Reduce redundant saves for ender chests as well

While they don't suffer the same owner-related issues that player inventories did, there's no need to save so many times.

src/main/java/com/lishid/openinv/OpenInv.java

@@ -165,15 +165,6 @@ public class OpenInv extends JavaPlugin {
         return getConfig().getBoolean("NotifyAnyChest", true);
     }
 
-    public boolean getPlayerItemOpenInvStatus(OfflinePlayer player) {
-        return getConfig().getBoolean("ItemOpenInv." + getPlayerLoader().getPlayerDataID(player) + ".toggle", false);
-    }
-
-    public void setPlayerItemOpenInvStatus(OfflinePlayer player, boolean status) {
-        getConfig().set("ItemOpenInv." + getPlayerLoader().getPlayerDataID(player) + ".toggle", status);
-        saveConfig();
-    }
-
     public boolean getPlayerSilentChestStatus(OfflinePlayer player) {
         return getConfig().getBoolean("SilentChest." + getPlayerLoader().getPlayerDataID(player) + ".toggle", false);
     }

src/main/java/com/lishid/openinv/OpenInvPlayerListener.java

@@ -27,6 +27,7 @@ import org.bukkit.event.block.Action;
 import org.bukkit.event.player.PlayerInteractEvent;
 import org.bukkit.event.player.PlayerJoinEvent;
 import org.bukkit.event.player.PlayerQuitEvent;
+import org.bukkit.scheduler.BukkitRunnable;
 
 import com.lishid.openinv.internal.ISpecialEnderChest;
 import com.lishid.openinv.internal.ISpecialPlayerInventory;
@@ -39,19 +40,25 @@ public class OpenInvPlayerListener implements Listener {
         this.plugin = plugin;
     }
 
-    @EventHandler(priority = EventPriority.LOWEST)
+    @EventHandler(priority = EventPriority.MONITOR)
-    public void onPlayerJoin(PlayerJoinEvent event) {
+    public void onPlayerJoin(final PlayerJoinEvent event) {
-        ISpecialPlayerInventory inventory = plugin.getInventoryFor(event.getPlayer());
+        new BukkitRunnable() {
-
+            @Override
-        if (inventory != null) {
+            public void run() {
-            inventory.setPlayerOnline(event.getPlayer());
+                if (!event.getPlayer().isOnline()) {
-        }
+                    return;
-
+                }
-        ISpecialEnderChest chest = plugin.getEnderChestFor(event.getPlayer());
+                ISpecialPlayerInventory inventory = plugin.getInventoryFor(event.getPlayer());
-
+                if (inventory != null) {
-        if (chest != null) {
+                    inventory.setPlayerOnline(event.getPlayer());
-            chest.setPlayerOnline(event.getPlayer());
+                    event.getPlayer().updateInventory();
-        }
+                }
+                ISpecialEnderChest chest = plugin.getEnderChestFor(event.getPlayer());
+                if (chest != null) {
+                    chest.setPlayerOnline(event.getPlayer());
+                }
+            }
+        }.runTask(plugin);
     }
 
     @EventHandler(priority = EventPriority.MONITOR)

src/main/java/com/lishid/openinv/internal/IPlayerDataManager.java

@@ -19,8 +19,15 @@ package com.lishid.openinv.internal;
 import org.bukkit.OfflinePlayer;
 import org.bukkit.entity.Player;
 
-public interface IPlayerDataManager {
+public abstract class IPlayerDataManager {
-    public Player loadPlayer(OfflinePlayer offline);
+    public final Player loadPlayer(OfflinePlayer offline) {
+        if (offline.isOnline()) {
+            return offline.getPlayer();
+        }
+        return this.loadOfflinePlayer(offline);
+    }
 
-    public String getPlayerDataID(OfflinePlayer player);
+    protected abstract Player loadOfflinePlayer(OfflinePlayer offline);
+
+    public abstract String getPlayerDataID(OfflinePlayer player);
 }

src/main/java/com/lishid/openinv/internal/ISpecialEnderChest.java

@@ -23,9 +23,9 @@ public interface ISpecialEnderChest {
 
     public Inventory getBukkitInventory();
 
-    public boolean inventoryRemovalCheck();
+    public boolean inventoryRemovalCheck(boolean save);
 
-    public void setPlayerOnline(Player p);
+    public void setPlayerOnline(Player player);
 
     /**
      * Sets the Player associated with this ISpecialEnderChest offline.

src/main/java/com/lishid/openinv/internal/ISpecialPlayerInventory.java

@@ -23,7 +23,7 @@ public interface ISpecialPlayerInventory {
 
     public Inventory getBukkitInventory();
 
-    public boolean inventoryRemovalCheck();
+    public boolean inventoryRemovalCheck(boolean save);
 
     public void setPlayerOnline(Player player);
 

src/main/java/com/lishid/openinv/internal/v1_4_5/PlayerDataManager.java

@@ -29,10 +29,10 @@ import net.minecraft.server.v1_4_5.MinecraftServer;
 
 import org.bukkit.craftbukkit.v1_4_5.CraftServer;
 
-public class PlayerDataManager implements IPlayerDataManager {
+public class PlayerDataManager extends IPlayerDataManager {
 
     @Override
-    public Player loadPlayer(OfflinePlayer offline) {
+    public Player loadOfflinePlayer(OfflinePlayer offline) {
         MinecraftServer server = ((CraftServer) Bukkit.getServer()).getServer();
 
         // Create an entity to load the player data

src/main/java/com/lishid/openinv/internal/v1_4_5/SpecialEnderChest.java

@@ -41,7 +41,7 @@ import org.bukkit.craftbukkit.v1_4_5.inventory.CraftInventory;
 public class SpecialEnderChest extends InventorySubcontainer implements IInventory, ISpecialEnderChest {
     public List<HumanEntity> transaction = new ArrayList<HumanEntity>();
     public boolean playerOnline = false;
-    private final CraftPlayer owner;
+    private CraftPlayer owner;
     private final InventoryEnderChest enderChest;
     private int maxStack = MAX_STACK;
     private final CraftInventory inventory = new CraftInventory(this);
@@ -60,22 +60,25 @@ public class SpecialEnderChest extends InventorySubcontainer implements IInvento
     }
 
     @Override
-    public boolean inventoryRemovalCheck() {
+    public boolean inventoryRemovalCheck(boolean save) {
-        owner.saveData();
+        boolean offline = transaction.isEmpty() && !playerOnline;
-        return transaction.isEmpty() && !playerOnline;
+        if (offline && save) {
+            owner.saveData();
+        }
+        return offline;
     }
 
     @Override
-    public void setPlayerOnline(Player p) {
+    public void setPlayerOnline(Player player) {
         if (!playerOnline) {
             try {
-                InventoryEnderChest playerEnderChest = ((CraftPlayer) p).getHandle().getEnderChest();
+                owner = (CraftPlayer) player;
+                InventoryEnderChest playerEnderChest = owner.getHandle().getEnderChest();
                 Field field = playerEnderChest.getClass().getField("items");
                 field.setAccessible(true);
                 field.set(playerEnderChest, this.items);
             }
             catch (Exception e) {}
-            p.saveData();
             playerOnline = true;
         }
     }
@@ -83,7 +86,7 @@ public class SpecialEnderChest extends InventorySubcontainer implements IInvento
     @Override
     public boolean setPlayerOffline() {
         playerOnline = false;
-        return this.inventoryRemovalCheck();
+        return inventoryRemovalCheck(false);
     }
 
     @Override
@@ -99,7 +102,7 @@ public class SpecialEnderChest extends InventorySubcontainer implements IInvento
     @Override
     public void onClose(CraftHumanEntity who) {
         transaction.remove(who);
-        this.inventoryRemovalCheck();
+        this.inventoryRemovalCheck(true);
     }
 
     @Override

src/main/java/com/lishid/openinv/internal/v1_4_5/SpecialPlayerInventory.java

@@ -50,18 +50,21 @@ public class SpecialPlayerInventory extends PlayerInventory implements ISpecialP
     }
 
     @Override
-    public boolean inventoryRemovalCheck() {
+    public boolean inventoryRemovalCheck(boolean save) {
-        owner.saveData();
+        boolean offline = transaction.isEmpty() && !playerOnline;
-        return transaction.isEmpty() && !playerOnline;
+        if (offline && save) {
+            owner.saveData();
+        }
+        return offline;
     }
 
     @Override
     public void setPlayerOnline(Player player) {
         if (!playerOnline) {
-            CraftPlayer p = (CraftPlayer) player;
+            owner = (CraftPlayer) player;
-            p.getHandle().inventory.items = this.items;
+            this.player = owner.getHandle();
-            p.getHandle().inventory.armor = this.armor;
+            this.player.inventory.items = this.items;
-            p.saveData();
+            this.player.inventory.armor = this.armor;
             playerOnline = true;
         }
     }
@@ -69,13 +72,13 @@ public class SpecialPlayerInventory extends PlayerInventory implements ISpecialP
     @Override
     public boolean setPlayerOffline() {
         playerOnline = false;
-        return this.inventoryRemovalCheck();
+        return this.inventoryRemovalCheck(false);
     }
 
     @Override
     public void onClose(CraftHumanEntity who) {
         super.onClose(who);
-        this.inventoryRemovalCheck();
+        this.inventoryRemovalCheck(true);
     }
 
     @Override

src/main/java/com/lishid/openinv/internal/v1_4_6/PlayerDataManager.java

@@ -29,10 +29,10 @@ import net.minecraft.server.v1_4_6.PlayerInteractManager;
 
 import org.bukkit.craftbukkit.v1_4_6.CraftServer;
 
-public class PlayerDataManager implements IPlayerDataManager {
+public class PlayerDataManager extends IPlayerDataManager {
 
     @Override
-    public Player loadPlayer(OfflinePlayer offline) {
+    public Player loadOfflinePlayer(OfflinePlayer offline) {
         MinecraftServer server = ((CraftServer) Bukkit.getServer()).getServer();
 
