MassiveCore - Lazy Active by Reflection. Solves unwanted early instance creation.

src/com/massivecraft/massivecore/Active.java

@@ -2,10 +2,17 @@ package com.massivecraft.massivecore;
 
 public interface Active
 {
+	// Boolean
 	public boolean isActive();
 	public void setActive(boolean active);
 	
+	// Plugin
 	public MassivePlugin setActivePlugin(MassivePlugin plugin);
 	public MassivePlugin getActivePlugin();
 	
+	// Combined Setter
+	// Plugin is set first.
+	// Boolean by null state.
+	public void setActive(MassivePlugin plugin);
+	
 }

src/com/massivecraft/massivecore/Engine.java

@@ -74,9 +74,9 @@ public abstract class Engine implements Active, Listener, Runnable
 	}
 	
 	@Override
-	public MassivePlugin setActivePlugin(MassivePlugin activePlugin)
+	public MassivePlugin setActivePlugin(MassivePlugin plugin)
 	{
-		this.setPluginSoft(activePlugin);
+		this.setPluginSoft(plugin);
 		return null;
 	}
 	
@@ -86,6 +86,13 @@ public abstract class Engine implements Active, Listener, Runnable
 		return this.getPlugin();
 	}
 	
+	@Override
+	public void setActive(MassivePlugin plugin)
+	{
+		this.setActivePlugin(plugin);
+		this.setActive(plugin != null);
+	}
+	
 	// -------------------------------------------- //
 	// ACTIVE > EVENTS
 	// -------------------------------------------- //

src/com/massivecraft/massivecore/MassiveCore.java

@@ -205,62 +205,59 @@ public class MassiveCore extends MassivePlugin
 		// Activate
 		this.activate(
 			// Coll
-			MultiverseColl.get(),
+			MultiverseColl.class,
-			AspectColl.get(),
+			AspectColl.class,
-			MassiveCoreMConfColl.get(),
+			MassiveCoreMConfColl.class,
-			MassiveCoreMSponsorInfoColl.get(),
+			MassiveCoreMSponsorInfoColl.class,
 		
 			// Engine
-			EngineMassiveCoreChestGui.get(),
+			EngineMassiveCoreChestGui.class,
-			EngineMassiveCoreCollTick.get(),
+			EngineMassiveCoreCollTick.class,
-			EngineMassiveCoreCommandRegistration.get(),
+			EngineMassiveCoreCommandRegistration.class,
-			EngineMassiveCoreDatabase.get(),
+			EngineMassiveCoreDatabase.class,
-			EngineMassiveCoreDestination.get(),
+			EngineMassiveCoreDestination.class,
-			EngineMassiveCoreGank.get(),
+			EngineMassiveCoreGank.class,
-			EngineMassiveCoreMain.get(),
+			EngineMassiveCoreMain.class,
-			EngineMassiveCorePlayerLeave.get(),
+			EngineMassiveCorePlayerLeave.class,
-			EngineMassiveCorePlayerState.get(),
+			EngineMassiveCorePlayerState.class,
-			EngineMassiveCorePlayerUpdate.get(),
+			EngineMassiveCorePlayerUpdate.class,
-			EngineMassiveCoreScheduledTeleport.get(),
+			EngineMassiveCoreScheduledTeleport.class,
-			EngineMassiveCoreTeleportMixinCause.get(),
+			EngineMassiveCoreTeleportMixinCause.class,
-			EngineMassiveCoreVariable.get(),
+			EngineMassiveCoreVariable.class,
-			EngineMassiveCoreWorldNameSet.get(),
+			EngineMassiveCoreWorldNameSet.class,
-			EngineMassiveCoreSponsor.get(),
+			EngineMassiveCoreSponsor.class,
 			
 			// Util
-			PlayerUtil.get(),
+			PlayerUtil.class,
 			
 			// Integration
-			IntegrationVault.get()
+			IntegrationVault.class,
-		);
 			
-		// NOTE: Some commands rely on the MConf being loaded at construction.
-		this.activate(
 			// Command
-			CmdMassiveCore.get(),
+			CmdMassiveCore.class,
-			CmdMassiveCoreUsys.get(),
+			CmdMassiveCoreUsys.class,
-			CmdMassiveCoreStore.get(),
+			CmdMassiveCoreStore.class,
-			CmdMassiveCoreBuffer.get(),
+			CmdMassiveCoreBuffer.class,
-			CmdMassiveCoreCmdurl.get(),
+			CmdMassiveCoreCmdurl.class,
-			CmdMassiveCoreClick.get(),
+			CmdMassiveCoreClick.class,
 			
 			// Mixin
-			MixinEvent.get(), // NOTE: Should be first
+			MixinEvent.class, // NOTE: Should be first
-			MixinActionbar.get(),
+			MixinActionbar.class,
-			MixinActual.get(),
+			MixinActual.class,
-			MixinCommand.get(),
+			MixinCommand.class,
-			MixinDisplayName.get(),
+			MixinDisplayName.class,
-			MixinGamemode.get(),
+			MixinGamemode.class,
-			MixinInventory.get(),
+			MixinInventory.class,
-			MixinKick.get(),
+			MixinKick.class,
-			MixinMessage.get(),
+			MixinMessage.class,
-			MixinModification.get(),
+			MixinModification.class,
-			MixinPlayed.get(),
+			MixinPlayed.class,
-			MixinSenderPs.get(),
+			MixinSenderPs.class,
-			MixinTeleport.get(),
+			MixinTeleport.class,
-			MixinTitle.get(),
+			MixinTitle.class,
-			MixinVisibility.get(),
+			MixinVisibility.class,
-			MixinWorld.get()
+			MixinWorld.class
 		);
 		
