Starting development on a Player name and id framework with bult in caching. Still missing index for reverse lookup speed improvement. Still missing information updates on player join.

src/com/massivecraft/mcore/MCore.java

@@ -2,6 +2,8 @@ package com.massivecraft.mcore;
 
 import java.lang.reflect.Modifier;
 import java.util.List;
+import java.util.Map;
+import java.util.Map.Entry;
 import java.util.Random;
 import java.util.UUID;
 
@@ -29,7 +31,9 @@ import com.massivecraft.mcore.ps.PSAdapter;
 import com.massivecraft.mcore.store.Coll;
 import com.massivecraft.mcore.store.ExamineThread;
 import com.massivecraft.mcore.teleport.EngineScheduledTeleport;
+import com.massivecraft.mcore.util.MUtil;
 import com.massivecraft.mcore.util.PlayerUtil;
+import com.massivecraft.mcore.util.Txt;
 import com.massivecraft.mcore.xlib.bson.types.ObjectId;
 import com.massivecraft.mcore.xlib.gson.Gson;
 import com.massivecraft.mcore.xlib.gson.GsonBuilder;
@@ -155,6 +159,7 @@ public class MCore extends MPlugin
 		MultiverseColl.get().init();
 		AspectColl.get().init();
 		MCoreConfColl.get().init();
+		MCoreMPlayerColl.get().init();
 		
 		// Register commands
 		this.outerCmdMCore = new CmdMCore() { public List<String> getAliases() { return MCoreConf.get().aliasesOuterMCore; } };
@@ -189,7 +194,18 @@ public class MCore extends MPlugin
 		
 		try
 		{
-			// whatever you fee like
+			// whatever you feel like
+			for (int i = 0; i <= 1; i++)
+			{
+				Map<String, UUID> map = PlayerUtil.getPlayerIds(MUtil.list("Cayorion", "MonMarty", "Thortuna", "yendor46", "Gethelp", "Th3_Drunk_Monk", "Ryciera", "Jamescl", "spectec", "Tom1804", "imboring56", "BigBellyBuddah", "MrHappyTinkles", "BabaManga", "_Omnomivore_", "Cielian", "BboyMVB", "MrWackeo", "Kellock93", "Feykronos", "Unluvable", "DanyWood", "jadex224", "MinecraftSpartan", "ravenwolfthorn", "ELtongo", "Azas", "TazeHD", "BillyA835", "duhsigil", "Sahrotaar", "Alj23"));
+				for (Entry<String, UUID> entry : map.entrySet())
+				{
+					String playerName = entry.getKey();
+					UUID playerId = entry.getValue();
+					log(Txt.parse("<k>%s <v>%s", playerName, playerId.toString()));
+				}
+				log("===========================");
+			}
 		}
 		catch (Exception e)
 		{

src/com/massivecraft/mcore/MCoreMPlayer.java

@@ -0,0 +1,49 @@
+package com.massivecraft.mcore;
+
+import com.massivecraft.mcore.store.Entity;
+
+public class MCoreMPlayer extends Entity<MCoreMPlayer>
+{
+	// -------------------------------------------- //
+	// META
+	// -------------------------------------------- //
+	
+	public static MCoreMPlayer get(Object oid)
+	{
+		return MCoreMPlayerColl.get().get(oid);
+	}
+
+	public static MCoreMPlayer get(Object oid, boolean creative)
+	{
+		return MCoreMPlayerColl.get().get(oid, creative);
+	}
+	
+	// -------------------------------------------- //
+	// OVERRIDE
+	// -------------------------------------------- //
+	
+	@Override
+	public MCoreMPlayer load(MCoreMPlayer that)
+	{
+		this.name = that.name;
+		
+		return this;
+	}
+	
+	@Override
+	public boolean isDefault()
+	{
+		if (this.name != null) return false;
+		
+		return true;
+	}
+	
+	// -------------------------------------------- //
+	// FIELDS
+	// -------------------------------------------- //
+	
+	private String name = null;
+	public String getName() { return this.name; }
+	public void setName(String name) { this.name = name; this.changed(); }
+	
+}

