Detailed explanation of the technical principles of the "Genormous" framework in the Java class library

Detailed explanation of the technical principles of the "Genormous" framework in the Java class library Background: Genormous is a Java class library that provides developers with a way to simplify database operations.This article will introduce the technical principles of the Genormous framework in detail. 1 Overview The main goal of the Genormous framework is to help developers simplify the database operation process by automatically generating code related to databases.It can automatically generate physical classes, DAO (data access objects) classes, and some common CRUDs (creation, reading, updating, deleting) methods according to the database mode.This allows developers to focus more on business logic without manually writing duplicate database operation code. 2. Technical principles The technical principles of Genormous framework are mainly divided into the following steps: 2.1 Database mode read First of all, the Genormous framework will establish a connection with the target database through the JDBC (Java database connection), and read the mode information of the database.It analyzes metadata information such as tables, columns, primary keys, and external keys, and stores it in memory for subsequent code generation. 2.2 physical class generation According to the read database mode information, the Genormous framework will automatically generate the corresponding physical class.The physical class usually represents the table in the database, which contains the member variable corresponding to each column of the table, and provides the corresponding setter and getter method.In this way, developers can directly operate the data of the database table through the physical class.The following is a simplified sample code: public class User { private int id; private String username; private String password; // Structure method, setter and getter method omitted // Other custom methods } 2.3 DAO class generation In addition to the physical class, the Genormous framework also generates the corresponding DAO class.The DAO class is often used to encapsulate database operation logic. It provides a series of CRUD methods for developers.The following is a simplified sample code: public class UserDao { public void save(User user) { // Save user data to the logical code of the database } public User findById(int id) { // Find the logic code of user data based on ID return null; } public void update(User user) { // Update the logical code of user data } public void delete(User user) { // Delete the logical code of user data } // Other custom methods } 2.4 code generation Finally, the Genormous framework will generate the corresponding Java source code file according to the physical and DAO templates.Developers can further customize and modify them as needed. 3. Use examples The following is a simple example of using the Genormous framework: // Define the database connection information String url = "jdbc:mysql://localhost:3306/mydb"; String username = "root"; String password = "password"; // Create a Genormous instance Genormous genormous = new Genormous(url, username, password); // Specify a table to generate code genormous.addTable("user"); // Execute code generation genormous.generate(); In the above example, we created a Genormous instance by specifying the database connection information.Then, we added a table called "User", and finally called the "Generate" method to execute the code generation process. 4 Conclusion By using the Genormous framework, developers can quickly and simply generate code to interact with databases.It generates through automated code, which greatly reduces the workload of developers to manually write and maintain database operation code, while improving the maintenance and readability of the code. In summary, the technical principles of the Genormous framework mainly include steps such as database mode reading, physical class generation, DAO classification, and code generation.Through these steps, Genormous can help developers simplify database operations and improve development efficiency. (The above is an example article, for reference only)