Refactoring, yes.

pom.xml

@@ -70,7 +70,7 @@
 		<dependency>
 			<groupId>ru.simsonic</groupId>
 			<artifactId>rscUtilityLibrary</artifactId>
-			<version>2.0.1</version>
+			<version>2.0.2</version>
 			<scope>compile</scope>
 			<type>jar</type>
 		</dependency>

src/main/java/ru/simsonic/rscPermissions/API/Settings.java

@@ -1,5 +1,5 @@
 package ru.simsonic.rscPermissions.API;
-import ru.simsonic.rscPermissions.ConnectionHelper;
+import ru.simsonic.rscUtilityLibrary.ConnectionMySQL.ConnectionParams;
 
 public interface Settings
 {
@@ -19,5 +19,5 @@ public interface Settings
 	public long    getRegionFinderGranularity();
 	public int     getAutoReloadDelayTicks();
 	public boolean isUseMetrics();
-	public ConnectionHelper getConnectionChain();
+	public ConnectionParams getConnectionParams();
 }

src/main/java/ru/simsonic/rscPermissions/ActionThreads.java

@@ -0,0 +1,15 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package ru.simsonic.rscPermissions;
+
+/**
+ *
+ * @author simsonic
+ */
+public class ActionThreads
+{
+	
+}

src/main/java/ru/simsonic/rscPermissions/Backends/Backend.java

@@ -1,17 +0,0 @@
-package ru.simsonic.rscPermissions.Backends;
-import ru.simsonic.rscPermissions.DataTypes.RowEntity;
-import ru.simsonic.rscPermissions.DataTypes.RowInheritance;
-import ru.simsonic.rscPermissions.DataTypes.RowPermission;
-import ru.simsonic.rscPermissions.InternalCache.AbstractPermissionsCache;
-
-public interface Backend
-{
-	public abstract void             fetchIntoCache(AbstractPermissionsCache cache);
-	public abstract RowEntity[]      fetchEntities();
-	public abstract RowPermission[]  fetchPermissions();
-	public abstract RowInheritance[] fetchInheritance();
-
-	public abstract void insertExampleRows();
-	public abstract void updateEntityText(String entity, boolean entity_type, String text, boolean isPrefix);
-	public abstract void addUserParentGroup(String user, String newGroup);
-}

src/main/java/ru/simsonic/rscPermissions/Backends/BackendDatabase.java

@@ -8,42 +8,42 @@ import ru.simsonic.rscPermissions.DataTypes.EntityType;
 import ru.simsonic.rscPermissions.DataTypes.RowEntity;
 import ru.simsonic.rscPermissions.DataTypes.RowInheritance;
 import ru.simsonic.rscPermissions.DataTypes.RowPermission;
-import ru.simsonic.rscPermissions.InternalCache.AbstractPermissionsCache;
 import ru.simsonic.rscPermissions.BukkitPluginMain;
+import ru.simsonic.rscPermissions.DataTypes.DatabaseContents;
 import ru.simsonic.rscUtilityLibrary.ConnectionMySQL;
 
-public class BackendMySQL extends ConnectionMySQL implements Backend
+public class BackendDatabase extends ConnectionMySQL
 {
 	protected final BukkitPluginMain rscp;
-	public BackendMySQL(BukkitPluginMain plugin)
+	public BackendDatabase(BukkitPluginMain plugin)
 	{
+		super(BukkitPluginMain.consoleLog);
 		this.rscp = plugin;
 	}
-	public synchronized void Initialize(String database, String username, String password, String prefixes)
-	{
-		super.Initialize("rscp:MySQL", database, username, password, prefixes);
-	}
 	@Override
-	public synchronized boolean Connect()
+	public synchronized boolean connect()
 	{
-		return super.Connect()
+		return super.connect()
 			&& executeUpdateT("Initialize_main_v1")
 			&& executeUpdateT("Cleanup_tables");
 	}
-	@Override
-	public synchronized void fetchIntoCache(AbstractPermissionsCache cache)
+	public synchronized DatabaseContents retrieveContents()
 	{
 		executeUpdateT("Cleanup_tables");
+		final DatabaseContents contents = new DatabaseContents();
+		contents.entities = fetchEntities();
+		contents.permissions = fetchPermissions();
+		contents.inheritance = fetchInheritance();
 		BukkitPluginMain.consoleLog.log(Level.INFO,
 			"[rscp] Fetched {0} entities, {1} permissions and {2} inheritances",
 			new Integer[]
 			{
-				cache.ImportEntities(fetchEntities()),
-				cache.ImportPermissions(fetchPermissions()),
-				cache.ImportInheritance(fetchInheritance())
+				contents.entities.length,
+				contents.permissions.length,
+				contents.inheritance.length,
 			});
+		return contents;
 	}
-	@Override
 	public synchronized RowEntity[] fetchEntities()
 	{
 		final ArrayList<RowEntity> result = new ArrayList<>();
@@ -67,7 +67,6 @@ public class BackendMySQL extends ConnectionMySQL implements Backend
 		}
 		return result.toArray(new RowEntity[result.size()]);
 	}
-	@Override
 	public synchronized RowPermission[] fetchPermissions()
 	{
 		final ArrayList<RowPermission> result = new ArrayList<>();
@@ -99,7 +98,6 @@ public class BackendMySQL extends ConnectionMySQL implements Backend
 		}
 		return result.toArray(new RowPermission[result.size()]);
 	}
-	@Override
 	public synchronized RowInheritance[] fetchInheritance()
 	{
 		final ArrayList<RowInheritance> result = new ArrayList<>();
@@ -132,12 +130,10 @@ public class BackendMySQL extends ConnectionMySQL implements Backend
 		}
 		return result.toArray(new RowInheritance[result.size()]);
 	}
-	@Override
 	public synchronized void insertExampleRows()
 	{
 		executeUpdateT("Insert_example_rows_v1");
 	}
-	@Override
 	public synchronized void updateEntityText(String entity, boolean entity_type, String text, boolean isPrefix)
 	{
 		if("".equals(entity))
@@ -150,7 +146,6 @@ public class BackendMySQL extends ConnectionMySQL implements Backend
 		setupQueryTemplate("{TEXT}", (text != null) ? "'" + text + "'" : "NULL");
 		executeUpdateT("Update_entity_text");
 	}
-	@Override
 	public synchronized void addUserParentGroup(String user, String newGroup)
 	{
 		setupQueryTemplate("{USER}", user);

