Spring JPA Generic Criteria

A powerful library that converts DTOs to JPA Specifications with support for multi-joins, making database querying more flexible and maintainable.

Features

• Automatic conversion from DTO to JPA Specifications
• Support for complex multi-join queries
• Flexible criteria building
• Easy integration with Spring Boot applications
• Production-ready with extensive testing

Usage

@Getter
@Setter
public class UserSearchDTO {
    private String name;
    private Integer age;
    @Join("addresses")
    private AddressSearchDTO address;
}

// In your repository
List<User> users = userRepository.findAll(searchDTO.toSpecification());

Benefits

• Reduces boilerplate code
• Improves code maintainability
• Provides type-safe queries
• Supports complex database operations
• Easy to integrate and use