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Spring Boot JPA Many-to-One Implementation
dev.to/tienbku/jpa-manytoone-example-in-spring-boot-3n97Yapay zekadan makale özeti
- Annotation and Relationship
- @ManyToOne annotation is used for unidirectional Many-to-One relationships
- One row in parent table links to many rows in child table
- Foreign key column (tutorial_id) maps between entities
- Benefits of Many-to-One
- No need for collection size limitations in @OneToMany
- Supports pagination and sorting capabilities
- Allows cascade delete functionality
- Implementation Details
- Tutorial and Comment entities defined with JPA annotations
- Repository interfaces extend JpaRepository for CRUD operations
- REST controllers handle HTTP requests for CRUD operations
- Spring Data JPA automatically implements repository methods
- Technical Setup
- Project uses Spring Boot 3/2 with Spring Web MVC
- Supports MySQL, PostgreSQL, and H2 databases
- Configuration done through application.properties
- Database initialization uses Hibernate with DDL-auto