src/main/java/ru/simsonic/rscPermissions/Backends/BackendJson.java

@@ -6,46 +6,60 @@ import java.io.FileInputStream;
 import java.io.FileNotFoundException;
 import java.io.InputStreamReader;
 import java.nio.charset.Charset;
+import ru.simsonic.rscPermissions.DataTypes.DatabaseContents;
 import ru.simsonic.rscPermissions.DataTypes.RowEntity;
 import ru.simsonic.rscPermissions.DataTypes.RowInheritance;
 import ru.simsonic.rscPermissions.DataTypes.RowPermission;
 
 public class BackendJson
 {
+	private final File workingDir;
+	public BackendJson(File workingDir)
+	{
+		this.workingDir = workingDir;
+	}
+	public synchronized DatabaseContents retrieveContents()
+	{
+		final DatabaseContents result = new DatabaseContents();
+		result.entities    = fetchEntities();
+		result.permissions = fetchPermissions();
+		result.inheritance = fetchInheritance();
+		return result;
+	}
 	private final static String localEntitiesFile    = "entities.json";
 	private final static String localPermissionsFile = "permissions.json";
 	private final static String localInheritanceFile = "inheritance.json";
-	public RowEntity[] fetchEntities()
+	private RowEntity[] fetchEntities()
 	{
 		final Gson gson = new Gson();
 		try
 		{
 			JsonReader jr = new JsonReader(new InputStreamReader(new FileInputStream(
-				new File(localEntitiesFile)), Charset.forName("UTF-8")));
+				new File(workingDir, localEntitiesFile)), Charset.forName("UTF-8")));
 			return gson.fromJson(jr, RowEntity[].class);
 		} catch(FileNotFoundException ex) {
 		}
 		return null;
 	}
-	public RowPermission[] fetchPermissions()
+	private RowPermission[] fetchPermissions()
 	{
 		final Gson gson = new Gson();
 		try
 		{
 			JsonReader jr = new JsonReader(new InputStreamReader(new FileInputStream(
-				new File(localEntitiesFile)), Charset.forName("UTF-8")));
+				new File(workingDir, localEntitiesFile)), Charset.forName("UTF-8")));
 			return gson.fromJson(jr, RowPermission[].class);
 		} catch(FileNotFoundException ex) {
 		}
 		return null;
 	}
-	public RowInheritance[] fetchInheritance()
+	private RowInheritance[] fetchInheritance()
 	{
 		final Gson gson = new Gson();
 		try
 		{
 			JsonReader jr = new JsonReader(new InputStreamReader(new FileInputStream(
-				new File(localEntitiesFile)), Charset.forName("UTF-8")));
+				new File(workingDir, localEntitiesFile)), Charset.forName("UTF-8")));
 			return gson.fromJson(jr, RowInheritance[].class);
 		} catch(FileNotFoundException ex) {
 		}

src/main/java/ru/simsonic/rscPermissions/BridgeForBukkitAPI.java

@@ -4,10 +4,14 @@ import ru.simsonic.rscPermissions.Bukkit.VaultPermission;
 
 public class BridgeForBukkitAPI
 {
-	private final BukkitPluginMain rscp;
-	private final VaultPermission vaultPermission;
-	private final VaultChat vaultChat;
 	private static BridgeForBukkitAPI instance;
+	public  static BridgeForBukkitAPI getInstance()
+	{
+		return instance;
+	}
+	private final BukkitPluginMain rscp;
+	private final VaultPermission  vaultPermission;
+	private final VaultChat        vaultChat;
 	protected BridgeForBukkitAPI(BukkitPluginMain plugin)
 	{
 		BridgeForBukkitAPI.instance = BridgeForBukkitAPI.this;
@@ -15,10 +19,6 @@ public class BridgeForBukkitAPI
 		this.vaultPermission = new VaultPermission(this);
 		this.vaultChat = new VaultChat(this, vaultPermission);
 	}
-	public static BridgeForBukkitAPI getInstance()
-	{
-		return instance;
-	}
 	public org.bukkit.plugin.java.JavaPlugin getPlugin()
 	{
 		return this.rscp;

src/main/java/ru/simsonic/rscPermissions/Bukkit/BukkitPermissionManager.java

@@ -11,10 +11,10 @@ import ru.simsonic.rscPermissions.InternalCache.ResolutionParams;
 import ru.simsonic.rscPermissions.InternalCache.ResolutionResult;
 import ru.simsonic.rscUtilityLibrary.RestartableThread;
 
-public class BukkitPermissions extends RestartableThread
+public class BukkitPermissionManager extends RestartableThread
 {
 	private final BukkitPluginMain rscp;
-	public BukkitPermissions(BukkitPluginMain plugin)
+	public BukkitPermissionManager(BukkitPluginMain plugin)
 	{
 		this.rscp = plugin;
 	}
@@ -23,8 +23,29 @@ public class BukkitPermissions extends RestartableThread
 	private final HashMap<Player, String> suffixes = new HashMap<>();
 	private final HashMap<Player, RowPermission[]> persistentPermissions = new HashMap<>();
 	private final HashMap<Player, RowPermission[]> transientPermissions = new HashMap<>();
-	public final HashMap<Player, PermissionAttachment> attachments = new HashMap<>();
-	public void recalculateOnlinePlayers()
+	public  final HashMap<Player, PermissionAttachment> attachments = new HashMap<>();
+	public void recalculateOnlinePlayersSync()
+	{
+		try
+		{
+			Runnable syncTask = new Runnable()
+			{
+				@Override
+				public synchronized void run()
+				{
+					rscp.permissionManager.recalculateOnlinePlayersAsync();
+					notify();
+				}
+			};
+			synchronized(syncTask)
+			{
+				rscp.getServer().getScheduler().runTask(rscp, syncTask);
+				syncTask.wait();
+			}
+		} catch(InterruptedException ex) {
+		}
+	}
+	public void recalculateOnlinePlayersAsync()
 	{
 		updateQueue.addAll(rscp.getServer().getOnlinePlayers());
 		rscp.scheduleAutoUpdate();

