Merge pull request 'Reimplement auto reconnect' (#126) from fixAutoReconnect into master

Reviewed-on: #126
Reviewed-by: YoyoNow <jwsteam@nidido.de>

SpigotCore_Main/src/de/steamwar/sql/SQL.java

@@ -19,6 +19,7 @@
 
 package de.steamwar.sql;
 
+import com.mysql.jdbc.exceptions.jdbc4.CommunicationsException;
 import de.steamwar.core.Core;
 import org.bukkit.configuration.file.YamlConfiguration;
 
@@ -33,27 +34,27 @@ public class SQL {
 	private SQL(){}
 
 	private static Connection con;
-	private static String url;
-	private static String user;
-	private static String password;
+	private static final String URL;
+	private static final String USER;
+	private static final String PASSWORD;
 
-	static{
+	static {
 		File file = new File(Core.getInstance().getDataFolder(), "MySQL.yml");
 		YamlConfiguration config = YamlConfiguration.loadConfiguration(file);
 
 		if(!file.exists())
 			throw new SecurityException("SQL-ConfigFile not found!");
 
-		url = "jdbc:mysql://" + config.getString("HOST") + ":" + config.getString("PORT") + "/" + config.getString("DATABASE");
-		user = config.getString("USER");
-		password = config.getString("PASSWORD");
+		URL = "jdbc:mysql://" + config.getString("HOST") + ":" + config.getString("PORT") + "/" + config.getString("DATABASE");
+		USER = config.getString("USER");
+		PASSWORD = config.getString("PASSWORD");
 
 		connect();
 	}
 
 	private static void connect() {
 		try {
-			con = DriverManager.getConnection(url + "?autoReconnect=true&useServerPrepStmts=true", user, password);
+			con = DriverManager.getConnection(URL + "?useServerPrepStmts=true", USER, PASSWORD);
 		} catch (SQLException e) {
 			throw new SecurityException("Could not start SQL connection", e);
 		}
@@ -96,6 +97,7 @@ public class SQL {
 		}
 	}
 
+	@Deprecated
 	static void update(String qry, Object... objects) {
 		try {
 			prepare(qry, objects).executeUpdate();
@@ -105,7 +107,8 @@ public class SQL {
 		}
 	}
 
-	static ResultSet select(String qry, Object... objects){
+	@Deprecated
+	static ResultSet select(String qry, Object... objects) {
 		try {
 			return prepare(qry, objects).executeQuery();
 		} catch (SQLException e) {
@@ -114,7 +117,8 @@ public class SQL {
 		}
 	}
 
-	static Blob blob(){
+	@Deprecated
+	static Blob blob() {
 		try {
 			return con.createBlob();
 		} catch (SQLException e) {
@@ -123,7 +127,8 @@ public class SQL {
 		}
 	}
 
-	private static PreparedStatement prepare(String qry, Object... objects) throws SQLException{
+	@Deprecated
+	private static PreparedStatement prepare(String qry, Object... objects) throws SQLException {
 		PreparedStatement st = con.prepareStatement(qry);
 		for(int i = 0; i < objects.length; i++){
 			st.setObject(i+1, objects[i]);
@@ -166,10 +171,15 @@ public class SQL {
 
 		private synchronized <T> T prepare(SQLRunnable<T> runnable, Object... objects) {
 			try {
-				setObjects(objects);
-				return runnable.run();
+				try {
+					setObjects(objects);
+					return runnable.run();
+				} catch (CommunicationsException e) {
+					reset();
+					setObjects(objects);
+					return runnable.run();
+				}
 			} catch (SQLException e) {
-				reset();
 				throw new SecurityException("Could not execute SQL statement", e);
 			}
 		}