package foundation.server;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

public class InitializerContainer implements Iterable<Initializer>{

	private static InitializerContainer instance;
	private List<Initializer> itemList;
	
	
	public synchronized static InitializerContainer getInstance() {
		if (instance == null) {
			instance = new InitializerContainer();
		}
		
		return instance;
	}
	
	public InitializerContainer() {
		itemList = new ArrayList<Initializer>();
	}

	@Override
	public Iterator<Initializer> iterator() {
		return itemList.iterator();
	}

	public void add(Initializer configLoader) {
		itemList.add(configLoader);
	}
	
	public Initializer get(Class<?> clazz) {
		for (Initializer loader: itemList) {
			if (loader.getClass().isAssignableFrom(clazz)) {
				return loader;
			}
		}
		
		return null;
	}

}