src/main/java/ru/simsonic/rscPermissions/Bukkit/BukkitPluginConfiguration.java

@@ -1,14 +1,8 @@
 package ru.simsonic.rscPermissions.Bukkit;
-import java.util.ArrayList;
-import java.util.Collections;
-import java.util.HashMap;
-import java.util.Iterator;
-import java.util.List;
-import java.util.Map;
 import org.bukkit.configuration.file.FileConfiguration;
-import ru.simsonic.rscPermissions.ConnectionHelper;
 import ru.simsonic.rscPermissions.BukkitPluginMain;
 import ru.simsonic.rscPermissions.API.Settings;
+import ru.simsonic.rscUtilityLibrary.ConnectionMySQL.ConnectionParams;
 
 public class BukkitPluginConfiguration implements Settings
 {
@@ -131,39 +125,15 @@ public class BukkitPluginConfiguration implements Settings
 		return nRegionFinderGranularity;
 	}
 	@Override
-	public ConnectionHelper getConnectionChain()
+	public ConnectionParams getConnectionParams()
 	{
-		List<Map<?, ?>> configServers = plugin.getConfig().getMapList("servers");
-		List<HashMap<String, String>> serverlist = new ArrayList<>();
-		for(Iterator<Map<?, ?>> it = configServers.iterator(); it.hasNext();)
-		{
-			Map<String, String> server = (Map<String, String>)it.next();
-			HashMap<String, String> nodeinfo = new HashMap<>();
-			String nodename = (String)server.get("nodename");
-			String database = (String)server.get("database");
-			String username = (String)server.get("username");
-			String password = (String)server.get("password");
-			String prefixes = (String)server.get("prefixes");
-			String workmode = (String)server.get("workmode");
-			if(nodename != null &&  ! "".equals(nodename))
-			{
-				nodeinfo.put("nodename", nodename);
-				nodeinfo.put("database", (database != null) ? database : "localhost:3306/minecraft");
-				nodeinfo.put("username", (username != null) ? username : "user");
-				nodeinfo.put("password", (password != null) ? password : "pass");
-				nodeinfo.put("prefixes", (prefixes != null) ? prefixes : "rscp_");
-				nodeinfo.put("workmode", (workmode != null) ? workmode : "none");
-				serverlist.add(nodeinfo);
-			}
-		}
-		Collections.reverse(serverlist);
-		ConnectionHelper connPrev = null;
-		for(HashMap<String, String> server : serverlist)
-		{
-			ConnectionHelper conn = new ConnectionHelper(plugin, connPrev);
-			conn.Initialize(server.get("database"), server.get("username"), server.get("password"), server.get("prefixes"));
-			connPrev = conn;
-		}
-		return connPrev;
+		final FileConfiguration config = plugin.getConfig();
+		final ConnectionParams result = new ConnectionParams();
+		result.nodename = "rscp";
+		result.database = config.getString("settings.connection.database", "localhost:3306/minecraft");
+		result.username = config.getString("settings.connection.username", "user1");
+		result.password = config.getString("settings.connection.password", "pass1");
+		result.prefixes = config.getString("settings.connection.prefixes", "rscp_");
+		return result;
 	}
 }

src/main/java/ru/simsonic/rscPermissions/Bukkit/BukkitRegionProviders.java

@@ -1,4 +1,4 @@
-package ru.simsonic.rscPermissions;
+package ru.simsonic.rscPermissions.Bukkit;
 import com.sk89q.worldguard.bukkit.WorldGuardPlugin;
 import com.sk89q.worldguard.protection.ApplicableRegionSet;
 import com.sk89q.worldguard.protection.managers.RegionManager;
@@ -16,8 +16,9 @@ import org.bukkit.Location;
 import org.bukkit.World;
 import org.bukkit.entity.Player;
 import org.bukkit.plugin.Plugin;
+import ru.simsonic.rscPermissions.BukkitPluginMain;
 
-public final class RegionListProviders
+public final class BukkitRegionProviders
 {
 	private final BukkitPluginMain plugin;
 	private Plugin worldguard;
@@ -25,7 +26,7 @@ public final class RegionListProviders
 	private final Map<Player, Set<String>> regionsByPlayer = new HashMap<>();
 	private final Map<Player, Integer> playerRegionHashes = new HashMap<>();
 	private final Map<Player, World> playerLastWorld = new HashMap<>();
-	public RegionListProviders(BukkitPluginMain rscp)
+	public BukkitRegionProviders(BukkitPluginMain rscp)
 	{
 		this.plugin = rscp;
 	}

src/main/java/ru/simsonic/rscPermissions/Bukkit/RegionUpdateObserver.java

@@ -1,5 +1,6 @@
-package ru.simsonic.rscPermissions;
+package ru.simsonic.rscPermissions.Bukkit;
 import org.bukkit.entity.Player;
+import ru.simsonic.rscPermissions.BukkitPluginMain;
 import ru.simsonic.rscUtilityLibrary.BukkitListeners.MovingPlayersCatcher;
 import ru.simsonic.rscUtilityLibrary.RestartableThread;
 
@@ -9,7 +10,7 @@ public class RegionUpdateObserver extends RestartableThread
 	private static final long granularityMax = 10000;
 	private final BukkitPluginMain rscp;
 	private final MovingPlayersCatcher movedPlayers = new MovingPlayersCatcher();
-	RegionUpdateObserver(BukkitPluginMain rscp)
+	public RegionUpdateObserver(BukkitPluginMain rscp)
 	{
 		this.rscp = rscp;
 	}

src/main/java/ru/simsonic/rscPermissions/Bukkit/VaultPermission.java

@@ -242,4 +242,4 @@ public class VaultPermission extends net.milkbowl.vault.permission.Permission
 	{
 		throw new UnsupportedOperationException("This method is still unsupported. Sorry.");
 	}
-}
+}

