hkj-mapping

Generate compile-time Java mappings for DTOs without reflection by defining a spec interface extending MappingSpec. This skill produces type-safe, law-checked mapping code automatically, eliminating runtime risks and hand-written boilerplate.

Handle sparse PATCH updates for Java records by folding present fields into domain objects while ignoring absent ones. This skill generates code that safely applies partial updates to REST resources without reflective overhead.

Validated assembly for multi-source record merging in Java constructs complex records from independently validated parts while accumulating every error. Instead of failing on the first error, it collects comprehensive validation issues across all sources.

Yes, you need the Higher-Kinded-J annotation processor to use law-checked mappings. It is required to enforce type-safe boundary transitions and validate data transformations during the compile-time code generation process.

Compile-time codegen for Java mapping replaces reflective libraries by ensuring domain models and wire DTOs remain synchronized at build time. It enforces type-safe boundary transitions and law-checked data transformations, preventing runtime mapping failures.

Map multiple source records into a single Java DTO using multi-source record merging. This skill generates code that combines independently validated parts from various sources into one target object while accumulating errors comprehensively.