java-spring-repository-generator

name	java-spring-repository-generator
description	Generate Spring Data JPA repositories from query specifications, data access patterns, or DTO-returning JPQL queries. Use this to create data access layers from business queries, search criteria, or existing query patterns.

Spring Data JPA Repository Generator

Generate repositories that implement custom queries and data access patterns.

Required inputs

• Query specifications or data access pattern descriptions
• Entity class names and DTO definitions
• Search/filter criteria and query parameters
• Target package names if specified

Workflow

1. Read references/implementation.md before generating repository code.
2. If validating or repairing existing repository output, also read references/review.md.
3. Derive repository method names from the business queries or search patterns.
4. Generate @Query methods with JPQL (not native SQL) for DTO-returning queries.
5. Include only parameters that are actually used in the queries.
6. Validate constructor projections, @Param usage, and generic type correctness before finalizing.

Output contract

• Output a complete Spring Data JpaRepository interface.
• Keep entity types generic in JpaRepository<T, ID> and DTOs only in custom query results.
• Use method names that clearly indicate their purpose (e.g., findByIdWithDetails, searchByMultipleCriteria).

Reference files

• references/implementation.md: repository query mapping rules.
• references/review.md: repository validation checklist.