Factory Mode SqlSessionFactory and SqlSession in MyBatis Framework

The factory pattern in the MyBatis framework mainly involves two key classes: SqlSessionFactory and SqlSession. 1. SqlSessionFactory: This class is the entry point for the MyBatis framework, used to create SqlSession objects. SqlSessionFactory uses factory mode, hiding the complexity of creating SqlSessions. The SqlSessionFactory interface provides multiple methods to create SqlSession objects, including openSession() and openSession (boolean autoCommit). 2. SqlSession: SqlSession is the main interface for interacting with databases in the MyBatis framework. It provides a series of methods for developers to operate databases, such as adding, deleting, modifying, and querying. SqlSession is used to execute SQL statements and return results. SqlSession also provides support for transactions, which can be committed or rolled back through the commit () and rollback () methods. The following is the complete source code for SqlSessionFactory and SqlSession in the MyBatis framework: 1. SqlSessionFactory interface code: public interface SqlSessionFactory { SqlSession openSession(); SqlSession openSession(boolean autoCommit); //Other methods } 2. SqlSession interface code: public interface SqlSession extends Closeable { //CRUD Method void commit(); void rollback(); //Other methods } Summary: The application of factory mode in the MyBatis framework is mainly reflected in the creation process of SqlSessionFactory. SqlSessionFactory encapsulates the complex logic of creating SqlSession objects, allowing developers to obtain SqlSession instances by simply calling the openSession() method. SqlSession is the entry point for developers to interact with databases, encapsulating a series of database operation methods and providing transaction support. Through the factory mode, the MyBatis framework shields the complexity of accessing the underlying database, allowing developers to operate the database more conveniently. At the same time, the factory mode also provides scalability, allowing for flexible creation of SqlSession instances based on specific business needs.