         // Create an entity to load the player data

src/main/java/com/lishid/openinv/internal/v1_4_6/SpecialEnderChest.java

@@ -41,7 +41,7 @@ import org.bukkit.craftbukkit.v1_4_6.inventory.CraftInventory;
 public class SpecialEnderChest extends InventorySubcontainer implements IInventory, ISpecialEnderChest {
     public List<HumanEntity> transaction = new ArrayList<HumanEntity>();
     public boolean playerOnline = false;
-    private final CraftPlayer owner;
+    private CraftPlayer owner;
     private final InventoryEnderChest enderChest;
     private int maxStack = MAX_STACK;
     private final CraftInventory inventory = new CraftInventory(this);
@@ -60,22 +60,25 @@ public class SpecialEnderChest extends InventorySubcontainer implements IInvento
     }
 
     @Override
-    public boolean inventoryRemovalCheck() {
+    public boolean inventoryRemovalCheck(boolean save) {
-        owner.saveData();
+        boolean offline = transaction.isEmpty() && !playerOnline;
-        return transaction.isEmpty() && !playerOnline;
+        if (offline && save) {
+            owner.saveData();
+        }
+        return offline;
     }
 
     @Override
-    public void setPlayerOnline(Player p) {
+    public void setPlayerOnline(Player player) {
         if (!playerOnline) {
             try {
-                InventoryEnderChest playerEnderChest = ((CraftPlayer) p).getHandle().getEnderChest();
+                owner = (CraftPlayer) player;
+                InventoryEnderChest playerEnderChest = owner.getHandle().getEnderChest();
                 Field field = playerEnderChest.getClass().getField("items");
                 field.setAccessible(true);
                 field.set(playerEnderChest, this.items);
             }
             catch (Exception e) {}
-            p.saveData();
             playerOnline = true;
         }
     }
@@ -83,7 +86,7 @@ public class SpecialEnderChest extends InventorySubcontainer implements IInvento
     @Override
     public boolean setPlayerOffline() {
         playerOnline = false;
-        return inventoryRemovalCheck();
+        return inventoryRemovalCheck(false);
     }
 
     @Override
@@ -99,7 +102,7 @@ public class SpecialEnderChest extends InventorySubcontainer implements IInvento
     @Override
     public void onClose(CraftHumanEntity who) {
         transaction.remove(who);
-        this.inventoryRemovalCheck();
+        this.inventoryRemovalCheck(true);
     }
 
     @Override

src/main/java/com/lishid/openinv/internal/v1_4_6/SpecialPlayerInventory.java

@@ -50,18 +50,21 @@ public class SpecialPlayerInventory extends PlayerInventory implements ISpecialP
     }
 
     @Override
-    public boolean inventoryRemovalCheck() {
+    public boolean inventoryRemovalCheck(boolean save) {
-        owner.saveData();
+        boolean offline = transaction.isEmpty() && !playerOnline;
-        return transaction.isEmpty() && !playerOnline;
+        if (offline && save) {
+            owner.saveData();
+        }
+        return offline;
     }
 
     @Override
     public void setPlayerOnline(Player player) {
         if (!playerOnline) {
-            CraftPlayer p = (CraftPlayer) player;
+            owner = (CraftPlayer) player;
-            p.getHandle().inventory.items = this.items;
+            this.player = owner.getHandle();
-            p.getHandle().inventory.armor = this.armor;
+            this.player.inventory.items = this.items;
-            p.saveData();
+            this.player.inventory.armor = this.armor;
             playerOnline = true;
         }
     }
@@ -69,13 +72,13 @@ public class SpecialPlayerInventory extends PlayerInventory implements ISpecialP
     @Override
     public boolean setPlayerOffline() {
         playerOnline = false;
-        return this.inventoryRemovalCheck();
+        return this.inventoryRemovalCheck(false);
     }
 
     @Override
     public void onClose(CraftHumanEntity who) {
         super.onClose(who);
-        this.inventoryRemovalCheck();
+        this.inventoryRemovalCheck(true);
     }
 
     @Override

src/main/java/com/lishid/openinv/internal/v1_4_R1/PlayerDataManager.java

@@ -30,10 +30,10 @@ import net.minecraft.server.v1_4_R1.PlayerInteractManager;
 import org.bukkit.craftbukkit.v1_4_R1.CraftServer;
 
 
-public class PlayerDataManager implements IPlayerDataManager {
+public class PlayerDataManager extends IPlayerDataManager {
 
     @Override
-    public Player loadPlayer(OfflinePlayer offline) {
+    public Player loadOfflinePlayer(OfflinePlayer offline) {
         MinecraftServer server = ((CraftServer) Bukkit.getServer()).getServer();
 
         // Create an entity to load the player data

src/main/java/com/lishid/openinv/internal/v1_4_R1/SpecialEnderChest.java

@@ -41,7 +41,7 @@ import org.bukkit.craftbukkit.v1_4_R1.inventory.CraftInventory;
 public class SpecialEnderChest extends InventorySubcontainer implements IInventory, ISpecialEnderChest {
     public List<HumanEntity> transaction = new ArrayList<HumanEntity>();
     public boolean playerOnline = false;
-    private final CraftPlayer owner;
+    private CraftPlayer owner;
     private final InventoryEnderChest enderChest;
     private int maxStack = MAX_STACK;
     private final CraftInventory inventory = new CraftInventory(this);
@@ -60,22 +60,25 @@ public class SpecialEnderChest extends InventorySubcontainer implements IInvento
     }
 
     @Override
-    public boolean inventoryRemovalCheck() {
+    public boolean inventoryRemovalCheck(boolean save) {
-        owner.saveData();
+        boolean offline = transaction.isEmpty() && !playerOnline;
-        return transaction.isEmpty() && !playerOnline;
+        if (offline && save) {
+            owner.saveData();
+        }
+        return offline;
     }
 
     @Override
-    public void setPlayerOnline(Player p) {
+    public void setPlayerOnline(Player player) {
         if (!playerOnline) {
             try {
-                InventoryEnderChest playerEnderChest = ((CraftPlayer) p).getHandle().getEnderChest();
+                owner = (CraftPlayer) player;
+                InventoryEnderChest playerEnderChest = owner.getHandle().getEnderChest();
                 Field field = playerEnderChest.getClass().getField("items");
                 field.setAccessible(true);
                 field.set(playerEnderChest, this.items);
             }
             catch (Exception e) {}
-            p.saveData();
             playerOnline = true;
         }
     }
@@ -83,7 +86,7 @@ public class SpecialEnderChest extends InventorySubcontainer implements IInvento
     @Override
     public boolean setPlayerOffline() {
         playerOnline = false;
-        return inventoryRemovalCheck();
+        return inventoryRemovalCheck(false);
     }
 
     @Override
@@ -99,7 +102,7 @@ public class SpecialEnderChest extends InventorySubcontainer implements IInvento
     @Override
     public void onClose(CraftHumanEntity who) {
         transaction.remove(who);
-        this.inventoryRemovalCheck();
+        this.inventoryRemovalCheck(true);
     }
 
     @Override

src/main/java/com/lishid/openinv/internal/v1_4_R1/SpecialPlayerInventory.java

@@ -50,18 +50,21 @@ public class SpecialPlayerInventory extends PlayerInventory implements ISpecialP
     }
 
     @Override
-    public boolean inventoryRemovalCheck() {
+    public boolean inventoryRemovalCheck(boolean save) {
-        owner.saveData();
+        boolean offline = transaction.isEmpty() && !playerOnline;
-        return transaction.isEmpty() && !playerOnline;
+        if (offline && save) {
+            owner.saveData();
+        }
+        return offline;
     }
 
     @Override
     public void setPlayerOnline(Player player) {
         if (!playerOnline) {
-            CraftPlayer p = (CraftPlayer) player;
+            owner = (CraftPlayer) player;
-            p.getHandle().inventory.items = this.items;
+            this.player = owner.getHandle();
-            p.getHandle().inventory.armor = this.armor;
+            this.player.inventory.items = this.items;
-            p.saveData();
+            this.player.inventory.armor = this.armor;
             playerOnline = true;
         }
     }
@@ -69,13 +72,13 @@ public class SpecialPlayerInventory extends PlayerInventory implements ISpecialP
     @Override
     public boolean setPlayerOffline() {
         playerOnline = false;
-        return this.inventoryRemovalCheck();
+        return this.inventoryRemovalCheck(false);
     }
 
     @Override
     public void onClose(CraftHumanEntity who) {
         super.onClose(who);
-        this.inventoryRemovalCheck();
+        this.inventoryRemovalCheck(true);
     }
 
     @Override

src/main/java/com/lishid/openinv/internal/v1_5_R2/PlayerDataManager.java

@@ -29,10 +29,10 @@ import net.minecraft.server.v1_5_R2.PlayerInteractManager;
 
 import org.bukkit.craftbukkit.v1_5_R2.CraftServer;
 
-public class PlayerDataManager implements IPlayerDataManager {
+public class PlayerDataManager extends IPlayerDataManager {
 
     @Override
-    public Player loadPlayer(OfflinePlayer offline) {
+    public Player loadOfflinePlayer(OfflinePlayer offline) {
         MinecraftServer server = ((CraftServer) Bukkit.getServer()).getServer();
 
         // Create an entity to load the player data

src/main/java/com/lishid/openinv/internal/v1_5_R2/SpecialEnderChest.java

@@ -41,7 +41,7 @@ import org.bukkit.craftbukkit.v1_5_R2.inventory.CraftInventory;
 public class SpecialEnderChest extends InventorySubcontainer implements IInventory, ISpecialEnderChest {
     public List<HumanEntity> transaction = new ArrayList<HumanEntity>();
     public boolean playerOnline = false;
-    private final CraftPlayer owner;
+    private CraftPlayer owner;
     private final InventoryEnderChest enderChest;
     private int maxStack = MAX_STACK;
     private final CraftInventory inventory = new CraftInventory(this);
@@ -60,22 +60,25 @@ public class SpecialEnderChest extends InventorySubcontainer implements IInvento
     }
 
     @Override
-    public boolean inventoryRemovalCheck() {
+    public boolean inventoryRemovalCheck(boolean save) {
-        owner.saveData();
+        boolean offline = transaction.isEmpty() && !playerOnline;
-        return transaction.isEmpty() && !playerOnline;
+        if (offline && save) {
+            owner.saveData();
+        }
+        return offline;
     }
 