src/main/java/ru/simsonic/rscPermissions/BukkitPluginMain.java

@@ -1,15 +1,20 @@
 package ru.simsonic.rscPermissions;
+import ru.simsonic.rscPermissions.Bukkit.BukkitRegionProviders;
+import ru.simsonic.rscPermissions.Bukkit.RegionUpdateObserver;
 import ru.simsonic.rscPermissions.Bukkit.BukkitMaintenance;
 import ru.simsonic.rscPermissions.API.Settings;
 import java.io.IOException;
 import java.util.logging.Level;
 import java.util.logging.Logger;
+import org.bukkit.Bukkit;
 import org.bukkit.command.Command;
 import org.bukkit.command.CommandSender;
 import org.bukkit.plugin.java.JavaPlugin;
 import org.bukkit.scheduler.BukkitScheduler;
 import org.mcstats.MetricsLite;
-import ru.simsonic.rscPermissions.Bukkit.BukkitPermissions;
+import ru.simsonic.rscPermissions.Backends.BackendDatabase;
+import ru.simsonic.rscPermissions.Backends.BackendJson;
+import ru.simsonic.rscPermissions.Bukkit.BukkitPermissionManager;
 import ru.simsonic.rscPermissions.Bukkit.BukkitPluginConfiguration;
 import ru.simsonic.rscPermissions.Bukkit.PlayerEventsListener;
 import ru.simsonic.rscPermissions.InternalCache.InternalCache;
@@ -18,18 +23,19 @@ import ru.simsonic.rscUtilityLibrary.TextProcessing.GenericChatCodes;
 
 public final class BukkitPluginMain extends JavaPlugin
 {
-	private static final String chatPrefix = "{_YL}[rscp] {GOLD}";
-	public  static final Logger consoleLog = Logger.getLogger("Minecraft");
+	private static final String chatPrefix = "{YELLOW}[rscp] {GOLD}";
+	public  static final Logger consoleLog = Bukkit.getLogger();
 	public  final Settings settings = new BukkitPluginConfiguration(this);
 	private final BridgeForBukkitAPI bridgeForBukkit = new BridgeForBukkitAPI(this);
-	public  final PlayerEventsListener listener = new PlayerEventsListener(this);
+	public  final PlayerEventsListener bukkitListener = new PlayerEventsListener(this);
+	public  final BackendJson fileCache = new BackendJson(getDataFolder());
+	public  final BackendDatabase connection = new BackendDatabase(this);
 	public  final InternalCache internalCache = new InternalCache(this);
-	public  final BukkitPermissions permissionManager = new BukkitPermissions(this);
-	public  final RegionListProviders regionListProvider = new RegionListProviders(this);
+	public  final BukkitPermissionManager permissionManager = new BukkitPermissionManager(this);
+	public  final BukkitRegionProviders regionListProvider = new BukkitRegionProviders(this);
 	private final RegionUpdateObserver regionUpdateObserver = new RegionUpdateObserver(this);
 	public  final CommandHelper commandHelper = new CommandHelper(this);
 	public  final BukkitMaintenance maintenance = new BukkitMaintenance(this);
-	public  ConnectionHelper connectionList;
 	private MetricsLite metrics;
 	@Override
 	public void onLoad()
@@ -42,13 +48,7 @@ public final class BukkitPluginMain extends JavaPlugin
 	public void onEnable()
 	{
 		settings.readSettings();
-		connectionList = settings.getConnectionChain();
-		if(connectionList == null)
-		{
-			consoleLog.log(Level.WARNING, "[rscp] No MySQL servers were specified in config.yml, disabling...");
-			getServer().getPluginManager().disablePlugin(this);
-			return;
-		}
+		connection.initialize(settings.getConnectionParams());
 		// Register event's dispatcher
 		getServer().getPluginManager().registerEvents(maintenance, this);
 		regionUpdateObserver.registerListeners();
@@ -58,7 +58,7 @@ public final class BukkitPluginMain extends JavaPlugin
 		internalCache.setDefaultGroup(settings.getDefaultGroup());
 		permissionManager.start();
 		regionUpdateObserver.start();
-		connectionList.threadFetchTablesData();
+		commandHelper.threadFetchTablesData();
 		// Metrics
 		if(settings.isUseMetrics())
 		{
@@ -79,9 +79,8 @@ public final class BukkitPluginMain extends JavaPlugin
 		getServer().getServicesManager().unregisterAll(this);
 		regionUpdateObserver.stop();
 		permissionManager.stop();
-		// cache.clear();
-		connectionList.Disconnect();
-		connectionList = null;
+		internalCache.clear();
+		connection.disconnect();
 		regionListProvider.deintegrate();
 		metrics = null;
 		consoleLog.info("[rscp] rscPermissions has been disabled.");
@@ -98,7 +97,7 @@ public final class BukkitPluginMain extends JavaPlugin
 			@Override
 			public void run()
 			{
-				connectionList.threadFetchTablesData();
+				commandHelper.threadFetchTablesData.start();
 			}
 		}, delay);
 	}

src/main/java/ru/simsonic/rscPermissions/CommandHelper.java

@@ -2,19 +2,89 @@ package ru.simsonic.rscPermissions;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.Map;
+import java.util.logging.Level;
 import org.bukkit.command.Command;
 import org.bukkit.command.CommandSender;
 import org.bukkit.entity.Player;
 import org.bukkit.permissions.PermissionAttachment;
+import ru.simsonic.rscPermissions.DataTypes.DatabaseContents;
 import ru.simsonic.rscPermissions.Importers.PermissionsEx_YAML;
 import ru.simsonic.rscUtilityLibrary.CommandProcessing.CommandAnswerException;
+import ru.simsonic.rscUtilityLibrary.RestartableThread;
 
