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package edu.mit.simile.babel.util;

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

/**
 * @author matsakis
 * @author dfhuynh
 *
 * A map from keys to a list of objects
 */
public class ListMap extends HashMap {
	private static final long serialVersionUID = 3856407370527187912L;

	public boolean check(Object key, Object value){
		List val = (List) super.get(key);
		if (val == null)
			return false;
		for(int i = 0; i val = (List) super.get(key);
		return (val == null)
			? 0
			: ((List) val).size();
	}

	public Object get(Object key){
		List val = (List) super.get(key);
		return (val == null)
			? null
			: ((List) val).get(0);
	}

	public Object get(Object key, int index){
		List val = (List) super.get(key);
		return (val == null)
			? null
			: ((List) val).get(index);
	}

	public Object put(Object key, Object value){
		List