Addition of paperdoll cache.

Contributed by Sahar.

L2J_Mobius_1.0_Ertheia/java/org/l2jmobius/gameserver/cache/PaperdollCache.java

@@ -0,0 +1,127 @@
+/*
+ * This file is part of the L2J Mobius project.
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package org.l2jmobius.gameserver.cache;
+
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+import java.util.concurrent.ConcurrentHashMap;
+
+import org.l2jmobius.gameserver.data.xml.impl.ArmorSetData;
+import org.l2jmobius.gameserver.model.ArmorSet;
+import org.l2jmobius.gameserver.model.actor.instance.PlayerInstance;
+import org.l2jmobius.gameserver.model.items.instance.ItemInstance;
+import org.l2jmobius.gameserver.model.stats.BaseStat;
+import org.l2jmobius.gameserver.model.stats.Stat;
+
+/**
+ * @author Sahar
+ */
+public final class PaperdollCache
+{
+	private final Set<ItemInstance> _paperdollItems = ConcurrentHashMap.newKeySet();
+	
+	private final Map<BaseStat, Double> _baseStatValues = new ConcurrentHashMap<>();
+	private final Map<Stat, Double> _statValues = new ConcurrentHashMap<>();
+	private int _maxSetEnchant = -1;
+	
+	public Set<ItemInstance> getPaperdollItems()
+	{
+		return _paperdollItems;
+	}
+	
+	public void clearCachedStats()
+	{
+		_baseStatValues.clear();
+		_statValues.clear();
+		
+		clearMaxSetEnchant();
+	}
+	
+	public void clearMaxSetEnchant()
+	{
+		_maxSetEnchant = -1;
+	}
+	
+	public double getBaseStatValue(PlayerInstance player, final BaseStat stat)
+	{
+		final Double baseStatValue = _baseStatValues.get(stat);
+		if (baseStatValue != null)
+		{
+			return baseStatValue;
+		}
+		
+		final Set<ArmorSet> appliedSets = new HashSet<>(2);
+		double value = 0;
+		for (ItemInstance item : _paperdollItems)
+		{
+			for (ArmorSet set : ArmorSetData.getInstance().getSets(item.getId()))
+			{
+				if ((set.getPiecesCountById(player) >= set.getMinimumPieces()) && appliedSets.add(set))
+				{
+					value += set.getStatsBonus(stat);
+				}
+			}
+		}
+		
+		_baseStatValues.put(stat, value);
+		return value;
+	}
+	
+	public int getMaxSetEnchant(PlayerInstance player)
+	{
+		int maxSetEnchant = _maxSetEnchant;
+		if (maxSetEnchant >= 0)
+		{
+			return maxSetEnchant;
+		}
+		
+		maxSetEnchant = 0;
+		for (ItemInstance item : _paperdollItems)
+		{
+			for (ArmorSet set : ArmorSetData.getInstance().getSets(item.getId()))
+			{
+				final int enchantEffect = set.getLowestSetEnchant(player);
+				if (enchantEffect > maxSetEnchant)
+				{
+					maxSetEnchant = enchantEffect;
+				}
+			}
+		}
+		
+		_maxSetEnchant = maxSetEnchant;
+		return maxSetEnchant;
+	}
+	
+	public double getStats(Stat stat)
+	{
+		final Double statValue = _statValues.get(stat);
+		if (statValue != null)
+		{
+			return statValue;
+		}
+		
+		double value = 0;
+		for (ItemInstance item : _paperdollItems)
+		{
+			value += item.getItem().getStats(stat, 0);
+		}
+		
+		_statValues.put(stat, value);
+		return value;
+	}
+}

L2J_Mobius_1.0_Ertheia/java/org/l2jmobius/gameserver/model/itemcontainer/Inventory.java

@@ -33,6 +33,7 @@ import java.util.logging.Logger;
 import org.l2jmobius.Config;
 import org.l2jmobius.commons.database.DatabaseFactory;
 import org.l2jmobius.commons.util.CommonUtil;
+import org.l2jmobius.gameserver.cache.PaperdollCache;
 import org.l2jmobius.gameserver.data.xml.impl.AppearanceItemData;
 import org.l2jmobius.gameserver.data.xml.impl.ArmorSetData;
 import org.l2jmobius.gameserver.datatables.ItemTable;
@@ -123,6 +124,7 @@ public abstract class Inventory extends ItemContainer
 	
 	private final ItemInstance[] _paperdoll;
 	private final List<PaperdollListener> _paperdollListeners;
+	private final PaperdollCache _paperdollCache = new PaperdollCache();
 	
 	// protected to be accessed from child classes only
 	protected int _totalWeight;
@@ -1203,6 +1205,8 @@ public abstract class Inventory extends ItemContainer
 			if (old != null)
 			{
 				_paperdoll[slot] = null;
+				_paperdollCache.getPaperdollItems().remove(old);
+				
 				// Put old item from paperdoll slot to base location
 				old.setItemLocation(getBaseLocation());
 				old.setLastChange(ItemInstance.MODIFIED);
@@ -1233,6 +1237,8 @@ public abstract class Inventory extends ItemContainer
 			if (item != null)
 			{
 				_paperdoll[slot] = item;
+				_paperdollCache.getPaperdollItems().add(item);
+				
 				item.setItemLocation(getEquipLocation(), slot);
 				item.setLastChange(ItemInstance.MODIFIED);
 				_wearedMask |= item.getItem().getItemMask();
@@ -1248,6 +1254,7 @@ public abstract class Inventory extends ItemContainer
 				item.updateDatabase();
 			}
 			
+			_paperdollCache.clearCachedStats();
 			getOwner().getStat().recalculateStats(!getOwner().isPlayer());
 			
 			if (getOwner().isPlayer())
@@ -2120,19 +2127,7 @@ public abstract class Inventory extends ItemContainer
 		}
 		
 		final PlayerInstance player = getOwner().getActingPlayer();
-		int maxSetEnchant = 0;
-		for (ItemInstance item : getPaperdollItems())
-		{
-			for (ArmorSet set : ArmorSetData.getInstance().getSets(item.getId()))
-			{
-				final int enchantEffect = set.getLowestSetEnchant(player);
-				if (enchantEffect > maxSetEnchant)
-				{
-					maxSetEnchant = enchantEffect;
-				}
-			}
-		}
-		return maxSetEnchant;
+		return _paperdollCache.getMaxSetEnchant(player);
 	}
 	
 	public int getWeaponEnchant()
@@ -2196,6 +2191,11 @@ public abstract class Inventory extends ItemContainer
 	@SafeVarargs
 	public final Collection<ItemInstance> getPaperdollItems(Predicate<ItemInstance>... filters)
 	{
+		if (filters.length == 0)
+		{
+			return _paperdollCache.getPaperdollItems();
+		}
+		
 		Predicate<ItemInstance> filter = Objects::nonNull;
 		for (Predicate<ItemInstance> additionalFilter : filters)
 		{
@@ -2216,6 +2216,11 @@ public abstract class Inventory extends ItemContainer
 	@SafeVarargs
 	public final int getPaperdollItemCount(Predicate<ItemInstance>... filters)
 	{
+		if (filters.length == 0)
+		{
+			return _paperdollCache.getPaperdollItems().size();
+		}
+		
 		Predicate<ItemInstance> filter = Objects::nonNull;
 		for (Predicate<ItemInstance> additionalFilter : filters)
 		{
@@ -2232,4 +2237,9 @@ public abstract class Inventory extends ItemContainer
 		}
 		return count;
 	}
+	
+	public PaperdollCache getPaperdollCache()
+	{
+		return _paperdollCache;
+	}
 }

L2J_Mobius_1.0_Ertheia/java/org/l2jmobius/gameserver/model/stats/BaseStat.java

@@ -40,6 +40,8 @@ public enum BaseStat
 	CHA(Stat.STAT_CHA),
 	LUC(Stat.STAT_LUC);
 	
+	private static final BaseStat[] VALUES = BaseStat.values();
+	
 	public static final int MAX_STAT_VALUE = 201;
 	
 	private final double[] _bonus = new double[MAX_STAT_VALUE];
@@ -92,7 +94,7 @@ public enum BaseStat
 	
 	public static BaseStat valueOf(Stat stat)
 	{
-		for (BaseStat baseStat : values())
+		for (BaseStat baseStat : VALUES)
 		{
 			if (baseStat.getStat() == stat)
 			{

L2J_Mobius_1.0_Ertheia/java/org/l2jmobius/gameserver/model/stats/IStatFunction.java

@@ -92,10 +92,7 @@ public interface IStatFunction
 			final Inventory inv = creature.getInventory();
 			if (inv != null)
 			{
-				for (ItemInstance item : inv.getPaperdollItems())
-				{
-					baseValue += item.getItem().getStats(stat, 0);
-				}
+				baseValue += inv.getPaperdollCache().getStats(stat);
 			}
 		}
 		

L2J_Mobius_1.0_Ertheia/java/org/l2jmobius/gameserver/model/stats/finalizers/BaseStatFinalizer.java

@@ -16,15 +16,10 @@
  */
 package org.l2jmobius.gameserver.model.stats.finalizers;
 
-import java.util.HashSet;
 import java.util.OptionalDouble;
-import java.util.Set;
 
-import org.l2jmobius.gameserver.data.xml.impl.ArmorSetData;
-import org.l2jmobius.gameserver.model.ArmorSet;
 import org.l2jmobius.gameserver.model.actor.Creature;
 import org.l2jmobius.gameserver.model.actor.instance.PlayerInstance;
-import org.l2jmobius.gameserver.model.items.instance.ItemInstance;
 import org.l2jmobius.gameserver.model.stats.BaseStat;
 import org.l2jmobius.gameserver.model.stats.IStatFunction;
 import org.l2jmobius.gameserver.model.stats.Stat;
@@ -46,19 +41,9 @@ public class BaseStatFinalizer implements IStatFunction
 		if (creature.isPlayer())
 		{
 			final PlayerInstance player = creature.getActingPlayer();
-			final Set<ArmorSet> appliedSets = new HashSet<>(2);
 			
 			// Armor sets calculation
-			for (ItemInstance item : player.getInventory().getPaperdollItems())
-			{
-				for (ArmorSet set : ArmorSetData.getInstance().getSets(item.getId()))
-				{
-					if ((set.getPiecesCountById(player) >= set.getMinimumPieces()) && appliedSets.add(set))
-					{
-						baseValue += set.getStatsBonus(BaseStat.valueOf(stat));
-					}
-				}
-			}
+			baseValue += player.getInventory().getPaperdollCache().getBaseStatValue(player, BaseStat.valueOf(stat));
 			
 			// Henna calculation
 			baseValue += player.getHennaValue(BaseStat.valueOf(stat));

L2J_Mobius_1.0_Ertheia/java/org/l2jmobius/gameserver/network/clientpackets/RequestEnchantItem.java

@@ -255,6 +255,7 @@ public class RequestEnchantItem implements IClientIncomingPacket
 								}
 							});
 						}
+						player.getInventory().getPaperdollCache().clearMaxSetEnchant();
 						player.broadcastUserInfo(); // update user info
 					}
 					break;

L2J_Mobius_2.5_Underground/java/org/l2jmobius/gameserver/cache/PaperdollCache.java

@@ -0,0 +1,127 @@
+/*
+ * This file is part of the L2J Mobius project.
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package org.l2jmobius.gameserver.cache;
+
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+import java.util.concurrent.ConcurrentHashMap;
+
+import org.l2jmobius.gameserver.data.xml.impl.ArmorSetData;
+import org.l2jmobius.gameserver.model.ArmorSet;
+import org.l2jmobius.gameserver.model.actor.instance.PlayerInstance;
+import org.l2jmobius.gameserver.model.items.instance.ItemInstance;
+import org.l2jmobius.gameserver.model.stats.BaseStat;
+import org.l2jmobius.gameserver.model.stats.Stat;
+
+/**
+ * @author Sahar
+ */
+public final class PaperdollCache
+{
+	private final Set<ItemInstance> _paperdollItems = ConcurrentHashMap.newKeySet();
+	
+	private final Map<BaseStat, Double> _baseStatValues = new ConcurrentHashMap<>();
+	private final Map<Stat, Double> _statValues = new ConcurrentHashMap<>();
+	private int _maxSetEnchant = -1;
+	
+	public Set<ItemInstance> getPaperdollItems()
+	{
+		return _paperdollItems;
+	}
+	
+	public void clearCachedStats()
+	{
+		_baseStatValues.clear();
+		_statValues.clear();
+		
+		clearMaxSetEnchant();
+	}
+	
+	public void clearMaxSetEnchant()
+	{
+		_maxSetEnchant = -1;
+	}
+	
+	public double getBaseStatValue(PlayerInstance player, final BaseStat stat)
+	{
+		final Double baseStatValue = _baseStatValues.get(stat);
+		if (baseStatValue != null)
+		{
+			return baseStatValue;
+		}
+		
+		final Set<ArmorSet> appliedSets = new HashSet<>(2);
+		double value = 0;
+		for (ItemInstance item : _paperdollItems)
+		{
+			for (ArmorSet set : ArmorSetData.getInstance().getSets(item.getId()))
+			{
+				if ((set.getPiecesCountById(player) >= set.getMinimumPieces()) && appliedSets.add(set))
+				{
+					value += set.getStatsBonus(stat);
+				}
+			}
+		}
+		
+		_baseStatValues.put(stat, value);
+		return value;
+	}
+	
+	public int getMaxSetEnchant(PlayerInstance player)
+	{
+		int maxSetEnchant = _maxSetEnchant;
+		if (maxSetEnchant >= 0)
+		{
+			return maxSetEnchant;
+		}
+		
+		maxSetEnchant = 0;
+		for (ItemInstance item : _paperdollItems)
+		{
+			for (ArmorSet set : ArmorSetData.getInstance().getSets(item.getId()))
+			{
+				final int enchantEffect = set.getLowestSetEnchant(player);
+				if (enchantEffect > maxSetEnchant)
+				{
+					maxSetEnchant = enchantEffect;
+				}
+			}
+		}
+		
+		_maxSetEnchant = maxSetEnchant;
+		return maxSetEnchant;
+	}
+	
+	public double getStats(Stat stat)
+	{
+		final Double statValue = _statValues.get(stat);
+		if (statValue != null)
+		{
+			return statValue;
+		}
+		
+		double value = 0;
+		for (ItemInstance item : _paperdollItems)
+		{
+			value += item.getItem().getStats(stat, 0);
+		}
+		
+		_statValues.put(stat, value);
+		return value;
+	}
+}

L2J_Mobius_2.5_Underground/java/org/l2jmobius/gameserver/model/itemcontainer/Inventory.java

@@ -33,6 +33,7 @@ import java.util.logging.Logger;
 import org.l2jmobius.Config;
 import org.l2jmobius.commons.database.DatabaseFactory;
 import org.l2jmobius.commons.util.CommonUtil;
+import org.l2jmobius.gameserver.cache.PaperdollCache;
 import org.l2jmobius.gameserver.data.xml.impl.AppearanceItemData;
 import org.l2jmobius.gameserver.data.xml.impl.ArmorSetData;
 import org.l2jmobius.gameserver.datatables.ItemTable;
@@ -123,6 +124,7 @@ public abstract class Inventory extends ItemContainer
 	
 	private final ItemInstance[] _paperdoll;
 	private final List<PaperdollListener> _paperdollListeners;
+	private final PaperdollCache _paperdollCache = new PaperdollCache();
 	
 	// protected to be accessed from child classes only
 	protected int _totalWeight;
@@ -1209,6 +1211,8 @@ public abstract class Inventory extends ItemContainer
 			if (old != null)
 			{
 				_paperdoll[slot] = null;
+				_paperdollCache.getPaperdollItems().remove(old);
+				
 				// Put old item from paperdoll slot to base location
 				old.setItemLocation(getBaseLocation());
 				old.setLastChange(ItemInstance.MODIFIED);
@@ -1239,6 +1243,8 @@ public abstract class Inventory extends ItemContainer
 			if (item != null)
 			{
 				_paperdoll[slot] = item;
+				_paperdollCache.getPaperdollItems().add(item);
+				
 				item.setItemLocation(getEquipLocation(), slot);
 				item.setLastChange(ItemInstance.MODIFIED);
 				_wearedMask |= item.getItem().getItemMask();
@@ -1254,6 +1260,7 @@ public abstract class Inventory extends ItemContainer
 				item.updateDatabase();
 			}
 			
+			_paperdollCache.clearCachedStats();
 			getOwner().getStat().recalculateStats(!getOwner().isPlayer());
 			
 			if (getOwner().isPlayer())
@@ -2126,19 +2133,7 @@ public abstract class Inventory extends ItemContainer
 		}
 		
 		final PlayerInstance player = getOwner().getActingPlayer();
-		int maxSetEnchant = 0;
-		for (ItemInstance item : getPaperdollItems())
-		{
-			for (ArmorSet set : ArmorSetData.getInstance().getSets(item.getId()))
-			{
-				final int enchantEffect = set.getLowestSetEnchant(player);
-				if (enchantEffect > maxSetEnchant)
-				{
-					maxSetEnchant = enchantEffect;
-				}
-			}
-		}
-		return maxSetEnchant;
+		return _paperdollCache.getMaxSetEnchant(player);
 	}
 	
 	public int getWeaponEnchant()
@@ -2202,6 +2197,11 @@ public abstract class Inventory extends ItemContainer
 	@SafeVarargs
 	public final Collection<ItemInstance> getPaperdollItems(Predicate<ItemInstance>... filters)
 	{
+		if (filters.length == 0)
+		{
+			return _paperdollCache.getPaperdollItems();
+		}
+		
 		Predicate<ItemInstance> filter = Objects::nonNull;
 		for (Predicate<ItemInstance> additionalFilter : filters)
 		{
@@ -2222,6 +2222,11 @@ public abstract class Inventory extends ItemContainer
 	@SafeVarargs
 	public final int getPaperdollItemCount(Predicate<ItemInstance>... filters)
 	{
+		if (filters.length == 0)
+		{
+			return _paperdollCache.getPaperdollItems().size();
+		}
+		
 		Predicate<ItemInstance> filter = Objects::nonNull;
 		for (Predicate<ItemInstance> additionalFilter : filters)
 		{
@@ -2238,4 +2243,9 @@ public abstract class Inventory extends ItemContainer
 		}
 		return count;
 	}
+	
+	public PaperdollCache getPaperdollCache()
+	{
+		return _paperdollCache;
+	}
 }

L2J_Mobius_2.5_Underground/java/org/l2jmobius/gameserver/model/stats/BaseStat.java

@@ -40,6 +40,8 @@ public enum BaseStat
 	CHA(Stat.STAT_CHA),
 	LUC(Stat.STAT_LUC);
 	
+	private static final BaseStat[] VALUES = BaseStat.values();
+	
 	public static final int MAX_STAT_VALUE = 201;
 	
 	private final double[] _bonus = new double[MAX_STAT_VALUE];
@@ -92,7 +94,7 @@ public enum BaseStat
 	
 	public static BaseStat valueOf(Stat stat)
 	{
-		for (BaseStat baseStat : values())
+		for (BaseStat baseStat : VALUES)
 		{
 			if (baseStat.getStat() == stat)
 			{

L2J_Mobius_2.5_Underground/java/org/l2jmobius/gameserver/model/stats/IStatFunction.java

@@ -92,10 +92,7 @@ public interface IStatFunction
 			final Inventory inv = creature.getInventory();
 			if (inv != null)
 			{
-				for (ItemInstance item : inv.getPaperdollItems())
-				{
-					baseValue += item.getItem().getStats(stat, 0);
-				}
+				baseValue += inv.getPaperdollCache().getStats(stat);
 			}
 		}
 		

L2J_Mobius_2.5_Underground/java/org/l2jmobius/gameserver/model/stats/finalizers/BaseStatFinalizer.java

@@ -16,15 +16,10 @@
  */
 package org.l2jmobius.gameserver.model.stats.finalizers;
 
-import java.util.HashSet;
 import java.util.OptionalDouble;
-import java.util.Set;
 
-import org.l2jmobius.gameserver.data.xml.impl.ArmorSetData;
-import org.l2jmobius.gameserver.model.ArmorSet;
 import org.l2jmobius.gameserver.model.actor.Creature;
 import org.l2jmobius.gameserver.model.actor.instance.PlayerInstance;
-import org.l2jmobius.gameserver.model.items.instance.ItemInstance;
 import org.l2jmobius.gameserver.model.stats.BaseStat;
 import org.l2jmobius.gameserver.model.stats.IStatFunction;
 import org.l2jmobius.gameserver.model.stats.Stat;
@@ -46,19 +41,9 @@ public class BaseStatFinalizer implements IStatFunction
 		if (creature.isPlayer())
 		{
 			final PlayerInstance player = creature.getActingPlayer();
-			final Set<ArmorSet> appliedSets = new HashSet<>(2);
 			