 public class CommandHelper
 {
-	private final BukkitPluginMain plugin;
+	private final BukkitPluginMain rscp;
 	public CommandHelper(final BukkitPluginMain rscp)
 	{
-		this.plugin = rscp;
+		this.rscp = rscp;
+	}
+	public final RestartableThread threadFetchTablesData = new RestartableThread()
+	{
+		@Override
+		public void run()
+		{
+			final DatabaseContents contents = rscp.connection.retrieveContents();
+			rscp.internalCache.fill(contents);
+			rscp.permissionManager.recalculateOnlinePlayersSync();
+		}
+	};
+	public Thread threadMigrateFromPExSQL(final CommandSender sender)
+	{
+		final Thread result = new Thread()
+		{
+			@Override
+			public void run()
+			{
+				try
+				{
+					setName("rscp:MigrateFromPExSQL");
+					rscp.connection.executeUpdateT("Migrate_from_PermissionsEx");
+					threadFetchTablesData.join();
+					rscp.getServer().getScheduler().runTask(rscp, new Runnable()
+					{
+						@Override
+						public void run()
+						{
+							rscp.formattedMessage(sender, "Migration from PermissionsEx (MySQL backend) done!");
+							rscp.formattedMessage(sender, "Check the latest database row for new data.");
+						}
+					});
+				} catch(InterruptedException ex)
+				{
+					BukkitPluginMain.consoleLog.log(Level.SEVERE, "[rscp] Exception in MigrateFromPExSQL(): {0}", ex);
+				}
+			}
+		};
+		result.start();
+		return result;
+	}
+	public RestartableThread threadInsertExampleRows(final CommandSender sender)
+	{
+		final RestartableThread threadInsertExampleRows = new RestartableThread()
+		{
+			@Override
+			public void run()
+			{
+				Thread.currentThread().setName("rscp:InsertExampleRows");
+				rscp.connection.insertExampleRows();
+				rscp.getServer().getScheduler().runTask(rscp, new Runnable()
+				{
+					@Override
+					public void run()
+					{
+						sender.sendMessage("Database tables were filled with example rows.");
+					}
+				});
+			}
+		};
+		threadInsertExampleRows.start();
+		return threadInsertExampleRows;
+	}
+	public RestartableThread threadFetchTablesData()
+	{
+		threadFetchTablesData.start();
+		return threadFetchTablesData;
 	}
 	public void onCommand(CommandSender sender, Command cmd, String label, String[] args) throws CommandAnswerException
 	{
@@ -40,11 +110,11 @@ public class CommandHelper
 		help.add("/rscp (help) {_LS}-- show these notes");
 		if(help.size() > 0)
 			help.add(0, "{MAGENTA}Usage:");
-		help.add(0, plugin.getDescription().getName() + " v" + plugin.getDescription().getVersion());
+		help.add(0, rscp.getDescription().getName() + " v" + rscp.getDescription().getVersion());
 		help.add(1, "Perfect Superperms manager for multiserver environments");
 		if(sender.hasPermission("rscp.admin"))
-			help.add(2, "{_DS}Current serverId is \'{_LS}" + plugin.getServer().getServerId() + "{_DS}\' (server.properties)");
-		help.add("{_LG}" + plugin.getDescription().getWebsite());
+			help.add(2, "{_DS}Current serverId is \'{_LS}" + rscp.getServer().getServerId() + "{_DS}\' (server.properties)");
+		help.add("{_LG}" + rscp.getDescription().getWebsite());
 		if(args.length == 0)
 			throw new CommandAnswerException(help);
 		switch(args[0].toLowerCase())
@@ -61,9 +131,9 @@ public class CommandHelper
 				{
 					final String mMode = (args.length >= 2) ? args[1] : "default";
 					String mmon = "Maintenance mode enabled";
-					mmon = plugin.getConfig().getString("language.maintenance.locked.default.mmon", mmon);
-					mmon = plugin.getConfig().getString("language.maintenance.locked." + mMode + ".mmon", mmon);
-					plugin.maintenance.setMaintenanceMode(mMode);
+					mmon = rscp.getConfig().getString("language.maintenance.locked.default.mmon", mmon);
+					mmon = rscp.getConfig().getString("language.maintenance.locked." + mMode + ".mmon", mmon);
+					rscp.maintenance.setMaintenanceMode(mMode);
 					throw new CommandAnswerException(mmon);
 				}
 				return;
@@ -72,8 +142,8 @@ public class CommandHelper
 				if(sender.hasPermission("rscp.lock"))
 				{
 					String mmoff = "Maintenance mode disabled";
-					mmoff = plugin.getConfig().getString("language.maintenance.unlocked", mmoff);
-					plugin.maintenance.setMaintenanceMode(null);
+					mmoff = rscp.getConfig().getString("language.maintenance.unlocked", mmoff);
+					rscp.maintenance.setMaintenanceMode(null);
 					throw new CommandAnswerException(mmoff);
 				}
 				break;
@@ -81,7 +151,7 @@ public class CommandHelper
 				/* rscp examplerows */
 				if(sender.hasPermission("rscp.admin"))
 				{
-					plugin.connectionList.threadInsertExampleRows(sender);
+					threadInsertExampleRows(sender);
 					throw new CommandAnswerException("Example rows have been added into database.");
 				}
 				return;
@@ -96,8 +166,8 @@ public class CommandHelper
 								if(args.length == 2)
 									break;
 								// TO DO HERE
-								PermissionsEx_YAML importer_pex = new PermissionsEx_YAML(plugin, args[2]);
-								plugin.connectionList.threadFetchTablesData();
+								PermissionsEx_YAML importer_pex = new PermissionsEx_YAML(rscp, args[2]);
+								threadFetchTablesData();
 								throw new CommandAnswerException(new String[]
 								{
 									"Data has been imported successfully!",
@@ -107,7 +177,7 @@ public class CommandHelper
 									"{_DR}{_B}FAKE :p - all this is undone yet!",
 								});
 							case "pex-sql":
-								plugin.connectionList.threadMigrateFromPExSQL(sender);
+								threadMigrateFromPExSQL(sender);
 								throw new CommandAnswerException("Trying to import PEX database into rscPermissions...");
 						}
 					throw new CommandAnswerException(new String[]
@@ -123,7 +193,7 @@ public class CommandHelper
 				/* rscp fetch */
 				if(sender.hasPermission("rscp.admin.reload"))
 				{
-					plugin.connectionList.threadFetchTablesData();
+					threadFetchTablesData();
 					throw new CommandAnswerException("Tables have been fetched.");
 				}
 				return;
@@ -131,8 +201,8 @@ public class CommandHelper
 				/* rscp reload */
 				if(sender.hasPermission("rscp.admin.reload"))
 				{
-					plugin.getServer().getPluginManager().disablePlugin(plugin);
-					plugin.getServer().getPluginManager().enablePlugin(plugin);
+					rscp.getServer().getPluginManager().disablePlugin(rscp);
+					rscp.getServer().getPluginManager().enablePlugin(rscp);
 					throw new CommandAnswerException("Plugin has been reloaded.");
 				}
 				return;
@@ -162,7 +232,7 @@ public class CommandHelper
 		};
 		if(args.length < 3)
 			throw new CommandAnswerException(help);
-		final Player player = plugin.getServer().getPlayerExact(args[1]);
+		final Player player = rscp.getServer().getPlayerExact(args[1]);
 		if(player == null)
 			throw new CommandAnswerException("Player should be online");
 		final ArrayList<String> list = new ArrayList<>();
@@ -175,7 +245,7 @@ public class CommandHelper
 				{
 					case "permissions":
 						list.add("{MAGENTA}Permission list for {_YL}" + player.getName());
-						final PermissionAttachment pa = plugin.permissionManager.attachments.get(player);
+						final PermissionAttachment pa = rscp.permissionManager.attachments.get(player);
 						if(pa == null)
 							break;
 						final Map<String, Boolean> pv = pa.getPermissions();

