Thu, 31 Aug 2017 15:18:52 +0800
merge
aoqi@0 | 1 | /* |
aoqi@0 | 2 | * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved. |
aoqi@0 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
aoqi@0 | 4 | * |
aoqi@0 | 5 | * This code is free software; you can redistribute it and/or modify it |
aoqi@0 | 6 | * under the terms of the GNU General Public License version 2 only, as |
aoqi@0 | 7 | * published by the Free Software Foundation. Oracle designates this |
aoqi@0 | 8 | * particular file as subject to the "Classpath" exception as provided |
aoqi@0 | 9 | * by Oracle in the LICENSE file that accompanied this code. |
aoqi@0 | 10 | * |
aoqi@0 | 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
aoqi@0 | 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
aoqi@0 | 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
aoqi@0 | 14 | * version 2 for more details (a copy is included in the LICENSE file that |
aoqi@0 | 15 | * accompanied this code). |
aoqi@0 | 16 | * |
aoqi@0 | 17 | * You should have received a copy of the GNU General Public License version |
aoqi@0 | 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
aoqi@0 | 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
aoqi@0 | 20 | * |
aoqi@0 | 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
aoqi@0 | 22 | * or visit www.oracle.com if you need additional information or have any |
aoqi@0 | 23 | * questions. |
aoqi@0 | 24 | */ |
aoqi@0 | 25 | |
aoqi@0 | 26 | package com.sun.xml.internal.bind.v2.schemagen; |
aoqi@0 | 27 | |
aoqi@0 | 28 | import java.util.TreeMap; |
aoqi@0 | 29 | import java.util.Map; |
aoqi@0 | 30 | |
aoqi@0 | 31 | /** |
aoqi@0 | 32 | * A special {@link Map} that 'conceptually' stores a set of values for each key. |
aoqi@0 | 33 | * |
aoqi@0 | 34 | * <p> |
aoqi@0 | 35 | * When multiple values are stored, however, this class doesn't let the caller |
aoqi@0 | 36 | * see individual values, and instead it returns a specially designated "MANY" value, |
aoqi@0 | 37 | * which is given as a parameter to the constructor. |
aoqi@0 | 38 | * |
aoqi@0 | 39 | * @author Kohsuke Kawaguchi |
aoqi@0 | 40 | */ |
aoqi@0 | 41 | final class MultiMap<K extends Comparable<K>,V> extends TreeMap<K,V> { |
aoqi@0 | 42 | private final V many; |
aoqi@0 | 43 | |
aoqi@0 | 44 | public MultiMap(V many) { |
aoqi@0 | 45 | this.many = many; |
aoqi@0 | 46 | } |
aoqi@0 | 47 | |
aoqi@0 | 48 | @Override |
aoqi@0 | 49 | public V put(K key, V value) { |
aoqi@0 | 50 | V old = super.put(key, value); |
aoqi@0 | 51 | if(old!=null && !old.equals(value)) { |
aoqi@0 | 52 | // different value stored |
aoqi@0 | 53 | super.put(key,many); |
aoqi@0 | 54 | } |
aoqi@0 | 55 | return old; |
aoqi@0 | 56 | } |
aoqi@0 | 57 | |
aoqi@0 | 58 | @Override |
aoqi@0 | 59 | public void putAll(Map<? extends K, ? extends V> map) { |
aoqi@0 | 60 | throw new UnsupportedOperationException(); |
aoqi@0 | 61 | } |
aoqi@0 | 62 | } |