/*
 * FindBugs - Find Bugs in Java programs
 * Copyright (C) 2003-2007 University of Maryland
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

package edu.umd.cs.findbugs.util;

import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;

/**
 * Simple implementation of a Bag
 * 
 * @author pugh
 */
public class Bag<E> {
	Map<E,Integer> map = new HashMap<E, Integer>();
	public boolean add(E e) {
		Integer v = map.get(e);
		if (v == null) 
			map.put(e, 1);
		else map.put(e, v+1);
		return true;
	}
	public Set<E> keySet() {
		return map.keySet();
	}

	public Collection<Map.Entry<E, Integer>> entrySet() {
		return map.entrySet();
	}
	
	public int getCount(E e) {
			Integer v = map.get(e);
			if (v == null) 
				return 0;
			else return v;
	}

}

@@ -1054,16 +1054,22 @@
 g%3CE%3E %7B%0A%09
+final 
 Map%3CE,In
@@ -1075,16 +1075,41 @@
 nteger%3E 
+map;%0A%09%0A%09public Bag() %7B%0A%09%09
 map = ne
@@ -1133,16 +1133,75 @@
 ger%3E();%0A
+%09%7D%0A%09public Bag(Map%3CE, Integer%3E map) %7B%0A%09 this.map = map;%0A%09%7D%0A
 %09public 
@@ -1319,24 +1319,174 @@
 rn true;%0A%09%7D%0A
+%09public boolean add(E e, int count) %7B%0A%09%09Integer v = map.get(e);%0A%09%09if (v == null) %0A%09%09%09map.put(e, count);%0A%09%09else map.put(e, v+count);%0A%09%09return true;%0A%09%7D%0A
 %09public Set%3C

add additional functionality for Bags