src/main/java/ru/simsonic/rscPermissions/ConnectionHelper.java

@@ -1,128 +0,0 @@
-package ru.simsonic.rscPermissions;
-import java.util.logging.Level;
-import org.bukkit.command.CommandSender;
-import org.bukkit.scheduler.BukkitRunnable;
-import ru.simsonic.rscPermissions.Backends.BackendMySQL;
-import ru.simsonic.rscUtilityLibrary.ConnectionMySQL;
-
-public class ConnectionHelper extends BackendMySQL
-{
-	private ConnectionHelper nextInChain = null;
-	public ConnectionHelper(BukkitPluginMain rscp, ConnectionHelper nextInChain)
-	{
-		super(rscp);
-		this.nextInChain = nextInChain;
-	}
-	protected synchronized BackendMySQL findConnectedNode()
-	{
-		for(ConnectionHelper result = this; result != null; result = result.nextInChain)
-			if(result.isConnected())
-				return (BackendMySQL)result;
-		return null;
-	}
-	@Override
-	public void Disconnect()
-	{
-		if(nextInChain != null)
-		{
-			nextInChain.Disconnect();
-			nextInChain = null;
-		}
-		super.Disconnect();
-	}
-	public Thread threadFetchTablesData()
-	{
-		final Thread result = new Thread()
-		{
-			@Override
-			public void run()
-			{
-				// Fetch tables
-				final ConnectionMySQL connection = findConnectedNode();
-				if(connection == null)
-					return;
-				fetchIntoCache(rscp.internalCache);
-				// Update permissions for online players
-				try
-				{
-					Runnable syncTask = new Runnable()
-					{
-						@Override
-						public synchronized void run()
-						{
-							rscp.permissionManager.recalculateOnlinePlayers();
-							notify();
-						}
-					};
-					synchronized(syncTask)
-					{
-						rscp.getServer().getScheduler().runTask(rscp, syncTask);
-						syncTask.wait();
-					}
-				} catch(InterruptedException ex) {
-					BukkitPluginMain.consoleLog.log(Level.SEVERE, "[rscp] Exception in FetchTables(): {0}", ex);
-				}
-				// rscp.cache.calculateStartupPermissions();
-			}
-		};
-		result.start();
-		return result;
-	}
-	public Thread threadInsertExampleRows(final CommandSender sender)
-	{
-		final Thread result = new Thread()
-		{
-			@Override
-			public void run()
-			{
-				setName("InsertExampleRows");
-				final BackendMySQL backend = findConnectedNode();
-				if(backend == null)
-					return;
-				backend.insertExampleRows();
-				rscp.getServer().getScheduler().runTask(rscp, new Runnable()
-				{
-					@Override
-					public void run()
-					{
-						sender.sendMessage("Database tables were filled with example rows.");
-					}
-				});
-			}
-		};
-		result.start();
-		return result;
-	}
-	public Thread threadMigrateFromPExSQL(final CommandSender sender)
-	{
-		final Thread result = new Thread()
-		{
-			@Override
-			public void run()
-			{
-				try
-				{
-					setName("MigrateFromPExSQL");
-					final BackendMySQL backend = findConnectedNode();
-					if(backend == null)
-						return;
-					backend.executeUpdate(loadResourceSQLT("Migrate_from_PermissionsEx"));
-					threadFetchTablesData().join();
-					rscp.getServer().getScheduler().runTask(rscp, new BukkitRunnable()
-					{
-						@Override
-						public void run()
-						{
-							rscp.formattedMessage(sender, "Migration from PermissionsEx (MySQL backend) done!");
-							rscp.formattedMessage(sender, "Check the latest database row for new data.");
-						}
-					});
-				} catch(InterruptedException ex) {
-					BukkitPluginMain.consoleLog.log(Level.SEVERE, "[rscp] Exception in MigrateFromPExSQL(): {0}", ex);
-				}
-			}
-		};
-		result.start();
-		return result;
-	}
-}

src/main/java/ru/simsonic/rscPermissions/DataTypes/DatabaseContents.java

@@ -0,0 +1,36 @@
+package ru.simsonic.rscPermissions.DataTypes;
+import java.util.ArrayList;
+
+public class DatabaseContents
+{
+	public RowEntity      entities[];
+	public RowPermission  permissions[];
+	public RowInheritance inheritance[];
+	public void normalize()
+	{
+		// Entities
+		final ArrayList<RowEntity> listE = new ArrayList<>();
+		if(entities != null)
+			for(RowEntity rowE : entities)
+			{
+				listE.add(rowE);
+			}
+		entities = listE.toArray(new RowEntity[listE.size()]);
+		// Permissions
+		final ArrayList<RowPermission> listP = new ArrayList<>();
+		if(permissions != null)
+			for(RowPermission rowP : permissions)
+			{
+				listP.add(rowP);
+			}
+		permissions = listP.toArray(new RowPermission[listP.size()]);
+		// Inheritance
+		final ArrayList<RowInheritance> listI = new ArrayList<>();
+		if(inheritance != null)
+			for(RowInheritance rowI : inheritance)
+			{
+				listI.add(rowI);
+			}
+		inheritance = listI.toArray(new RowInheritance[listI.size()]);
+	}
+}

src/main/java/ru/simsonic/rscPermissions/InternalCache/AbstractPermissionsCache.java

