| name | 412-frameworks-quarkus-panache |
| description | Use when you need data access with Quarkus Hibernate ORM Panache — including PanacheEntity / PanacheEntityBase, PanacheRepository, named queries, JPQL, native SQL, DTO projections (project(Class)), pagination (Page.of()), N+1 avoidance (JOIN FETCH), optimistic locking (@Version / OptimisticLockException), @NamedQuery for validated reusable queries, transactions, @TestTransaction for test isolation, and immutable-friendly patterns. This is the Quarkus analogue to Spring Data for relational persistence. This should trigger for requests such as Review Panache entities or repositories in Quarkus; Improve Hibernate ORM data access with Panache; Add DTO projections, JOIN FETCH, pagination, or optimistic locking to Panache queries; Fix N+1 query problems or add @Version concurrency control in Quarkus Panache. Part of cursor-rules-java project |
| license | Apache-2.0 |
| metadata | {"author":"Juan Antonio Breña Moral","version":"0.15.0"} |
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.
Constraints
Compile before persistence changes; verify after.
- MANDATORY: Run
./mvnw compile or mvn compile before applying any change
- PREREQUISITE: Project must compile before applying Panache improvements
- SAFETY: If compilation fails, stop immediately
- BLOCKING CONDITION: Compilation errors must be resolved by the user before proceeding
- VERIFY: Run
./mvnw clean verify or mvn clean verify after applying improvements
- BEFORE APPLYING: Read the reference for detailed rules and examples
When to use this skill
- Review Panache entities or repositories in Quarkus
- Improve Hibernate ORM data access with Panache
- Add DTO projections, JOIN FETCH, pagination, or optimistic locking to Panache queries
- Fix N+1 query problems or add @Version concurrency control in Quarkus Panache
Workflow
- Read reference and assess project context
Read references/412-frameworks-quarkus-panache.md and inspect the current project setup before proposing changes.
- Gather scope and decide target improvements
Identify requested outcomes, constraints, and the minimum safe set of changes to apply.
- Apply framework-aligned changes
Implement or refactor configuration/code following the reference patterns and project conventions.
- Run verification and report results
Execute appropriate build/tests and summarize what changed, what was verified, and any follow-up actions.
Reference
For detailed guidance, examples, and constraints, see references/412-frameworks-quarkus-panache.md.