src/com/massivecraft/mcore/MCoreMPlayerColl.java

@@ -0,0 +1,74 @@
+package com.massivecraft.mcore;
+
+import java.util.UUID;
+
+import org.bukkit.entity.Player;
+
+import com.massivecraft.mcore.store.Coll;
+import com.massivecraft.mcore.store.MStore;
+import com.massivecraft.mcore.util.MUtil;
+
+public class MCoreMPlayerColl extends Coll<MCoreMPlayer>
+{
+	// -------------------------------------------- //
+	// INSTANCE & CONSTRUCT
+	// -------------------------------------------- //
+	
+	private static MCoreMPlayerColl i = new MCoreMPlayerColl();
+	public static MCoreMPlayerColl get() { return i; }
+	public MCoreMPlayerColl()
+	{
+		super("mcore_mplayer", MCoreMPlayer.class, MStore.getDb(), MCore.get(), false, false, true);
+	}
+
+	// -------------------------------------------- //
+	// OVERRIDE
+	// -------------------------------------------- //
+	
+	@Override
+	public String fixId(Object oid)
+	{
+		if (oid == null) return null;
+		
+		if (oid instanceof MCoreMPlayer)
+		{
+			return this.entity2id.get(oid);
+		}
+		
+		if (oid instanceof String)
+		{
+			String string = (String)oid;
+			string = string.toLowerCase();
+			
+			// Handle Player Name
+			if (MUtil.isValidPlayerName(string))
+			{
+				// TODO: Improve the speed of this using an index!
+				for (MCoreMPlayer mplayer : this.getAll())
+				{
+					String name = mplayer.getName();
+					if (name == null) continue;
+					if (!string.equals(name.toLowerCase())) continue;
+					return mplayer.getId();
+				}
+			}
+				
+			return string;
+		}
+		
+		if (oid instanceof UUID)
+		{
+			UUID uuid = (UUID)oid;
+			return uuid.toString();
+		}
+		
+		if (oid instanceof Player)
+		{
+			Player player = (Player)oid;
+			return player.getUniqueId().toString();
+		}
+			
+		return null;
+	}
+	
+}

src/com/massivecraft/mcore/util/PlayerUtil.java

@@ -1,8 +1,16 @@
 package com.massivecraft.mcore.util;
 
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
 import java.util.HashMap;
+import java.util.Iterator;
+import java.util.List;
 import java.util.Map;
+import java.util.Map.Entry;
 import java.util.Set;
+import java.util.TreeMap;
+import java.util.UUID;
 import java.util.concurrent.ConcurrentSkipListSet;
 
 import net.minecraft.server.v1_7_R2.EntityPlayer;
@@ -19,6 +27,7 @@ import org.bukkit.event.player.PlayerJoinEvent;
 import org.bukkit.event.player.PlayerQuitEvent;
 
 import com.massivecraft.mcore.MCore;
+import com.massivecraft.mcore.MCoreMPlayer;
 
 public class PlayerUtil implements Listener
 {
@@ -138,4 +147,223 @@ public class PlayerUtil implements Listener
 		eplayer.playerConnection.sendPacket(new PacketPlayOutUpdateHealth(cplayer.getScaledHealth(), eplayer.getFoodData().a(), eplayer.getFoodData().e()));
 	}
 	