 			// Armor sets calculation
-			for (ItemInstance item : player.getInventory().getPaperdollItems())
-			{
-				for (ArmorSet set : ArmorSetData.getInstance().getSets(item.getId()))
-				{
-					if ((set.getPiecesCountById(player) >= set.getMinimumPieces()) && appliedSets.add(set))
-					{
-						baseValue += set.getStatsBonus(BaseStat.valueOf(stat));
-					}
-				}
-			}
+			baseValue += player.getInventory().getPaperdollCache().getBaseStatValue(player, BaseStat.valueOf(stat));
 			
 			// Henna calculation
 			baseValue += player.getHennaValue(BaseStat.valueOf(stat));

L2J_Mobius_2.5_Underground/java/org/l2jmobius/gameserver/network/clientpackets/RequestEnchantItem.java

@@ -255,6 +255,7 @@ public class RequestEnchantItem implements IClientIncomingPacket
 								}
 							});
 						}
+						player.getInventory().getPaperdollCache().clearMaxSetEnchant();
 						player.broadcastUserInfo(); // update user info
 					}
 					break;

L2J_Mobius_3.0_Helios/java/org/l2jmobius/gameserver/cache/PaperdollCache.java

@@ -0,0 +1,127 @@
+/*
+ * This file is part of the L2J Mobius project.
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package org.l2jmobius.gameserver.cache;
+
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+import java.util.concurrent.ConcurrentHashMap;
+
+import org.l2jmobius.gameserver.data.xml.impl.ArmorSetData;
+import org.l2jmobius.gameserver.model.ArmorSet;
+import org.l2jmobius.gameserver.model.actor.instance.PlayerInstance;
+import org.l2jmobius.gameserver.model.items.instance.ItemInstance;
+import org.l2jmobius.gameserver.model.stats.BaseStat;
+import org.l2jmobius.gameserver.model.stats.Stat;
+
+/**
+ * @author Sahar
+ */
+public final class PaperdollCache
+{
+	private final Set<ItemInstance> _paperdollItems = ConcurrentHashMap.newKeySet();
+	
+	private final Map<BaseStat, Double> _baseStatValues = new ConcurrentHashMap<>();
+	private final Map<Stat, Double> _statValues = new ConcurrentHashMap<>();
+	private int _maxSetEnchant = -1;
+	
+	public Set<ItemInstance> getPaperdollItems()
+	{
+		return _paperdollItems;
+	}
+	
+	public void clearCachedStats()
+	{
+		_baseStatValues.clear();
+		_statValues.clear();
+		
+		clearMaxSetEnchant();
+	}
+	
+	public void clearMaxSetEnchant()
+	{
+		_maxSetEnchant = -1;
+	}
+	
+	public double getBaseStatValue(PlayerInstance player, final BaseStat stat)
+	{
+		final Double baseStatValue = _baseStatValues.get(stat);
+		if (baseStatValue != null)
+		{
+			return baseStatValue;
+		}
+		
+		final Set<ArmorSet> appliedSets = new HashSet<>(2);
+		double value = 0;
+		for (ItemInstance item : _paperdollItems)
+		{
+			for (ArmorSet set : ArmorSetData.getInstance().getSets(item.getId()))
+			{
+				if ((set.getPiecesCountById(player) >= set.getMinimumPieces()) && appliedSets.add(set))
+				{
+					value += set.getStatsBonus(stat);
+				}
+			}
+		}
+		
+		_baseStatValues.put(stat, value);
+		return value;
+	}
+	
+	public int getMaxSetEnchant(PlayerInstance player)
+	{
+		int maxSetEnchant = _maxSetEnchant;
+		if (maxSetEnchant >= 0)
+		{
+			return maxSetEnchant;
+		}
+		
+		maxSetEnchant = 0;
+		for (ItemInstance item : _paperdollItems)
+		{
+			for (ArmorSet set : ArmorSetData.getInstance().getSets(item.getId()))
+			{
+				final int enchantEffect = set.getLowestSetEnchant(player);
+				if (enchantEffect > maxSetEnchant)
+				{
+					maxSetEnchant = enchantEffect;
+				}
+			}
+		}
+		
+		_maxSetEnchant = maxSetEnchant;
+		return maxSetEnchant;
+	}
+	
+	public double getStats(Stat stat)
+	{
+		final Double statValue = _statValues.get(stat);
+		if (statValue != null)
+		{
+			return statValue;
+		}
+		
+		double value = 0;
+		for (ItemInstance item : _paperdollItems)
+		{
+			value += item.getItem().getStats(stat, 0);
+		}
+		
+		_statValues.put(stat, value);
+		return value;
+	}
+}

L2J_Mobius_3.0_Helios/java/org/l2jmobius/gameserver/model/itemcontainer/Inventory.java

@@ -33,6 +33,7 @@ import java.util.logging.Logger;
 import org.l2jmobius.Config;
 import org.l2jmobius.commons.database.DatabaseFactory;
 import org.l2jmobius.commons.util.CommonUtil;
+import org.l2jmobius.gameserver.cache.PaperdollCache;
 import org.l2jmobius.gameserver.data.xml.impl.AppearanceItemData;
 import org.l2jmobius.gameserver.data.xml.impl.ArmorSetData;
 import org.l2jmobius.gameserver.datatables.ItemTable;
@@ -123,6 +124,7 @@ public abstract class Inventory extends ItemContainer
 	
 	private final ItemInstance[] _paperdoll;
 	private final List<PaperdollListener> _paperdollListeners;
+	private final PaperdollCache _paperdollCache = new PaperdollCache();
 	
 	// protected to be accessed from child classes only
 	protected int _totalWeight;
@@ -1209,6 +1211,8 @@ public abstract class Inventory extends ItemContainer
 			if (old != null)
 			{
 				_paperdoll[slot] = null;
+				_paperdollCache.getPaperdollItems().remove(old);
+				
 				// Put old item from paperdoll slot to base location
 				old.setItemLocation(getBaseLocation());
 				old.setLastChange(ItemInstance.MODIFIED);
@@ -1239,6 +1243,8 @@ public abstract class Inventory extends ItemContainer
 			if (item != null)
 			{
 				_paperdoll[slot] = item;
+				_paperdollCache.getPaperdollItems().add(item);
+				
 				item.setItemLocation(getEquipLocation(), slot);
 				item.setLastChange(ItemInstance.MODIFIED);
 				_wearedMask |= item.getItem().getItemMask();
@@ -1254,6 +1260,7 @@ public abstract class Inventory extends ItemContainer
 				item.updateDatabase();
 			}
 			
+			_paperdollCache.clearCachedStats();
 			getOwner().getStat().recalculateStats(!getOwner().isPlayer());
 			
 			if (getOwner().isPlayer())
@@ -2126,19 +2133,7 @@ public abstract class Inventory extends ItemContainer
 		}
 		
 		final PlayerInstance player = getOwner().getActingPlayer();
-		int maxSetEnchant = 0;
-		for (ItemInstance item : getPaperdollItems())
-		{
-			for (ArmorSet set : ArmorSetData.getInstance().getSets(item.getId()))
-			{
-				final int enchantEffect = set.getLowestSetEnchant(player);
-				if (enchantEffect > maxSetEnchant)
-				{
-					maxSetEnchant = enchantEffect;
-				}
-			}
-		}
-		return maxSetEnchant;
+		return _paperdollCache.getMaxSetEnchant(player);
 	}
 	
 	public int getWeaponEnchant()
@@ -2202,6 +2197,11 @@ public abstract class Inventory extends ItemContainer
 	@SafeVarargs
 	public final Collection<ItemInstance> getPaperdollItems(Predicate<ItemInstance>... filters)
 	{
+		if (filters.length == 0)
+		{
+			return _paperdollCache.getPaperdollItems();
+		}
+		
 		Predicate<ItemInstance> filter = Objects::nonNull;
 		for (Predicate<ItemInstance> additionalFilter : filters)
 		{
@@ -2222,6 +2222,11 @@ public abstract class Inventory extends ItemContainer
 	@SafeVarargs
 	public final int getPaperdollItemCount(Predicate<ItemInstance>... filters)
 	{
+		if (filters.length == 0)
+		{
+			return _paperdollCache.getPaperdollItems().size();
+		}
+		
 		Predicate<ItemInstance> filter = Objects::nonNull;
 		for (Predicate<ItemInstance> additionalFilter : filters)
 		{
@@ -2238,4 +2243,9 @@ public abstract class Inventory extends ItemContainer
 		}
 		return count;
 	}
+	
+	public PaperdollCache getPaperdollCache()
+	{
+		return _paperdollCache;
+	}
 }

L2J_Mobius_3.0_Helios/java/org/l2jmobius/gameserver/model/stats/BaseStat.java

@@ -40,6 +40,8 @@ public enum BaseStat
 	CHA(Stat.STAT_CHA),
 	LUC(Stat.STAT_LUC);
 	
+	private static final BaseStat[] VALUES = BaseStat.values();
+	
 	public static final int MAX_STAT_VALUE = 201;
 	
 	private final double[] _bonus = new double[MAX_STAT_VALUE];
@@ -92,7 +94,7 @@ public enum BaseStat
 	
 	public static BaseStat valueOf(Stat stat)
 	{
-		for (BaseStat baseStat : values())
+		for (BaseStat baseStat : VALUES)
 		{
 			if (baseStat.getStat() == stat)
 			{

L2J_Mobius_3.0_Helios/java/org/l2jmobius/gameserver/model/stats/IStatFunction.java

@@ -92,10 +92,7 @@ public interface IStatFunction
 			final Inventory inv = creature.getInventory();
 			if (inv != null)
 			{
-				for (ItemInstance item : inv.getPaperdollItems())
-				{
-					baseValue += item.getItem().getStats(stat, 0);
-				}
+				baseValue += inv.getPaperdollCache().getStats(stat);
 			}
 		}
 		

L2J_Mobius_3.0_Helios/java/org/l2jmobius/gameserver/model/stats/finalizers/BaseStatFinalizer.java

@@ -16,15 +16,10 @@
  */
 package org.l2jmobius.gameserver.model.stats.finalizers;
 
-import java.util.HashSet;
 import java.util.OptionalDouble;
-import java.util.Set;
 
-import org.l2jmobius.gameserver.data.xml.impl.ArmorSetData;
-import org.l2jmobius.gameserver.model.ArmorSet;
 import org.l2jmobius.gameserver.model.actor.Creature;
 import org.l2jmobius.gameserver.model.actor.instance.PlayerInstance;
-import org.l2jmobius.gameserver.model.items.instance.ItemInstance;
 import org.l2jmobius.gameserver.model.stats.BaseStat;
 import org.l2jmobius.gameserver.model.stats.IStatFunction;
 import org.l2jmobius.gameserver.model.stats.Stat;
@@ -46,19 +41,9 @@ public class BaseStatFinalizer implements IStatFunction
 		if (creature.isPlayer())
 		{
 			final PlayerInstance player = creature.getActingPlayer();
-			final Set<ArmorSet> appliedSets = new HashSet<>(2);
 			
 			// Armor sets calculation
-			for (ItemInstance item : player.getInventory().getPaperdollItems())
-			{
-				for (ArmorSet set : ArmorSetData.getInstance().getSets(item.getId()))
-				{
-					if ((set.getPiecesCountById(player) >= set.getMinimumPieces()) && appliedSets.add(set))
-					{
-						baseValue += set.getStatsBonus(BaseStat.valueOf(stat));
-					}
-				}
-			}
+			baseValue += player.getInventory().getPaperdollCache().getBaseStatValue(player, BaseStat.valueOf(stat));
 			
 			// Henna calculation
 			baseValue += player.getHennaValue(BaseStat.valueOf(stat));

L2J_Mobius_3.0_Helios/java/org/l2jmobius/gameserver/network/clientpackets/RequestEnchantItem.java

@@ -255,6 +255,7 @@ public class RequestEnchantItem implements IClientIncomingPacket
 								}
 							});
 						}
+						player.getInventory().getPaperdollCache().clearMaxSetEnchant();
 						player.broadcastUserInfo(); // update user info
 					}
 					break;

L2J_Mobius_4.0_GrandCrusade/java/org/l2jmobius/gameserver/cache/PaperdollCache.java

@@ -0,0 +1,127 @@
+/*
+ * This file is part of the L2J Mobius project.
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package org.l2jmobius.gameserver.cache;
+
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+import java.util.concurrent.ConcurrentHashMap;
+
+import org.l2jmobius.gameserver.data.xml.impl.ArmorSetData;
+import org.l2jmobius.gameserver.model.ArmorSet;
+import org.l2jmobius.gameserver.model.actor.instance.PlayerInstance;
+import org.l2jmobius.gameserver.model.items.instance.ItemInstance;
+import org.l2jmobius.gameserver.model.stats.BaseStat;
+import org.l2jmobius.gameserver.model.stats.Stat;
+
+/**
+ * @author Sahar
+ */
+public final class PaperdollCache
+{
+	private final Set<ItemInstance> _paperdollItems = ConcurrentHashMap.newKeySet();
+	
+	private final Map<BaseStat, Double> _baseStatValues = new ConcurrentHashMap<>();
+	private final Map<Stat, Double> _statValues = new ConcurrentHashMap<>();
+	private int _maxSetEnchant = -1;
+	
+	public Set<ItemInstance> getPaperdollItems()
+	{
+		return _paperdollItems;
+	}
+	
+	public void clearCachedStats()
+	{
+		_baseStatValues.clear();
+		_statValues.clear();
+		
+		clearMaxSetEnchant();
+	}
+	
+	public void clearMaxSetEnchant()
+	{
+		_maxSetEnchant = -1;
+	}
+	
+	public double getBaseStatValue(PlayerInstance player, final BaseStat stat)
+	{
+		final Double baseStatValue = _baseStatValues.get(stat);
+		if (baseStatValue != null)
+		{
+			return baseStatValue;
+		}
+		
+		final Set<ArmorSet> appliedSets = new HashSet<>(2);
+		double value = 0;
+		for (ItemInstance item : _paperdollItems)
+		{
+			for (ArmorSet set : ArmorSetData.getInstance().getSets(item.getId()))
+			{
+				if ((set.getPiecesCountById(player) >= set.getMinimumPieces()) && appliedSets.add(set))
+				{
+					value += set.getStatsBonus(stat);
+				}
+			}
+		}
+		
+		_baseStatValues.put(stat, value);
+		return value;
+	}
+	
+	public int getMaxSetEnchant(PlayerInstance player)
+	{
+		int maxSetEnchant = _maxSetEnchant;
+		if (maxSetEnchant >= 0)
+		{
+			return maxSetEnchant;
+		}
+		
+		maxSetEnchant = 0;
+		for (ItemInstance item : _paperdollItems)
+		{
+			for (ArmorSet set : ArmorSetData.getInstance().getSets(item.getId()))
+			{
+				final int enchantEffect = set.getLowestSetEnchant(player);
+				if (enchantEffect > maxSetEnchant)
+				{
+					maxSetEnchant = enchantEffect;
+				}
+			}
+		}
+		
+		_maxSetEnchant = maxSetEnchant;
+		return maxSetEnchant;
+	}
+	
+	public double getStats(Stat stat)
+	{
+		final Double statValue = _statValues.get(stat);
+		if (statValue != null)
+		{
+			return statValue;
+		}
+		
+		double value = 0;
+		for (ItemInstance item : _paperdollItems)
+		{
+			value += item.getItem().getStats(stat, 0);
+		}
+		
+		_statValues.put(stat, value);
+		return value;
+	}
+}

L2J_Mobius_4.0_GrandCrusade/java/org/l2jmobius/gameserver/model/itemcontainer/Inventory.java

@@ -33,6 +33,7 @@ import java.util.logging.Logger;
 import org.l2jmobius.Config;
 import org.l2jmobius.commons.database.DatabaseFactory;
 import org.l2jmobius.commons.util.CommonUtil;
+import org.l2jmobius.gameserver.cache.PaperdollCache;
 import org.l2jmobius.gameserver.data.xml.impl.AppearanceItemData;
 import org.l2jmobius.gameserver.data.xml.impl.ArmorSetData;
 import org.l2jmobius.gameserver.datatables.ItemTable;
@@ -123,6 +124,7 @@ public abstract class Inventory extends ItemContainer
 	
 	private final ItemInstance[] _paperdoll;
 	private final List<PaperdollListener> _paperdollListeners;
+	private final PaperdollCache _paperdollCache = new PaperdollCache();
 	
 	// protected to be accessed from child classes only
 	protected int _totalWeight;
@@ -1209,6 +1211,8 @@ public abstract class Inventory extends ItemContainer
 			if (old != null)
 			{
 				_paperdoll[slot] = null;
+				_paperdollCache.getPaperdollItems().remove(old);
+				
 				// Put old item from paperdoll slot to base location
 				old.setItemLocation(getBaseLocation());
 				old.setLastChange(ItemInstance.MODIFIED);
@@ -1239,6 +1243,8 @@ public abstract class Inventory extends ItemContainer
 			if (item != null)
 			{
 				_paperdoll[slot] = item;
+				_paperdollCache.getPaperdollItems().add(item);
+				
 				item.setItemLocation(getEquipLocation(), slot);
 				item.setLastChange(ItemInstance.MODIFIED);
 				_wearedMask |= item.getItem().getItemMask();
@@ -1254,6 +1260,7 @@ public abstract class Inventory extends ItemContainer
 				item.updateDatabase();
 			}
 			
+			_paperdollCache.clearCachedStats();
 			getOwner().getStat().recalculateStats(!getOwner().isPlayer());
 			
 			if (getOwner().isPlayer())
@@ -2126,19 +2133,7 @@ public abstract class Inventory extends ItemContainer
 		}
 		
 		final PlayerInstance player = getOwner().getActingPlayer();
-		int maxSetEnchant = 0;
-		for (ItemInstance item : getPaperdollItems())
-		{
-			for (ArmorSet set : ArmorSetData.getInstance().getSets(item.getId()))
-			{
-				final int enchantEffect = set.getLowestSetEnchant(player);
-				if (enchantEffect > maxSetEnchant)
-				{
-					maxSetEnchant = enchantEffect;
-				}
-			}
-		}
-		return maxSetEnchant;
+		return _paperdollCache.getMaxSetEnchant(player);
 	}
 	
 	public int getWeaponEnchant()
@@ -2202,6 +2197,11 @@ public abstract class Inventory extends ItemContainer
 	@SafeVarargs
 	public final Collection<ItemInstance> getPaperdollItems(Predicate<ItemInstance>... filters)
 	{
+		if (filters.length == 0)
+		{
+			return _paperdollCache.getPaperdollItems();
+		}
+		
 		Predicate<ItemInstance> filter = Objects::nonNull;
 		for (Predicate<ItemInstance> additionalFilter : filters)
 		{
@@ -2222,6 +2222,11 @@ public abstract class Inventory extends ItemContainer
 	@SafeVarargs
 	public final int getPaperdollItemCount(Predicate<ItemInstance>... filters)
 	{
+		if (filters.length == 0)
+		{
+			return _paperdollCache.getPaperdollItems().size();
+		}
+		
 		Predicate<ItemInstance> filter = Objects::nonNull;
 		for (Predicate<ItemInstance> additionalFilter : filters)
 		{
@@ -2238,4 +2243,9 @@ public abstract class Inventory extends ItemContainer
 		}
 		return count;
 	}
+	
+	public PaperdollCache getPaperdollCache()
+	{
+		return _paperdollCache;
+	}
 }

L2J_Mobius_4.0_GrandCrusade/java/org/l2jmobius/gameserver/model/stats/BaseStat.java

@@ -40,6 +40,8 @@ public enum BaseStat
 	CHA(Stat.STAT_CHA),
 	LUC(Stat.STAT_LUC);
 	
+	private static final BaseStat[] VALUES = BaseStat.values();
+	
 	public static final int MAX_STAT_VALUE = 201;
 	
 	private final double[] _bonus = new double[MAX_STAT_VALUE];
@@ -92,7 +94,7 @@ public enum BaseStat
 	
 	public static BaseStat valueOf(Stat stat)
 	{
-		for (BaseStat baseStat : values())
+		for (BaseStat baseStat : VALUES)
 		{
 			if (baseStat.getStat() == stat)
 			{

L2J_Mobius_4.0_GrandCrusade/java/org/l2jmobius/gameserver/model/stats/IStatFunction.java

