Added initial version

Management-Server/src/main/java/ms/system/mysql/SQLManager.java

@@ -0,0 +1,100 @@
+package ms.system.mysql;
+
+import ms.ServerConstants;
+
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.sql.SQLException;
+
+/**
+ * Manages the sql connections.
+ * @author Vexia
+ * 
+ */
+public final class SQLManager {
+
+	/**
+	 * If the sql manager is locally hosted.
+	 */
+	public static final boolean LOCAL = true;
+
+    /**
+     * The database URL.
+     */
+    public static final String DATABASE_URL = (LOCAL ? "127.0.0.1" : "keldagrim.org") + ":3306/" + (SQLManager.LOCAL ? "global" : ServerConstants.DATABASE_NAMES[1]);
+
+    /**
+     * The username of the user.
+     */
+    private static final String USERNAME = (LOCAL ? "root" : "keldagr1_user");
+
+    /**
+     * The password of the user.
+     */
+    private static final String PASSWORD = (LOCAL ? "" : "2jf4wkz$");
+	
+	
+	/**
+	 * IF the sql manager is initialized.
+	 */
+	private static boolean initialized;
+	
+	/**
+	 * Constructs a new {@code SQLManager} {@code Object}
+	 */
+	public SQLManager() {
+		/**
+		 * empty.
+		 */
+	}
+	
+	/**
+	 * Initializes the sql manager.
+	 */
+	public static void init() {
+		initialized = true;
+		WorldListSQLHandler.clearWorldList();
+	}
+	
+	/**
+	 * Gets a connection from the pool.
+	 * @return The connection.
+	 */
+	public static Connection getConnection() {
+		try {
+			return DriverManager.getConnection("jdbc:mysql://" + DATABASE_URL + "?useTimezone=true&serverTimezone=UTC",  USERNAME, PASSWORD);
+		} catch (SQLException e) {
+			System.out.println("Error: Mysql error message=" + e.getMessage() + ".");
+		}
+		return null;
+	}
+
+	/**
+	 * Releases the connection so it's available for usage.
+	 * @param connection The connection.
+	 */
+	public static void close(Connection connection) {
+		try {
+			connection.close();
+		} catch (SQLException e) {
+			e.printStackTrace();
+		}
+	}
+
+	/**
+	 * Gets the initialized.
+	 * @return the initialized
+	 */
+	public static boolean isInitialized() {
+		return initialized;
+	}
+
+	/**
+	 * Sets the bainitialized.
+	 * @param initialized the initialized to set.
+	 */
+	public static void setInitialized(boolean initialized) {
+		SQLManager.initialized = initialized;
+	}
+
+}