Major schedules & DB refactor

Refactored many calls for TimerManager's schedules throughout the source.
Switched all tables using MyISAM to InnoDB: on a multi-threaded environment such as this, table-locking is an instant no-no, and other gains MyISAM would have over InnoDB are minimal.
Altered getConnection() to properly throw an exception (good practice!) in case of no available connection instead of a mere null.

src/net/server/channel/handlers/BBSOperationHandler.java

@@ -297,7 +297,7 @@ public final class BBSOperationHandler extends AbstractMaplePacketHandler {
         if (mc.getGuildId() <= 0) {
             return;
         }
-        Connection con = null;
+        Connection con;
         try {
             con = DatabaseConnection.getConnection();
             PreparedStatement ps2;

src/net/server/channel/handlers/EnterCashShopHandler.java

@@ -65,6 +65,7 @@ public class EnterCashShopHandler extends AbstractMaplePacketHandler {
             mc.cancelDiseaseExpireTask();
             mc.cancelSkillCooldownTask();
             mc.cancelExpirationTask();
+            mc.cancelQuestExpirationTask();
 
             c.announce(MaplePacketCreator.openCashShop(c, false));
             c.announce(MaplePacketCreator.showCashInventory(c));

src/net/server/channel/handlers/EnterMTSHandler.java

@@ -74,6 +74,7 @@ public final class EnterMTSHandler extends AbstractMaplePacketHandler {
         chr.cancelDiseaseExpireTask();
         chr.cancelSkillCooldownTask();
         chr.cancelExpirationTask();
+        chr.cancelQuestExpirationTask();
         
         chr.saveToDB();
         chr.getMap().removePlayer(c.getPlayer());

src/net/server/channel/handlers/MTSHandler.java

@@ -343,15 +343,15 @@ public final class MTSHandler extends AbstractMaplePacketHandler {
                 }
             } else if (op == 9) { //add to cart
                 int id = slea.readInt(); //id of the item
-                Connection con = null;
+                Connection con;
                 try {
                     con = DatabaseConnection.getConnection();
-                    try (PreparedStatement ps1 = con.prepareStatement("SELECT * FROM mts_items WHERE id = ? AND seller <> ?")) {
-                        ps1.setInt(1, id);//Previene que agregues al cart tus propios items
+                    try (PreparedStatement ps1 = con.prepareStatement("SELECT id FROM mts_items WHERE id = ? AND seller <> ?")) {
+                        ps1.setInt(1, id);  //Dummy query, prevents adding to cart self owned items
                         ps1.setInt(2, c.getPlayer().getId());
                         try (ResultSet rs1 = ps1.executeQuery()) {
                             if (rs1.next()) {
-                                PreparedStatement ps = con.prepareStatement("SELECT * FROM mts_cart WHERE cid = ? AND itemid = ?");
+                                PreparedStatement ps = con.prepareStatement("SELECT cid FROM mts_cart WHERE cid = ? AND itemid = ?");
                                 ps.setInt(1, c.getPlayer().getId());
                                 ps.setInt(2, id);
                                 try (ResultSet rs = ps.executeQuery()) {

src/net/server/channel/handlers/PlayerLoggedinHandler.java

@@ -267,6 +267,7 @@ public final class PlayerLoggedinHandler extends AbstractMaplePacketHandler {
         player.diseaseExpireTask();
         player.skillCooldownTask();
         player.expirationTask();
+        player.questExpirationTask();
         if (GameConstants.hasSPTable(player.getJob()) && player.getJob().getId() != 2001) {
                 player.createDragon();
         }