@@ -92,10 +92,7 @@ public interface IStatFunction
 			final Inventory inv = creature.getInventory();
 			if (inv != null)
 			{
-				for (ItemInstance item : inv.getPaperdollItems())
-				{
-					baseValue += item.getItem().getStats(stat, 0);
-				}
+				baseValue += inv.getPaperdollCache().getStats(stat);
 			}
 		}
 		

L2J_Mobius_4.0_GrandCrusade/java/org/l2jmobius/gameserver/model/stats/finalizers/BaseStatFinalizer.java

@@ -16,15 +16,10 @@
  */
 package org.l2jmobius.gameserver.model.stats.finalizers;
 
-import java.util.HashSet;
 import java.util.OptionalDouble;
-import java.util.Set;
 
-import org.l2jmobius.gameserver.data.xml.impl.ArmorSetData;
-import org.l2jmobius.gameserver.model.ArmorSet;
 import org.l2jmobius.gameserver.model.actor.Creature;
 import org.l2jmobius.gameserver.model.actor.instance.PlayerInstance;
-import org.l2jmobius.gameserver.model.items.instance.ItemInstance;
 import org.l2jmobius.gameserver.model.stats.BaseStat;
 import org.l2jmobius.gameserver.model.stats.IStatFunction;
 import org.l2jmobius.gameserver.model.stats.Stat;
@@ -46,19 +41,9 @@ public class BaseStatFinalizer implements IStatFunction
 		if (creature.isPlayer())
 		{
 			final PlayerInstance player = creature.getActingPlayer();
-			final Set<ArmorSet> appliedSets = new HashSet<>(2);
 			
 			// Armor sets calculation
-			for (ItemInstance item : player.getInventory().getPaperdollItems())
-			{
-				for (ArmorSet set : ArmorSetData.getInstance().getSets(item.getId()))
-				{
-					if ((set.getPiecesCountById(player) >= set.getMinimumPieces()) && appliedSets.add(set))
-					{
-						baseValue += set.getStatsBonus(BaseStat.valueOf(stat));
-					}
-				}
-			}
+			baseValue += player.getInventory().getPaperdollCache().getBaseStatValue(player, BaseStat.valueOf(stat));
 			
 			// Henna calculation
 			baseValue += player.getHennaValue(BaseStat.valueOf(stat));

L2J_Mobius_4.0_GrandCrusade/java/org/l2jmobius/gameserver/network/clientpackets/RequestEnchantItem.java

@@ -255,6 +255,7 @@ public class RequestEnchantItem implements IClientIncomingPacket
 								}
 							});
 						}
+						player.getInventory().getPaperdollCache().clearMaxSetEnchant();
 						player.broadcastUserInfo(); // update user info
 					}
 					break;

L2J_Mobius_5.0_Salvation/java/org/l2jmobius/gameserver/cache/PaperdollCache.java

@@ -0,0 +1,127 @@
+/*
+ * This file is part of the L2J Mobius project.
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package org.l2jmobius.gameserver.cache;
+
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+import java.util.concurrent.ConcurrentHashMap;
+
+import org.l2jmobius.gameserver.data.xml.impl.ArmorSetData;
+import org.l2jmobius.gameserver.model.ArmorSet;
+import org.l2jmobius.gameserver.model.actor.instance.PlayerInstance;
+import org.l2jmobius.gameserver.model.items.instance.ItemInstance;
+import org.l2jmobius.gameserver.model.stats.BaseStat;
+import org.l2jmobius.gameserver.model.stats.Stat;
+
+/**
+ * @author Sahar
+ */
+public final class PaperdollCache
+{
+	private final Set<ItemInstance> _paperdollItems = ConcurrentHashMap.newKeySet();
+	
+	private final Map<BaseStat, Double> _baseStatValues = new ConcurrentHashMap<>();
+	private final Map<Stat, Double> _statValues = new ConcurrentHashMap<>();
+	private int _maxSetEnchant = -1;
+	
+	public Set<ItemInstance> getPaperdollItems()
+	{
+		return _paperdollItems;
+	}
+	
+	public void clearCachedStats()
+	{
+		_baseStatValues.clear();
+		_statValues.clear();
+		
+		clearMaxSetEnchant();
+	}
+	
+	public void clearMaxSetEnchant()
+	{
+		_maxSetEnchant = -1;
+	}
+	
+	public double getBaseStatValue(PlayerInstance player, final BaseStat stat)
+	{
+		final Double baseStatValue = _baseStatValues.get(stat);
+		if (baseStatValue != null)
+		{
+			return baseStatValue;
+		}
+		
+		final Set<ArmorSet> appliedSets = new HashSet<>(2);
+		double value = 0;
+		for (ItemInstance item : _paperdollItems)
+		{
+			for (ArmorSet set : ArmorSetData.getInstance().getSets(item.getId()))
+			{
+				if ((set.getPiecesCountById(player) >= set.getMinimumPieces()) && appliedSets.add(set))
+				{
+					value += set.getStatsBonus(stat);
+				}
+			}
+		}
+		
+		_baseStatValues.put(stat, value);
+		return value;
+	}
+	
+	public int getMaxSetEnchant(PlayerInstance player)
+	{
+		int maxSetEnchant = _maxSetEnchant;
+		if (maxSetEnchant >= 0)
+		{
+			return maxSetEnchant;
+		}
+		
+		maxSetEnchant = 0;
+		for (ItemInstance item : _paperdollItems)
+		{
+			for (ArmorSet set : ArmorSetData.getInstance().getSets(item.getId()))
+			{
+				final int enchantEffect = set.getLowestSetEnchant(player);
+				if (enchantEffect > maxSetEnchant)
+				{
+					maxSetEnchant = enchantEffect;
+				}
+			}
+		}
+		
+		_maxSetEnchant = maxSetEnchant;
+		return maxSetEnchant;
+	}
+	
+	public double getStats(Stat stat)
+	{
+		final Double statValue = _statValues.get(stat);
+		if (statValue != null)
+		{
+			return statValue;
+		}
+		
+		double value = 0;
+		for (ItemInstance item : _paperdollItems)
+		{
+			value += item.getItem().getStats(stat, 0);
+		}
+		
+		_statValues.put(stat, value);
+		return value;
+	}
+}

L2J_Mobius_5.0_Salvation/java/org/l2jmobius/gameserver/model/itemcontainer/Inventory.java

@@ -33,6 +33,7 @@ import java.util.logging.Logger;
 import org.l2jmobius.Config;
 import org.l2jmobius.commons.database.DatabaseFactory;
 import org.l2jmobius.commons.util.CommonUtil;
+import org.l2jmobius.gameserver.cache.PaperdollCache;
 import org.l2jmobius.gameserver.data.xml.impl.AppearanceItemData;
 import org.l2jmobius.gameserver.data.xml.impl.ArmorSetData;
 import org.l2jmobius.gameserver.datatables.ItemTable;
@@ -128,6 +129,7 @@ public abstract class Inventory extends ItemContainer
 	
 	private final ItemInstance[] _paperdoll;
 	private final List<PaperdollListener> _paperdollListeners;
+	private final PaperdollCache _paperdollCache = new PaperdollCache();
 	
 	// protected to be accessed from child classes only
 	protected int _totalWeight;
@@ -1238,6 +1240,8 @@ public abstract class Inventory extends ItemContainer
 			if (old != null)
 			{
 				_paperdoll[slot] = null;
+				_paperdollCache.getPaperdollItems().remove(old);
+				
 				// Put old item from paperdoll slot to base location
 				old.setItemLocation(getBaseLocation());
 				old.setLastChange(ItemInstance.MODIFIED);
@@ -1268,6 +1272,8 @@ public abstract class Inventory extends ItemContainer
 			if (item != null)
 			{
 				_paperdoll[slot] = item;
+				_paperdollCache.getPaperdollItems().add(item);
+				
 				item.setItemLocation(getEquipLocation(), slot);
 				item.setLastChange(ItemInstance.MODIFIED);
 				_wearedMask |= item.getItem().getItemMask();
@@ -1283,6 +1289,7 @@ public abstract class Inventory extends ItemContainer
 				item.updateDatabase();
 			}
 			
+			_paperdollCache.clearCachedStats();
 			getOwner().getStat().recalculateStats(!getOwner().isPlayer());
 			
 			if (getOwner().isPlayer())
@@ -2139,19 +2146,7 @@ public abstract class Inventory extends ItemContainer
 		}
 		
 		final PlayerInstance player = getOwner().getActingPlayer();
-		int maxSetEnchant = 0;
-		for (ItemInstance item : getPaperdollItems())
-		{
-			for (ArmorSet set : ArmorSetData.getInstance().getSets(item.getId()))
-			{
-				final int enchantEffect = set.getLowestSetEnchant(player);
-				if (enchantEffect > maxSetEnchant)
-				{
-					maxSetEnchant = enchantEffect;
-				}
-			}
-		}
-		return maxSetEnchant;
+		return _paperdollCache.getMaxSetEnchant(player);
 	}
 	
 	public int getWeaponEnchant()
@@ -2215,6 +2210,11 @@ public abstract class Inventory extends ItemContainer
 	@SafeVarargs
 	public final Collection<ItemInstance> getPaperdollItems(Predicate<ItemInstance>... filters)
 	{
+		if (filters.length == 0)
+		{
+			return _paperdollCache.getPaperdollItems();
+		}
+		
 		Predicate<ItemInstance> filter = Objects::nonNull;
 		for (Predicate<ItemInstance> additionalFilter : filters)
 		{
@@ -2235,6 +2235,11 @@ public abstract class Inventory extends ItemContainer
 	@SafeVarargs
 	public final int getPaperdollItemCount(Predicate<ItemInstance>... filters)
 	{
+		if (filters.length == 0)
+		{
+			return _paperdollCache.getPaperdollItems().size();
+		}
+		
 		Predicate<ItemInstance> filter = Objects::nonNull;
 		for (Predicate<ItemInstance> additionalFilter : filters)
 		{
@@ -2251,4 +2256,9 @@ public abstract class Inventory extends ItemContainer
 		}
 		return count;
 	}
+	
+	public PaperdollCache getPaperdollCache()
+	{
+		return _paperdollCache;
+	}
 }

L2J_Mobius_5.0_Salvation/java/org/l2jmobius/gameserver/model/stats/BaseStat.java

@@ -40,6 +40,8 @@ public enum BaseStat
 	CHA(Stat.STAT_CHA),
 	LUC(Stat.STAT_LUC);
 	
+	private static final BaseStat[] VALUES = BaseStat.values();
+	
 	public static final int MAX_STAT_VALUE = 201;
 	
 	private final double[] _bonus = new double[MAX_STAT_VALUE];
@@ -92,7 +94,7 @@ public enum BaseStat
 	
 	public static BaseStat valueOf(Stat stat)
 	{
-		for (BaseStat baseStat : values())
+		for (BaseStat baseStat : VALUES)
 		{
 			if (baseStat.getStat() == stat)
 			{

L2J_Mobius_5.0_Salvation/java/org/l2jmobius/gameserver/model/stats/IStatFunction.java

@@ -92,10 +92,7 @@ public interface IStatFunction
 			final Inventory inv = creature.getInventory();
 			if (inv != null)
 			{
-				for (ItemInstance item : inv.getPaperdollItems())
-				{
-					baseValue += item.getItem().getStats(stat, 0);
-				}
+				baseValue += inv.getPaperdollCache().getStats(stat);
 			}
 		}
 		

L2J_Mobius_5.0_Salvation/java/org/l2jmobius/gameserver/model/stats/finalizers/BaseStatFinalizer.java

@@ -16,15 +16,10 @@
  */
 package org.l2jmobius.gameserver.model.stats.finalizers;
 
-import java.util.HashSet;
 import java.util.OptionalDouble;
-import java.util.Set;
 
-import org.l2jmobius.gameserver.data.xml.impl.ArmorSetData;
-import org.l2jmobius.gameserver.model.ArmorSet;
 import org.l2jmobius.gameserver.model.actor.Creature;
 import org.l2jmobius.gameserver.model.actor.instance.PlayerInstance;
-import org.l2jmobius.gameserver.model.items.instance.ItemInstance;
 import org.l2jmobius.gameserver.model.stats.BaseStat;
 import org.l2jmobius.gameserver.model.stats.IStatFunction;
 import org.l2jmobius.gameserver.model.stats.Stat;
@@ -46,19 +41,9 @@ public class BaseStatFinalizer implements IStatFunction
 		if (creature.isPlayer())
 		{
 			final PlayerInstance player = creature.getActingPlayer();
-			final Set<ArmorSet> appliedSets = new HashSet<>(2);
 			
 			// Armor sets calculation
-			for (ItemInstance item : player.getInventory().getPaperdollItems())
-			{
-				for (ArmorSet set : ArmorSetData.getInstance().getSets(item.getId()))
-				{
-					if ((set.getPiecesCountById(player) >= set.getMinimumPieces()) && appliedSets.add(set))
-					{
-						baseValue += set.getStatsBonus(BaseStat.valueOf(stat));
-					}
-				}
-			}
+			baseValue += player.getInventory().getPaperdollCache().getBaseStatValue(player, BaseStat.valueOf(stat));
 			
 			// Henna calculation
 			baseValue += player.getHennaValue(BaseStat.valueOf(stat));

L2J_Mobius_5.0_Salvation/java/org/l2jmobius/gameserver/network/clientpackets/RequestEnchantItem.java

@@ -255,6 +255,7 @@ public class RequestEnchantItem implements IClientIncomingPacket
 								}
 							});
 						}
+						player.getInventory().getPaperdollCache().clearMaxSetEnchant();
 						player.broadcastUserInfo(); // update user info
 					}
 					break;

L2J_Mobius_5.5_EtinasFate/java/org/l2jmobius/gameserver/cache/PaperdollCache.java

@@ -0,0 +1,127 @@
+/*
+ * This file is part of the L2J Mobius project.
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package org.l2jmobius.gameserver.cache;
+
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+import java.util.concurrent.ConcurrentHashMap;
+
+import org.l2jmobius.gameserver.data.xml.impl.ArmorSetData;
+import org.l2jmobius.gameserver.model.ArmorSet;
+import org.l2jmobius.gameserver.model.actor.instance.PlayerInstance;
+import org.l2jmobius.gameserver.model.items.instance.ItemInstance;
+import org.l2jmobius.gameserver.model.stats.BaseStat;
+import org.l2jmobius.gameserver.model.stats.Stat;
+
+/**
+ * @author Sahar
+ */
+public final class PaperdollCache
+{
+	private final Set<ItemInstance> _paperdollItems = ConcurrentHashMap.newKeySet();
+	
+	private final Map<BaseStat, Double> _baseStatValues = new ConcurrentHashMap<>();
+	private final Map<Stat, Double> _statValues = new ConcurrentHashMap<>();
+	private int _maxSetEnchant = -1;
+	
+	public Set<ItemInstance> getPaperdollItems()
+	{
+		return _paperdollItems;
+	}
+	
+	public void clearCachedStats()
+	{
+		_baseStatValues.clear();
+		_statValues.clear();
+		
+		clearMaxSetEnchant();
+	}
+	
+	public void clearMaxSetEnchant()
+	{
+		_maxSetEnchant = -1;
+	}
+	
+	public double getBaseStatValue(PlayerInstance player, final BaseStat stat)
+	{
+		final Double baseStatValue = _baseStatValues.get(stat);
+		if (baseStatValue != null)
+		{
+			return baseStatValue;
+		}
+		
+		final Set<ArmorSet> appliedSets = new HashSet<>(2);
+		double value = 0;
+		for (ItemInstance item : _paperdollItems)
+		{
+			for (ArmorSet set : ArmorSetData.getInstance().getSets(item.getId()))
+			{
+				if ((set.getPiecesCountById(player) >= set.getMinimumPieces()) && appliedSets.add(set))
+				{
+					value += set.getStatsBonus(stat);
+				}
+			}
+		}
+		
+		_baseStatValues.put(stat, value);
+		return value;
+	}
+	
+	public int getMaxSetEnchant(PlayerInstance player)
+	{
+		int maxSetEnchant = _maxSetEnchant;
+		if (maxSetEnchant >= 0)
+		{
+			return maxSetEnchant;
+		}
+		
+		maxSetEnchant = 0;
+		for (ItemInstance item : _paperdollItems)
+		{
+			for (ArmorSet set : ArmorSetData.getInstance().getSets(item.getId()))
+			{
+				final int enchantEffect = set.getLowestSetEnchant(player);
+				if (enchantEffect > maxSetEnchant)
+				{
+					maxSetEnchant = enchantEffect;
+				}
+			}
+		}
+		
+		_maxSetEnchant = maxSetEnchant;
+		return maxSetEnchant;
+	}
+	
+	public double getStats(Stat stat)
+	{
+		final Double statValue = _statValues.get(stat);
+		if (statValue != null)
+		{
+			return statValue;
+		}
+		
+		double value = 0;
+		for (ItemInstance item : _paperdollItems)
+		{
+			value += item.getItem().getStats(stat, 0);
+		}
+		
+		_statValues.put(stat, value);
+		return value;
+	}
+}

L2J_Mobius_5.5_EtinasFate/java/org/l2jmobius/gameserver/model/itemcontainer/Inventory.java

@@ -33,6 +33,7 @@ import java.util.logging.Logger;
 import org.l2jmobius.Config;
 import org.l2jmobius.commons.database.DatabaseFactory;
 import org.l2jmobius.commons.util.CommonUtil;
+import org.l2jmobius.gameserver.cache.PaperdollCache;
 import org.l2jmobius.gameserver.data.xml.impl.AppearanceItemData;
 import org.l2jmobius.gameserver.data.xml.impl.ArmorSetData;
 import org.l2jmobius.gameserver.datatables.ItemTable;
@@ -151,6 +152,7 @@ public abstract class Inventory extends ItemContainer
 	
 	private final ItemInstance[] _paperdoll;
 	private final List<PaperdollListener> _paperdollListeners;
+	private final PaperdollCache _paperdollCache = new PaperdollCache();
 	
 	// protected to be accessed from child classes only
 	protected int _totalWeight;
@@ -1314,6 +1316,8 @@ public abstract class Inventory extends ItemContainer
 			if (old != null)
 			{
 				_paperdoll[slot] = null;
+				_paperdollCache.getPaperdollItems().remove(old);
+				
 				// Put old item from paperdoll slot to base location
 				old.setItemLocation(getBaseLocation());
 				old.setLastChange(ItemInstance.MODIFIED);
@@ -1344,6 +1348,8 @@ public abstract class Inventory extends ItemContainer
 			if (item != null)
 			{
 				_paperdoll[slot] = item;
+				_paperdollCache.getPaperdollItems().add(item);
+				
 				item.setItemLocation(getEquipLocation(), slot);
 				item.setLastChange(ItemInstance.MODIFIED);
 				_wearedMask |= item.getItem().getItemMask();
@@ -1359,6 +1365,7 @@ public abstract class Inventory extends ItemContainer
 				item.updateDatabase();
 			}
 			
+			_paperdollCache.clearCachedStats();
 			getOwner().getStat().recalculateStats(!getOwner().isPlayer());
 			
 			if (getOwner().isPlayer())
@@ -2436,19 +2443,7 @@ public abstract class Inventory extends ItemContainer
 		}
 		
 		final PlayerInstance player = getOwner().getActingPlayer();
-		int maxSetEnchant = 0;
-		for (ItemInstance item : getPaperdollItems())
-		{
-			for (ArmorSet set : ArmorSetData.getInstance().getSets(item.getId()))
-			{
-				final int enchantEffect = set.getLowestSetEnchant(player);
-				if (enchantEffect > maxSetEnchant)
-				{
-					maxSetEnchant = enchantEffect;
-				}
-			}
-		}
-		return maxSetEnchant;
+		return _paperdollCache.getMaxSetEnchant(player);
 	}
 	
 	public int getWeaponEnchant()
@@ -2512,6 +2507,11 @@ public abstract class Inventory extends ItemContainer
 	@SafeVarargs
 	public final Collection<ItemInstance> getPaperdollItems(Predicate<ItemInstance>... filters)
 	{
+		if (filters.length == 0)
+		{
+			return _paperdollCache.getPaperdollItems();
+		}
+		
 		Predicate<ItemInstance> filter = Objects::nonNull;
 		for (Predicate<ItemInstance> additionalFilter : filters)
 		{
@@ -2532,6 +2532,11 @@ public abstract class Inventory extends ItemContainer
 	@SafeVarargs
 	public final int getPaperdollItemCount(Predicate<ItemInstance>... filters)
 	{
+		if (filters.length == 0)
+		{
+			return _paperdollCache.getPaperdollItems().size();
+		}
+		
 		Predicate<ItemInstance> filter = Objects::nonNull;
 		for (Predicate<ItemInstance> additionalFilter : filters)
 		{
@@ -2548,4 +2553,9 @@ public abstract class Inventory extends ItemContainer
 		}
 		return count;
 	}
+	
+	public PaperdollCache getPaperdollCache()
+	{
+		return _paperdollCache;
+	}
 }