     @Override
-    public void setPlayerOnline(Player p) {
+    public void setPlayerOnline(Player player) {
         if (!playerOnline) {
             try {
-                InventoryEnderChest playerEnderChest = ((CraftPlayer) p).getHandle().getEnderChest();
+                owner = (CraftPlayer) player;
+                InventoryEnderChest playerEnderChest = owner.getHandle().getEnderChest();
                 Field field = playerEnderChest.getClass().getField("items");
                 field.setAccessible(true);
                 field.set(playerEnderChest, this.items);
             }
             catch (Exception e) {}
-            p.saveData();
             playerOnline = true;
         }
     }
@@ -83,7 +86,7 @@ public class SpecialEnderChest extends InventorySubcontainer implements IInvento
     @Override
     public boolean setPlayerOffline() {
         playerOnline = false;
-        return inventoryRemovalCheck();
+        return inventoryRemovalCheck(false);
     }
 
     @Override
@@ -99,7 +102,7 @@ public class SpecialEnderChest extends InventorySubcontainer implements IInvento
     @Override
     public void onClose(CraftHumanEntity who) {
         transaction.remove(who);
-        this.inventoryRemovalCheck();
+        this.inventoryRemovalCheck(true);
     }
 
     @Override

src/main/java/com/lishid/openinv/internal/v1_5_R2/SpecialPlayerInventory.java

@@ -50,18 +50,21 @@ public class SpecialPlayerInventory extends PlayerInventory implements ISpecialP
     }
 
     @Override
-    public boolean inventoryRemovalCheck() {
+    public boolean inventoryRemovalCheck(boolean save) {
-        owner.saveData();
+        boolean offline = transaction.isEmpty() && !playerOnline;
-        return transaction.isEmpty() && !playerOnline;
+        if (offline && save) {
+            owner.saveData();
+        }
+        return offline;
     }
 
     @Override
     public void setPlayerOnline(Player player) {
         if (!playerOnline) {
-            CraftPlayer p = (CraftPlayer) player;
+            owner = (CraftPlayer) player;
-            p.getHandle().inventory.items = this.items;
+            this.player = owner.getHandle();
-            p.getHandle().inventory.armor = this.armor;
+            this.player.inventory.items = this.items;
-            p.saveData();
+            this.player.inventory.armor = this.armor;
             playerOnline = true;
         }
     }
@@ -69,13 +72,13 @@ public class SpecialPlayerInventory extends PlayerInventory implements ISpecialP
     @Override
     public boolean setPlayerOffline() {
         playerOnline = false;
-        return this.inventoryRemovalCheck();
+        return this.inventoryRemovalCheck(false);
     }
 
     @Override
     public void onClose(CraftHumanEntity who) {
         super.onClose(who);
-        this.inventoryRemovalCheck();
+        this.inventoryRemovalCheck(true);
     }
 
     @Override

src/main/java/com/lishid/openinv/internal/v1_5_R3/PlayerDataManager.java

@@ -29,10 +29,10 @@ import net.minecraft.server.v1_5_R3.PlayerInteractManager;
 
 import org.bukkit.craftbukkit.v1_5_R3.CraftServer;
 
-public class PlayerDataManager implements IPlayerDataManager {
+public class PlayerDataManager extends IPlayerDataManager {
 
     @Override
-    public Player loadPlayer(OfflinePlayer offline) {
+    public Player loadOfflinePlayer(OfflinePlayer offline) {
         MinecraftServer server = ((CraftServer) Bukkit.getServer()).getServer();
 
         // Create an entity to load the player data

src/main/java/com/lishid/openinv/internal/v1_5_R3/SpecialEnderChest.java

@@ -41,7 +41,7 @@ import org.bukkit.craftbukkit.v1_5_R3.inventory.CraftInventory;
 public class SpecialEnderChest extends InventorySubcontainer implements IInventory, ISpecialEnderChest {
     public List<HumanEntity> transaction = new ArrayList<HumanEntity>();
     public boolean playerOnline = false;
-    private final CraftPlayer owner;
+    private CraftPlayer owner;
     private final InventoryEnderChest enderChest;
     private int maxStack = MAX_STACK;
     private final CraftInventory inventory = new CraftInventory(this);
@@ -60,22 +60,25 @@ public class SpecialEnderChest extends InventorySubcontainer implements IInvento
     }
 
     @Override
-    public boolean inventoryRemovalCheck() {
+    public boolean inventoryRemovalCheck(boolean save) {
-        owner.saveData();
+        boolean offline = transaction.isEmpty() && !playerOnline;
-        return transaction.isEmpty() && !playerOnline;
+        if (offline && save) {
+            owner.saveData();
+        }
+        return offline;
     }
 
     @Override
-    public void setPlayerOnline(Player p) {
+    public void setPlayerOnline(Player player) {
         if (!playerOnline) {
             try {
-                InventoryEnderChest playerEnderChest = ((CraftPlayer) p).getHandle().getEnderChest();
+                owner = (CraftPlayer) player;
+                InventoryEnderChest playerEnderChest = owner.getHandle().getEnderChest();
                 Field field = playerEnderChest.getClass().getField("items");
                 field.setAccessible(true);
                 field.set(playerEnderChest, this.items);
             }
             catch (Exception e) {}
-            p.saveData();
             playerOnline = true;
         }
     }
@@ -83,7 +86,7 @@ public class SpecialEnderChest extends InventorySubcontainer implements IInvento
     @Override
     public boolean setPlayerOffline() {
         playerOnline = false;
-        return inventoryRemovalCheck();
+        return inventoryRemovalCheck(false);
     }
 
     @Override
@@ -99,7 +102,7 @@ public class SpecialEnderChest extends InventorySubcontainer implements IInvento
     @Override
     public void onClose(CraftHumanEntity who) {
         transaction.remove(who);
-        this.inventoryRemovalCheck();
+        this.inventoryRemovalCheck(true);
     }
 
     @Override

src/main/java/com/lishid/openinv/internal/v1_5_R3/SpecialPlayerInventory.java

@@ -50,18 +50,21 @@ public class SpecialPlayerInventory extends PlayerInventory implements ISpecialP
     }
 
     @Override
-    public boolean inventoryRemovalCheck() {
+    public boolean inventoryRemovalCheck(boolean save) {
-        owner.saveData();
+        boolean offline = transaction.isEmpty() && !playerOnline;
-        return transaction.isEmpty() && !playerOnline;
+        if (offline && save) {
+            owner.saveData();
+        }
+        return offline;
     }
 
     @Override
     public void setPlayerOnline(Player player) {
         if (!playerOnline) {
-            CraftPlayer p = (CraftPlayer) player;
+            owner = (CraftPlayer) player;
-            p.getHandle().inventory.items = this.items;
+            this.player = owner.getHandle();
-            p.getHandle().inventory.armor = this.armor;
+            this.player.inventory.items = this.items;
-            p.saveData();
+            this.player.inventory.armor = this.armor;
             playerOnline = true;
         }
     }
@@ -69,13 +72,13 @@ public class SpecialPlayerInventory extends PlayerInventory implements ISpecialP
     @Override
     public boolean setPlayerOffline() {
         playerOnline = false;
-        return this.inventoryRemovalCheck();
+        return this.inventoryRemovalCheck(false);
     }
 
     @Override
     public void onClose(CraftHumanEntity who) {
         super.onClose(who);
-        this.inventoryRemovalCheck();
+        this.inventoryRemovalCheck(true);
     }
 
     @Override

src/main/java/com/lishid/openinv/internal/v1_6_R1/PlayerDataManager.java

@@ -29,10 +29,10 @@ import net.minecraft.server.v1_6_R1.PlayerInteractManager;
 
 import org.bukkit.craftbukkit.v1_6_R1.CraftServer;
 
-public class PlayerDataManager implements IPlayerDataManager {
+public class PlayerDataManager extends IPlayerDataManager {
 
     @Override
-    public Player loadPlayer(OfflinePlayer offline) {
+    public Player loadOfflinePlayer(OfflinePlayer offline) {
         MinecraftServer server = ((CraftServer) Bukkit.getServer()).getServer();
 
         // Create an entity to load the player data

src/main/java/com/lishid/openinv/internal/v1_6_R1/SpecialEnderChest.java

@@ -41,7 +41,7 @@ import org.bukkit.craftbukkit.v1_6_R1.inventory.CraftInventory;
 public class SpecialEnderChest extends InventorySubcontainer implements IInventory, ISpecialEnderChest {
     public List<HumanEntity> transaction = new ArrayList<HumanEntity>();
     public boolean playerOnline = false;
-    private final CraftPlayer owner;
+    private CraftPlayer owner;
     private final InventoryEnderChest enderChest;
     private int maxStack = MAX_STACK;
     private final CraftInventory inventory = new CraftInventory(this);
@@ -60,22 +60,25 @@ public class SpecialEnderChest extends InventorySubcontainer implements IInvento
     }
 
     @Override
-    public boolean inventoryRemovalCheck() {
+    public boolean inventoryRemovalCheck(boolean save) {
-        owner.saveData();
+        boolean offline = transaction.isEmpty() && !playerOnline;
-        return transaction.isEmpty() && !playerOnline;
+        if (offline && save) {
+            owner.saveData();
+        }
+        return offline;
     }
 
     @Override
-    public void setPlayerOnline(Player p) {
+    public void setPlayerOnline(Player player) {
         if (!playerOnline) {
             try {
-                InventoryEnderChest playerEnderChest = ((CraftPlayer) p).getHandle().getEnderChest();
+                owner = (CraftPlayer) player;
+                InventoryEnderChest playerEnderChest = owner.getHandle().getEnderChest();
                 Field field = playerEnderChest.getClass().getField("items");
                 field.setAccessible(true);
                 field.set(playerEnderChest, this.items);
             }
             catch (Exception e) {}
-            p.saveData();
             playerOnline = true;
         }
     }
@@ -83,7 +86,7 @@ public class SpecialEnderChest extends InventorySubcontainer implements IInvento
     @Override
     public boolean setPlayerOffline() {
         playerOnline = false;
-        return inventoryRemovalCheck();
+        return inventoryRemovalCheck(false);
     }
 