+	// -------------------------------------------- //
+	// PLAYER ID <---> PLAYER NAME
+	// -------------------------------------------- //
+	
+	public static String getPlayerName(final UUID playerId, final boolean usingCache, final boolean usingMojangApi)
+	{
+		List<UUID> playerIds = Collections.singletonList(playerId);
+		Map<UUID, String> map = getPlayerNames(playerIds, usingCache, usingMojangApi);
+		return map.get(playerId);
+	}
+	public static String getPlayerName(final UUID playerId, final boolean usingCache)
+	{
+		return getPlayerName(playerId, usingCache, true);
+	}
+	public static String getPlayerName(final UUID playerId)
+	{
+		return getPlayerName(playerId, true);
+	}
+	
+	public static UUID getPlayerId(final String playerName, final boolean usingCache, final boolean usingMojangApi)
+	{
+		List<String> playerNames = Collections.singletonList(playerName);
+		Map<String, UUID> map = getPlayerIds(playerNames, usingCache, usingMojangApi);
+		return map.get(playerName);
+	}
+	public static UUID getPlayerId(final String playerName, final boolean usingCache)
+	{
+		return getPlayerId(playerName, usingCache, true);
+	}
+	public static UUID getPlayerId(final String playerName)
+	{
+		return getPlayerId(playerName, true);
+	}
+	
+	// I suggest using ...
+	// final Map<String, UUID> ret = new TreeMap<String, UUID>(String.CASE_INSENSITIVE_ORDER);
+	// ... since you achieve case insensitivity that way.
+	public static Map<String, UUID> getPlayerIds(Collection<String> playerNames, final boolean usingCache, final boolean usingMojangApi, final boolean synchronous, final Runnable onComplete, Map<String, UUID> ret)
+	{
+		// Finalize Args
+		// To run the Async task we need final versions of all arguments. 
+		// We shallow copy the array for the sake of concurrency and that we will want to remove those we could handle from cache in order to avoid contacting the mojang api in vain.
+		// We need a return value map. Create one if null. Here we do however not shallow copy. We aim to edit the supplied map instance so that it can be used inside the onComplete Runnable.
+		final List<String> playerNamesFinal = new ArrayList<String>(playerNames);
+		final Map<String, UUID> retFinal = (ret != null ? ret : new TreeMap<String, UUID>(String.CASE_INSENSITIVE_ORDER));
+		
+		// Handle Async
+		// Just run sync from another thread.
+		if (!synchronous)
+		{
+			Bukkit.getScheduler().runTaskAsynchronously(MCore.get(), new Runnable()
+			{
+				@Override
+				public void run()
+				{
+					PlayerUtil.getPlayerIds(playerNamesFinal, usingCache, usingMojangApi, true, onComplete, retFinal);
+				}
+			});
+			return retFinal;
+		}
+		
+		// Handle Cache
+		if (usingCache)
+		{
+			Iterator<String> iter = playerNamesFinal.iterator();
+			while (iter.hasNext())
+			{
+				String playerName = iter.next();
+				MCoreMPlayer mplayer = MCoreMPlayer.get(playerName);
+				if (mplayer == null) continue;
+				retFinal.put(mplayer.getName(), UUID.fromString(mplayer.getId()));
+				iter.remove();
+			}	
+		}
+		
+		// Handle Mojang Api
+		if (usingMojangApi && playerNamesFinal.size() > 0)
+		{
+			try
+			{
+				Map<String, UUID> mojangApiResult = MojangApiUtil.getPlayerIds(playerNamesFinal);
+				// Add to the cache
+				for (Entry<String, UUID> entry : mojangApiResult.entrySet())
+				{
+					String name = entry.getKey();
+					UUID id = entry.getValue();
+					MCoreMPlayer mplayer = MCoreMPlayer.get(id, true);
+					mplayer.setName(name);
+				}
+				// Add to the return value
+				retFinal.putAll(mojangApiResult);
+			}
+			catch (Exception e)
+			{
+				e.printStackTrace();
+			}
+		}
+		
+		// Run the onComplete task.
+		if (onComplete != null)
+		{
+			onComplete.run();
+		}
+		
+		// Return
+		return retFinal;
+	}
+	public static Map<String, UUID> getPlayerIds(Collection<String> playerNames, final boolean usingCache, final boolean usingMojangApi, final boolean synchronous, final Runnable onComplete)
+	{
+		return getPlayerIds(playerNames, usingCache, usingMojangApi, synchronous, onComplete, null);
+	}