L2J_Mobius_5.5_EtinasFate/java/org/l2jmobius/gameserver/model/stats/BaseStat.java

@@ -40,6 +40,8 @@ public enum BaseStat
 	CHA(Stat.STAT_CHA),
 	LUC(Stat.STAT_LUC);
 	
+	private static final BaseStat[] VALUES = BaseStat.values();
+	
 	public static final int MAX_STAT_VALUE = 201;
 	
 	private final double[] _bonus = new double[MAX_STAT_VALUE];
@@ -92,7 +94,7 @@ public enum BaseStat
 	
 	public static BaseStat valueOf(Stat stat)
 	{
-		for (BaseStat baseStat : values())
+		for (BaseStat baseStat : VALUES)
 		{
 			if (baseStat.getStat() == stat)
 			{

L2J_Mobius_5.5_EtinasFate/java/org/l2jmobius/gameserver/model/stats/IStatFunction.java

@@ -92,10 +92,7 @@ public interface IStatFunction
 			final Inventory inv = creature.getInventory();
 			if (inv != null)
 			{
-				for (ItemInstance item : inv.getPaperdollItems())
-				{
-					baseValue += item.getItem().getStats(stat, 0);
-				}
+				baseValue += inv.getPaperdollCache().getStats(stat);
 			}
 		}
 		

L2J_Mobius_5.5_EtinasFate/java/org/l2jmobius/gameserver/model/stats/finalizers/BaseStatFinalizer.java

@@ -16,15 +16,10 @@
  */
 package org.l2jmobius.gameserver.model.stats.finalizers;
 
-import java.util.HashSet;
 import java.util.OptionalDouble;
-import java.util.Set;
 
-import org.l2jmobius.gameserver.data.xml.impl.ArmorSetData;
-import org.l2jmobius.gameserver.model.ArmorSet;
 import org.l2jmobius.gameserver.model.actor.Creature;
 import org.l2jmobius.gameserver.model.actor.instance.PlayerInstance;
-import org.l2jmobius.gameserver.model.items.instance.ItemInstance;
 import org.l2jmobius.gameserver.model.stats.BaseStat;
 import org.l2jmobius.gameserver.model.stats.IStatFunction;
 import org.l2jmobius.gameserver.model.stats.Stat;
@@ -46,19 +41,9 @@ public class BaseStatFinalizer implements IStatFunction
 		if (creature.isPlayer())
 		{
 			final PlayerInstance player = creature.getActingPlayer();
-			final Set<ArmorSet> appliedSets = new HashSet<>(2);
 			
 			// Armor sets calculation
-			for (ItemInstance item : player.getInventory().getPaperdollItems())
-			{
-				for (ArmorSet set : ArmorSetData.getInstance().getSets(item.getId()))
-				{
-					if ((set.getPiecesCountById(player) >= set.getMinimumPieces()) && appliedSets.add(set))
-					{
-						baseValue += set.getStatsBonus(BaseStat.valueOf(stat));
-					}
-				}
-			}
+			baseValue += player.getInventory().getPaperdollCache().getBaseStatValue(player, BaseStat.valueOf(stat));
 			
 			// Henna calculation
 			baseValue += player.getHennaValue(BaseStat.valueOf(stat));

L2J_Mobius_5.5_EtinasFate/java/org/l2jmobius/gameserver/network/clientpackets/RequestEnchantItem.java

@@ -255,6 +255,7 @@ public class RequestEnchantItem implements IClientIncomingPacket
 								}
 							});
 						}
+						player.getInventory().getPaperdollCache().clearMaxSetEnchant();
 						player.broadcastUserInfo(); // update user info
 					}
 					break;

L2J_Mobius_6.0_Fafurion/java/org/l2jmobius/gameserver/cache/PaperdollCache.java

@@ -0,0 +1,127 @@
+/*
+ * This file is part of the L2J Mobius project.
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package org.l2jmobius.gameserver.cache;
+
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+import java.util.concurrent.ConcurrentHashMap;
+
+import org.l2jmobius.gameserver.data.xml.impl.ArmorSetData;
+import org.l2jmobius.gameserver.model.ArmorSet;
+import org.l2jmobius.gameserver.model.actor.instance.PlayerInstance;
+import org.l2jmobius.gameserver.model.items.instance.ItemInstance;
+import org.l2jmobius.gameserver.model.stats.BaseStat;
+import org.l2jmobius.gameserver.model.stats.Stat;
+
+/**
+ * @author Sahar
+ */
+public final class PaperdollCache
+{
+	private final Set<ItemInstance> _paperdollItems = ConcurrentHashMap.newKeySet();
+	
+	private final Map<BaseStat, Double> _baseStatValues = new ConcurrentHashMap<>();
+	private final Map<Stat, Double> _statValues = new ConcurrentHashMap<>();
+	private int _maxSetEnchant = -1;
+	
+	public Set<ItemInstance> getPaperdollItems()
+	{
+		return _paperdollItems;
+	}
+	
+	public void clearCachedStats()
+	{
+		_baseStatValues.clear();
+		_statValues.clear();
+		
+		clearMaxSetEnchant();
+	}
+	
+	public void clearMaxSetEnchant()
+	{
+		_maxSetEnchant = -1;
+	}
+	
+	public double getBaseStatValue(PlayerInstance player, final BaseStat stat)
+	{
+		final Double baseStatValue = _baseStatValues.get(stat);
+		if (baseStatValue != null)
+		{
+			return baseStatValue;
+		}
+		
+		final Set<ArmorSet> appliedSets = new HashSet<>(2);
+		double value = 0;
+		for (ItemInstance item : _paperdollItems)
+		{
+			for (ArmorSet set : ArmorSetData.getInstance().getSets(item.getId()))
+			{
+				if ((set.getPiecesCountById(player) >= set.getMinimumPieces()) && appliedSets.add(set))
+				{
+					value += set.getStatsBonus(stat);
+				}
+			}
+		}
+		
+		_baseStatValues.put(stat, value);
+		return value;
+	}
+	
+	public int getMaxSetEnchant(PlayerInstance player)
+	{
+		int maxSetEnchant = _maxSetEnchant;
+		if (maxSetEnchant >= 0)
+		{
+			return maxSetEnchant;
+		}
+		
+		maxSetEnchant = 0;
+		for (ItemInstance item : _paperdollItems)
+		{
+			for (ArmorSet set : ArmorSetData.getInstance().getSets(item.getId()))
+			{
+				final int enchantEffect = set.getLowestSetEnchant(player);
+				if (enchantEffect > maxSetEnchant)
+				{
+					maxSetEnchant = enchantEffect;
+				}
+			}
+		}
+		
+		_maxSetEnchant = maxSetEnchant;
+		return maxSetEnchant;
+	}
+	
+	public double getStats(Stat stat)
+	{
+		final Double statValue = _statValues.get(stat);
+		if (statValue != null)
+		{
+			return statValue;
+		}
+		
+		double value = 0;
+		for (ItemInstance item : _paperdollItems)
+		{
+			value += item.getItem().getStats(stat, 0);
+		}
+		
+		_statValues.put(stat, value);
+		return value;
+	}
+}

L2J_Mobius_6.0_Fafurion/java/org/l2jmobius/gameserver/model/itemcontainer/Inventory.java

@@ -33,6 +33,7 @@ import java.util.logging.Logger;
 import org.l2jmobius.Config;
 import org.l2jmobius.commons.database.DatabaseFactory;
 import org.l2jmobius.commons.util.CommonUtil;
+import org.l2jmobius.gameserver.cache.PaperdollCache;
 import org.l2jmobius.gameserver.data.xml.impl.AppearanceItemData;
 import org.l2jmobius.gameserver.data.xml.impl.ArmorSetData;
 import org.l2jmobius.gameserver.datatables.ItemTable;
@@ -151,6 +152,7 @@ public abstract class Inventory extends ItemContainer
 	
 	private final ItemInstance[] _paperdoll;
 	private final List<PaperdollListener> _paperdollListeners;
+	private final PaperdollCache _paperdollCache = new PaperdollCache();
 	
 	// protected to be accessed from child classes only
 	protected int _totalWeight;
@@ -1314,6 +1316,8 @@ public abstract class Inventory extends ItemContainer
 			if (old != null)
 			{
 				_paperdoll[slot] = null;
+				_paperdollCache.getPaperdollItems().remove(old);
+				
 				// Put old item from paperdoll slot to base location
 				old.setItemLocation(getBaseLocation());
 				old.setLastChange(ItemInstance.MODIFIED);
@@ -1344,6 +1348,8 @@ public abstract class Inventory extends ItemContainer
 			if (item != null)
 			{
 				_paperdoll[slot] = item;
+				_paperdollCache.getPaperdollItems().add(item);
+				
 				item.setItemLocation(getEquipLocation(), slot);
 				item.setLastChange(ItemInstance.MODIFIED);
 				_wearedMask |= item.getItem().getItemMask();
@@ -1359,6 +1365,7 @@ public abstract class Inventory extends ItemContainer
 				item.updateDatabase();
 			}
 			
+			_paperdollCache.clearCachedStats();
 			getOwner().getStat().recalculateStats(!getOwner().isPlayer());
 			
 			if (getOwner().isPlayer())
@@ -2436,19 +2443,7 @@ public abstract class Inventory extends ItemContainer
 		}
 		
 		final PlayerInstance player = getOwner().getActingPlayer();
-		int maxSetEnchant = 0;
-		for (ItemInstance item : getPaperdollItems())
-		{
-			for (ArmorSet set : ArmorSetData.getInstance().getSets(item.getId()))
-			{
-				final int enchantEffect = set.getLowestSetEnchant(player);
-				if (enchantEffect > maxSetEnchant)
-				{
-					maxSetEnchant = enchantEffect;
-				}
-			}
-		}
-		return maxSetEnchant;
+		return _paperdollCache.getMaxSetEnchant(player);
 	}
 	
 	public int getWeaponEnchant()
@@ -2512,6 +2507,11 @@ public abstract class Inventory extends ItemContainer
 	@SafeVarargs
 	public final Collection<ItemInstance> getPaperdollItems(Predicate<ItemInstance>... filters)
 	{
+		if (filters.length == 0)
+		{
+			return _paperdollCache.getPaperdollItems();
+		}
+		
 		Predicate<ItemInstance> filter = Objects::nonNull;
 		for (Predicate<ItemInstance> additionalFilter : filters)
 		{
@@ -2532,6 +2532,11 @@ public abstract class Inventory extends ItemContainer
 	@SafeVarargs
 	public final int getPaperdollItemCount(Predicate<ItemInstance>... filters)
 	{
+		if (filters.length == 0)
+		{
+			return _paperdollCache.getPaperdollItems().size();
+		}
+		
 		Predicate<ItemInstance> filter = Objects::nonNull;
 		for (Predicate<ItemInstance> additionalFilter : filters)
 		{
@@ -2548,4 +2553,9 @@ public abstract class Inventory extends ItemContainer
 		}
 		return count;
 	}
+	
+	public PaperdollCache getPaperdollCache()
+	{
+		return _paperdollCache;
+	}
 }

L2J_Mobius_6.0_Fafurion/java/org/l2jmobius/gameserver/model/stats/BaseStat.java

@@ -40,6 +40,8 @@ public enum BaseStat
 	CHA(Stat.STAT_CHA),
 	LUC(Stat.STAT_LUC);
 	
+	private static final BaseStat[] VALUES = BaseStat.values();
+	
 	public static final int MAX_STAT_VALUE = 201;
 	
 	private final double[] _bonus = new double[MAX_STAT_VALUE];
@@ -92,7 +94,7 @@ public enum BaseStat
 	
 	public static BaseStat valueOf(Stat stat)
 	{
-		for (BaseStat baseStat : values())
+		for (BaseStat baseStat : VALUES)
 		{
 			if (baseStat.getStat() == stat)
 			{

L2J_Mobius_6.0_Fafurion/java/org/l2jmobius/gameserver/model/stats/IStatFunction.java

@@ -92,10 +92,7 @@ public interface IStatFunction
 			final Inventory inv = creature.getInventory();
 			if (inv != null)
 			{
-				for (ItemInstance item : inv.getPaperdollItems())
-				{
-					baseValue += item.getItem().getStats(stat, 0);
-				}
+				baseValue += inv.getPaperdollCache().getStats(stat);
 			}
 		}
 		

L2J_Mobius_6.0_Fafurion/java/org/l2jmobius/gameserver/model/stats/finalizers/BaseStatFinalizer.java

@@ -16,15 +16,10 @@
  */
 package org.l2jmobius.gameserver.model.stats.finalizers;
 
-import java.util.HashSet;
 import java.util.OptionalDouble;
-import java.util.Set;
 
-import org.l2jmobius.gameserver.data.xml.impl.ArmorSetData;
-import org.l2jmobius.gameserver.model.ArmorSet;
 import org.l2jmobius.gameserver.model.actor.Creature;
 import org.l2jmobius.gameserver.model.actor.instance.PlayerInstance;
-import org.l2jmobius.gameserver.model.items.instance.ItemInstance;
 import org.l2jmobius.gameserver.model.stats.BaseStat;
 import org.l2jmobius.gameserver.model.stats.IStatFunction;
 import org.l2jmobius.gameserver.model.stats.Stat;
@@ -46,19 +41,9 @@ public class BaseStatFinalizer implements IStatFunction
 		if (creature.isPlayer())
 		{
 			final PlayerInstance player = creature.getActingPlayer();
-			final Set<ArmorSet> appliedSets = new HashSet<>(2);
 			
 			// Armor sets calculation
-			for (ItemInstance item : player.getInventory().getPaperdollItems())
-			{
-				for (ArmorSet set : ArmorSetData.getInstance().getSets(item.getId()))
-				{
-					if ((set.getPiecesCountById(player) >= set.getMinimumPieces()) && appliedSets.add(set))
-					{
-						baseValue += set.getStatsBonus(BaseStat.valueOf(stat));
-					}
-				}
-			}
+			baseValue += player.getInventory().getPaperdollCache().getBaseStatValue(player, BaseStat.valueOf(stat));
 			
 			// Henna calculation
 			baseValue += player.getHennaValue(BaseStat.valueOf(stat));

L2J_Mobius_6.0_Fafurion/java/org/l2jmobius/gameserver/network/clientpackets/RequestEnchantItem.java

@@ -257,6 +257,7 @@ public class RequestEnchantItem implements IClientIncomingPacket
 								}
 							});
 						}
+						player.getInventory().getPaperdollCache().clearMaxSetEnchant();
 						player.broadcastUserInfo(); // update user info
 					}
 					break;

L2J_Mobius_7.0_PreludeOfWar/java/org/l2jmobius/gameserver/cache/PaperdollCache.java

@@ -0,0 +1,127 @@
+/*
+ * This file is part of the L2J Mobius project.
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package org.l2jmobius.gameserver.cache;
+
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+import java.util.concurrent.ConcurrentHashMap;
+
+import org.l2jmobius.gameserver.data.xml.impl.ArmorSetData;
+import org.l2jmobius.gameserver.model.ArmorSet;
+import org.l2jmobius.gameserver.model.actor.instance.PlayerInstance;
+import org.l2jmobius.gameserver.model.items.instance.ItemInstance;
+import org.l2jmobius.gameserver.model.stats.BaseStat;
+import org.l2jmobius.gameserver.model.stats.Stat;
+
+/**
+ * @author Sahar
+ */
+public final class PaperdollCache
+{
+	private final Set<ItemInstance> _paperdollItems = ConcurrentHashMap.newKeySet();
+	
+	private final Map<BaseStat, Double> _baseStatValues = new ConcurrentHashMap<>();
+	private final Map<Stat, Double> _statValues = new ConcurrentHashMap<>();
+	private int _maxSetEnchant = -1;
+	
+	public Set<ItemInstance> getPaperdollItems()
+	{
+		return _paperdollItems;
+	}
+	
+	public void clearCachedStats()
+	{
+		_baseStatValues.clear();
+		_statValues.clear();
+		
+		clearMaxSetEnchant();
+	}
+	
+	public void clearMaxSetEnchant()
+	{
+		_maxSetEnchant = -1;
+	}
+	
+	public double getBaseStatValue(PlayerInstance player, final BaseStat stat)
+	{
+		final Double baseStatValue = _baseStatValues.get(stat);
+		if (baseStatValue != null)
+		{
+			return baseStatValue;
+		}
+		
+		final Set<ArmorSet> appliedSets = new HashSet<>(2);
+		double value = 0;
+		for (ItemInstance item : _paperdollItems)
+		{
+			for (ArmorSet set : ArmorSetData.getInstance().getSets(item.getId()))
+			{
+				if ((set.getPiecesCountById(player) >= set.getMinimumPieces()) && appliedSets.add(set))
+				{
+					value += set.getStatsBonus(stat);
+				}
+			}
+		}
+		
+		_baseStatValues.put(stat, value);
+		return value;
+	}
+	
+	public int getMaxSetEnchant(PlayerInstance player)
+	{
+		int maxSetEnchant = _maxSetEnchant;
+		if (maxSetEnchant >= 0)
+		{
+			return maxSetEnchant;
+		}
+		
+		maxSetEnchant = 0;
+		for (ItemInstance item : _paperdollItems)
+		{
+			for (ArmorSet set : ArmorSetData.getInstance().getSets(item.getId()))
+			{
+				final int enchantEffect = set.getLowestSetEnchant(player);
+				if (enchantEffect > maxSetEnchant)
+				{
+					maxSetEnchant = enchantEffect;
+				}
+			}
+		}
+		
+		_maxSetEnchant = maxSetEnchant;
+		return maxSetEnchant;
+	}
+	
+	public double getStats(Stat stat)
+	{
+		final Double statValue = _statValues.get(stat);
+		if (statValue != null)
+		{
+			return statValue;
+		}
+		
+		double value = 0;
+		for (ItemInstance item : _paperdollItems)
+		{
+			value += item.getItem().getStats(stat, 0);
+		}
+		
+		_statValues.put(stat, value);
+		return value;
+	}
+}

L2J_Mobius_7.0_PreludeOfWar/java/org/l2jmobius/gameserver/model/itemcontainer/Inventory.java

@@ -33,6 +33,7 @@ import java.util.logging.Logger;
 import org.l2jmobius.Config;
 import org.l2jmobius.commons.database.DatabaseFactory;
 import org.l2jmobius.commons.util.CommonUtil;
+import org.l2jmobius.gameserver.cache.PaperdollCache;
 import org.l2jmobius.gameserver.data.xml.impl.AppearanceItemData;
 import org.l2jmobius.gameserver.data.xml.impl.ArmorSetData;
 import org.l2jmobius.gameserver.datatables.ItemTable;
@@ -151,6 +152,7 @@ public abstract class Inventory extends ItemContainer
 	
 	private final ItemInstance[] _paperdoll;
 	private final List<PaperdollListener> _paperdollListeners;
+	private final PaperdollCache _paperdollCache = new PaperdollCache();
 	
 	// protected to be accessed from child classes only
 	protected int _totalWeight;
@@ -1307,6 +1309,8 @@ public abstract class Inventory extends ItemContainer
 			if (old != null)
 			{
 				_paperdoll[slot] = null;
+				_paperdollCache.getPaperdollItems().remove(old);
+				
 				// Put old item from paperdoll slot to base location
 				old.setItemLocation(getBaseLocation());
 				old.setLastChange(ItemInstance.MODIFIED);
@@ -1337,6 +1341,8 @@ public abstract class Inventory extends ItemContainer
 			if (item != null)
 			{
 				_paperdoll[slot] = item;
+				_paperdollCache.getPaperdollItems().add(item);
+				
 				item.setItemLocation(getEquipLocation(), slot);
 				item.setLastChange(ItemInstance.MODIFIED);
 				_wearedMask |= item.getItem().getItemMask();
@@ -1352,6 +1358,7 @@ public abstract class Inventory extends ItemContainer
 				item.updateDatabase();
 			}
 			
