Spring Data JDBC with Records

• Records for entity classes (immutable, constructor-friendly)
• @Table for naming when record name differs from the table name
• @Embedded to inline value-object columns into the parent row without a separate table
• Repository pattern
• Immutable updates with static factories for new rows and with* helpers for updates
• save() INSERT vs UPDATE semantics driven by @Id nullability
• Aggregate boundaries: one repository per aggregate root, Set for one-to-many inside the root, foreign keys between aggregates
• Custom queries with @Query and named parameters (no user-input concatenation)
• Transaction management (@Transactional on services; readOnly where appropriate)
• Single query loading (N+1 avoidance)

Constraints

• MANDATORY: Run

  ./mvnw compile

  or

  mvn compile

  before applying any change
• SAFETY: If compilation fails, stop immediately
• VERIFY: Run

  ./mvnw clean verify

  or

  mvn clean verify

  after applying improvements
• BEFORE APPLYING: Read the reference for detailed rules and good/bad patterns

When to use this skill

• Review Java code for Spring Data JDBC
• Apply best practices for Spring Data JDBC in Java code

Reference