Hibernate ORM with Panache

Apply Panache patterns for Hibernate ORM in Quarkus.

What is covered in this Skill?

• Active record (PanacheEntity) vs PanacheRepository — when to use each
• Parameterized JPQL / Panache queries: positional (?1) and named (:param) — no unsafe concatenation
• @NamedQuery on entities for reusable, build-time validated queries
• DTO projections with project(Class) to avoid exposing managed entities
• Pagination with Page.of(pageIndex, pageSize) and query.count()
• N+1 avoidance with JOIN FETCH in JPQL queries
• Optimistic locking with @Version and handling OptimisticLockException
• @Transactional application services
• @TestTransaction for automatic rollback in @QuarkusTest tests
• Mapping entities vs exposing DTOs at REST boundaries
• Native queries via Hibernate when you want controlled SQL in the same transaction; pairing with @411 for JDBC when bypassing Hibernate at the boundary

Scope: Apply recommendations based on the reference rules and good/bad code examples.