 		// Start the examine threads

src/com/massivecraft/massivecore/MassivePlugin.java

@@ -12,6 +12,7 @@ import org.bukkit.plugin.java.JavaPlugin;
 
 import com.massivecraft.massivecore.command.MassiveCommand;
 import com.massivecraft.massivecore.store.Coll;
+import com.massivecraft.massivecore.util.ReflectionUtil;
 import com.massivecraft.massivecore.util.Txt;
 import com.massivecraft.massivecore.xlib.gson.Gson;
 import com.massivecraft.massivecore.xlib.gson.GsonBuilder;
@@ -170,15 +171,37 @@ public abstract class MassivePlugin extends JavaPlugin implements Listener, Name
 		Bukkit.getPluginManager().disablePlugin(this);
 	}
 	
-	public void activate(Active... actives)
+	public void activate(Object... objects)
 	{
-		for (Active active : actives)
+		for (Object object : objects)
 		{
-			active.setActivePlugin(this);
+			Active active = asActive(object);
-			active.setActive(true);
+			active.setActive(this);
 		}
 	}
 	
+	private static Active asActive(Object object)
+	{
+		if (object instanceof Active)
+		{
+			return (Active)object;
+		}
+		
+		if (object instanceof Class<?>)
+		{
+			Class<?> clazz = (Class<?>)object;
+			if ( ! Active.class.isAssignableFrom(clazz)) throw new IllegalArgumentException("Not Active Class: " + (clazz == null ? "NULL" : clazz));
+			
+			Object instance = ReflectionUtil.getSingletonInstance(clazz);
+			if ( ! (instance instanceof Active)) throw new IllegalArgumentException("Not Active Instance: " + (instance == null ? "NULL" : instance) + " for object: " + (object == null ? "NULL" : object));
+			
+			Active active = (Active)instance;
+			return active;
+		}
+		
+		throw new IllegalArgumentException("Neither Active nor Class: " + object);
+	}
+	
 	// -------------------------------------------- //
 	// LOGGING
 	// -------------------------------------------- //

src/com/massivecraft/massivecore/command/MassiveCommand.java

@@ -85,6 +85,7 @@ public class MassiveCommand implements Active, PluginIdentifiableCommand
 		// NOTE: Not Implemented
 	}
 	
+	@Override
 	public MassivePlugin setActivePlugin(MassivePlugin activePlugin)
 	{
 		if (activePlugin == null)
@@ -97,11 +98,19 @@ public class MassiveCommand implements Active, PluginIdentifiableCommand
 		}
 	}
 	
+	@Override
 	public MassivePlugin getActivePlugin()
 	{
 		return registry.get(this);
 	}
 	
+	@Override
+	public void setActive(MassivePlugin plugin)
+	{
+		this.setActivePlugin(plugin);
+		this.setActive(plugin != null);
+	}
+	
 	// -------------------------------------------- //
 	// PLUGIN IDENTIFIABLE COMMAND
 	// -------------------------------------------- //

src/com/massivecraft/massivecore/store/Coll.java

@@ -1034,6 +1034,12 @@ public class Coll<E extends Entity<E>> extends CollAbstract<E>
 		return name2instance.containsKey(this.getName());
 	}
 	
+	@Override
+	public void setActive(MassivePlugin plugin)
+	{
+		this.setActivePlugin(plugin);
+		this.setActive(plugin != null);
+	}
 	
 	// -------------------------------------------- //
 	// NAME UTILITIES

src/com/massivecraft/massivecore/store/Colls.java

@@ -73,6 +73,13 @@ public abstract class Colls<C extends Coll<E>, E extends Entity<E>> implements A
 		return this.plugin;
 	}
 	
+	@Override
+	public void setActive(MassivePlugin plugin)
+	{
+		this.setActivePlugin(plugin);
+		this.setActive(plugin != null);
+	}
+	
 	// -------------------------------------------- //
 	// UTIL
 	// -------------------------------------------- //

src/com/massivecraft/massivecore/util/ReflectionUtil.java

@@ -122,6 +122,19 @@ public class ReflectionUtil
 		return (T) invokeMethod(method, target, EMPTY_ARRAY_OF_OBJECT);
 	}
 	
+	// -------------------------------------------- //
+	// SINGLETON INSTANCE
+	// -------------------------------------------- //
+	
+	public static <T> T getSingletonInstance(Class<T> clazz)
+	{
+		Method get = getMethod(clazz, "get");
+		T ret = invokeMethod(get, null);
+		if (ret == null) throw new NullPointerException("Singleton instance was null for: " + clazz);
+		if ( ! clazz.isAssignableFrom(ret.getClass())) throw new IllegalStateException("Singleton instance was not of same or subclass for: " + clazz);
+		return ret;
+	}
+	
 	// -------------------------------------------- //
 	// FIELD > GET
 	// -------------------------------------------- //