderMapper { @Mapping(target = "customer.name", source . MapStruct is a slick project which generates type mappers via simple interfaces. MapSruct does not support mapping multiple source properties into a single target property. Unit testing your MapStruct mapper for omitted parameters - EasyRandom ... You have 2 ways to achieve this: Using Mapping#expression This gives us a realistic case to verify how MapStruct deals with mapping object hierarchies. Java Code Examples for Mappings | Tabnine This version is based on org.cliffc.high_scale If this all fails MapStruct tries to do a number of 2 step approaches: mapping method - mapping method. anat0lius commented on Mar 3, 2017 • edited The generated mapping code uses explicit method . Further reading: Frequently Asked Questions (FAQ) - MapStruct Take these 2 classes to map from/to: class Pair<A,B> { A object1; B object2; // getters and setters } class PairDto<A, B>{ A object1; B object2; // getters and setters } .