     @Override
@@ -99,7 +102,7 @@ public class SpecialEnderChest extends InventorySubcontainer implements IInvento
     @Override
     public void onClose(CraftHumanEntity who) {
         transaction.remove(who);
-        this.inventoryRemovalCheck();
+        this.inventoryRemovalCheck(true);
     }
 
     @Override

src/main/java/com/lishid/openinv/internal/v1_6_R1/SpecialPlayerInventory.java

@@ -51,18 +51,21 @@ public class SpecialPlayerInventory extends PlayerInventory implements ISpecialP
     }
 
     @Override
-    public boolean inventoryRemovalCheck() {
+    public boolean inventoryRemovalCheck(boolean save) {
-        owner.saveData();
+        boolean offline = transaction.isEmpty() && !playerOnline;
-        return transaction.isEmpty() && !playerOnline;
+        if (offline && save) {
+            owner.saveData();
+        }
+        return offline;
     }
 
     @Override
     public void setPlayerOnline(Player player) {
         if (!playerOnline) {
-            CraftPlayer p = (CraftPlayer) player;
+            owner = (CraftPlayer) player;
-            p.getHandle().inventory.items = this.items;
+            this.player = owner.getHandle();
-            p.getHandle().inventory.armor = this.armor;
+            this.player.inventory.items = this.items;
-            p.saveData();
+            this.player.inventory.armor = this.armor;
             playerOnline = true;
         }
     }
@@ -70,13 +73,13 @@ public class SpecialPlayerInventory extends PlayerInventory implements ISpecialP
     @Override
     public boolean setPlayerOffline() {
         playerOnline = false;
-        return this.inventoryRemovalCheck();
+        return this.inventoryRemovalCheck(false);
     }
 
     @Override
     public void onClose(CraftHumanEntity who) {
         super.onClose(who);
-        this.inventoryRemovalCheck();
+        this.inventoryRemovalCheck(true);
     }
 
     @Override

src/main/java/com/lishid/openinv/internal/v1_6_R2/PlayerDataManager.java

@@ -29,10 +29,10 @@ import net.minecraft.server.v1_6_R2.PlayerInteractManager;
 
 import org.bukkit.craftbukkit.v1_6_R2.CraftServer;
 
-public class PlayerDataManager implements IPlayerDataManager {
+public class PlayerDataManager extends IPlayerDataManager {
 
     @Override
-    public Player loadPlayer(OfflinePlayer offline) {
+    public Player loadOfflinePlayer(OfflinePlayer offline) {
         MinecraftServer server = ((CraftServer) Bukkit.getServer()).getServer();
 
         // Create an entity to load the player data

src/main/java/com/lishid/openinv/internal/v1_6_R2/SpecialEnderChest.java

@@ -41,7 +41,7 @@ import org.bukkit.craftbukkit.v1_6_R2.inventory.CraftInventory;
 public class SpecialEnderChest extends InventorySubcontainer implements IInventory, ISpecialEnderChest {
     public List<HumanEntity> transaction = new ArrayList<HumanEntity>();
     public boolean playerOnline = false;
-    private final CraftPlayer owner;
+    private CraftPlayer owner;
     private final InventoryEnderChest enderChest;
     private int maxStack = MAX_STACK;
     private final CraftInventory inventory = new CraftInventory(this);
@@ -60,22 +60,25 @@ public class SpecialEnderChest extends InventorySubcontainer implements IInvento
     }
 
     @Override
-    public boolean inventoryRemovalCheck() {
+    public boolean inventoryRemovalCheck(boolean save) {
-        owner.saveData();
+        boolean offline = transaction.isEmpty() && !playerOnline;
-        return transaction.isEmpty() && !playerOnline;
+        if (offline && save) {
+            owner.saveData();
+        }
+        return offline;
     }
 
     @Override
-    public void setPlayerOnline(Player p) {
+    public void setPlayerOnline(Player player) {
         if (!playerOnline) {
             try {
-                InventoryEnderChest playerEnderChest = ((CraftPlayer) p).getHandle().getEnderChest();
+                owner = (CraftPlayer) player;
+                InventoryEnderChest playerEnderChest = owner.getHandle().getEnderChest();
                 Field field = playerEnderChest.getClass().getField("items");
                 field.setAccessible(true);
                 field.set(playerEnderChest, this.items);
             }
             catch (Exception e) {}
-            p.saveData();
             playerOnline = true;
         }
     }
@@ -83,7 +86,7 @@ public class SpecialEnderChest extends InventorySubcontainer implements IInvento
     @Override
     public boolean setPlayerOffline() {
         playerOnline = false;
-        return inventoryRemovalCheck();
+        return inventoryRemovalCheck(false);
     }
 
     @Override
@@ -99,7 +102,7 @@ public class SpecialEnderChest extends InventorySubcontainer implements IInvento
     @Override
     public void onClose(CraftHumanEntity who) {
         transaction.remove(who);
-        this.inventoryRemovalCheck();
+        this.inventoryRemovalCheck(true);
     }
 
     @Override

src/main/java/com/lishid/openinv/internal/v1_6_R2/SpecialPlayerInventory.java

@@ -50,18 +50,21 @@ public class SpecialPlayerInventory extends PlayerInventory implements ISpecialP
     }
 
     @Override
-    public boolean inventoryRemovalCheck() {
+    public boolean inventoryRemovalCheck(boolean save) {
-        owner.saveData();
+        boolean offline = transaction.isEmpty() && !playerOnline;
-        return transaction.isEmpty() && !playerOnline;
+        if (offline && save) {
+            owner.saveData();
+        }
+        return offline;
     }
 
     @Override
     public void setPlayerOnline(Player player) {
         if (!playerOnline) {
-            CraftPlayer p = (CraftPlayer) player;
+            owner = (CraftPlayer) player;
-            p.getHandle().inventory.items = this.items;
+            this.player = owner.getHandle();
-            p.getHandle().inventory.armor = this.armor;
+            this.player.inventory.items = this.items;
-            p.saveData();
+            this.player.inventory.armor = this.armor;
             playerOnline = true;
         }
     }
@@ -69,13 +72,13 @@ public class SpecialPlayerInventory extends PlayerInventory implements ISpecialP
     @Override
     public boolean setPlayerOffline() {
         playerOnline = false;
-        return this.inventoryRemovalCheck();
+        return this.inventoryRemovalCheck(false);
     }
 
     @Override
     public void onClose(CraftHumanEntity who) {
         super.onClose(who);
-        this.inventoryRemovalCheck();
+        this.inventoryRemovalCheck(true);
     }
 
     @Override

src/main/java/com/lishid/openinv/internal/v1_6_R3/PlayerDataManager.java

@@ -29,10 +29,10 @@ import net.minecraft.server.v1_6_R3.PlayerInteractManager;
 
 import org.bukkit.craftbukkit.v1_6_R3.CraftServer;
 
-public class PlayerDataManager implements IPlayerDataManager {
+public class PlayerDataManager extends IPlayerDataManager {
 
     @Override
-    public Player loadPlayer(OfflinePlayer offline) {
+    public Player loadOfflinePlayer(OfflinePlayer offline) {
         MinecraftServer server = ((CraftServer) Bukkit.getServer()).getServer();
 
         // Create an entity to load the player data

src/main/java/com/lishid/openinv/internal/v1_6_R3/SpecialEnderChest.java

@@ -41,7 +41,7 @@ import org.bukkit.craftbukkit.v1_6_R3.inventory.CraftInventory;
 public class SpecialEnderChest extends InventorySubcontainer implements IInventory, ISpecialEnderChest {
     public List<HumanEntity> transaction = new ArrayList<HumanEntity>();
     public boolean playerOnline = false;
-    private final CraftPlayer owner;
+    private CraftPlayer owner;
     private final InventoryEnderChest enderChest;
     private int maxStack = MAX_STACK;
     private final CraftInventory inventory = new CraftInventory(this);
@@ -60,22 +60,25 @@ public class SpecialEnderChest extends InventorySubcontainer implements IInvento
     }
 
     @Override
-    public boolean inventoryRemovalCheck() {
+    public boolean inventoryRemovalCheck(boolean save) {
-        owner.saveData();
+        boolean offline = transaction.isEmpty() && !playerOnline;
-        return transaction.isEmpty() && !playerOnline;
+        if (offline && save) {
+            owner.saveData();
+        }
+        return offline;
     }
 
     @Override
-    public void setPlayerOnline(Player p) {
+    public void setPlayerOnline(Player player) {
         if (!playerOnline) {
             try {
-                InventoryEnderChest playerEnderChest = ((CraftPlayer) p).getHandle().getEnderChest();
+                owner = (CraftPlayer) player;
+                InventoryEnderChest playerEnderChest = owner.getHandle().getEnderChest();
                 Field field = playerEnderChest.getClass().getField("items");
                 field.setAccessible(true);
                 field.set(playerEnderChest, this.items);
             }
             catch (Exception e) {}
-            p.saveData();
             playerOnline = true;
         }
     }
@@ -83,7 +86,7 @@ public class SpecialEnderChest extends InventorySubcontainer implements IInvento
     @Override
     public boolean setPlayerOffline() {
         playerOnline = false;
-        return inventoryRemovalCheck();
+        return inventoryRemovalCheck(false);
     }
 
     @Override
@@ -99,7 +102,7 @@ public class SpecialEnderChest extends InventorySubcontainer implements IInvento
     @Override
     public void onClose(CraftHumanEntity who) {
         transaction.remove(who);
-        this.inventoryRemovalCheck();
+        this.inventoryRemovalCheck(true);
     }
 
     @Override

src/main/java/com/lishid/openinv/internal/v1_6_R3/SpecialPlayerInventory.java

@@ -50,18 +50,21 @@ public class SpecialPlayerInventory extends PlayerInventory implements ISpecialP
     }
 