+	public static Map<String, UUID> getPlayerIds(Collection<String> playerNames, final boolean usingCache, final boolean usingMojangApi, final boolean synchronous)
+	{
+		return getPlayerIds(playerNames, usingCache, usingMojangApi, synchronous, null);
+	}
+	public static Map<String, UUID> getPlayerIds(Collection<String> playerNames, final boolean usingCache, final boolean usingMojangApi)
+	{
+		return getPlayerIds(playerNames, usingCache, usingMojangApi, true);
+	}
+	public static Map<String, UUID> getPlayerIds(Collection<String> playerNames, final boolean usingCache)
+	{
+		return getPlayerIds(playerNames, usingCache, true);
+	}
+	public static Map<String, UUID> getPlayerIds(Collection<String> playerNames)
+	{
+		return getPlayerIds(playerNames, true);
+	}
+	
+	public static Map<UUID, String> getPlayerNames(Collection<UUID> playerIds, final boolean usingCache, final boolean usingMojangApi, final boolean synchronous, final Runnable onComplete, Map<UUID, String> ret)
+	{
+		// Finalize Args
+		// To run the Async task we need final versions of all arguments. 
+		// We shallow copy the array for the sake of concurrency and that we will want to remove those we could handle from cache in order to avoid contacting the mojang api in vain.
+		// We need a return value map. Create one if null. Here we do however not shallow copy. We aim to edit the supplied map instance so that it can be used inside the onComplete Runnable.
+		final List<UUID> playerIdsFinal = new ArrayList<UUID>(playerIds);
+		final Map<UUID, String> retFinal = (ret != null ? ret : new HashMap<UUID, String>());
+		
+		// Handle Async
+		// Just run sync from another thread.
+		if (!synchronous)
+		{
+			Bukkit.getScheduler().runTaskAsynchronously(MCore.get(), new Runnable()
+			{
+				@Override
+				public void run()
+				{
+					PlayerUtil.getPlayerNames(playerIdsFinal, usingCache, usingMojangApi, true, onComplete, retFinal);
+				}
+			});
+			return retFinal;
+		}
+		
+		// Handle Cache
+		if (usingCache)
+		{
+			Iterator<UUID> iter = playerIdsFinal.iterator();
+			while (iter.hasNext())
+			{
+				UUID playerId = iter.next();
+				MCoreMPlayer mplayer = MCoreMPlayer.get(playerId);
+				if (mplayer == null) continue;
+				retFinal.put(playerId, mplayer.getName());
+				iter.remove();
+			}	
+		}
+		
+		// Handle Mojang Api
+		if (usingMojangApi && playerIdsFinal.size() > 0)
+		{
+			try
+			{
+				Map<UUID, String> mojangApiResult = MojangApiUtil.getPlayerNames(playerIdsFinal);
+				// Add to the cache
+				for (Entry<UUID, String> entry : mojangApiResult.entrySet())
+				{
+					UUID id = entry.getKey();
+					String name = entry.getValue();
+					MCoreMPlayer mplayer = MCoreMPlayer.get(id, true);
+					mplayer.setName(name);
+				}
+				// Add to the return value
+				retFinal.putAll(mojangApiResult);
+			}
+			catch (Exception e)
+			{
+				e.printStackTrace();
+			}
+		}
+		
+		// Run the onComplete task.
+		if (onComplete != null)
+		{
+			onComplete.run();
+		}
+		
+		// Return
+		return retFinal;
+	}
+	public static Map<UUID, String> getPlayerNames(Collection<UUID> playerIds, final boolean usingCache, final boolean usingMojangApi, final boolean synchronous, final Runnable onComplete)
+	{
+		return getPlayerNames(playerIds, usingCache, usingMojangApi, synchronous, onComplete, null);
+	}
+	public static Map<UUID, String> getPlayerNames(Collection<UUID> playerIds, final boolean usingCache, final boolean usingMojangApi, final boolean synchronous)
+	{
+		return getPlayerNames(playerIds, usingCache, usingMojangApi, synchronous, null);
+	}
+	public static Map<UUID, String> getPlayerNames(Collection<UUID> playerIds, final boolean usingCache, final boolean usingMojangApi)
+	{
+		return getPlayerNames(playerIds, usingCache, usingMojangApi, true);
+	}
+	public static Map<UUID, String> getPlayerNames(Collection<UUID> playerIds, final boolean usingCache)
+	{
+		return getPlayerNames(playerIds, usingCache, true);
+	}
+	public static Map<UUID, String> getPlayerNames(Collection<UUID> playerIds)
+	{
+		return getPlayerNames(playerIds, true);
+	}
+	
 }