+ database now uses a pooled connection

Signed-off-by: Johannes Theiner <j.theiner@live.de>

src/main/java/de/hsel/itech/db/Database.java

@@ -2,8 +2,12 @@ package de.hsel.itech.db;
 
 import de.hsel.itech.config.Configuration;
 import org.jetbrains.annotations.Nullable;
+import org.mariadb.jdbc.MariaDbPoolDataSource;
 
-import java.sql.*;
+import java.sql.Connection;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.sql.SQLException;
 
 /**
  *
@@ -14,16 +18,24 @@ import java.sql.*;
  */
 public class Database {
 
-    public Database() {
+    private MariaDbPoolDataSource dataSource;
 
+    public Database() {
+        Configuration config = Configuration.get();
+        dataSource = new MariaDbPoolDataSource("jdbc:mysql://" + config.getDatabase().getHostname() + ":" + config.getDatabase().getPort() + "/" + config.getDatabase().getDatabase());
+        try {
+            dataSource.setUser(config.getDatabase().getUsername());
+            dataSource.setPassword(config.getDatabase().getPassword());
+            dataSource.initialize();
+        } catch (SQLException e) {
+            e.printStackTrace();
+        }
     }
 
     @Nullable
     private Connection getConnection() {
-        Configuration config = Configuration.get();
         try {
-            return DriverManager.getConnection("jdbc:mariadb://" + config.getDatabase().getHostname() + ":" + config.getDatabase().getPort() + "/" + config.getDatabase().getDatabase(), config.getDatabase().getUsername(), config.getDatabase().getPassword());
+            return dataSource.getConnection();
-
         } catch (SQLException e) {
             e.printStackTrace();
         }