     @Override
-    public boolean inventoryRemovalCheck() {
+    public boolean inventoryRemovalCheck(boolean save) {
-        owner.saveData();
+        boolean offline = transaction.isEmpty() && !playerOnline;
-        return transaction.isEmpty() && !playerOnline;
+        if (offline && save) {
+            owner.saveData();
+        }
+        return offline;
     }
 
     @Override
     public void setPlayerOnline(Player player) {
         if (!playerOnline) {
-            CraftPlayer p = (CraftPlayer) player;
+            owner = (CraftPlayer) player;
-            p.getHandle().inventory.items = this.items;
+            this.player = owner.getHandle();
-            p.getHandle().inventory.armor = this.armor;
+            this.player.inventory.items = this.items;
-            p.saveData();
+            this.player.inventory.armor = this.armor;
             playerOnline = true;
         }
     }
@@ -69,13 +72,13 @@ public class SpecialPlayerInventory extends PlayerInventory implements ISpecialP
     @Override
     public boolean setPlayerOffline() {
         playerOnline = false;
-        return this.inventoryRemovalCheck();
+        return this.inventoryRemovalCheck(false);
     }
 
     @Override
     public void onClose(CraftHumanEntity who) {
         super.onClose(who);
-        this.inventoryRemovalCheck();
+        this.inventoryRemovalCheck(true);
     }
 
     @Override

src/main/java/com/lishid/openinv/internal/v1_7_R1/PlayerDataManager.java

@@ -30,10 +30,10 @@ import net.minecraft.util.com.mojang.authlib.GameProfile;
 
 import org.bukkit.craftbukkit.v1_7_R1.CraftServer;
 
-public class PlayerDataManager implements IPlayerDataManager {
+public class PlayerDataManager extends IPlayerDataManager {
 
     @Override
-    public Player loadPlayer(OfflinePlayer offline) {
+    public Player loadOfflinePlayer(OfflinePlayer offline) {
         MinecraftServer server = ((CraftServer) Bukkit.getServer()).getServer();
 
         GameProfile profile = new GameProfile(null, offline.getName());

src/main/java/com/lishid/openinv/internal/v1_7_R1/SpecialEnderChest.java

@@ -41,7 +41,7 @@ import org.bukkit.craftbukkit.v1_7_R1.inventory.CraftInventory;
 public class SpecialEnderChest extends InventorySubcontainer implements IInventory, ISpecialEnderChest {
     public List<HumanEntity> transaction = new ArrayList<HumanEntity>();
     public boolean playerOnline = false;
-    private final CraftPlayer owner;
+    private CraftPlayer owner;
     private final InventoryEnderChest enderChest;
     private int maxStack = MAX_STACK;
     private final CraftInventory inventory = new CraftInventory(this);
@@ -60,22 +60,25 @@ public class SpecialEnderChest extends InventorySubcontainer implements IInvento
     }
 
     @Override
-    public boolean inventoryRemovalCheck() {
+    public boolean inventoryRemovalCheck(boolean save) {
-        owner.saveData();
+        boolean offline = transaction.isEmpty() && !playerOnline;
-        return transaction.isEmpty() && !playerOnline;
+        if (offline && save) {
+            owner.saveData();
+        }
+        return offline;
     }
 
     @Override
-    public void setPlayerOnline(Player p) {
+    public void setPlayerOnline(Player player) {
         if (!playerOnline) {
             try {
-                InventoryEnderChest playerEnderChest = ((CraftPlayer) p).getHandle().getEnderChest();
+                owner = (CraftPlayer) player;
+                InventoryEnderChest playerEnderChest = owner.getHandle().getEnderChest();
                 Field field = playerEnderChest.getClass().getField("items");
                 field.setAccessible(true);
                 field.set(playerEnderChest, this.items);
             }
             catch (Exception e) {}
-            p.saveData();
             playerOnline = true;
         }
     }
@@ -83,7 +86,7 @@ public class SpecialEnderChest extends InventorySubcontainer implements IInvento
     @Override
     public boolean setPlayerOffline() {
         playerOnline = false;
-        return inventoryRemovalCheck();
+        return inventoryRemovalCheck(false);
     }
 
     @Override
@@ -99,7 +102,7 @@ public class SpecialEnderChest extends InventorySubcontainer implements IInvento
     @Override
     public void onClose(CraftHumanEntity who) {
         transaction.remove(who);
-        this.inventoryRemovalCheck();
+        this.inventoryRemovalCheck(true);
     }
 
     @Override

src/main/java/com/lishid/openinv/internal/v1_7_R1/SpecialPlayerInventory.java

@@ -50,18 +50,21 @@ public class SpecialPlayerInventory extends PlayerInventory implements ISpecialP
     }
 
     @Override
-    public boolean inventoryRemovalCheck() {
+    public boolean inventoryRemovalCheck(boolean save) {
-        owner.saveData();
+        boolean offline = transaction.isEmpty() && !playerOnline;
-        return transaction.isEmpty() && !playerOnline;
+        if (offline && save) {
+            owner.saveData();
+        }
+        return offline;
     }
 
     @Override
     public void setPlayerOnline(Player player) {
         if (!playerOnline) {
-            CraftPlayer p = (CraftPlayer) player;
+            owner = (CraftPlayer) player;
-            p.getHandle().inventory.items = this.items;
+            this.player = owner.getHandle();
-            p.getHandle().inventory.armor = this.armor;
+            this.player.inventory.items = this.items;
-            p.saveData();
+            this.player.inventory.armor = this.armor;
             playerOnline = true;
         }
     }
@@ -69,13 +72,13 @@ public class SpecialPlayerInventory extends PlayerInventory implements ISpecialP
     @Override
     public boolean setPlayerOffline() {
         playerOnline = false;
-        return this.inventoryRemovalCheck();
+        return this.inventoryRemovalCheck(false);
     }
 
     @Override
     public void onClose(CraftHumanEntity who) {
         super.onClose(who);
-        this.inventoryRemovalCheck();
+        this.inventoryRemovalCheck(true);
     }
 
     @Override

src/main/java/com/lishid/openinv/internal/v1_7_R2/PlayerDataManager.java

@@ -30,10 +30,10 @@ import net.minecraft.util.com.mojang.authlib.GameProfile;
 
 import org.bukkit.craftbukkit.v1_7_R2.CraftServer;
 
-public class PlayerDataManager implements IPlayerDataManager {
+public class PlayerDataManager extends IPlayerDataManager {
 
     @Override
-    public Player loadPlayer(OfflinePlayer offline) {
+    public Player loadOfflinePlayer(OfflinePlayer offline) {
         MinecraftServer server = ((CraftServer) Bukkit.getServer()).getServer();
 
         GameProfile profile = new GameProfile(null, offline.getName());

src/main/java/com/lishid/openinv/internal/v1_7_R2/SpecialEnderChest.java

@@ -41,7 +41,7 @@ import org.bukkit.craftbukkit.v1_7_R2.inventory.CraftInventory;
 public class SpecialEnderChest extends InventorySubcontainer implements IInventory, ISpecialEnderChest {
     public List<HumanEntity> transaction = new ArrayList<HumanEntity>();
     public boolean playerOnline = false;
-    private final CraftPlayer owner;
+    private CraftPlayer owner;
     private final InventoryEnderChest enderChest;
     private int maxStack = MAX_STACK;
     private final CraftInventory inventory = new CraftInventory(this);
@@ -60,22 +60,25 @@ public class SpecialEnderChest extends InventorySubcontainer implements IInvento
     }
 
     @Override
-    public boolean inventoryRemovalCheck() {
+    public boolean inventoryRemovalCheck(boolean save) {
-        owner.saveData();
+        boolean offline = transaction.isEmpty() && !playerOnline;
-        return transaction.isEmpty() && !playerOnline;
+        if (offline && save) {
+            owner.saveData();
+        }
+        return offline;
     }
 
     @Override
-    public void setPlayerOnline(Player p) {
+    public void setPlayerOnline(Player player) {
         if (!playerOnline) {
             try {
-                InventoryEnderChest playerEnderChest = ((CraftPlayer) p).getHandle().getEnderChest();
+                owner = (CraftPlayer) player;
+                InventoryEnderChest playerEnderChest = owner.getHandle().getEnderChest();
                 Field field = playerEnderChest.getClass().getField("items");
                 field.setAccessible(true);
                 field.set(playerEnderChest, this.items);
             }
             catch (Exception e) {}
-            p.saveData();
             playerOnline = true;
         }
     }
@@ -83,7 +86,7 @@ public class SpecialEnderChest extends InventorySubcontainer implements IInvento
     @Override
     public boolean setPlayerOffline() {
         playerOnline = false;
-        return inventoryRemovalCheck();
+        return inventoryRemovalCheck(false);
     }
 
     @Override
@@ -99,7 +102,7 @@ public class SpecialEnderChest extends InventorySubcontainer implements IInvento
     @Override
     public void onClose(CraftHumanEntity who) {
         transaction.remove(who);
-        this.inventoryRemovalCheck();
+        this.inventoryRemovalCheck(true);
     }
 
     @Override

src/main/java/com/lishid/openinv/internal/v1_7_R2/SpecialPlayerInventory.java

@@ -50,18 +50,21 @@ public class SpecialPlayerInventory extends PlayerInventory implements ISpecialP
     }
 
     @Override
-    public boolean inventoryRemovalCheck() {
+    public boolean inventoryRemovalCheck(boolean save) {
-        owner.saveData();
+        boolean offline = transaction.isEmpty() && !playerOnline;
-        return transaction.isEmpty() && !playerOnline;
+        if (offline && save) {
+            owner.saveData();
+        }
+        return offline;
     }
 
     @Override
     public void setPlayerOnline(Player player) {
         if (!playerOnline) {
-            CraftPlayer p = (CraftPlayer) player;
+            owner = (CraftPlayer) player;
-            p.getHandle().inventory.items = this.items;
+            this.player = owner.getHandle();
-            p.getHandle().inventory.armor = this.armor;
+            this.player.inventory.items = this.items;
-            p.saveData();
+            this.player.inventory.armor = this.armor;
             playerOnline = true;
         }
     }
@@ -69,13 +72,13 @@ public class SpecialPlayerInventory extends PlayerInventory implements ISpecialP
     @Override
     public boolean setPlayerOffline() {
         playerOnline = false;
-        return this.inventoryRemovalCheck();
+        return this.inventoryRemovalCheck(false);
     }
 
