mapstruct-patterns

Enforce compile-time safety for MapStruct DTO mappings by using constructor-based mapping, which catches constructor changes during the build process rather than at runtime. This approach relies on MapStruct compile-time validation and a Default-annotation strategy.

Yes, MapStruct works with CDI componentModel in Jakarta EE projects to enable compile-time validation for DTO and entity mappings. This configuration supports deterministic mapping between DTOs, entities, and records with strong type safety.

Resolve multiple constructors when mapping immutable entities by annotating the selected constructor with a custom @Default annotation. This strategy enables MapStruct compile-time validation to select the proper constructor without runtime checks.

The best way to map records to entities without runtime checks is enforcing constructor-based mapping with MapStruct compile-time validation. Using a Default-annotation strategy and CDI componentModel ensures deterministic, type-safe mapping with no runtime overhead.

MapStruct mappers break when you change an entity constructor because constructor-based mapping enforces compile-time safety, catching constructor changes during the build rather than at runtime. This ensures mapper correctness by failing fast during compilation.

Yes, constructor-based mapping applies to both DTO to entity and entity to DTO conversions. By relying on MapStruct compile-time validation and a Default-annotation strategy, both mapping directions achieve deterministic type safety with no runtime checks.