Hibernate ORM

1- Introduction to Hibernate

• What is Hibernate?
• Why use Hibernate? (Advantages over JDBC)
• Core concepts: ORM (Object-Relational Mapping)

2- Hibernate Configuration

• Installation and dependencies (Maven/Gradle)
• Hibernate configuration (hibernate.cfg.xml or annotations)
• Database connection properties

3- Data Modeling with Hibernate

• Entity creation (annotations @Entity, @Table, etc.)
• Relationship mapping:
  • One-to-One (@OneToOne)
  • One-to-Many (@OneToMany)
  • Many-to-One (@ManyToOne)
  • Many-to-Many (@ManyToMany)
• ID management (@Id, ID generation strategies)

4- CRUD Operations with Hibernate

• Creating sessions and transactions
• CRUD operations (Create, Read, Update, Delete)
• Exception handling

5- Querying with Hibernate

• HQL (Hibernate Query Language)
• Criteria API (programmatic queries)
• Native SQL queries (@NamedNativeQuery)

6- Caching in Hibernate

• What is caching?
• Cache levels:
  • First-level cache (session)
  • Second-level cache (session factory)
• Configuration and usage

7- Performance and Optimization

• Performance best practices
• Lazy loading vs eager loading (@Fetch, @Lazy)
• Batch processing and pagination

8- Transactions and Concurrency

• Transaction management in Hibernate
• Transaction strategies (@Transactional)
• Concurrency: optimistic locking (@Version) vs pessimistic locking

9- Spring Integration

• Configuring Hibernate with Spring
• Using SessionFactory and HibernateTemplate
• Introduction to Spring Data JPA

10- Practical Use Cases and Best Practices

• Complete example: Hibernate application
• Common pitfalls and solutions
• Conclusion and future of Hibernate