     @Override
     public void onClose(CraftHumanEntity who) {
         super.onClose(who);
-        this.inventoryRemovalCheck();
+        this.inventoryRemovalCheck(true);
     }
 
     @Override

src/main/java/com/lishid/openinv/internal/v1_7_R3/PlayerDataManager.java

@@ -30,10 +30,10 @@ import net.minecraft.util.com.mojang.authlib.GameProfile;
 
 import org.bukkit.craftbukkit.v1_7_R3.CraftServer;
 
-public class PlayerDataManager implements IPlayerDataManager {
+public class PlayerDataManager extends IPlayerDataManager {
 
     @Override
-    public Player loadPlayer(OfflinePlayer offline) {
+    public Player loadOfflinePlayer(OfflinePlayer offline) {
         MinecraftServer server = ((CraftServer) Bukkit.getServer()).getServer();
 
         GameProfile profile = new GameProfile(offline.getUniqueId(), offline.getName());

src/main/java/com/lishid/openinv/internal/v1_7_R3/SpecialEnderChest.java

@@ -41,7 +41,7 @@ import org.bukkit.craftbukkit.v1_7_R3.inventory.CraftInventory;
 public class SpecialEnderChest extends InventorySubcontainer implements IInventory, ISpecialEnderChest {
     public List<HumanEntity> transaction = new ArrayList<HumanEntity>();
     public boolean playerOnline = false;
-    private final CraftPlayer owner;
+    private CraftPlayer owner;
     private final InventoryEnderChest enderChest;
     private int maxStack = MAX_STACK;
     private final CraftInventory inventory = new CraftInventory(this);
@@ -60,22 +60,25 @@ public class SpecialEnderChest extends InventorySubcontainer implements IInvento
     }
 
     @Override
-    public boolean inventoryRemovalCheck() {
+    public boolean inventoryRemovalCheck(boolean save) {
-        owner.saveData();
+        boolean offline = transaction.isEmpty() && !playerOnline;
-        return transaction.isEmpty() && !playerOnline;
+        if (offline && save) {
+            owner.saveData();
+        }
+        return offline;
     }
 
     @Override
-    public void setPlayerOnline(Player p) {
+    public void setPlayerOnline(Player player) {
         if (!playerOnline) {
             try {
-                InventoryEnderChest playerEnderChest = ((CraftPlayer) p).getHandle().getEnderChest();
+                owner = (CraftPlayer) player;
+                InventoryEnderChest playerEnderChest = owner.getHandle().getEnderChest();
                 Field field = playerEnderChest.getClass().getField("items");
                 field.setAccessible(true);
                 field.set(playerEnderChest, this.items);
             }
             catch (Exception e) {}
-            p.saveData();
             playerOnline = true;
         }
     }
@@ -83,7 +86,7 @@ public class SpecialEnderChest extends InventorySubcontainer implements IInvento
     @Override
     public boolean setPlayerOffline() {
         playerOnline = false;
-        return inventoryRemovalCheck();
+        return inventoryRemovalCheck(false);
     }
 
     @Override
@@ -99,7 +102,7 @@ public class SpecialEnderChest extends InventorySubcontainer implements IInvento
     @Override
     public void onClose(CraftHumanEntity who) {
         transaction.remove(who);
-        this.inventoryRemovalCheck();
+        this.inventoryRemovalCheck(true);
     }
 
     @Override

src/main/java/com/lishid/openinv/internal/v1_7_R3/SpecialPlayerInventory.java

@@ -50,18 +50,21 @@ public class SpecialPlayerInventory extends PlayerInventory implements ISpecialP
     }
 
     @Override
-    public boolean inventoryRemovalCheck() {
+    public boolean inventoryRemovalCheck(boolean save) {
-        owner.saveData();
+        boolean offline = transaction.isEmpty() && !playerOnline;
-        return transaction.isEmpty() && !playerOnline;
+        if (offline && save) {
+            owner.saveData();
+        }
+        return offline;
     }
 
     @Override
     public void setPlayerOnline(Player player) {
         if (!playerOnline) {
-            CraftPlayer p = (CraftPlayer) player;
+            owner = (CraftPlayer) player;
-            p.getHandle().inventory.items = this.items;
+            this.player = owner.getHandle();
-            p.getHandle().inventory.armor = this.armor;
+            this.player.inventory.items = this.items;
-            p.saveData();
+            this.player.inventory.armor = this.armor;
             playerOnline = true;
         }
     }
@@ -69,13 +72,13 @@ public class SpecialPlayerInventory extends PlayerInventory implements ISpecialP
     @Override
     public boolean setPlayerOffline() {
         playerOnline = false;
-        return this.inventoryRemovalCheck();
+        return this.inventoryRemovalCheck(false);
     }
 
     @Override
     public void onClose(CraftHumanEntity who) {
         super.onClose(who);
-        this.inventoryRemovalCheck();
+        this.inventoryRemovalCheck(true);
     }
 
     @Override

src/main/java/com/lishid/openinv/internal/v1_7_R4/PlayerDataManager.java

@@ -30,10 +30,10 @@ import net.minecraft.util.com.mojang.authlib.GameProfile;
 
 import org.bukkit.craftbukkit.v1_7_R4.CraftServer;
 
-public class PlayerDataManager implements IPlayerDataManager {
+public class PlayerDataManager extends IPlayerDataManager {
 
     @Override
-    public Player loadPlayer(OfflinePlayer offline) {
+    public Player loadOfflinePlayer(OfflinePlayer offline) {
         MinecraftServer server = ((CraftServer) Bukkit.getServer()).getServer();
 
         GameProfile profile = new GameProfile(offline.getUniqueId(), offline.getName());

src/main/java/com/lishid/openinv/internal/v1_7_R4/SpecialEnderChest.java

@@ -41,7 +41,7 @@ import org.bukkit.craftbukkit.v1_7_R4.inventory.CraftInventory;
 public class SpecialEnderChest extends InventorySubcontainer implements IInventory, ISpecialEnderChest {
     public List<HumanEntity> transaction = new ArrayList<HumanEntity>();
     public boolean playerOnline = false;
-    private final CraftPlayer owner;
+    private CraftPlayer owner;
     private final InventoryEnderChest enderChest;
     private int maxStack = MAX_STACK;
     private final CraftInventory inventory = new CraftInventory(this);
@@ -60,22 +60,25 @@ public class SpecialEnderChest extends InventorySubcontainer implements IInvento
     }
 
     @Override
-    public boolean inventoryRemovalCheck() {
+    public boolean inventoryRemovalCheck(boolean save) {
-        owner.saveData();
+        boolean offline = transaction.isEmpty() && !playerOnline;
-        return transaction.isEmpty() && !playerOnline;
+        if (offline && save) {
+            owner.saveData();
+        }
+        return offline;
     }
 
     @Override
-    public void setPlayerOnline(Player p) {
+    public void setPlayerOnline(Player player) {
         if (!playerOnline) {
             try {
-                InventoryEnderChest playerEnderChest = ((CraftPlayer) p).getHandle().getEnderChest();
+                owner = (CraftPlayer) player;
+                InventoryEnderChest playerEnderChest = owner.getHandle().getEnderChest();
                 Field field = playerEnderChest.getClass().getField("items");
                 field.setAccessible(true);
                 field.set(playerEnderChest, this.items);
             }
             catch (Exception e) {}
-            p.saveData();
             playerOnline = true;
         }
     }
@@ -83,7 +86,7 @@ public class SpecialEnderChest extends InventorySubcontainer implements IInvento
     @Override
     public boolean setPlayerOffline() {
         playerOnline = false;
-        return inventoryRemovalCheck();
+        return inventoryRemovalCheck(false);
     }
 
     @Override
@@ -99,7 +102,7 @@ public class SpecialEnderChest extends InventorySubcontainer implements IInvento
     @Override
     public void onClose(CraftHumanEntity who) {
         transaction.remove(who);
-        this.inventoryRemovalCheck();
+        this.inventoryRemovalCheck(true);
     }
 
     @Override

src/main/java/com/lishid/openinv/internal/v1_7_R4/SpecialPlayerInventory.java

@@ -50,18 +50,21 @@ public class SpecialPlayerInventory extends PlayerInventory implements ISpecialP
     }
 
     @Override
-    public boolean inventoryRemovalCheck() {
+    public boolean inventoryRemovalCheck(boolean save) {
-        owner.saveData();
+        boolean offline = transaction.isEmpty() && !playerOnline;
-        return transaction.isEmpty() && !playerOnline;
+        if (offline && save) {
+            owner.saveData();
+        }
+        return offline;
     }
 
     @Override
     public void setPlayerOnline(Player player) {
         if (!playerOnline) {
-            CraftPlayer p = (CraftPlayer) player;
+            owner = (CraftPlayer) player;
-            p.getHandle().inventory.items = this.items;
+            this.player = owner.getHandle();
-            p.getHandle().inventory.armor = this.armor;
+            this.player.inventory.items = this.items;
-            p.saveData();
+            this.player.inventory.armor = this.armor;
             playerOnline = true;
         }
     }
@@ -69,13 +72,13 @@ public class SpecialPlayerInventory extends PlayerInventory implements ISpecialP
     @Override
     public boolean setPlayerOffline() {
         playerOnline = false;
-        return this.inventoryRemovalCheck();
+        return this.inventoryRemovalCheck(false);
     }
 
     @Override
     public void onClose(CraftHumanEntity who) {
         super.onClose(who);
-        this.inventoryRemovalCheck();
+        this.inventoryRemovalCheck(true);
     }
 
     @Override

src/main/java/com/lishid/openinv/internal/v1_8_R1/PlayerDataManager.java

@@ -30,10 +30,10 @@ import net.minecraft.server.v1_8_R1.PlayerInteractManager;
 //Volatile
 import org.bukkit.craftbukkit.v1_8_R1.CraftServer;
 