+			_paperdollCache.clearCachedStats();
 			getOwner().getStat().recalculateStats(!getOwner().isPlayer());
 			
 			if (getOwner().isPlayer())
@@ -2420,19 +2427,7 @@ public abstract class Inventory extends ItemContainer
 		}
 		
 		final PlayerInstance player = getOwner().getActingPlayer();
-		int maxSetEnchant = 0;
-		for (ItemInstance item : getPaperdollItems())
-		{
-			for (ArmorSet set : ArmorSetData.getInstance().getSets(item.getId()))
-			{
-				final int enchantEffect = set.getLowestSetEnchant(player);
-				if (enchantEffect > maxSetEnchant)
-				{
-					maxSetEnchant = enchantEffect;
-				}
-			}
-		}
-		return maxSetEnchant;
+		return _paperdollCache.getMaxSetEnchant(player);
 	}
 	
 	public int getWeaponEnchant()
@@ -2496,6 +2491,11 @@ public abstract class Inventory extends ItemContainer
 	@SafeVarargs
 	public final Collection<ItemInstance> getPaperdollItems(Predicate<ItemInstance>... filters)
 	{
+		if (filters.length == 0)
+		{
+			return _paperdollCache.getPaperdollItems();
+		}
+		
 		Predicate<ItemInstance> filter = Objects::nonNull;
 		for (Predicate<ItemInstance> additionalFilter : filters)
 		{
@@ -2516,6 +2516,11 @@ public abstract class Inventory extends ItemContainer
 	@SafeVarargs
 	public final int getPaperdollItemCount(Predicate<ItemInstance>... filters)
 	{
+		if (filters.length == 0)
+		{
+			return _paperdollCache.getPaperdollItems().size();
+		}
+		
 		Predicate<ItemInstance> filter = Objects::nonNull;
 		for (Predicate<ItemInstance> additionalFilter : filters)
 		{
@@ -2532,4 +2537,9 @@ public abstract class Inventory extends ItemContainer
 		}
 		return count;
 	}
+	
+	public PaperdollCache getPaperdollCache()
+	{
+		return _paperdollCache;
+	}
 }

L2J_Mobius_7.0_PreludeOfWar/java/org/l2jmobius/gameserver/model/stats/BaseStat.java

@@ -40,6 +40,8 @@ public enum BaseStat
 	CHA(Stat.STAT_CHA),
 	LUC(Stat.STAT_LUC);
 	
+	private static final BaseStat[] VALUES = BaseStat.values();
+	
 	public static final int MAX_STAT_VALUE = 201;
 	
 	private final double[] _bonus = new double[MAX_STAT_VALUE];
@@ -92,7 +94,7 @@ public enum BaseStat
 	
 	public static BaseStat valueOf(Stat stat)
 	{
-		for (BaseStat baseStat : values())
+		for (BaseStat baseStat : VALUES)
 		{
 			if (baseStat.getStat() == stat)
 			{

L2J_Mobius_7.0_PreludeOfWar/java/org/l2jmobius/gameserver/model/stats/IStatFunction.java

@@ -92,10 +92,7 @@ public interface IStatFunction
 			final Inventory inv = creature.getInventory();
 			if (inv != null)
 			{
-				for (ItemInstance item : inv.getPaperdollItems())
-				{
-					baseValue += item.getItem().getStats(stat, 0);
-				}
+				baseValue += inv.getPaperdollCache().getStats(stat);
 			}
 		}
 		

L2J_Mobius_7.0_PreludeOfWar/java/org/l2jmobius/gameserver/model/stats/finalizers/BaseStatFinalizer.java

@@ -16,15 +16,10 @@
  */
 package org.l2jmobius.gameserver.model.stats.finalizers;
 
-import java.util.HashSet;
 import java.util.OptionalDouble;
-import java.util.Set;
 
-import org.l2jmobius.gameserver.data.xml.impl.ArmorSetData;
-import org.l2jmobius.gameserver.model.ArmorSet;
 import org.l2jmobius.gameserver.model.actor.Creature;
 import org.l2jmobius.gameserver.model.actor.instance.PlayerInstance;
-import org.l2jmobius.gameserver.model.items.instance.ItemInstance;
 import org.l2jmobius.gameserver.model.stats.BaseStat;
 import org.l2jmobius.gameserver.model.stats.IStatFunction;
 import org.l2jmobius.gameserver.model.stats.Stat;
@@ -46,19 +41,9 @@ public class BaseStatFinalizer implements IStatFunction
 		if (creature.isPlayer())
 		{
 			final PlayerInstance player = creature.getActingPlayer();
-			final Set<ArmorSet> appliedSets = new HashSet<>(2);
 			
 			// Armor sets calculation
-			for (ItemInstance item : player.getInventory().getPaperdollItems())
-			{
-				for (ArmorSet set : ArmorSetData.getInstance().getSets(item.getId()))
-				{
-					if ((set.getPiecesCountById(player) >= set.getMinimumPieces()) && appliedSets.add(set))
-					{
-						baseValue += set.getStatsBonus(BaseStat.valueOf(stat));
-					}
-				}
-			}
+			baseValue += player.getInventory().getPaperdollCache().getBaseStatValue(player, BaseStat.valueOf(stat));
 			
 			// Henna calculation
 			baseValue += player.getHennaValue(BaseStat.valueOf(stat));

L2J_Mobius_7.0_PreludeOfWar/java/org/l2jmobius/gameserver/network/clientpackets/RequestEnchantItem.java

@@ -257,6 +257,7 @@ public class RequestEnchantItem implements IClientIncomingPacket
 								}
 							});
 						}
+						player.getInventory().getPaperdollCache().clearMaxSetEnchant();
 						player.broadcastUserInfo(); // update user info
 					}
 					break;

L2J_Mobius_Classic_2.0_Saviors/java/org/l2jmobius/gameserver/cache/PaperdollCache.java

@@ -0,0 +1,127 @@
+/*
+ * This file is part of the L2J Mobius project.
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package org.l2jmobius.gameserver.cache;
+
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+import java.util.concurrent.ConcurrentHashMap;
+
+import org.l2jmobius.gameserver.data.xml.impl.ArmorSetData;
+import org.l2jmobius.gameserver.model.ArmorSet;
+import org.l2jmobius.gameserver.model.actor.instance.PlayerInstance;
+import org.l2jmobius.gameserver.model.items.instance.ItemInstance;
+import org.l2jmobius.gameserver.model.stats.BaseStat;
+import org.l2jmobius.gameserver.model.stats.Stat;
+
+/**
+ * @author Sahar
+ */
+public final class PaperdollCache
+{
+	private final Set<ItemInstance> _paperdollItems = ConcurrentHashMap.newKeySet();
+	
+	private final Map<BaseStat, Double> _baseStatValues = new ConcurrentHashMap<>();
+	private final Map<Stat, Double> _statValues = new ConcurrentHashMap<>();
+	private int _maxSetEnchant = -1;
+	
+	public Set<ItemInstance> getPaperdollItems()
+	{
+		return _paperdollItems;
+	}
+	
+	public void clearCachedStats()
+	{
+		_baseStatValues.clear();
+		_statValues.clear();
+		
+		clearMaxSetEnchant();
+	}
+	
+	public void clearMaxSetEnchant()
+	{
+		_maxSetEnchant = -1;
+	}
+	
+	public double getBaseStatValue(PlayerInstance player, final BaseStat stat)
+	{
+		final Double baseStatValue = _baseStatValues.get(stat);
+		if (baseStatValue != null)
+		{
+			return baseStatValue;
+		}
+		
+		final Set<ArmorSet> appliedSets = new HashSet<>(2);
+		double value = 0;
+		for (ItemInstance item : _paperdollItems)
+		{
+			for (ArmorSet set : ArmorSetData.getInstance().getSets(item.getId()))
+			{
+				if ((set.getPiecesCountById(player) >= set.getMinimumPieces()) && appliedSets.add(set))
+				{
+					value += set.getStatsBonus(stat);
+				}
+			}
+		}
+		
+		_baseStatValues.put(stat, value);
+		return value;
+	}
+	
+	public int getMaxSetEnchant(PlayerInstance player)
+	{
+		int maxSetEnchant = _maxSetEnchant;
+		if (maxSetEnchant >= 0)
+		{
+			return maxSetEnchant;
+		}
+		
+		maxSetEnchant = 0;
+		for (ItemInstance item : _paperdollItems)
+		{
+			for (ArmorSet set : ArmorSetData.getInstance().getSets(item.getId()))
+			{
+				final int enchantEffect = set.getLowestSetEnchant(player);
+				if (enchantEffect > maxSetEnchant)
+				{
+					maxSetEnchant = enchantEffect;
+				}
+			}
+		}
+		
+		_maxSetEnchant = maxSetEnchant;
+		return maxSetEnchant;
+	}
+	
+	public double getStats(Stat stat)
+	{
+		final Double statValue = _statValues.get(stat);
+		if (statValue != null)
+		{
+			return statValue;
+		}
+		
+		double value = 0;
+		for (ItemInstance item : _paperdollItems)
+		{
+			value += item.getItem().getStats(stat, 0);
+		}
+		
+		_statValues.put(stat, value);
+		return value;
+	}
+}

L2J_Mobius_Classic_2.0_Saviors/java/org/l2jmobius/gameserver/model/itemcontainer/Inventory.java

@@ -33,6 +33,7 @@ import java.util.logging.Logger;
 import org.l2jmobius.Config;
 import org.l2jmobius.commons.database.DatabaseFactory;
 import org.l2jmobius.commons.util.CommonUtil;
+import org.l2jmobius.gameserver.cache.PaperdollCache;
 import org.l2jmobius.gameserver.data.xml.impl.AppearanceItemData;
 import org.l2jmobius.gameserver.data.xml.impl.ArmorSetData;
 import org.l2jmobius.gameserver.datatables.ItemTable;
@@ -123,6 +124,7 @@ public abstract class Inventory extends ItemContainer
 	
 	private final ItemInstance[] _paperdoll;
 	private final List<PaperdollListener> _paperdollListeners;
+	private final PaperdollCache _paperdollCache = new PaperdollCache();
 	
 	// protected to be accessed from child classes only
 	protected int _totalWeight;
@@ -1209,6 +1211,8 @@ public abstract class Inventory extends ItemContainer
 			if (old != null)
 			{
 				_paperdoll[slot] = null;
+				_paperdollCache.getPaperdollItems().remove(old);
+				
 				// Put old item from paperdoll slot to base location
 				old.setItemLocation(getBaseLocation());
 				old.setLastChange(ItemInstance.MODIFIED);
@@ -1239,6 +1243,8 @@ public abstract class Inventory extends ItemContainer
 			if (item != null)
 			{
 				_paperdoll[slot] = item;
+				_paperdollCache.getPaperdollItems().add(item);
+				
 				item.setItemLocation(getEquipLocation(), slot);
 				item.setLastChange(ItemInstance.MODIFIED);
 				_wearedMask |= item.getItem().getItemMask();
@@ -1254,6 +1260,7 @@ public abstract class Inventory extends ItemContainer
 				item.updateDatabase();
 			}
 			
+			_paperdollCache.clearCachedStats();
 			getOwner().getStat().recalculateStats(!getOwner().isPlayer());
 			
 			if (getOwner().isPlayer())
@@ -2126,19 +2133,7 @@ public abstract class Inventory extends ItemContainer
 		}
 		
 		final PlayerInstance player = getOwner().getActingPlayer();
-		int maxSetEnchant = 0;
-		for (ItemInstance item : getPaperdollItems())
-		{
-			for (ArmorSet set : ArmorSetData.getInstance().getSets(item.getId()))
-			{
-				final int enchantEffect = set.getLowestSetEnchant(player);
-				if (enchantEffect > maxSetEnchant)
-				{
-					maxSetEnchant = enchantEffect;
-				}
-			}
-		}
-		return maxSetEnchant;
+		return _paperdollCache.getMaxSetEnchant(player);
 	}
 	
 	public int getWeaponEnchant()
@@ -2202,6 +2197,11 @@ public abstract class Inventory extends ItemContainer
 	@SafeVarargs
 	public final Collection<ItemInstance> getPaperdollItems(Predicate<ItemInstance>... filters)
 	{
+		if (filters.length == 0)
+		{
+			return _paperdollCache.getPaperdollItems();
+		}
+		
 		Predicate<ItemInstance> filter = Objects::nonNull;
 		for (Predicate<ItemInstance> additionalFilter : filters)
 		{
@@ -2222,6 +2222,11 @@ public abstract class Inventory extends ItemContainer
 	@SafeVarargs
 	public final int getPaperdollItemCount(Predicate<ItemInstance>... filters)
 	{
+		if (filters.length == 0)
+		{
+			return _paperdollCache.getPaperdollItems().size();
+		}
+		
 		Predicate<ItemInstance> filter = Objects::nonNull;
 		for (Predicate<ItemInstance> additionalFilter : filters)
 		{
@@ -2238,4 +2243,9 @@ public abstract class Inventory extends ItemContainer
 		}
 		return count;
 	}
+	
+	public PaperdollCache getPaperdollCache()
+	{
+		return _paperdollCache;
+	}
 }

L2J_Mobius_Classic_2.0_Saviors/java/org/l2jmobius/gameserver/model/stats/BaseStat.java

@@ -38,6 +38,8 @@ public enum BaseStat
 	CON(Stat.STAT_CON),
 	MEN(Stat.STAT_MEN);
 	
+	private static final BaseStat[] VALUES = BaseStat.values();
+	
 	public static final int MAX_STAT_VALUE = 201;
 	
 	private final double[] _bonus = new double[MAX_STAT_VALUE];
@@ -90,7 +92,7 @@ public enum BaseStat
 	
 	public static BaseStat valueOf(Stat stat)
 	{
-		for (BaseStat baseStat : values())
+		for (BaseStat baseStat : VALUES)
 		{
 			if (baseStat.getStat() == stat)
 			{

L2J_Mobius_Classic_2.0_Saviors/java/org/l2jmobius/gameserver/model/stats/IStatFunction.java

@@ -92,10 +92,7 @@ public interface IStatFunction
 			final Inventory inv = creature.getInventory();
 			if (inv != null)
 			{
-				for (ItemInstance item : inv.getPaperdollItems())
-				{
-					baseValue += item.getItem().getStats(stat, 0);
-				}
+				baseValue += inv.getPaperdollCache().getStats(stat);
 			}
 		}
 		

L2J_Mobius_Classic_2.0_Saviors/java/org/l2jmobius/gameserver/model/stats/finalizers/BaseStatFinalizer.java

@@ -16,15 +16,10 @@
  */
 package org.l2jmobius.gameserver.model.stats.finalizers;
 
-import java.util.HashSet;
 import java.util.OptionalDouble;
-import java.util.Set;
 
-import org.l2jmobius.gameserver.data.xml.impl.ArmorSetData;
-import org.l2jmobius.gameserver.model.ArmorSet;
 import org.l2jmobius.gameserver.model.actor.Creature;
 import org.l2jmobius.gameserver.model.actor.instance.PlayerInstance;
-import org.l2jmobius.gameserver.model.items.instance.ItemInstance;
 import org.l2jmobius.gameserver.model.stats.BaseStat;
 import org.l2jmobius.gameserver.model.stats.IStatFunction;
 import org.l2jmobius.gameserver.model.stats.Stat;
@@ -46,19 +41,9 @@ public class BaseStatFinalizer implements IStatFunction
 		if (creature.isPlayer())
 		{
 			final PlayerInstance player = creature.getActingPlayer();
-			final Set<ArmorSet> appliedSets = new HashSet<>(2);
 			
 			// Armor sets calculation
-			for (ItemInstance item : player.getInventory().getPaperdollItems())
-			{
-				for (ArmorSet set : ArmorSetData.getInstance().getSets(item.getId()))
-				{
-					if ((set.getPiecesCountById(player) >= set.getMinimumPieces()) && appliedSets.add(set))
-					{
-						baseValue += set.getStatsBonus(BaseStat.valueOf(stat));
-					}
-				}
-			}
+			baseValue += player.getInventory().getPaperdollCache().getBaseStatValue(player, BaseStat.valueOf(stat));
 			
 			// Henna calculation
 			baseValue += player.getHennaValue(BaseStat.valueOf(stat));

L2J_Mobius_Classic_2.0_Saviors/java/org/l2jmobius/gameserver/network/clientpackets/RequestEnchantItem.java

@@ -255,6 +255,7 @@ public class RequestEnchantItem implements IClientIncomingPacket
 								}
 							});
 						}
+						player.getInventory().getPaperdollCache().clearMaxSetEnchant();
 						player.broadcastUserInfo(); // update user info
 					}
 					break;

L2J_Mobius_Classic_2.1_Zaken/java/org/l2jmobius/gameserver/cache/PaperdollCache.java

@@ -0,0 +1,127 @@
+/*
+ * This file is part of the L2J Mobius project.
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package org.l2jmobius.gameserver.cache;
+
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+import java.util.concurrent.ConcurrentHashMap;
+
+import org.l2jmobius.gameserver.data.xml.impl.ArmorSetData;
+import org.l2jmobius.gameserver.model.ArmorSet;
+import org.l2jmobius.gameserver.model.actor.instance.PlayerInstance;
+import org.l2jmobius.gameserver.model.items.instance.ItemInstance;
+import org.l2jmobius.gameserver.model.stats.BaseStat;
+import org.l2jmobius.gameserver.model.stats.Stat;
+
+/**
+ * @author Sahar
+ */
+public final class PaperdollCache
+{
+	private final Set<ItemInstance> _paperdollItems = ConcurrentHashMap.newKeySet();
+	
+	private final Map<BaseStat, Double> _baseStatValues = new ConcurrentHashMap<>();
+	private final Map<Stat, Double> _statValues = new ConcurrentHashMap<>();
+	private int _maxSetEnchant = -1;
+	
+	public Set<ItemInstance> getPaperdollItems()
+	{
+		return _paperdollItems;
+	}
+	
+	public void clearCachedStats()
+	{
+		_baseStatValues.clear();
+		_statValues.clear();
+		
+		clearMaxSetEnchant();
+	}
+	
+	public void clearMaxSetEnchant()
+	{
+		_maxSetEnchant = -1;
+	}
+	
+	public double getBaseStatValue(PlayerInstance player, final BaseStat stat)
+	{
+		final Double baseStatValue = _baseStatValues.get(stat);
+		if (baseStatValue != null)
+		{
+			return baseStatValue;
+		}
+		
+		final Set<ArmorSet> appliedSets = new HashSet<>(2);
+		double value = 0;
+		for (ItemInstance item : _paperdollItems)
+		{
+			for (ArmorSet set : ArmorSetData.getInstance().getSets(item.getId()))
+			{
+				if ((set.getPiecesCountById(player) >= set.getMinimumPieces()) && appliedSets.add(set))
+				{
+					value += set.getStatsBonus(stat);
+				}
+			}
+		}
+		
+		_baseStatValues.put(stat, value);
+		return value;
+	}
+	
+	public int getMaxSetEnchant(PlayerInstance player)
+	{
+		int maxSetEnchant = _maxSetEnchant;
+		if (maxSetEnchant >= 0)
+		{
+			return maxSetEnchant;
+		}
+		
+		maxSetEnchant = 0;
+		for (ItemInstance item : _paperdollItems)
+		{
+			for (ArmorSet set : ArmorSetData.getInstance().getSets(item.getId()))
+			{
+				final int enchantEffect = set.getLowestSetEnchant(player);
+				if (enchantEffect > maxSetEnchant)
+				{
+					maxSetEnchant = enchantEffect;
+				}
+			}
+		}
+		
+		_maxSetEnchant = maxSetEnchant;
+		return maxSetEnchant;
+	}
+	
+	public double getStats(Stat stat)
+	{
+		final Double statValue = _statValues.get(stat);
+		if (statValue != null)
+		{
+			return statValue;
+		}
+		
+		double value = 0;
+		for (ItemInstance item : _paperdollItems)
+		{
+			value += item.getItem().getStats(stat, 0);
+		}
+		
+		_statValues.put(stat, value);
+		return value;
+	}
+}

L2J_Mobius_Classic_2.1_Zaken/java/org/l2jmobius/gameserver/model/itemcontainer/Inventory.java

@@ -33,6 +33,7 @@ import java.util.logging.Logger;
 import org.l2jmobius.Config;
 import org.l2jmobius.commons.database.DatabaseFactory;
 import org.l2jmobius.commons.util.CommonUtil;
+import org.l2jmobius.gameserver.cache.PaperdollCache;
 import org.l2jmobius.gameserver.data.xml.impl.AppearanceItemData;
 import org.l2jmobius.gameserver.data.xml.impl.ArmorSetData;
 import org.l2jmobius.gameserver.datatables.ItemTable;
@@ -123,6 +124,7 @@ public abstract class Inventory extends ItemContainer
 	
 	private final ItemInstance[] _paperdoll;
 	private final List<PaperdollListener> _paperdollListeners;
+	private final PaperdollCache _paperdollCache = new PaperdollCache();
 	
