Database Utils

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🔎 Explanations

This mod includes some utilities for working with databases.
The most popular connectors are included directly in the mod JAR, which avoids having to import them into each mod and helps reduce the overall size of your projects.

To import this library, you must add the following to your build.gradle file.

repositories {
    maven { url "https://api.modrinth.com/maven" }
}

dependencies {
    implementation "maven.modrinth:database-utils:1.0.0"
}

🖥️ Usage

Configuration is managed by this library. By using the following line, a .properties file is automatically created (if it does not already exist) and loaded from the config folder.

Config config = new Config(MOD_ID);

In this example, the file will be named MOD_ID.properties.
Here is an example configuration file.

storage=postgres
host=127.0.0.1
port=5432
database=minecraft_db
user=user
password=password

Key	Description
storage	Database type. Must be one of: postgres, mysql, mariadb, sqlite, or test.
host	IP address or hostname of the database server
port	Port used by the database server.
database	Name of the database.
user	User used to connect to the database.
password	Password of the user.

Then, you need to define your own class MyCustomDB, which extends DatabaseQueries.
This class is intended to contain all SQL related methods. In this context, you have access to some method from DatabaseQueries, such as getType, which help you create an implementation compatible with multiple databases.

public class MyCustomDB extends DatabaseQueries {

    public MyCustomDB(Database db) {
        super(db);
    }
    
    @Override
    public void init() {
        try (Connection connection = getConnection()) {
            /* ... */
        } catch (SQLException | DatabaseLinkException e) {
            LOGGER.error("Unable to initialize: {}", e.getMessage());
        }
    }
    
    /* other methods */
    
    public void someMethod() {
        /* ... */
    }
}

You will also need to create a database instance. This is where the Config object is used. The following code snippet retrieves the database defined in the configuration and initializes your DatabaseQueries implementation.

Database database = DatabaseUtils.getDatabase(config);
MyCustomDB custom = new MyCustomDB(database);

You can now call any query defined in your DatabaseQueries implementation through your custom instance.

custom.someMethod();