-public class PlayerDataManager implements IPlayerDataManager {
+public class PlayerDataManager extends IPlayerDataManager {
 
     @Override
-    public Player loadPlayer(OfflinePlayer offline) {
+    public Player loadOfflinePlayer(OfflinePlayer offline) {
         GameProfile profile = new GameProfile(offline.getUniqueId(), offline.getName());
         MinecraftServer server = ((CraftServer) Bukkit.getServer()).getServer();
         // Create an entity to load the player data

src/main/java/com/lishid/openinv/internal/v1_8_R1/SpecialEnderChest.java

@@ -41,7 +41,7 @@ import org.bukkit.craftbukkit.v1_8_R1.inventory.CraftInventory;
 public class SpecialEnderChest extends InventorySubcontainer implements IInventory, ISpecialEnderChest {
     public List<HumanEntity> transaction = new ArrayList<HumanEntity>();
     public boolean playerOnline = false;
-    private final CraftPlayer owner;
+    private CraftPlayer owner;
     private final InventoryEnderChest enderChest;
     private int maxStack = MAX_STACK;
     private final CraftInventory inventory = new CraftInventory(this);
@@ -60,22 +60,25 @@ public class SpecialEnderChest extends InventorySubcontainer implements IInvento
     }
 
     @Override
-    public boolean inventoryRemovalCheck() {
+    public boolean inventoryRemovalCheck(boolean save) {
-        owner.saveData();
+        boolean offline = transaction.isEmpty() && !playerOnline;
-        return transaction.isEmpty() && !playerOnline;
+        if (offline && save) {
+            owner.saveData();
+        }
+        return offline;
     }
 
     @Override
-    public void setPlayerOnline(Player p) {
+    public void setPlayerOnline(Player player) {
         if (!playerOnline) {
             try {
-                InventoryEnderChest playerEnderChest = ((CraftPlayer) p).getHandle().getEnderChest();
+                owner = (CraftPlayer) player;
+                InventoryEnderChest playerEnderChest = owner.getHandle().getEnderChest();
                 Field field = playerEnderChest.getClass().getField("items");
                 field.setAccessible(true);
                 field.set(playerEnderChest, this.items);
             }
             catch (Exception e) {}
-            p.saveData();
             playerOnline = true;
         }
     }
@@ -83,7 +86,7 @@ public class SpecialEnderChest extends InventorySubcontainer implements IInvento
     @Override
     public boolean setPlayerOffline() {
         playerOnline = false;
-        return this.inventoryRemovalCheck();
+        return inventoryRemovalCheck(false);
     }
 
     @Override
@@ -99,7 +102,7 @@ public class SpecialEnderChest extends InventorySubcontainer implements IInvento
     @Override
     public void onClose(CraftHumanEntity who) {
         transaction.remove(who);
-        this.inventoryRemovalCheck();
+        this.inventoryRemovalCheck(true);
     }
 
     @Override

src/main/java/com/lishid/openinv/internal/v1_8_R1/SpecialPlayerInventory.java

@@ -50,18 +50,21 @@ public class SpecialPlayerInventory extends PlayerInventory implements ISpecialP
     }
 
     @Override
-    public boolean inventoryRemovalCheck() {
+    public boolean inventoryRemovalCheck(boolean save) {
-        owner.saveData();
+        boolean offline = transaction.isEmpty() && !playerOnline;
-        return transaction.isEmpty() && !playerOnline;
+        if (offline && save) {
+            owner.saveData();
+        }
+        return offline;
     }
 
     @Override
     public void setPlayerOnline(Player player) {
         if (!playerOnline) {
-            CraftPlayer p = (CraftPlayer) player;
+            owner = (CraftPlayer) player;
-            p.getHandle().inventory.items = this.items;
+            this.player = owner.getHandle();
-            p.getHandle().inventory.armor = this.armor;
+            this.player.inventory.items = this.items;
-            p.saveData();
+            this.player.inventory.armor = this.armor;
             playerOnline = true;
         }
     }
@@ -69,13 +72,13 @@ public class SpecialPlayerInventory extends PlayerInventory implements ISpecialP
     @Override
     public boolean setPlayerOffline() {
         playerOnline = false;
-        return this.inventoryRemovalCheck();
+        return this.inventoryRemovalCheck(false);
     }
 
     @Override
     public void onClose(CraftHumanEntity who) {
         super.onClose(who);
-        this.inventoryRemovalCheck();
+        this.inventoryRemovalCheck(true);
     }
 
     @Override

src/main/java/com/lishid/openinv/internal/v1_8_R2/PlayerDataManager.java

@@ -30,10 +30,10 @@ import net.minecraft.server.v1_8_R2.PlayerInteractManager;
 
 import org.bukkit.craftbukkit.v1_8_R2.CraftServer;
 
-public class PlayerDataManager implements IPlayerDataManager {
+public class PlayerDataManager extends IPlayerDataManager {
 
     @Override
-    public Player loadPlayer(OfflinePlayer offline) {
+    public Player loadOfflinePlayer(OfflinePlayer offline) {
         MinecraftServer server = ((CraftServer) Bukkit.getServer()).getServer();
 
         GameProfile profile = new GameProfile(offline.getUniqueId(), offline.getName());

src/main/java/com/lishid/openinv/internal/v1_8_R2/SpecialEnderChest.java

@@ -41,7 +41,7 @@ import org.bukkit.craftbukkit.v1_8_R2.inventory.CraftInventory;
 public class SpecialEnderChest extends InventorySubcontainer implements IInventory, ISpecialEnderChest {
     public List<HumanEntity> transaction = new ArrayList<HumanEntity>();
     public boolean playerOnline = false;
-    private final CraftPlayer owner;
+    private CraftPlayer owner;
     private final InventoryEnderChest enderChest;
     private int maxStack = MAX_STACK;
     private final CraftInventory inventory = new CraftInventory(this);
@@ -60,22 +60,25 @@ public class SpecialEnderChest extends InventorySubcontainer implements IInvento
     }
 
     @Override
-    public boolean inventoryRemovalCheck() {
+    public boolean inventoryRemovalCheck(boolean save) {
-        owner.saveData();
+        boolean offline = transaction.isEmpty() && !playerOnline;
-        return transaction.isEmpty() && !playerOnline;
+        if (offline && save) {
+            owner.saveData();
+        }
+        return offline;
     }
 
     @Override
-    public void setPlayerOnline(Player p) {
+    public void setPlayerOnline(Player player) {
         if (!playerOnline) {
             try {
-                InventoryEnderChest playerEnderChest = ((CraftPlayer) p).getHandle().getEnderChest();
+                owner = (CraftPlayer) player;
+                InventoryEnderChest playerEnderChest = owner.getHandle().getEnderChest();
                 Field field = playerEnderChest.getClass().getField("items");
                 field.setAccessible(true);
                 field.set(playerEnderChest, this.items);
             }
             catch (Exception e) {}
-            p.saveData();
             playerOnline = true;
         }
     }
@@ -83,7 +86,7 @@ public class SpecialEnderChest extends InventorySubcontainer implements IInvento
     @Override
     public boolean setPlayerOffline() {
         playerOnline = false;
-        return inventoryRemovalCheck();
+        return inventoryRemovalCheck(false);
     }
 
     @Override
@@ -99,7 +102,7 @@ public class SpecialEnderChest extends InventorySubcontainer implements IInvento
     @Override
     public void onClose(CraftHumanEntity who) {
         transaction.remove(who);
-        this.inventoryRemovalCheck();
+        this.inventoryRemovalCheck(true);
     }
 
     @Override

src/main/java/com/lishid/openinv/internal/v1_8_R2/SpecialPlayerInventory.java

@@ -50,18 +50,21 @@ public class SpecialPlayerInventory extends PlayerInventory implements ISpecialP
     }
 
     @Override
-    public boolean inventoryRemovalCheck() {
+    public boolean inventoryRemovalCheck(boolean save) {
-        owner.saveData();
+        boolean offline = transaction.isEmpty() && !playerOnline;
-        return transaction.isEmpty() && !playerOnline;
+        if (offline && save) {
+            owner.saveData();
+        }
+        return offline;
     }
 
     @Override
     public void setPlayerOnline(Player player) {
         if (!playerOnline) {
-            CraftPlayer p = (CraftPlayer) player;
+            owner = (CraftPlayer) player;
-            p.getHandle().inventory.items = this.items;
+            this.player = owner.getHandle();
-            p.getHandle().inventory.armor = this.armor;
+            this.player.inventory.items = this.items;
-            p.saveData();
+            this.player.inventory.armor = this.armor;
             playerOnline = true;
         }
     }
@@ -69,13 +72,13 @@ public class SpecialPlayerInventory extends PlayerInventory implements ISpecialP
     @Override
     public boolean setPlayerOffline() {
         playerOnline = false;
-        return this.inventoryRemovalCheck();
+        return this.inventoryRemovalCheck(false);
     }
 
     @Override
     public void onClose(CraftHumanEntity who) {
         super.onClose(who);
-        this.inventoryRemovalCheck();
+        this.inventoryRemovalCheck(true);
     }
 
     @Override

src/main/java/com/lishid/openinv/internal/v1_8_R3/PlayerDataManager.java

@@ -30,10 +30,10 @@ import net.minecraft.server.v1_8_R3.PlayerInteractManager;
 //Volatile
 import org.bukkit.craftbukkit.v1_8_R3.CraftServer;
 
-public class PlayerDataManager implements IPlayerDataManager {
+public class PlayerDataManager extends IPlayerDataManager {
 
     @Override
-    public Player loadPlayer(OfflinePlayer offline) {
+    public Player loadOfflinePlayer(OfflinePlayer offline) {
         MinecraftServer server = ((CraftServer) Bukkit.getServer()).getServer();
 
