Windows 11 Feature Allowing to Change Power Plan Makes System Hibernate

Hibernate: An Object-Relational Mapping (ORM) Tool for Java

Hibernate is an open-source Object-Relational Mapping (ORM) tool for the Java programming language. It provides a framework for mapping an object-oriented domain model to a relational database.

Key Concepts

• Session: Represents a single unit of work. Each session is associated with a database connection and manages a set of persistent objects.
• SessionFactory: A factory that creates Session objects. It is responsible for configuring the Hibernate environment, including the database connection details and mapping information.
• Persistent Object: An object that is managed by the Hibernate Session and persisted to the database. Persistent objects are instances of Java classes that are mapped to database tables using XML mapping files or annotations.
• Caching: Hibernate provides various levels of caching to improve performance. The first-level cache is associated with each Session and caches the persistent objects loaded during the current session. The second-level cache is a global cache that caches persistent objects across multiple Sessions.

Example Code

  // Import necessary classes
  import org.hibernate.*;
  import org.hibernate.cfg.*;

  // Configure the Hibernate environment
  Configuration config = new Configuration();
  config.configure("hibernate.cfg.xml");

  // Create a SessionFactory
  SessionFactory factory = config.buildSessionFactory();

  // Open a Session
  Session session = factory.openSession();

  // Begin a transaction
  Transaction tx = session.beginTransaction();

  // Create a new User object
  User user = new User();
  user.setName("John Doe");
  user.setEmail("[email protected]");

  // Save the User object to the database
  session.save(user);

  // Commit the transaction
  tx.commit();

  // Close the Session
  session.close();

  // Close the SessionFactory
  factory.close();
  

References

• Books: Hibernate: The Complete Reference (4th Edition), by Gavin King, Christian Bauer, and Guy Harrison
• Articles: "Getting Started with Hibernate" by Javin Paul (https://www.javainuse.com/hibernate/hibernate-tutorial-getting-started)
• Online Resources: Hibernate documentation (https://hibernate.org/orm/)