01: /*
02: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
03: *
04: * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
05: *
06: * The contents of this file are subject to the terms of either the GNU
07: * General Public License Version 2 only ("GPL") or the Common Development
08: * and Distribution License("CDDL") (collectively, the "License"). You
09: * may not use this file except in compliance with the License. You can obtain
10: * a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
11: * or glassfish/bootstrap/legal/LICENSE.txt. See the License for the specific
12: * language governing permissions and limitations under the License.
13: *
14: * When distributing the software, include this License Header Notice in each
15: * file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
16: * Sun designates this particular file as subject to the "Classpath" exception
17: * as provided by Sun in the GPL Version 2 section of the License file that
18: * accompanied this code. If applicable, add the following below the License
19: * Header, with the fields enclosed by brackets [] replaced by your own
20: * identifying information: "Portions Copyrighted [year]
21: * [name of copyright owner]"
22: *
23: * Contributor(s):
24: *
25: * If you wish your version of this file to be governed by only the CDDL or
26: * only the GPL Version 2, indicate your decision by adding "[Contributor]
27: * elects to include this software in this distribution under the [CDDL or GPL
28: * Version 2] license." If you don't indicate a single choice of license, a
29: * recipient has the option to distribute your version of this file under
30: * either the CDDL, the GPL Version 2 or to extend the choice of license to
31: * its licensees as provided above. However, if you add GPL Version 2 code
32: * and therefore, elected the GPL Version 2 license, then the option applies
33: * only if the new code is made subject to such option by the copyright
34: * holder.
35: */
36:
37: package com.sun.xml.bind.v2.schemagen;
38:
39: import java.util.TreeMap;
40: import java.util.Map;
41:
42: /**
43: * A special {@link Map} that 'conceptually' stores a set of values for each key.
44: *
45: * <p>
46: * When multiple values are stored, however, this class doesn't let the caller
47: * see individual values, and instead it returns a specially designated "MANY" value,
48: * which is given as a parameter to the constructor.
49: *
50: * @author Kohsuke Kawaguchi
51: */
52: final class MultiMap<K extends Comparable<K>, V> extends TreeMap<K, V> {
53: private final V many;
54:
55: public MultiMap(V many) {
56: this .many = many;
57: }
58:
59: @Override
60: public V put(K key, V value) {
61: V old = super .put(key, value);
62: if (old != null && !old.equals(value)) {
63: // different value stored
64: super .put(key, many);
65: }
66: return old;
67: }
68:
69: @Override
70: public void putAll(Map<? extends K, ? extends V> map) {
71: throw new UnsupportedOperationException();
72: }
73: }
|