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				-package com.gmail.nossr50.runnables.database; 
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				- 
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				-import java.lang.ref.WeakReference; 
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				- 
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				-import org.bukkit.scheduler.BukkitRunnable; 
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				- 
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				-import com.gmail.nossr50.database.SQLDatabaseManager; 
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				- 
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				-/** 
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				- * This task is in charge of sending a MySQL ping over the MySQL connection 
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				- * every hour to prevent the connection from timing out and losing players' 
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				- * data when they join. 
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				- * <p/> 
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				- * A WeakReference is used to keep the database instance, because 
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				- * {@link com.gmail.nossr50.commands.database.ConvertDatabaseCommand database 
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				- * conversion} may create a SQLDatabaseManager that will be thrown out. If a 
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				- * normal reference was used, the conversion would cause a combined data and 
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				- * resource leak through this task. 
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				- */ 
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				-public class SQLDatabaseKeepaliveTask extends BukkitRunnable { 
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				-    WeakReference<SQLDatabaseManager> databaseInstance; 
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				- 
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				-    public SQLDatabaseKeepaliveTask(SQLDatabaseManager dbman) { 
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				-        databaseInstance = new WeakReference<SQLDatabaseManager>(dbman); 
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				-    } 
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				- 
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				-    public void run() { 
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				-        SQLDatabaseManager dbman = databaseInstance.get(); 
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				-        if (dbman != null) { 
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				-            dbman.checkConnected(); 
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				-        } 
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				-        else { 
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				-            // This happens when the database was started for a conversion, 
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				-            // or discarded by its creator for any other reason. If this code 
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				-            // was not present, we would leak the connection resources. 
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				-            this.cancel(); 
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				-        } 
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				-    } 
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				-} 
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