412-frameworks-quarkus-panache: Скилл доступа к данным

--- 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. Part of the skills-for-java project license: Apache-2.0 metadata: author: Juan Antonio Breña Moral version: 0.13.0 --- # 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 ## Reference For detailed guidance, examples, and constraints, see [references/412-frameworks-quarkus-panache.md](references/412-frameworks-quarkus-panache.md).