 	// protected to be accessed from child classes only
 	protected int _totalWeight;
@@ -1209,6 +1211,8 @@ public abstract class Inventory extends ItemContainer
 			if (old != null)
 			{
 				_paperdoll[slot] = null;
+				_paperdollCache.getPaperdollItems().remove(old);
+				
 				// Put old item from paperdoll slot to base location
 				old.setItemLocation(getBaseLocation());
 				old.setLastChange(ItemInstance.MODIFIED);
@@ -1239,6 +1243,8 @@ public abstract class Inventory extends ItemContainer
 			if (item != null)
 			{
 				_paperdoll[slot] = item;
+				_paperdollCache.getPaperdollItems().add(item);
+				
 				item.setItemLocation(getEquipLocation(), slot);
 				item.setLastChange(ItemInstance.MODIFIED);
 				_wearedMask |= item.getItem().getItemMask();
@@ -1254,6 +1260,7 @@ public abstract class Inventory extends ItemContainer
 				item.updateDatabase();
 			}
 			
+			_paperdollCache.clearCachedStats();
 			getOwner().getStat().recalculateStats(!getOwner().isPlayer());
 			
 			if (getOwner().isPlayer())
@@ -2126,19 +2133,7 @@ public abstract class Inventory extends ItemContainer
 		}
 		
 		final PlayerInstance player = getOwner().getActingPlayer();
-		int maxSetEnchant = 0;
-		for (ItemInstance item : getPaperdollItems())
-		{
-			for (ArmorSet set : ArmorSetData.getInstance().getSets(item.getId()))
-			{
-				final int enchantEffect = set.getLowestSetEnchant(player);
-				if (enchantEffect > maxSetEnchant)
-				{
-					maxSetEnchant = enchantEffect;
-				}
-			}
-		}
-		return maxSetEnchant;
+		return _paperdollCache.getMaxSetEnchant(player);
 	}
 	
 	public int getWeaponEnchant()
@@ -2202,6 +2197,11 @@ public abstract class Inventory extends ItemContainer
 	@SafeVarargs
 	public final Collection<ItemInstance> getPaperdollItems(Predicate<ItemInstance>... filters)
 	{
+		if (filters.length == 0)
+		{
+			return _paperdollCache.getPaperdollItems();
+		}
+		
 		Predicate<ItemInstance> filter = Objects::nonNull;
 		for (Predicate<ItemInstance> additionalFilter : filters)
 		{
@@ -2222,6 +2222,11 @@ public abstract class Inventory extends ItemContainer
 	@SafeVarargs
 	public final int getPaperdollItemCount(Predicate<ItemInstance>... filters)
 	{
+		if (filters.length == 0)
+		{
+			return _paperdollCache.getPaperdollItems().size();
+		}
+		
 		Predicate<ItemInstance> filter = Objects::nonNull;
 		for (Predicate<ItemInstance> additionalFilter : filters)
 		{
@@ -2238,4 +2243,9 @@ public abstract class Inventory extends ItemContainer
 		}
 		return count;
 	}
+	
+	public PaperdollCache getPaperdollCache()
+	{
+		return _paperdollCache;
+	}
 }

L2J_Mobius_Classic_2.1_Zaken/java/org/l2jmobius/gameserver/model/stats/BaseStat.java

@@ -38,6 +38,8 @@ public enum BaseStat
 	CON(Stat.STAT_CON),
 	MEN(Stat.STAT_MEN);
 	
+	private static final BaseStat[] VALUES = BaseStat.values();
+	
 	public static final int MAX_STAT_VALUE = 201;
 	
 	private final double[] _bonus = new double[MAX_STAT_VALUE];
@@ -90,7 +92,7 @@ public enum BaseStat
 	
 	public static BaseStat valueOf(Stat stat)
 	{
-		for (BaseStat baseStat : values())
+		for (BaseStat baseStat : VALUES)
 		{
 			if (baseStat.getStat() == stat)
 			{

L2J_Mobius_Classic_2.1_Zaken/java/org/l2jmobius/gameserver/model/stats/IStatFunction.java

@@ -92,10 +92,7 @@ public interface IStatFunction
 			final Inventory inv = creature.getInventory();
 			if (inv != null)
 			{
-				for (ItemInstance item : inv.getPaperdollItems())
-				{
-					baseValue += item.getItem().getStats(stat, 0);
-				}
+				baseValue += inv.getPaperdollCache().getStats(stat);
 			}
 		}
 		

L2J_Mobius_Classic_2.1_Zaken/java/org/l2jmobius/gameserver/model/stats/finalizers/BaseStatFinalizer.java

@@ -16,15 +16,10 @@
  */
 package org.l2jmobius.gameserver.model.stats.finalizers;
 
-import java.util.HashSet;
 import java.util.OptionalDouble;
-import java.util.Set;
 
-import org.l2jmobius.gameserver.data.xml.impl.ArmorSetData;
-import org.l2jmobius.gameserver.model.ArmorSet;
 import org.l2jmobius.gameserver.model.actor.Creature;
 import org.l2jmobius.gameserver.model.actor.instance.PlayerInstance;
-import org.l2jmobius.gameserver.model.items.instance.ItemInstance;
 import org.l2jmobius.gameserver.model.stats.BaseStat;
 import org.l2jmobius.gameserver.model.stats.IStatFunction;
 import org.l2jmobius.gameserver.model.stats.Stat;
@@ -46,19 +41,9 @@ public class BaseStatFinalizer implements IStatFunction
 		if (creature.isPlayer())
 		{
 			final PlayerInstance player = creature.getActingPlayer();
-			final Set<ArmorSet> appliedSets = new HashSet<>(2);
 			
 			// Armor sets calculation
-			for (ItemInstance item : player.getInventory().getPaperdollItems())
-			{
-				for (ArmorSet set : ArmorSetData.getInstance().getSets(item.getId()))
-				{
-					if ((set.getPiecesCountById(player) >= set.getMinimumPieces()) && appliedSets.add(set))
-					{
-						baseValue += set.getStatsBonus(BaseStat.valueOf(stat));
-					}
-				}
-			}
+			baseValue += player.getInventory().getPaperdollCache().getBaseStatValue(player, BaseStat.valueOf(stat));
 			
 			// Henna calculation
 			baseValue += player.getHennaValue(BaseStat.valueOf(stat));

L2J_Mobius_Classic_2.1_Zaken/java/org/l2jmobius/gameserver/network/clientpackets/RequestEnchantItem.java

@@ -255,6 +255,7 @@ public class RequestEnchantItem implements IClientIncomingPacket
 								}
 							});
 						}
+						player.getInventory().getPaperdollCache().clearMaxSetEnchant();
 						player.broadcastUserInfo(); // update user info
 					}
 					break;

L2J_Mobius_Classic_2.2_Antharas/java/org/l2jmobius/gameserver/cache/PaperdollCache.java

@@ -0,0 +1,127 @@
+/*
+ * This file is part of the L2J Mobius project.
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package org.l2jmobius.gameserver.cache;
+
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+import java.util.concurrent.ConcurrentHashMap;
+
+import org.l2jmobius.gameserver.data.xml.impl.ArmorSetData;
+import org.l2jmobius.gameserver.model.ArmorSet;
+import org.l2jmobius.gameserver.model.actor.instance.PlayerInstance;
+import org.l2jmobius.gameserver.model.items.instance.ItemInstance;
+import org.l2jmobius.gameserver.model.stats.BaseStat;
+import org.l2jmobius.gameserver.model.stats.Stat;
+
+/**
+ * @author Sahar
+ */
+public final class PaperdollCache
+{
+	private final Set<ItemInstance> _paperdollItems = ConcurrentHashMap.newKeySet();
+	
+	private final Map<BaseStat, Double> _baseStatValues = new ConcurrentHashMap<>();
+	private final Map<Stat, Double> _statValues = new ConcurrentHashMap<>();
+	private int _maxSetEnchant = -1;
+	
+	public Set<ItemInstance> getPaperdollItems()
+	{
+		return _paperdollItems;
+	}
+	
+	public void clearCachedStats()
+	{
+		_baseStatValues.clear();
+		_statValues.clear();
+		
+		clearMaxSetEnchant();
+	}
+	
+	public void clearMaxSetEnchant()
+	{
+		_maxSetEnchant = -1;
+	}
+	
+	public double getBaseStatValue(PlayerInstance player, final BaseStat stat)
+	{
+		final Double baseStatValue = _baseStatValues.get(stat);
+		if (baseStatValue != null)
+		{
+			return baseStatValue;
+		}
+		
+		final Set<ArmorSet> appliedSets = new HashSet<>(2);
+		double value = 0;
+		for (ItemInstance item : _paperdollItems)
+		{
+			for (ArmorSet set : ArmorSetData.getInstance().getSets(item.getId()))
+			{
+				if ((set.getPiecesCountById(player) >= set.getMinimumPieces()) && appliedSets.add(set))
+				{
+					value += set.getStatsBonus(stat);
+				}
+			}
+		}
+		
+		_baseStatValues.put(stat, value);
+		return value;
+	}
+	
+	public int getMaxSetEnchant(PlayerInstance player)
+	{
+		int maxSetEnchant = _maxSetEnchant;
+		if (maxSetEnchant >= 0)
+		{
+			return maxSetEnchant;
+		}
+		
+		maxSetEnchant = 0;
+		for (ItemInstance item : _paperdollItems)
+		{
+			for (ArmorSet set : ArmorSetData.getInstance().getSets(item.getId()))
+			{
+				final int enchantEffect = set.getLowestSetEnchant(player);
+				if (enchantEffect > maxSetEnchant)
+				{
+					maxSetEnchant = enchantEffect;
+				}
+			}
+		}
+		
+		_maxSetEnchant = maxSetEnchant;
+		return maxSetEnchant;
+	}
+	
+	public double getStats(Stat stat)
+	{
+		final Double statValue = _statValues.get(stat);
+		if (statValue != null)
+		{
+			return statValue;
+		}
+		
+		double value = 0;
+		for (ItemInstance item : _paperdollItems)
+		{
+			value += item.getItem().getStats(stat, 0);
+		}
+		
+		_statValues.put(stat, value);
+		return value;
+	}
+}

L2J_Mobius_Classic_2.2_Antharas/java/org/l2jmobius/gameserver/model/itemcontainer/Inventory.java

@@ -33,6 +33,7 @@ import java.util.logging.Logger;
 import org.l2jmobius.Config;
 import org.l2jmobius.commons.database.DatabaseFactory;
 import org.l2jmobius.commons.util.CommonUtil;
+import org.l2jmobius.gameserver.cache.PaperdollCache;
 import org.l2jmobius.gameserver.data.xml.impl.AppearanceItemData;
 import org.l2jmobius.gameserver.data.xml.impl.ArmorSetData;
 import org.l2jmobius.gameserver.datatables.ItemTable;
@@ -128,6 +129,7 @@ public abstract class Inventory extends ItemContainer
 	
 	private final ItemInstance[] _paperdoll;
 	private final List<PaperdollListener> _paperdollListeners;
+	private final PaperdollCache _paperdollCache = new PaperdollCache();
 	
 	// protected to be accessed from child classes only
 	protected int _totalWeight;
@@ -1238,6 +1240,8 @@ public abstract class Inventory extends ItemContainer
 			if (old != null)
 			{
 				_paperdoll[slot] = null;
+				_paperdollCache.getPaperdollItems().remove(old);
+				
 				// Put old item from paperdoll slot to base location
 				old.setItemLocation(getBaseLocation());
 				old.setLastChange(ItemInstance.MODIFIED);
@@ -1268,6 +1272,8 @@ public abstract class Inventory extends ItemContainer
 			if (item != null)
 			{
 				_paperdoll[slot] = item;
+				_paperdollCache.getPaperdollItems().add(item);
+				
 				item.setItemLocation(getEquipLocation(), slot);
 				item.setLastChange(ItemInstance.MODIFIED);
 				_wearedMask |= item.getItem().getItemMask();
@@ -1283,6 +1289,7 @@ public abstract class Inventory extends ItemContainer
 				item.updateDatabase();
 			}
 			
+			_paperdollCache.clearCachedStats();
 			getOwner().getStat().recalculateStats(!getOwner().isPlayer());
 			
 			if (getOwner().isPlayer())
@@ -2145,19 +2152,7 @@ public abstract class Inventory extends ItemContainer
 		}
 		
 		final PlayerInstance player = getOwner().getActingPlayer();
-		int maxSetEnchant = 0;
-		for (ItemInstance item : getPaperdollItems())
-		{
-			for (ArmorSet set : ArmorSetData.getInstance().getSets(item.getId()))
-			{
-				final int enchantEffect = set.getLowestSetEnchant(player);
-				if (enchantEffect > maxSetEnchant)
-				{
-					maxSetEnchant = enchantEffect;
-				}
-			}
-		}
-		return maxSetEnchant;
+		return _paperdollCache.getMaxSetEnchant(player);
 	}
 	
 	public int getWeaponEnchant()
@@ -2221,6 +2216,11 @@ public abstract class Inventory extends ItemContainer
 	@SafeVarargs
 	public final Collection<ItemInstance> getPaperdollItems(Predicate<ItemInstance>... filters)
 	{
+		if (filters.length == 0)
+		{
+			return _paperdollCache.getPaperdollItems();
+		}
+		
 		Predicate<ItemInstance> filter = Objects::nonNull;
 		for (Predicate<ItemInstance> additionalFilter : filters)
 		{
@@ -2241,6 +2241,11 @@ public abstract class Inventory extends ItemContainer
 	@SafeVarargs
 	public final int getPaperdollItemCount(Predicate<ItemInstance>... filters)
 	{
+		if (filters.length == 0)
+		{
+			return _paperdollCache.getPaperdollItems().size();
+		}
+		
 		Predicate<ItemInstance> filter = Objects::nonNull;
 		for (Predicate<ItemInstance> additionalFilter : filters)
 		{
@@ -2257,4 +2262,9 @@ public abstract class Inventory extends ItemContainer
 		}
 		return count;
 	}
+	
+	public PaperdollCache getPaperdollCache()
+	{
+		return _paperdollCache;
+	}
 }

L2J_Mobius_Classic_2.2_Antharas/java/org/l2jmobius/gameserver/model/stats/BaseStat.java

@@ -38,6 +38,8 @@ public enum BaseStat
 	CON(Stat.STAT_CON),
 	MEN(Stat.STAT_MEN);
 	
+	private static final BaseStat[] VALUES = BaseStat.values();
+	
 	public static final int MAX_STAT_VALUE = 201;
 	
 	private final double[] _bonus = new double[MAX_STAT_VALUE];
@@ -90,7 +92,7 @@ public enum BaseStat
 	
 	public static BaseStat valueOf(Stat stat)
 	{
-		for (BaseStat baseStat : values())
+		for (BaseStat baseStat : VALUES)
 		{
 			if (baseStat.getStat() == stat)
 			{

L2J_Mobius_Classic_2.2_Antharas/java/org/l2jmobius/gameserver/model/stats/IStatFunction.java

@@ -92,10 +92,7 @@ public interface IStatFunction
 			final Inventory inv = creature.getInventory();
 			if (inv != null)
 			{
-				for (ItemInstance item : inv.getPaperdollItems())
-				{
-					baseValue += item.getItem().getStats(stat, 0);
-				}
+				baseValue += inv.getPaperdollCache().getStats(stat);
 			}
 		}
 		

L2J_Mobius_Classic_2.2_Antharas/java/org/l2jmobius/gameserver/model/stats/finalizers/BaseStatFinalizer.java

@@ -16,15 +16,10 @@
  */
 package org.l2jmobius.gameserver.model.stats.finalizers;
 
-import java.util.HashSet;
 import java.util.OptionalDouble;
-import java.util.Set;
 
-import org.l2jmobius.gameserver.data.xml.impl.ArmorSetData;
-import org.l2jmobius.gameserver.model.ArmorSet;
 import org.l2jmobius.gameserver.model.actor.Creature;
 import org.l2jmobius.gameserver.model.actor.instance.PlayerInstance;
-import org.l2jmobius.gameserver.model.items.instance.ItemInstance;
 import org.l2jmobius.gameserver.model.stats.BaseStat;
 import org.l2jmobius.gameserver.model.stats.IStatFunction;
 import org.l2jmobius.gameserver.model.stats.Stat;
@@ -46,19 +41,9 @@ public class BaseStatFinalizer implements IStatFunction
 		if (creature.isPlayer())
 		{
 			final PlayerInstance player = creature.getActingPlayer();
-			final Set<ArmorSet> appliedSets = new HashSet<>(2);
 			
 			// Armor sets calculation
-			for (ItemInstance item : player.getInventory().getPaperdollItems())
-			{
-				for (ArmorSet set : ArmorSetData.getInstance().getSets(item.getId()))
-				{
-					if ((set.getPiecesCountById(player) >= set.getMinimumPieces()) && appliedSets.add(set))
-					{
-						baseValue += set.getStatsBonus(BaseStat.valueOf(stat));
-					}
-				}
-			}
+			baseValue += player.getInventory().getPaperdollCache().getBaseStatValue(player, BaseStat.valueOf(stat));
 			
 			// Henna calculation
 			baseValue += player.getHennaValue(BaseStat.valueOf(stat));

L2J_Mobius_Classic_2.2_Antharas/java/org/l2jmobius/gameserver/network/clientpackets/RequestEnchantItem.java

@@ -255,6 +255,7 @@ public class RequestEnchantItem implements IClientIncomingPacket
 								}
 							});
 						}
+						player.getInventory().getPaperdollCache().clearMaxSetEnchant();
 						player.broadcastUserInfo(); // update user info
 					}
 					break;

L2J_Mobius_Classic_2.3_SevenSigns/java/org/l2jmobius/gameserver/cache/PaperdollCache.java

@@ -0,0 +1,127 @@
+/*
+ * This file is part of the L2J Mobius project.
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package org.l2jmobius.gameserver.cache;
+
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+import java.util.concurrent.ConcurrentHashMap;
+
+import org.l2jmobius.gameserver.data.xml.impl.ArmorSetData;
+import org.l2jmobius.gameserver.model.ArmorSet;
+import org.l2jmobius.gameserver.model.actor.instance.PlayerInstance;
+import org.l2jmobius.gameserver.model.items.instance.ItemInstance;
+import org.l2jmobius.gameserver.model.stats.BaseStat;
+import org.l2jmobius.gameserver.model.stats.Stat;
+
+/**
+ * @author Sahar
+ */
+public final class PaperdollCache
+{
+	private final Set<ItemInstance> _paperdollItems = ConcurrentHashMap.newKeySet();
+	
+	private final Map<BaseStat, Double> _baseStatValues = new ConcurrentHashMap<>();
+	private final Map<Stat, Double> _statValues = new ConcurrentHashMap<>();
+	private int _maxSetEnchant = -1;
+	
+	public Set<ItemInstance> getPaperdollItems()
+	{
+		return _paperdollItems;
+	}
+	
+	public void clearCachedStats()
+	{
+		_baseStatValues.clear();
+		_statValues.clear();
+		
+		clearMaxSetEnchant();
+	}
+	
+	public void clearMaxSetEnchant()
+	{
+		_maxSetEnchant = -1;
+	}
+	
+	public double getBaseStatValue(PlayerInstance player, final BaseStat stat)
+	{
+		final Double baseStatValue = _baseStatValues.get(stat);
+		if (baseStatValue != null)
+		{
+			return baseStatValue;
+		}
+		
+		final Set<ArmorSet> appliedSets = new HashSet<>(2);
+		double value = 0;
+		for (ItemInstance item : _paperdollItems)
+		{
+			for (ArmorSet set : ArmorSetData.getInstance().getSets(item.getId()))
+			{
+				if ((set.getPiecesCountById(player) >= set.getMinimumPieces()) && appliedSets.add(set))
+				{
+					value += set.getStatsBonus(stat);
+				}
+			}
+		}
+		
+		_baseStatValues.put(stat, value);
+		return value;
+	}
+	
+	public int getMaxSetEnchant(PlayerInstance player)
+	{
+		int maxSetEnchant = _maxSetEnchant;
+		if (maxSetEnchant >= 0)
+		{
+			return maxSetEnchant;
+		}
+		
+		maxSetEnchant = 0;
+		for (ItemInstance item : _paperdollItems)
+		{
+			for (ArmorSet set : ArmorSetData.getInstance().getSets(item.getId()))
+			{
+				final int enchantEffect = set.getLowestSetEnchant(player);
+				if (enchantEffect > maxSetEnchant)
+				{
+					maxSetEnchant = enchantEffect;
+				}
+			}
+		}
+		
+		_maxSetEnchant = maxSetEnchant;
+		return maxSetEnchant;
+	}
+	
+	public double getStats(Stat stat)
+	{
+		final Double statValue = _statValues.get(stat);
+		if (statValue != null)
+		{
+			return statValue;
+		}
+		
+		double value = 0;
+		for (ItemInstance item : _paperdollItems)
+		{
+			value += item.getItem().getStats(stat, 0);
+		}
+		
+		_statValues.put(stat, value);
+		return value;
+	}
+}

