Update03To04.java

package think.rpgitems.config;

import java.util.Iterator;

import org.bukkit.configuration.ConfigurationSection;

import think.rpgitems.Plugin;
import think.rpgitems.item.ItemManager;
import think.rpgitems.item.RPGItem;
import think.rpgitems.power.Power;
import think.rpgitems.power.PowerUnbreakable;
import think.rpgitems.power.PowerUnbreaking;

public class Update03To04 implements Updater {

    @Override
    public void update(ConfigurationSection section) {
        Plugin plugin = Plugin.plugin;
        
        ItemManager.load(plugin);

        for (RPGItem item : ItemManager.itemByName.values()) {
            Iterator<Power> it = item.powers.iterator();
            while(it.hasNext()) {
                Power power = it.next();
                if (power instanceof PowerUnbreakable) {
                    item.setMaxDurability(-1, false);
                    it.remove();
                }
                if (power instanceof PowerUnbreaking) {
                    PowerUnbreaking ub = (PowerUnbreaking) power;
                    item.setMaxDurability((int) ((double)item.getMaxDurability() * (1d + (double)(ub.level) / 2d)));
                    it.remove();
                }
            }
        }
        
        ItemManager.save(plugin);
        ItemManager.itemByName.clear();
        ItemManager.itemById.clear();       
        section.set("version", "0.4"); 
    }

}