Making the database stuff abstract:

This will make it easier to add support for MongoDB

PlotSquared/src/com/intellectualcrafters/plot/PlotMain.java

@@ -17,6 +17,7 @@ import com.intellectualcrafters.plot.commands.MainCommand;
 import com.intellectualcrafters.plot.database.DBFunc;
 import com.intellectualcrafters.plot.database.MySQL;
 import com.intellectualcrafters.plot.database.PlotMeConverter;
+import com.intellectualcrafters.plot.database.SQLManager;
 import com.intellectualcrafters.plot.database.SQLite;
 import com.intellectualcrafters.plot.events.PlayerTeleportToPlotEvent;
 import com.intellectualcrafters.plot.events.PlotDeleteEvent;
@@ -572,6 +573,7 @@ public class PlotMain extends JavaPlugin {
 
         // Use mysql?
 		if (Settings.DB.USE_MYSQL) {
+		    DBFunc.dbManager = new SQLManager();
 			try {
 				mySQL =
 						new MySQL(this, Settings.DB.HOST_NAME, Settings.DB.PORT, Settings.DB.DATABASE, Settings.DB.USER, Settings.DB.PASSWORD);
@@ -596,7 +598,7 @@ public class PlotMain extends JavaPlugin {
 					}
 				}
 			}
-			catch (ClassNotFoundException | SQLException e) {
+			catch (Exception e) {
 				Logger.add(LogLevel.DANGER, "MySQL connection failed.");
 				sendConsoleSenderMessage("&c[Plots] MySQL is not setup correctly. The plugin will disable itself.");
 				if (config==null || config.getBoolean("debug")) {
@@ -614,11 +616,12 @@ public class PlotMain extends JavaPlugin {
         // TODO: Implement mongo
 		else
 			if (Settings.DB.USE_MONGO) {
+//			    DBFunc.dbManager = new MongoManager();
 				sendConsoleSenderMessage(C.PREFIX.s() + "MongoDB is not yet implemented");
 			}
-            // Use Sqlite :D<3
 			else
 				if (Settings.DB.USE_SQLITE) {
+				    DBFunc.dbManager = new SQLManager();
 					try {
 						connection = new SQLite(this, Settings.DB.SQLITE_DB + ".db").openConnection();
 						{
@@ -641,7 +644,7 @@ public class PlotMain extends JavaPlugin {
 							}
 						}
 					}
-					catch (ClassNotFoundException | SQLException e) {
+					catch (Exception e) {
 						Logger.add(LogLevel.DANGER, "SQLite connection failed");
 						sendConsoleSenderMessage(C.PREFIX.s()
 								+ "&cFailed to open SQLite connection. The plugin will disable itself.");

PlotSquared/src/com/intellectualcrafters/plot/database/AbstractDB.java

@@ -0,0 +1,152 @@
+/*
+ * Copyright (c) IntellectualCrafters - 2014. You are not allowed to distribute
+ * and/or monetize any of our intellectual property. IntellectualCrafters is not
+ * affiliated with Mojang AB. Minecraft is a trademark of Mojang AB.
+ * 
+ * >> File = DBFunc.java >> Generated by: Citymonstret at 2014-08-09 01:43
+ */
+
+package com.intellectualcrafters.plot.database;
+
+import java.sql.SQLException;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.UUID;
+
+import org.bukkit.OfflinePlayer;
+
+import com.intellectualcrafters.plot.Flag;
+import com.intellectualcrafters.plot.Plot;
+import com.intellectualcrafters.plot.PlotId;
+
+/**
+ * @author Citymonstret
+ */
+public abstract class AbstractDB {
+
+    // TODO MongoDB @Brandon
+
+    /**
+     * Set Plot owner
+     * 
+     * @param plot
+     * @param uuid
+     */
+    public abstract void setOwner(final Plot plot, final UUID uuid);
+
+    public abstract void createAllSettingsAndHelpers(ArrayList<Plot> plots);
+
+    /**
+     * Create a plot
+     * 
+     * @param plots
+     */
+    public abstract void createPlots(ArrayList<Plot> plots);
+
+    /**
+     * Create a plot
+     * 
+     * @param plot
+     */
+    public abstract void createPlot(Plot plot);
+
+    /**
+     * Create tables
+     * 
+     * @throws SQLException
+     */
+    public abstract void createTables(String database, boolean add_constraint) throws Exception;
+
+    /**
+     * Delete a plot
+     * 
+     * @param plot
+     */
+    public abstract void delete(final String world, final Plot plot);
+
+    /**
+     * Create plot settings
+     * 
+     * @param id
+     * @param plot
+     */
+    public abstract void createPlotSettings(final int id, final Plot plot);
+
+    public abstract int getId(String world, PlotId id2);
+
+    /**
+     * @return
+     */
+    public abstract HashMap<String, HashMap<PlotId, Plot>> getPlots();
+
+
+    public abstract void setMerged(final String world, final Plot plot, final boolean[] merged);
+
+    public abstract void setFlags(final String world, final Plot plot, final Flag[] flags);
+
+    /**
+     * @param plot
+     * @param alias
+     */
+    public abstract void setAlias(final String world, final Plot plot, final String alias);
+
+    public abstract void purge(final String world, final PlotId id);
+
+    public abstract void purge(final String world);
+    
+    /**
+     * @param plot
+     * @param position
+     */
+    public abstract void setPosition(final String world, final Plot plot, final String position);
+
+    /**
+     * @param id
+     * @return
+     */
+    public abstract HashMap<String, Object> getSettings(int id);
+
+    /**
+     *
+     */
+    public UUID everyone = UUID.fromString("1-1-3-3-7");
+
+
+    /**
+     * @param plot
+     * @param player
+     */
+    public abstract void removeHelper(final String world, final Plot plot, final OfflinePlayer player);
+
+    /**
+     * @param plot
+     * @param player
+     */
+    public abstract void removeTrusted(final String world, final Plot plot, final OfflinePlayer player);
+
+    /**
+     * @param plot
+     * @param player
+     */
+    public abstract void setHelper(final String world, final Plot plot, final OfflinePlayer player);
+
+    /**
+     * @param plot
+     * @param player
+     */
+    public abstract void setTrusted(final String world, final Plot plot, final OfflinePlayer player);
+
+    /**
+     * @param plot
+     * @param player
+     */
+    public abstract void removeDenied(final String world, final Plot plot, final OfflinePlayer player);
+
+    /**
+     * @param plot
+     * @param player
+     */
+    public abstract void setDenied(final String world, final Plot plot, final OfflinePlayer player);
+
+    public abstract double getRatings(final Plot plot);
+}