L2J_Mobius_Classic_2.3_SevenSigns/java/org/l2jmobius/gameserver/model/itemcontainer/Inventory.java

@@ -33,6 +33,7 @@ import java.util.logging.Logger;
 import org.l2jmobius.Config;
 import org.l2jmobius.commons.database.DatabaseFactory;
 import org.l2jmobius.commons.util.CommonUtil;
+import org.l2jmobius.gameserver.cache.PaperdollCache;
 import org.l2jmobius.gameserver.data.xml.impl.AppearanceItemData;
 import org.l2jmobius.gameserver.data.xml.impl.ArmorSetData;
 import org.l2jmobius.gameserver.datatables.ItemTable;
@@ -151,6 +152,7 @@ public abstract class Inventory extends ItemContainer
 	
 	private final ItemInstance[] _paperdoll;
 	private final List<PaperdollListener> _paperdollListeners;
+	private final PaperdollCache _paperdollCache = new PaperdollCache();
 	
 	// protected to be accessed from child classes only
 	protected int _totalWeight;
@@ -1314,6 +1316,8 @@ public abstract class Inventory extends ItemContainer
 			if (old != null)
 			{
 				_paperdoll[slot] = null;
+				_paperdollCache.getPaperdollItems().remove(old);
+				
 				// Put old item from paperdoll slot to base location
 				old.setItemLocation(getBaseLocation());
 				old.setLastChange(ItemInstance.MODIFIED);
@@ -1344,6 +1348,8 @@ public abstract class Inventory extends ItemContainer
 			if (item != null)
 			{
 				_paperdoll[slot] = item;
+				_paperdollCache.getPaperdollItems().add(item);
+				
 				item.setItemLocation(getEquipLocation(), slot);
 				item.setLastChange(ItemInstance.MODIFIED);
 				_wearedMask |= item.getItem().getItemMask();
@@ -1359,6 +1365,7 @@ public abstract class Inventory extends ItemContainer
 				item.updateDatabase();
 			}
 			
+			_paperdollCache.clearCachedStats();
 			getOwner().getStat().recalculateStats(!getOwner().isPlayer());
 			
 			if (getOwner().isPlayer())
@@ -2436,19 +2443,7 @@ public abstract class Inventory extends ItemContainer
 		}
 		
 		final PlayerInstance player = getOwner().getActingPlayer();
-		int maxSetEnchant = 0;
-		for (ItemInstance item : getPaperdollItems())
-		{
-			for (ArmorSet set : ArmorSetData.getInstance().getSets(item.getId()))
-			{
-				final int enchantEffect = set.getLowestSetEnchant(player);
-				if (enchantEffect > maxSetEnchant)
-				{
-					maxSetEnchant = enchantEffect;
-				}
-			}
-		}
-		return maxSetEnchant;
+		return _paperdollCache.getMaxSetEnchant(player);
 	}
 	
 	public int getWeaponEnchant()
@@ -2512,6 +2507,11 @@ public abstract class Inventory extends ItemContainer
 	@SafeVarargs
 	public final Collection<ItemInstance> getPaperdollItems(Predicate<ItemInstance>... filters)
 	{
+		if (filters.length == 0)
+		{
+			return _paperdollCache.getPaperdollItems();
+		}
+		
 		Predicate<ItemInstance> filter = Objects::nonNull;
 		for (Predicate<ItemInstance> additionalFilter : filters)
 		{
@@ -2532,6 +2532,11 @@ public abstract class Inventory extends ItemContainer
 	@SafeVarargs
 	public final int getPaperdollItemCount(Predicate<ItemInstance>... filters)
 	{
+		if (filters.length == 0)
+		{
+			return _paperdollCache.getPaperdollItems().size();
+		}
+		
 		Predicate<ItemInstance> filter = Objects::nonNull;
 		for (Predicate<ItemInstance> additionalFilter : filters)
 		{
@@ -2548,4 +2553,9 @@ public abstract class Inventory extends ItemContainer
 		}
 		return count;
 	}
+	
+	public PaperdollCache getPaperdollCache()
+	{
+		return _paperdollCache;
+	}
 }

L2J_Mobius_Classic_2.3_SevenSigns/java/org/l2jmobius/gameserver/model/stats/BaseStat.java

@@ -38,6 +38,8 @@ public enum BaseStat
 	CON(Stat.STAT_CON),
 	MEN(Stat.STAT_MEN);
 	
+	private static final BaseStat[] VALUES = BaseStat.values();
+	
 	public static final int MAX_STAT_VALUE = 201;
 	
 	private final double[] _bonus = new double[MAX_STAT_VALUE];
@@ -90,7 +92,7 @@ public enum BaseStat
 	
 	public static BaseStat valueOf(Stat stat)
 	{
-		for (BaseStat baseStat : values())
+		for (BaseStat baseStat : VALUES)
 		{
 			if (baseStat.getStat() == stat)
 			{

L2J_Mobius_Classic_2.3_SevenSigns/java/org/l2jmobius/gameserver/model/stats/IStatFunction.java

@@ -92,10 +92,7 @@ public interface IStatFunction
 			final Inventory inv = creature.getInventory();
 			if (inv != null)
 			{
-				for (ItemInstance item : inv.getPaperdollItems())
-				{
-					baseValue += item.getItem().getStats(stat, 0);
-				}
+				baseValue += inv.getPaperdollCache().getStats(stat);
 			}
 		}
 		

L2J_Mobius_Classic_2.3_SevenSigns/java/org/l2jmobius/gameserver/model/stats/finalizers/BaseStatFinalizer.java

@@ -16,15 +16,10 @@
  */
 package org.l2jmobius.gameserver.model.stats.finalizers;
 
-import java.util.HashSet;
 import java.util.OptionalDouble;
-import java.util.Set;
 
-import org.l2jmobius.gameserver.data.xml.impl.ArmorSetData;
-import org.l2jmobius.gameserver.model.ArmorSet;
 import org.l2jmobius.gameserver.model.actor.Creature;
 import org.l2jmobius.gameserver.model.actor.instance.PlayerInstance;
-import org.l2jmobius.gameserver.model.items.instance.ItemInstance;
 import org.l2jmobius.gameserver.model.stats.BaseStat;
 import org.l2jmobius.gameserver.model.stats.IStatFunction;
 import org.l2jmobius.gameserver.model.stats.Stat;
@@ -46,19 +41,9 @@ public class BaseStatFinalizer implements IStatFunction
 		if (creature.isPlayer())
 		{
 			final PlayerInstance player = creature.getActingPlayer();
-			final Set<ArmorSet> appliedSets = new HashSet<>(2);
 			
 			// Armor sets calculation
-			for (ItemInstance item : player.getInventory().getPaperdollItems())
-			{
-				for (ArmorSet set : ArmorSetData.getInstance().getSets(item.getId()))
-				{
-					if ((set.getPiecesCountById(player) >= set.getMinimumPieces()) && appliedSets.add(set))
-					{
-						baseValue += set.getStatsBonus(BaseStat.valueOf(stat));
-					}
-				}
-			}
+			baseValue += player.getInventory().getPaperdollCache().getBaseStatValue(player, BaseStat.valueOf(stat));
 			
 			// Henna calculation
 			baseValue += player.getHennaValue(BaseStat.valueOf(stat));

L2J_Mobius_Classic_2.3_SevenSigns/java/org/l2jmobius/gameserver/network/clientpackets/RequestEnchantItem.java

@@ -255,6 +255,7 @@ public class RequestEnchantItem implements IClientIncomingPacket
 								}
 							});
 						}
+						player.getInventory().getPaperdollCache().clearMaxSetEnchant();
 						player.broadcastUserInfo(); // update user info
 					}
 					break;

L2J_Mobius_Classic_2.4_SecretOfEmpire/java/org/l2jmobius/gameserver/cache/PaperdollCache.java

@@ -0,0 +1,127 @@
+/*
+ * This file is part of the L2J Mobius project.
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package org.l2jmobius.gameserver.cache;
+
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+import java.util.concurrent.ConcurrentHashMap;
+
+import org.l2jmobius.gameserver.data.xml.impl.ArmorSetData;
+import org.l2jmobius.gameserver.model.ArmorSet;
+import org.l2jmobius.gameserver.model.actor.instance.PlayerInstance;
+import org.l2jmobius.gameserver.model.items.instance.ItemInstance;
+import org.l2jmobius.gameserver.model.stats.BaseStat;
+import org.l2jmobius.gameserver.model.stats.Stat;
+
+/**
+ * @author Sahar
+ */
+public final class PaperdollCache
+{
+	private final Set<ItemInstance> _paperdollItems = ConcurrentHashMap.newKeySet();
+	
+	private final Map<BaseStat, Double> _baseStatValues = new ConcurrentHashMap<>();
+	private final Map<Stat, Double> _statValues = new ConcurrentHashMap<>();
+	private int _maxSetEnchant = -1;
+	
+	public Set<ItemInstance> getPaperdollItems()
+	{
+		return _paperdollItems;
+	}
+	
+	public void clearCachedStats()
+	{
+		_baseStatValues.clear();
+		_statValues.clear();
+		
+		clearMaxSetEnchant();
+	}
+	
+	public void clearMaxSetEnchant()
+	{
+		_maxSetEnchant = -1;
+	}
+	
+	public double getBaseStatValue(PlayerInstance player, final BaseStat stat)
+	{
+		final Double baseStatValue = _baseStatValues.get(stat);
+		if (baseStatValue != null)
+		{
+			return baseStatValue;
+		}
+		
+		final Set<ArmorSet> appliedSets = new HashSet<>(2);
+		double value = 0;
+		for (ItemInstance item : _paperdollItems)
+		{
+			for (ArmorSet set : ArmorSetData.getInstance().getSets(item.getId()))
+			{
+				if ((set.getPiecesCountById(player) >= set.getMinimumPieces()) && appliedSets.add(set))
+				{
+					value += set.getStatsBonus(stat);
+				}
+			}
+		}
+		
+		_baseStatValues.put(stat, value);
+		return value;
+	}
+	
+	public int getMaxSetEnchant(PlayerInstance player)
+	{
+		int maxSetEnchant = _maxSetEnchant;
+		if (maxSetEnchant >= 0)
+		{
+			return maxSetEnchant;
+		}
+		
+		maxSetEnchant = 0;
+		for (ItemInstance item : _paperdollItems)
+		{
+			for (ArmorSet set : ArmorSetData.getInstance().getSets(item.getId()))
+			{
+				final int enchantEffect = set.getLowestSetEnchant(player);
+				if (enchantEffect > maxSetEnchant)
+				{
+					maxSetEnchant = enchantEffect;
+				}
+			}
+		}
+		
+		_maxSetEnchant = maxSetEnchant;
+		return maxSetEnchant;
+	}
+	
+	public double getStats(Stat stat)
+	{
+		final Double statValue = _statValues.get(stat);
+		if (statValue != null)
+		{
+			return statValue;
+		}
+		
+		double value = 0;
+		for (ItemInstance item : _paperdollItems)
+		{
+			value += item.getItem().getStats(stat, 0);
+		}
+		
+		_statValues.put(stat, value);
+		return value;
+	}
+}

L2J_Mobius_Classic_2.4_SecretOfEmpire/java/org/l2jmobius/gameserver/model/itemcontainer/Inventory.java

@@ -33,6 +33,7 @@ import java.util.logging.Logger;
 import org.l2jmobius.Config;
 import org.l2jmobius.commons.database.DatabaseFactory;
 import org.l2jmobius.commons.util.CommonUtil;
+import org.l2jmobius.gameserver.cache.PaperdollCache;
 import org.l2jmobius.gameserver.data.xml.impl.AppearanceItemData;
 import org.l2jmobius.gameserver.data.xml.impl.ArmorSetData;
 import org.l2jmobius.gameserver.datatables.ItemTable;
@@ -151,6 +152,7 @@ public abstract class Inventory extends ItemContainer
 	
 	private final ItemInstance[] _paperdoll;
 	private final List<PaperdollListener> _paperdollListeners;
+	private final PaperdollCache _paperdollCache = new PaperdollCache();
 	
 	// protected to be accessed from child classes only
 	protected int _totalWeight;
@@ -1314,6 +1316,8 @@ public abstract class Inventory extends ItemContainer
 			if (old != null)
 			{
 				_paperdoll[slot] = null;
+				_paperdollCache.getPaperdollItems().remove(old);
+				
 				// Put old item from paperdoll slot to base location
 				old.setItemLocation(getBaseLocation());
 				old.setLastChange(ItemInstance.MODIFIED);
@@ -1344,6 +1348,8 @@ public abstract class Inventory extends ItemContainer
 			if (item != null)
 			{
 				_paperdoll[slot] = item;
+				_paperdollCache.getPaperdollItems().add(item);
+				
 				item.setItemLocation(getEquipLocation(), slot);
 				item.setLastChange(ItemInstance.MODIFIED);
 				_wearedMask |= item.getItem().getItemMask();
@@ -1359,6 +1365,7 @@ public abstract class Inventory extends ItemContainer
 				item.updateDatabase();
 			}
 			
+			_paperdollCache.clearCachedStats();
 			getOwner().getStat().recalculateStats(!getOwner().isPlayer());
 			
 			if (getOwner().isPlayer())
@@ -2436,19 +2443,7 @@ public abstract class Inventory extends ItemContainer
 		}
 		
 		final PlayerInstance player = getOwner().getActingPlayer();
-		int maxSetEnchant = 0;
-		for (ItemInstance item : getPaperdollItems())
-		{
-			for (ArmorSet set : ArmorSetData.getInstance().getSets(item.getId()))
-			{
-				final int enchantEffect = set.getLowestSetEnchant(player);
-				if (enchantEffect > maxSetEnchant)
-				{
-					maxSetEnchant = enchantEffect;
-				}
-			}
-		}
-		return maxSetEnchant;
+		return _paperdollCache.getMaxSetEnchant(player);
 	}
 	
 	public int getWeaponEnchant()
@@ -2512,6 +2507,11 @@ public abstract class Inventory extends ItemContainer
 	@SafeVarargs
 	public final Collection<ItemInstance> getPaperdollItems(Predicate<ItemInstance>... filters)
 	{
+		if (filters.length == 0)
+		{
+			return _paperdollCache.getPaperdollItems();
+		}
+		
 		Predicate<ItemInstance> filter = Objects::nonNull;
 		for (Predicate<ItemInstance> additionalFilter : filters)
 		{
@@ -2532,6 +2532,11 @@ public abstract class Inventory extends ItemContainer
 	@SafeVarargs
 	public final int getPaperdollItemCount(Predicate<ItemInstance>... filters)
 	{
+		if (filters.length == 0)
+		{
+			return _paperdollCache.getPaperdollItems().size();
+		}
+		
 		Predicate<ItemInstance> filter = Objects::nonNull;
 		for (Predicate<ItemInstance> additionalFilter : filters)
 		{
@@ -2548,4 +2553,9 @@ public abstract class Inventory extends ItemContainer
 		}
 		return count;
 	}
+	
+	public PaperdollCache getPaperdollCache()
+	{
+		return _paperdollCache;
+	}
 }

L2J_Mobius_Classic_2.4_SecretOfEmpire/java/org/l2jmobius/gameserver/model/stats/BaseStat.java

@@ -38,6 +38,8 @@ public enum BaseStat
 	CON(Stat.STAT_CON),
 	MEN(Stat.STAT_MEN);
 	
+	private static final BaseStat[] VALUES = BaseStat.values();
+	
 	public static final int MAX_STAT_VALUE = 201;
 	
 	private final double[] _bonus = new double[MAX_STAT_VALUE];
@@ -90,7 +92,7 @@ public enum BaseStat
 	
 	public static BaseStat valueOf(Stat stat)
 	{
-		for (BaseStat baseStat : values())
+		for (BaseStat baseStat : VALUES)
 		{
 			if (baseStat.getStat() == stat)
 			{

L2J_Mobius_Classic_2.4_SecretOfEmpire/java/org/l2jmobius/gameserver/model/stats/IStatFunction.java

@@ -92,10 +92,7 @@ public interface IStatFunction
 			final Inventory inv = creature.getInventory();
 			if (inv != null)
 			{
-				for (ItemInstance item : inv.getPaperdollItems())
-				{
-					baseValue += item.getItem().getStats(stat, 0);
-				}
+				baseValue += inv.getPaperdollCache().getStats(stat);
 			}
 		}
 		

L2J_Mobius_Classic_2.4_SecretOfEmpire/java/org/l2jmobius/gameserver/model/stats/finalizers/BaseStatFinalizer.java

@@ -16,15 +16,10 @@
  */
 package org.l2jmobius.gameserver.model.stats.finalizers;
 
-import java.util.HashSet;
 import java.util.OptionalDouble;
-import java.util.Set;
 
-import org.l2jmobius.gameserver.data.xml.impl.ArmorSetData;
-import org.l2jmobius.gameserver.model.ArmorSet;
 import org.l2jmobius.gameserver.model.actor.Creature;
 import org.l2jmobius.gameserver.model.actor.instance.PlayerInstance;
-import org.l2jmobius.gameserver.model.items.instance.ItemInstance;
 import org.l2jmobius.gameserver.model.stats.BaseStat;
 import org.l2jmobius.gameserver.model.stats.IStatFunction;
 import org.l2jmobius.gameserver.model.stats.Stat;
@@ -46,19 +41,9 @@ public class BaseStatFinalizer implements IStatFunction
 		if (creature.isPlayer())
 		{
 			final PlayerInstance player = creature.getActingPlayer();
-			final Set<ArmorSet> appliedSets = new HashSet<>(2);
 			
 			// Armor sets calculation
-			for (ItemInstance item : player.getInventory().getPaperdollItems())
-			{
-				for (ArmorSet set : ArmorSetData.getInstance().getSets(item.getId()))
-				{
-					if ((set.getPiecesCountById(player) >= set.getMinimumPieces()) && appliedSets.add(set))
-					{
-						baseValue += set.getStatsBonus(BaseStat.valueOf(stat));
-					}
-				}
-			}
+			baseValue += player.getInventory().getPaperdollCache().getBaseStatValue(player, BaseStat.valueOf(stat));
 			
 			// Henna calculation
 			baseValue += player.getHennaValue(BaseStat.valueOf(stat));

L2J_Mobius_Classic_2.4_SecretOfEmpire/java/org/l2jmobius/gameserver/network/clientpackets/RequestEnchantItem.java

@@ -257,6 +257,7 @@ public class RequestEnchantItem implements IClientIncomingPacket
 								}
 							});
 						}
+						player.getInventory().getPaperdollCache().clearMaxSetEnchant();
 						player.broadcastUserInfo(); // update user info
 					}
 					break;

L2J_Mobius_Classic_3.0_TheKamael/java/org/l2jmobius/gameserver/cache/PaperdollCache.java