         GameProfile profile = new GameProfile(offline.getUniqueId(), offline.getName());

src/main/java/com/lishid/openinv/internal/v1_8_R3/SpecialEnderChest.java

@@ -41,7 +41,7 @@ import org.bukkit.craftbukkit.v1_8_R3.inventory.CraftInventory;
 public class SpecialEnderChest extends InventorySubcontainer implements IInventory, ISpecialEnderChest {
     public List<HumanEntity> transaction = new ArrayList<HumanEntity>();
     public boolean playerOnline = false;
-    private final CraftPlayer owner;
+    private CraftPlayer owner;
     private final InventoryEnderChest enderChest;
     private int maxStack = MAX_STACK;
     private final CraftInventory inventory = new CraftInventory(this);
@@ -60,22 +60,25 @@ public class SpecialEnderChest extends InventorySubcontainer implements IInvento
     }
 
     @Override
-    public boolean inventoryRemovalCheck() {
+    public boolean inventoryRemovalCheck(boolean save) {
-        owner.saveData();
+        boolean offline = transaction.isEmpty() && !playerOnline;
-        return transaction.isEmpty() && !playerOnline;
+        if (offline && save) {
+            owner.saveData();
+        }
+        return offline;
     }
 
     @Override
-    public void setPlayerOnline(Player p) {
+    public void setPlayerOnline(Player player) {
         if (!playerOnline) {
             try {
-                InventoryEnderChest playerEnderChest = ((CraftPlayer) p).getHandle().getEnderChest();
+                owner = (CraftPlayer) player;
+                InventoryEnderChest playerEnderChest = owner.getHandle().getEnderChest();
                 Field field = playerEnderChest.getClass().getField("items");
                 field.setAccessible(true);
                 field.set(playerEnderChest, this.items);
             }
             catch (Exception e) {}
-            p.saveData();
             playerOnline = true;
         }
     }
@@ -83,7 +86,7 @@ public class SpecialEnderChest extends InventorySubcontainer implements IInvento
     @Override
     public boolean setPlayerOffline() {
         playerOnline = false;
-        return inventoryRemovalCheck();
+        return inventoryRemovalCheck(false);
     }
 
     @Override
@@ -99,7 +102,7 @@ public class SpecialEnderChest extends InventorySubcontainer implements IInvento
     @Override
     public void onClose(CraftHumanEntity who) {
         transaction.remove(who);
-        this.inventoryRemovalCheck();
+        this.inventoryRemovalCheck(true);
     }
 
     @Override

src/main/java/com/lishid/openinv/internal/v1_8_R3/SpecialPlayerInventory.java

@@ -50,18 +50,21 @@ public class SpecialPlayerInventory extends PlayerInventory implements ISpecialP
     }
 
     @Override
-    public boolean inventoryRemovalCheck() {
+    public boolean inventoryRemovalCheck(boolean save) {
-        owner.saveData();
+        boolean offline = transaction.isEmpty() && !playerOnline;
-        return transaction.isEmpty() && !playerOnline;
+        if (offline && save) {
+            owner.saveData();
+        }
+        return offline;
     }
 
     @Override
     public void setPlayerOnline(Player player) {
         if (!playerOnline) {
-            CraftPlayer p = (CraftPlayer) player;
+            owner = (CraftPlayer) player;
-            p.getHandle().inventory.items = this.items;
+            this.player = owner.getHandle();
-            p.getHandle().inventory.armor = this.armor;
+            this.player.inventory.items = this.items;
-            p.saveData();
+            this.player.inventory.armor = this.armor;
             playerOnline = true;
         }
     }
@@ -69,13 +72,13 @@ public class SpecialPlayerInventory extends PlayerInventory implements ISpecialP
     @Override
     public boolean setPlayerOffline() {
         playerOnline = false;
-        return this.inventoryRemovalCheck();
+        return this.inventoryRemovalCheck(false);
     }
 
     @Override
     public void onClose(CraftHumanEntity who) {
         super.onClose(who);
-        this.inventoryRemovalCheck();
+        this.inventoryRemovalCheck(true);
     }
 
     @Override

src/main/java/com/lishid/openinv/internal/v1_9_R1/PlayerDataManager.java

@@ -30,10 +30,10 @@ import net.minecraft.server.v1_9_R1.PlayerInteractManager;
 
 import org.bukkit.craftbukkit.v1_9_R1.CraftServer;
 
-public class PlayerDataManager implements IPlayerDataManager {
+public class PlayerDataManager extends IPlayerDataManager {
 
     @Override
-    public Player loadPlayer(OfflinePlayer offline) {
+    public Player loadOfflinePlayer(OfflinePlayer offline) {
         if (offline == null || !offline.hasPlayedBefore()) {
             return null;
         }

src/main/java/com/lishid/openinv/internal/v1_9_R1/SpecialEnderChest.java

@@ -41,7 +41,7 @@ import org.bukkit.craftbukkit.v1_9_R1.inventory.CraftInventory;
 public class SpecialEnderChest extends InventorySubcontainer implements IInventory, ISpecialEnderChest {
     public List<HumanEntity> transaction = new ArrayList<HumanEntity>();
     public boolean playerOnline = false;
-    private final CraftPlayer owner;
+    private CraftPlayer owner;
     private final InventoryEnderChest enderChest;
     private int maxStack = MAX_STACK;
     private final CraftInventory inventory = new CraftInventory(this);
@@ -60,22 +60,25 @@ public class SpecialEnderChest extends InventorySubcontainer implements IInvento
     }
 
     @Override
-    public boolean inventoryRemovalCheck() {
+    public boolean inventoryRemovalCheck(boolean save) {
-        owner.saveData();
+        boolean offline = transaction.isEmpty() && !playerOnline;
-        return transaction.isEmpty() && !playerOnline;
+        if (offline && save) {
+            owner.saveData();
+        }
+        return offline;
     }
 
     @Override
-    public void setPlayerOnline(Player p) {
+    public void setPlayerOnline(Player player) {
         if (!playerOnline) {
             try {
-                InventoryEnderChest playerEnderChest = ((CraftPlayer) p).getHandle().getEnderChest();
+                owner = (CraftPlayer) player;
+                InventoryEnderChest playerEnderChest = owner.getHandle().getEnderChest();
                 Field field = playerEnderChest.getClass().getField("items");
                 field.setAccessible(true);
                 field.set(playerEnderChest, this.items);
             }
             catch (Exception e) {}
-            p.saveData();
             playerOnline = true;
         }
     }
@@ -83,7 +86,7 @@ public class SpecialEnderChest extends InventorySubcontainer implements IInvento
     @Override
     public boolean setPlayerOffline() {
         playerOnline = false;
-        return inventoryRemovalCheck();
+        return inventoryRemovalCheck(false);
     }
 
     @Override
@@ -99,7 +102,7 @@ public class SpecialEnderChest extends InventorySubcontainer implements IInvento
     @Override
     public void onClose(CraftHumanEntity who) {
         transaction.remove(who);
-        this.inventoryRemovalCheck();
+        this.inventoryRemovalCheck(true);
     }
 
     @Override

src/main/java/com/lishid/openinv/internal/v1_9_R1/SpecialPlayerInventory.java

@@ -49,17 +49,30 @@ public class SpecialPlayerInventory extends PlayerInventory implements ISpecialP
     private void setItemArrays(PlayerInventory inventory, ItemStack[] items, ItemStack[] armor,
             ItemStack[] extraSlots) {
         try {
-            Field field = inventory.getClass().getField("items");
+            // Prepare to remove final modifier
             Field modifiers = Field.class.getDeclaredField("modifiers");
             modifiers.setAccessible(true);
+
+            // Access and replace main inventory array
+            Field field = PlayerInventory.class.getField("items");
             modifiers.setInt(field, field.getModifiers() & ~Modifier.FINAL);
             field.set(inventory, items);
-            field = inventory.getClass().getField("armor");
+
+            // Access and replace armor inventory array
+            field = PlayerInventory.class.getField("armor");
             modifiers.setInt(field, field.getModifiers() & ~Modifier.FINAL);
             field.set(inventory, armor);
-            field = inventory.getClass().getField("extraSlots");
+
+            // Access and replace offhand inventory array
+            field = PlayerInventory.class.getField("extraSlots");
             modifiers.setInt(field, field.getModifiers() & ~Modifier.FINAL);
             field.set(inventory, extraSlots);
+
+            // Access and replace array containing all inventory arrays
+            field = PlayerInventory.class.getDeclaredField("g");
+            field.setAccessible(true);
+            modifiers.setInt(field, field.getModifiers() & ~Modifier.FINAL);
+            field.set(inventory, new ItemStack[][] { items, armor, extraSlots });
         } catch (NoSuchFieldException e) {
             // Unable to set final fields to item arrays, we're screwed. Noisily fail.
             e.printStackTrace();
@@ -76,17 +89,20 @@ public class SpecialPlayerInventory extends PlayerInventory implements ISpecialP
     }
 
     @Override
-    public boolean inventoryRemovalCheck() {
+    public boolean inventoryRemovalCheck(boolean save) {
-        owner.saveData();
+        boolean offline = transaction.isEmpty() && !playerOnline;
-        return transaction.isEmpty() && !playerOnline;
+        if (offline && save) {
+            owner.saveData();
+        }
+        return offline;
     }
 
     @Override
     public void setPlayerOnline(Player player) {
         if (!playerOnline) {
-            CraftPlayer p = (CraftPlayer) player;
+            owner = (CraftPlayer) player;
-            setItemArrays(p.getHandle().inventory, items, armor, extraSlots);
+            this.player = owner.getHandle();
-            p.saveData();
+            setItemArrays(this.player.inventory, items, armor, extraSlots);
             playerOnline = true;
         }
     }
@@ -94,13 +110,13 @@ public class SpecialPlayerInventory extends PlayerInventory implements ISpecialP
     @Override
     public boolean setPlayerOffline() {
         playerOnline = false;
-        return this.inventoryRemovalCheck();
+        return this.inventoryRemovalCheck(false);
     }
 
     @Override
     public void onClose(CraftHumanEntity who) {
         super.onClose(who);
-        this.inventoryRemovalCheck();
+        this.inventoryRemovalCheck(true);
     }
 
     @Override

src/main/resources/plugin.yml

@@ -1,6 +1,6 @@
 name: OpenInv
 main: com.lishid.openinv.OpenInv
-version: 2.3.0
+version: 2.4.1
 author: lishid
 authors: [Jikoo]
 description: >