@@ -1,11 +0,0 @@
-package ru.simsonic.rscPermissions.InternalCache;
-import ru.simsonic.rscPermissions.DataTypes.RowEntity;
-import ru.simsonic.rscPermissions.DataTypes.RowInheritance;
-import ru.simsonic.rscPermissions.DataTypes.RowPermission;
-
-public interface AbstractPermissionsCache
-{
-	public int ImportEntities(RowEntity[] rows);
-	public int ImportPermissions(RowPermission[] rows);
-	public int ImportInheritance(RowInheritance[] rows);
-}

src/main/java/ru/simsonic/rscPermissions/InternalCache/InternalCache.java

@@ -9,8 +9,9 @@ import ru.simsonic.rscPermissions.DataTypes.RowInheritance;
 import ru.simsonic.rscPermissions.DataTypes.RowPermission;
 import ru.simsonic.rscPermissions.BukkitPluginMain;
 import ru.simsonic.rscPermissions.API.Settings;
+import ru.simsonic.rscPermissions.DataTypes.DatabaseContents;
 
-public class InternalCache implements AbstractPermissionsCache
+public class InternalCache
 {
 	protected final BukkitPluginMain plugin;
 	public InternalCache(BukkitPluginMain rscp)
@@ -177,8 +178,13 @@ public class InternalCache implements AbstractPermissionsCache
 			? row.destination.isRegionApplicable(params.destRegions, instantiator)
 			: false;
 	}
-	@Override
-	public synchronized int ImportEntities(RowEntity[] rows)
+	public synchronized void fill(DatabaseContents contents)
+	{
+		importEntities(contents.entities);
+		importPermissions(contents.permissions);
+		importInheritance(contents.inheritance);
+	}
+	private int importEntities(RowEntity[] rows)
 	{
 		entities_g.clear();
 		entities_u.clear();
@@ -193,8 +199,7 @@ public class InternalCache implements AbstractPermissionsCache
 		}
 		return entities_g.size() + entities_u.size();
 	}
-	@Override
-	public synchronized int ImportPermissions(RowPermission[] rows)
+	private int importPermissions(RowPermission[] rows)
 	{
 		permissions_p2g.clear();
 		permissions_p2u.clear();
@@ -209,8 +214,7 @@ public class InternalCache implements AbstractPermissionsCache
 		}
 		return permissions_p2g.size() + permissions_p2u.size();
 	}
-	@Override
-	public synchronized int ImportInheritance(RowInheritance[] rows)
+	private int importInheritance(RowInheritance[] rows)
 	{
 		inheritance_g2g.clear();
 		inheritance_g2u.clear();
@@ -225,4 +229,13 @@ public class InternalCache implements AbstractPermissionsCache
 		}
 		return inheritance_g2g.size() + inheritance_g2u.size();
 	}
+	public synchronized void clear()
+	{
+		entities_g.clear();
+		entities_u.clear();
+		permissions_p2g.clear();
+		permissions_p2u.clear();
+		inheritance_g2g.clear();
+		inheritance_g2u.clear();
+	}
 }

src/main/resources/config.yml

@@ -10,18 +10,10 @@ settings:
   integration:
     worldguard: true
     residence: true
-servers:
-- nodename: db-primary-remote
-  database: localhost:3306/minecraft
-  username: user1
-  password: pass1
-  prefixes: rscp_
-  workmode: fullaccess
-- nodename: db-secondary-local-replication
-  database: other.server:3306/replication
-  username: user2
-  password: pass2
-  prefixes: rscp_
-  workmode: none
+  connection:
+    database: localhost:3306/minecraft
+    username: user1
+    password: pass1
+    prefixes: rscp_
 internal:
-  version: 1
+  version: 4

src/main/resources/sqlt/Cleanup_tables.sqlt

@@ -1,21 +1,13 @@
-DELETE FROM
-	`{DATABASE}`.`{PREFIX}entities`
+DELETE FROM `{DATABASE}`.`{PREFIX}entities`
 WHERE
 	((`prefix` = '' OR `prefix` IS NULL) AND (`suffix` = '' OR `suffix` IS NULL))
 	OR
 	`lifetime` < CURRENT_TIMESTAMP;
 
-DELETE FROM
-	`{DATABASE}`.`{PREFIX}permissions`
+DELETE FROM `{DATABASE}`.`{PREFIX}permissions`
 WHERE
 	`lifetime` < CURRENT_TIMESTAMP;
 
-DELETE FROM
-	`{DATABASE}`.`{PREFIX}inheritance`
+DELETE FROM `{DATABASE}`.`{PREFIX}inheritance`
 WHERE
 	`lifetime` < CURRENT_TIMESTAMP;
-
-DELETE FROM
-	`{DATABASE}`.`{PREFIX}ladders`
-WHERE
-	`climber_type` = b'1' AND `rank` = 0;

src/main/resources/sqlt/Initialize_main_v1.sqlt

@@ -1,10 +1,10 @@
 CREATE TABLE IF NOT EXISTS `{DATABASE}`.`{PREFIX}entities` (
 	`id`          INT(10) UNSIGNED NOT NULL AUTO_INCREMENT,
-	`entity`      VARCHAR(64) NOT NULL,
-	`entity_type` TINYINT(1)  NOT NULL,
-	`prefix`      VARCHAR(48) DEFAULT NULL,
-	`suffix`      VARCHAR(48) DEFAULT NULL,
-   `lifetime`    TIMESTAMP NULL DEFAULT NULL,
+	`entity`      VARCHAR(64)      NOT NULL,
+	`entity_type` TINYINT(1)       NOT NULL,
+	`prefix`      VARCHAR(48)               DEFAULT NULL,
+	`suffix`      VARCHAR(48)               DEFAULT NULL,
+   `lifetime`    TIMESTAMP            NULL DEFAULT NULL,
 	PRIMARY KEY (`id`),
 	UNIQUE KEY `id_UNIQUE` (`id`),
 	UNIQUE KEY `entity_UNIQUE` (`entity`, `entity_type`)
@@ -12,13 +12,13 @@ CREATE TABLE IF NOT EXISTS `{DATABASE}`.`{PREFIX}entities` (
 
