| /* |
| * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code 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 General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package com.sun.xml.internal.bind.v2.schemagen; |
| |
| import java.util.TreeMap; |
| import java.util.Map; |
| |
| /** |
| * A special {@link Map} that 'conceptually' stores a set of values for each key. |
| * |
| * <p> |
| * When multiple values are stored, however, this class doesn't let the caller |
| * see individual values, and instead it returns a specially designated "MANY" value, |
| * which is given as a parameter to the constructor. |
| * |
| * @author Kohsuke Kawaguchi |
| */ |
| final class MultiMap<K extends Comparable<K>,V> extends TreeMap<K,V> { |
| private final V many; |
| |
| public MultiMap(V many) { |
| this.many = many; |
| } |
| |
| @Override |
| public V put(K key, V value) { |
| V old = super.put(key, value); |
| if(old!=null && !old.equals(value)) { |
| // different value stored |
| super.put(key,many); |
| } |
| return old; |
| } |
| |
| @Override |
| public void putAll(Map<? extends K, ? extends V> map) { |
| throw new UnsupportedOperationException(); |
| } |
| } |