package frame.object.data;

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

public class ObjectList<T> implements Iterable<T> {

	private List<T> itemList;
	private Map<String, T> itemMap;
	
	public ObjectList() {
		itemList = new ArrayList<T>();
		itemMap = new HashMap<String, T>();
	}
	
	public void add(String id, T object) throws Exception {
		if (id == null) {
			throw new Exception("id is empty");
		}
		
		itemList.add(object);
		itemMap.put(id, object);
	}
	
	public T get(String id) {
		return itemMap.get(id);
	}
	
	public T get(int idx) {
		return itemList.get(idx);
	}
	
	public int size() {
		return itemList.size();
	}

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