 CREATE TABLE IF NOT EXISTS `{DATABASE}`.`{PREFIX}permissions` (
 	`id`           INT(10) UNSIGNED NOT NULL AUTO_INCREMENT,
-	`entity`       VARCHAR(64)  NOT NULL,
-	`entity_type`  TINYINT(1)   NOT NULL,
-	`permission`   VARCHAR(255) NOT NULL,
-	`value`        BIT(1)       NOT NULL DEFAULT b'1',
-	`destination`  VARCHAR(255) NOT NULL DEFAULT '',
-	`expirience`   SMALLINT(6)  NOT NULL DEFAULT 0,
-	`lifetime`     TIMESTAMP NULL DEFAULT NULL,
+	`entity`       VARCHAR(64)      NOT NULL,
+	`entity_type`  TINYINT(1)       NOT NULL,
+	`permission`   VARCHAR(255)     NOT NULL,
+	`value`        BIT(1)           NOT NULL DEFAULT b'1',
+	`destination`  VARCHAR(255)     NOT NULL DEFAULT '',
+	`expirience`   SMALLINT(6)      NOT NULL DEFAULT 0,
+	`lifetime`     TIMESTAMP            NULL DEFAULT NULL,
 	PRIMARY KEY (`id`),
 	UNIQUE KEY `id_UNIQUE` (`id`),
 	UNIQUE KEY `permission_UNIQUE` (`entity`, `entity_type`, `permission`, `destination`, `expirience`)
@@ -26,32 +26,19 @@ CREATE TABLE IF NOT EXISTS `{DATABASE}`.`{PREFIX}permissions` (
 
 CREATE TABLE IF NOT EXISTS `{DATABASE}`.`{PREFIX}inheritance` (
 	`id`                   INT(10) UNSIGNED NOT NULL AUTO_INCREMENT,
-	`entity`               VARCHAR(64)  NOT NULL,
-	`parent`               VARCHAR(64)  NOT NULL,
-	`inheritance_type`     TINYINT(1)   NOT NULL,
-	`inheritance_priority` SMALLINT(6)  NOT NULL DEFAULT '20',
-	`destination`          VARCHAR(255) NOT NULL DEFAULT '',
-	`expirience`           SMALLINT(6)  NOT NULL DEFAULT 0,
-	`lifetime`             TIMESTAMP NULL DEFAULT NULL,
+	`entity`               VARCHAR(64)      NOT NULL,
+	`parent`               VARCHAR(64)      NOT NULL,
+	`inheritance_type`     TINYINT(1)       NOT NULL,
+	`inheritance_priority` SMALLINT(6)      NOT NULL DEFAULT '20',
+	`destination`          VARCHAR(255)     NOT NULL DEFAULT '',
+	`expirience`           SMALLINT(6)      NOT NULL DEFAULT 0,
+	`lifetime`             TIMESTAMP            NULL DEFAULT NULL,
 	PRIMARY KEY (`id`, `entity`),
 	UNIQUE KEY `id_UNIQUE` (`id`),
 	UNIQUE KEY `inheritance_UNIQUE` (`entity`, `parent`, `inheritance_type`, `destination`, `expirience`)
 ) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET='utf8' COLLATE 'utf8_general_ci';
 
-CREATE TABLE IF NOT EXISTS `{DATABASE}`.`{PREFIX}servers` (
-	`serverid`                       VARCHAR(48) NOT NULL,
-	`plugin_version`                 VARCHAR(16) DEFAULT NULL,
-	`settings_default-group`         VARCHAR(64) NOT NULL DEFAULT 'Default',
-	`settings_treat-asterisk-as-op`  BIT(1) NOT NULL DEFAULT b'1',
-	`settings_auto-reload-delay-sec` INT(10) UNSIGNED NOT NULL DEFAULT '900',
-	`settings_maintenance-mode`      VARCHAR(64) DEFAULT NULL,
-	`settings_enable-rewards`        BIT(1) NOT NULL DEFAULT b'0',
-	`internal_version`               TINYINT(2) UNSIGNED NOT NULL DEFAULT '1',
-	PRIMARY KEY (`serverid`),
-	UNIQUE KEY `serverid_UNIQUE` (`serverid`)
-) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET='utf8' COLLATE 'utf8_general_ci';
-
-/* Merged updates 0.1a -> 0.5.9b -> 0.6b -> 0.8.15b */
+/* Merged updates 0.1a -> 0.5.9b -> 0.6b -> 0.8.15b -> 0.9.2b */
 
 ALTER IGNORE TABLE `{DATABASE}`.`{PREFIX}entities`
 	COLLATE 'utf8_general_ci';
@@ -72,5 +59,5 @@ ALTER IGNORE TABLE `{DATABASE}`.`{PREFIX}inheritance`
 ALTER IGNORE TABLE `{DATABASE}`.`{PREFIX}servers`
 	COLLATE 'utf8_general_ci';
 
-ALTER TABLE `{DATABASE}`.`{PREFIX}entities`
+ALTER IGNORE TABLE `{DATABASE}`.`{PREFIX}entities`
 	ADD COLUMN `lifetime` TIMESTAMP NULL DEFAULT NULL AFTER `suffix`;

src/main/resources/sqlt/Migrate_from_PermissionsEx.sqlt

@@ -54,4 +54,4 @@ INSERT INTO `{DATABASE}`.`{PREFIX}inheritance`
 	WHERE `permission` LIKE 'group-%-until'
 	ORDER BY `type` ASC, `parent` ASC, `name` ASC
 ON DUPLICATE KEY UPDATE
-	`lifetime` = VALUES(`lifetime`);
+	`lifetime` = VALUES(`lifetime`);

src/main/resources/sqlt/Update_entity_text.sqlt

@@ -3,4 +3,4 @@ INSERT INTO
 VALUES
 	('{ENTITY}', b'{ENTITY_TYPE}', {TEXT})
 ON DUPLICATE KEY UPDATE
-	`{TEXT_TYPE}` = VALUES(`{TEXT_TYPE}`);
+	`{TEXT_TYPE}` = VALUES(`{TEXT_TYPE}`);