@@ -0,0 +1,127 @@
+/*
+ * This file is part of the L2J Mobius project.
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package org.l2jmobius.gameserver.cache;
+
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+import java.util.concurrent.ConcurrentHashMap;
+
+import org.l2jmobius.gameserver.data.xml.impl.ArmorSetData;
+import org.l2jmobius.gameserver.model.ArmorSet;
+import org.l2jmobius.gameserver.model.actor.instance.PlayerInstance;
+import org.l2jmobius.gameserver.model.items.instance.ItemInstance;
+import org.l2jmobius.gameserver.model.stats.BaseStat;
+import org.l2jmobius.gameserver.model.stats.Stat;
+
+/**
+ * @author Sahar
+ */
+public final class PaperdollCache
+{
+	private final Set<ItemInstance> _paperdollItems = ConcurrentHashMap.newKeySet();
+	
+	private final Map<BaseStat, Double> _baseStatValues = new ConcurrentHashMap<>();
+	private final Map<Stat, Double> _statValues = new ConcurrentHashMap<>();
+	private int _maxSetEnchant = -1;
+	
+	public Set<ItemInstance> getPaperdollItems()
+	{
+		return _paperdollItems;
+	}
+	
+	public void clearCachedStats()
+	{
+		_baseStatValues.clear();
+		_statValues.clear();
+		
+		clearMaxSetEnchant();
+	}
+	
+	public void clearMaxSetEnchant()
+	{
+		_maxSetEnchant = -1;
+	}
+	
+	public double getBaseStatValue(PlayerInstance player, final BaseStat stat)
+	{
+		final Double baseStatValue = _baseStatValues.get(stat);
+		if (baseStatValue != null)
+		{
+			return baseStatValue;
+		}
+		
+		final Set<ArmorSet> appliedSets = new HashSet<>(2);
+		double value = 0;
+		for (ItemInstance item : _paperdollItems)
+		{
+			for (ArmorSet set : ArmorSetData.getInstance().getSets(item.getId()))
+			{
+				if ((set.getPiecesCountById(player) >= set.getMinimumPieces()) && appliedSets.add(set))
+				{
+					value += set.getStatsBonus(stat);
+				}
+			}
+		}
+		
+		_baseStatValues.put(stat, value);
+		return value;
+	}
+	
+	public int getMaxSetEnchant(PlayerInstance player)
+	{
+		int maxSetEnchant = _maxSetEnchant;
+		if (maxSetEnchant >= 0)
+		{
+			return maxSetEnchant;
+		}
+		
+		maxSetEnchant = 0;
+		for (ItemInstance item : _paperdollItems)
+		{
+			for (ArmorSet set : ArmorSetData.getInstance().getSets(item.getId()))
+			{
+				final int enchantEffect = set.getLowestSetEnchant(player);
+				if (enchantEffect > maxSetEnchant)
+				{
+					maxSetEnchant = enchantEffect;
+				}
+			}
+		}
+		
+		_maxSetEnchant = maxSetEnchant;
+		return maxSetEnchant;
+	}
+	
+	public double getStats(Stat stat)
+	{
+		final Double statValue = _statValues.get(stat);
+		if (statValue != null)
+		{
+			return statValue;
+		}
+		
+		double value = 0;
+		for (ItemInstance item : _paperdollItems)
+		{
+			value += item.getItem().getStats(stat, 0);
+		}
+		
+		_statValues.put(stat, value);
+		return value;
+	}
+}

L2J_Mobius_Classic_3.0_TheKamael/java/org/l2jmobius/gameserver/model/itemcontainer/Inventory.java

@@ -33,6 +33,7 @@ import java.util.logging.Logger;
 import org.l2jmobius.Config;
 import org.l2jmobius.commons.database.DatabaseFactory;
 import org.l2jmobius.commons.util.CommonUtil;
+import org.l2jmobius.gameserver.cache.PaperdollCache;
 import org.l2jmobius.gameserver.data.xml.impl.AppearanceItemData;
 import org.l2jmobius.gameserver.data.xml.impl.ArmorSetData;
 import org.l2jmobius.gameserver.datatables.ItemTable;
@@ -151,6 +152,7 @@ public abstract class Inventory extends ItemContainer
 	
 	private final ItemInstance[] _paperdoll;
 	private final List<PaperdollListener> _paperdollListeners;
+	private final PaperdollCache _paperdollCache = new PaperdollCache();
 	
 	// protected to be accessed from child classes only
 	protected int _totalWeight;
@@ -1307,6 +1309,8 @@ public abstract class Inventory extends ItemContainer
 			if (old != null)
 			{
 				_paperdoll[slot] = null;
+				_paperdollCache.getPaperdollItems().remove(old);
+				
 				// Put old item from paperdoll slot to base location
 				old.setItemLocation(getBaseLocation());
 				old.setLastChange(ItemInstance.MODIFIED);
@@ -1337,6 +1341,8 @@ public abstract class Inventory extends ItemContainer
 			if (item != null)
 			{
 				_paperdoll[slot] = item;
+				_paperdollCache.getPaperdollItems().add(item);
+				
 				item.setItemLocation(getEquipLocation(), slot);
 				item.setLastChange(ItemInstance.MODIFIED);
 				_wearedMask |= item.getItem().getItemMask();
@@ -1352,6 +1358,7 @@ public abstract class Inventory extends ItemContainer
 				item.updateDatabase();
 			}
 			
+			_paperdollCache.clearCachedStats();
 			getOwner().getStat().recalculateStats(!getOwner().isPlayer());
 			
 			if (getOwner().isPlayer())
@@ -2420,19 +2427,7 @@ public abstract class Inventory extends ItemContainer
 		}
 		
 		final PlayerInstance player = getOwner().getActingPlayer();
-		int maxSetEnchant = 0;
-		for (ItemInstance item : getPaperdollItems())
-		{
-			for (ArmorSet set : ArmorSetData.getInstance().getSets(item.getId()))
-			{
-				final int enchantEffect = set.getLowestSetEnchant(player);
-				if (enchantEffect > maxSetEnchant)
-				{
-					maxSetEnchant = enchantEffect;
-				}
-			}
-		}
-		return maxSetEnchant;
+		return _paperdollCache.getMaxSetEnchant(player);
 	}
 	
 	public int getWeaponEnchant()
@@ -2496,6 +2491,11 @@ public abstract class Inventory extends ItemContainer
 	@SafeVarargs
 	public final Collection<ItemInstance> getPaperdollItems(Predicate<ItemInstance>... filters)
 	{
+		if (filters.length == 0)
+		{
+			return _paperdollCache.getPaperdollItems();
+		}
+		
 		Predicate<ItemInstance> filter = Objects::nonNull;
 		for (Predicate<ItemInstance> additionalFilter : filters)
 		{
@@ -2516,6 +2516,11 @@ public abstract class Inventory extends ItemContainer
 	@SafeVarargs
 	public final int getPaperdollItemCount(Predicate<ItemInstance>... filters)
 	{
+		if (filters.length == 0)
+		{
+			return _paperdollCache.getPaperdollItems().size();
+		}
+		
 		Predicate<ItemInstance> filter = Objects::nonNull;
 		for (Predicate<ItemInstance> additionalFilter : filters)
 		{
@@ -2532,4 +2537,9 @@ public abstract class Inventory extends ItemContainer
 		}
 		return count;
 	}
+	
+	public PaperdollCache getPaperdollCache()
+	{
+		return _paperdollCache;
+	}
 }

L2J_Mobius_Classic_3.0_TheKamael/java/org/l2jmobius/gameserver/model/stats/BaseStat.java

@@ -38,6 +38,8 @@ public enum BaseStat
 	CON(Stat.STAT_CON),
 	MEN(Stat.STAT_MEN);
 	
+	private static final BaseStat[] VALUES = BaseStat.values();
+	
 	public static final int MAX_STAT_VALUE = 201;
 	
 	private final double[] _bonus = new double[MAX_STAT_VALUE];
@@ -90,7 +92,7 @@ public enum BaseStat
 	
 	public static BaseStat valueOf(Stat stat)
 	{
-		for (BaseStat baseStat : values())
+		for (BaseStat baseStat : VALUES)
 		{
 			if (baseStat.getStat() == stat)
 			{

L2J_Mobius_Classic_3.0_TheKamael/java/org/l2jmobius/gameserver/model/stats/IStatFunction.java

@@ -92,10 +92,7 @@ public interface IStatFunction
 			final Inventory inv = creature.getInventory();
 			if (inv != null)
 			{
-				for (ItemInstance item : inv.getPaperdollItems())
-				{
-					baseValue += item.getItem().getStats(stat, 0);
-				}
+				baseValue += inv.getPaperdollCache().getStats(stat);
 			}
 		}
 		

L2J_Mobius_Classic_3.0_TheKamael/java/org/l2jmobius/gameserver/model/stats/finalizers/BaseStatFinalizer.java

@@ -16,15 +16,10 @@
  */
 package org.l2jmobius.gameserver.model.stats.finalizers;
 
-import java.util.HashSet;
 import java.util.OptionalDouble;
-import java.util.Set;
 
-import org.l2jmobius.gameserver.data.xml.impl.ArmorSetData;
-import org.l2jmobius.gameserver.model.ArmorSet;
 import org.l2jmobius.gameserver.model.actor.Creature;
 import org.l2jmobius.gameserver.model.actor.instance.PlayerInstance;
-import org.l2jmobius.gameserver.model.items.instance.ItemInstance;
 import org.l2jmobius.gameserver.model.stats.BaseStat;
 import org.l2jmobius.gameserver.model.stats.IStatFunction;
 import org.l2jmobius.gameserver.model.stats.Stat;
@@ -46,19 +41,9 @@ public class BaseStatFinalizer implements IStatFunction
 		if (creature.isPlayer())
 		{
 			final PlayerInstance player = creature.getActingPlayer();
-			final Set<ArmorSet> appliedSets = new HashSet<>(2);
 			
 			// Armor sets calculation
-			for (ItemInstance item : player.getInventory().getPaperdollItems())
-			{
-				for (ArmorSet set : ArmorSetData.getInstance().getSets(item.getId()))
-				{
-					if ((set.getPiecesCountById(player) >= set.getMinimumPieces()) && appliedSets.add(set))
-					{
-						baseValue += set.getStatsBonus(BaseStat.valueOf(stat));
-					}
-				}
-			}
+			baseValue += player.getInventory().getPaperdollCache().getBaseStatValue(player, BaseStat.valueOf(stat));
 			
 			// Henna calculation
 			baseValue += player.getHennaValue(BaseStat.valueOf(stat));

L2J_Mobius_Classic_3.0_TheKamael/java/org/l2jmobius/gameserver/network/clientpackets/RequestEnchantItem.java

@@ -257,6 +257,7 @@ public class RequestEnchantItem implements IClientIncomingPacket
 								}
 							});
 						}
+						player.getInventory().getPaperdollCache().clearMaxSetEnchant();
 						player.broadcastUserInfo(); // update user info
 					}
 					break;

L2J_Mobius_Classic_Interlude/java/org/l2jmobius/gameserver/cache/PaperdollCache.java

@@ -0,0 +1,127 @@
+/*
+ * This file is part of the L2J Mobius project.
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package org.l2jmobius.gameserver.cache;
+
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+import java.util.concurrent.ConcurrentHashMap;
+
+import org.l2jmobius.gameserver.data.xml.impl.ArmorSetData;
+import org.l2jmobius.gameserver.model.ArmorSet;
+import org.l2jmobius.gameserver.model.actor.instance.PlayerInstance;
+import org.l2jmobius.gameserver.model.items.instance.ItemInstance;
+import org.l2jmobius.gameserver.model.stats.BaseStat;
+import org.l2jmobius.gameserver.model.stats.Stat;
+
+/**
+ * @author Sahar
+ */
+public final class PaperdollCache
+{
+	private final Set<ItemInstance> _paperdollItems = ConcurrentHashMap.newKeySet();
+	
+	private final Map<BaseStat, Double> _baseStatValues = new ConcurrentHashMap<>();
+	private final Map<Stat, Double> _statValues = new ConcurrentHashMap<>();
+	private int _maxSetEnchant = -1;
+	
+	public Set<ItemInstance> getPaperdollItems()
+	{
+		return _paperdollItems;
+	}
+	
+	public void clearCachedStats()
+	{
+		_baseStatValues.clear();
+		_statValues.clear();
+		
+		clearMaxSetEnchant();
+	}
+	
+	public void clearMaxSetEnchant()
+	{
+		_maxSetEnchant = -1;
+	}
+	
+	public double getBaseStatValue(PlayerInstance player, final BaseStat stat)
+	{
+		final Double baseStatValue = _baseStatValues.get(stat);
+		if (baseStatValue != null)
+		{
+			return baseStatValue;
+		}
+		
+		final Set<ArmorSet> appliedSets = new HashSet<>(2);
+		double value = 0;
+		for (ItemInstance item : _paperdollItems)
+		{
+			for (ArmorSet set : ArmorSetData.getInstance().getSets(item.getId()))
+			{
+				if ((set.getPiecesCountById(player) >= set.getMinimumPieces()) && appliedSets.add(set))
+				{
+					value += set.getStatsBonus(stat);
+				}
+			}
+		}
+		
+		_baseStatValues.put(stat, value);
+		return value;
+	}
+	
+	public int getMaxSetEnchant(PlayerInstance player)
+	{
+		int maxSetEnchant = _maxSetEnchant;
+		if (maxSetEnchant >= 0)
+		{
+			return maxSetEnchant;
+		}
+		
+		maxSetEnchant = 0;
+		for (ItemInstance item : _paperdollItems)
+		{
+			for (ArmorSet set : ArmorSetData.getInstance().getSets(item.getId()))
+			{
+				final int enchantEffect = set.getLowestSetEnchant(player);
+				if (enchantEffect > maxSetEnchant)
+				{
+					maxSetEnchant = enchantEffect;
+				}
+			}
+		}
+		
+		_maxSetEnchant = maxSetEnchant;
+		return maxSetEnchant;
+	}
+	
+	public double getStats(Stat stat)
+	{
+		final Double statValue = _statValues.get(stat);
+		if (statValue != null)
+		{
+			return statValue;
+		}
+		
+		double value = 0;
+		for (ItemInstance item : _paperdollItems)
+		{
+			value += item.getItem().getStats(stat, 0);
+		}
+		
+		_statValues.put(stat, value);
+		return value;
+	}
+}

L2J_Mobius_Classic_Interlude/java/org/l2jmobius/gameserver/model/itemcontainer/Inventory.java

@@ -33,6 +33,7 @@ import java.util.logging.Logger;
 import org.l2jmobius.Config;
 import org.l2jmobius.commons.database.DatabaseFactory;
 import org.l2jmobius.commons.util.CommonUtil;
+import org.l2jmobius.gameserver.cache.PaperdollCache;
 import org.l2jmobius.gameserver.data.xml.impl.AppearanceItemData;
 import org.l2jmobius.gameserver.data.xml.impl.ArmorSetData;
 import org.l2jmobius.gameserver.datatables.ItemTable;
@@ -123,6 +124,7 @@ public abstract class Inventory extends ItemContainer
 	
 	private final ItemInstance[] _paperdoll;
 	private final List<PaperdollListener> _paperdollListeners;
+	private final PaperdollCache _paperdollCache = new PaperdollCache();
 	
 	// protected to be accessed from child classes only
 	protected int _totalWeight;
@@ -1209,6 +1211,8 @@ public abstract class Inventory extends ItemContainer
 			if (old != null)
 			{
 				_paperdoll[slot] = null;
+				_paperdollCache.getPaperdollItems().remove(old);
+				
 				// Put old item from paperdoll slot to base location
 				old.setItemLocation(getBaseLocation());
 				old.setLastChange(ItemInstance.MODIFIED);
@@ -1239,6 +1243,8 @@ public abstract class Inventory extends ItemContainer
 			if (item != null)
 			{
 				_paperdoll[slot] = item;
+				_paperdollCache.getPaperdollItems().add(item);
+				
 				item.setItemLocation(getEquipLocation(), slot);
 				item.setLastChange(ItemInstance.MODIFIED);
 				_wearedMask |= item.getItem().getItemMask();
@@ -1254,6 +1260,7 @@ public abstract class Inventory extends ItemContainer
 				item.updateDatabase();
 			}
 			
+			_paperdollCache.clearCachedStats();
 			getOwner().getStat().recalculateStats(!getOwner().isPlayer());
 			
 			if (getOwner().isPlayer())
@@ -2126,19 +2133,7 @@ public abstract class Inventory extends ItemContainer
 		}
 		
 		final PlayerInstance player = getOwner().getActingPlayer();
-		int maxSetEnchant = 0;
-		for (ItemInstance item : getPaperdollItems())
-		{
-			for (ArmorSet set : ArmorSetData.getInstance().getSets(item.getId()))
-			{
-				final int enchantEffect = set.getLowestSetEnchant(player);
-				if (enchantEffect > maxSetEnchant)
-				{
-					maxSetEnchant = enchantEffect;
-				}
-			}
-		}
-		return maxSetEnchant;
+		return _paperdollCache.getMaxSetEnchant(player);
 	}
 	
 	public int getWeaponEnchant()
@@ -2202,6 +2197,11 @@ public abstract class Inventory extends ItemContainer
 	@SafeVarargs
 	public final Collection<ItemInstance> getPaperdollItems(Predicate<ItemInstance>... filters)
 	{
+		if (filters.length == 0)
+		{
+			return _paperdollCache.getPaperdollItems();
+		}
+		
 		Predicate<ItemInstance> filter = Objects::nonNull;
 		for (Predicate<ItemInstance> additionalFilter : filters)
 		{
@@ -2222,6 +2222,11 @@ public abstract class Inventory extends ItemContainer
 	@SafeVarargs
 	public final int getPaperdollItemCount(Predicate<ItemInstance>... filters)
 	{
+		if (filters.length == 0)
+		{
+			return _paperdollCache.getPaperdollItems().size();
+		}
+		
 		Predicate<ItemInstance> filter = Objects::nonNull;
 		for (Predicate<ItemInstance> additionalFilter : filters)
 		{
@@ -2238,4 +2243,9 @@ public abstract class Inventory extends ItemContainer
 		}
 		return count;
 	}
+	
+	public PaperdollCache getPaperdollCache()
+	{
+		return _paperdollCache;
+	}
 }

L2J_Mobius_Classic_Interlude/java/org/l2jmobius/gameserver/model/stats/BaseStat.java

@@ -40,6 +40,8 @@ public enum BaseStat
 	CHA(Stat.STAT_CHA),
 	LUC(Stat.STAT_LUC);
 	
+	private static final BaseStat[] VALUES = BaseStat.values();
+	
 	public static final int MAX_STAT_VALUE = 201;
 	
 	private final double[] _bonus = new double[MAX_STAT_VALUE];
@@ -92,7 +94,7 @@ public enum BaseStat
 	
 	public static BaseStat valueOf(Stat stat)
 	{
-		for (BaseStat baseStat : values())
+		for (BaseStat baseStat : VALUES)
 		{
 			if (baseStat.getStat() == stat)
 			{

L2J_Mobius_Classic_Interlude/java/org/l2jmobius/gameserver/model/stats/IStatFunction.java

@@ -92,10 +92,7 @@ public interface IStatFunction
 			final Inventory inv = creature.getInventory();
 			if (inv != null)
 			{
-				for (ItemInstance item : inv.getPaperdollItems())
-				{
-					baseValue += item.getItem().getStats(stat, 0);
-				}
+				baseValue += inv.getPaperdollCache().getStats(stat);
 			}
 		}
 		

L2J_Mobius_Classic_Interlude/java/org/l2jmobius/gameserver/model/stats/finalizers/BaseStatFinalizer.java

@@ -16,15 +16,10 @@
  */
 package org.l2jmobius.gameserver.model.stats.finalizers;
 
-import java.util.HashSet;
 import java.util.OptionalDouble;
-import java.util.Set;
 
-import org.l2jmobius.gameserver.data.xml.impl.ArmorSetData;
-import org.l2jmobius.gameserver.model.ArmorSet;
 import org.l2jmobius.gameserver.model.actor.Creature;
 import org.l2jmobius.gameserver.model.actor.instance.PlayerInstance;
-import org.l2jmobius.gameserver.model.items.instance.ItemInstance;
 import org.l2jmobius.gameserver.model.stats.BaseStat;
 import org.l2jmobius.gameserver.model.stats.IStatFunction;
 import org.l2jmobius.gameserver.model.stats.Stat;
@@ -46,19 +41,9 @@ public class BaseStatFinalizer implements IStatFunction
 		if (creature.isPlayer())
 		{
 			final PlayerInstance player = creature.getActingPlayer();
-			final Set<ArmorSet> appliedSets = new HashSet<>(2);
 			
 			// Armor sets calculation
-			for (ItemInstance item : player.getInventory().getPaperdollItems())
-			{
-				for (ArmorSet set : ArmorSetData.getInstance().getSets(item.getId()))
-				{
-					if ((set.getPiecesCountById(player) >= set.getMinimumPieces()) && appliedSets.add(set))
-					{
-						baseValue += set.getStatsBonus(BaseStat.valueOf(stat));
-					}
-				}
-			}
+			baseValue += player.getInventory().getPaperdollCache().getBaseStatValue(player, BaseStat.valueOf(stat));
 			
 			// Henna calculation
 			baseValue += player.getHennaValue(BaseStat.valueOf(stat));

L2J_Mobius_Classic_Interlude/java/org/l2jmobius/gameserver/network/clientpackets/RequestEnchantItem.java

@@ -255,6 +255,7 @@ public class RequestEnchantItem implements IClientIncomingPacket
 								}
 							});
 						}
+						player.getInventory().getPaperdollCache().clearMaxSetEnchant();
 						player.broadcastUserInfo(); // update user info
 					}
 					break;