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.tools.xjc.model;
38:
39: import java.util.Set;
40: import java.util.Map;
41: import java.util.HashMap;
42: import java.util.HashSet;
43:
44: import com.sun.tools.xjc.api.ClassNameAllocator;
45:
46: /**
47: * {@link ClassNameAllocator} filter that performs automatic name conflict resolution.
48: *
49: * @author Kohsuke Kawaguchi
50: */
51: public class AutoClassNameAllocator implements ClassNameAllocator {
52: private final ClassNameAllocator core;
53:
54: private final Map<String, Set<String>> names = new HashMap<String, Set<String>>();
55:
56: public AutoClassNameAllocator(ClassNameAllocator core) {
57: this .core = core;
58: }
59:
60: public String assignClassName(String packageName, String className) {
61: className = determineName(packageName, className);
62: if (core != null)
63: className = core.assignClassName(packageName, className);
64: return className;
65: }
66:
67: private String determineName(String packageName, String className) {
68: Set<String> s = names.get(packageName);
69: if (s == null) {
70: s = new HashSet<String>();
71: names.put(packageName, s);
72: }
73:
74: if (s.add(className))
75: return className;
76:
77: for (int i = 2; true; i++) {
78: if (s.add(className + i))
79: return className + i;
80: }
81: }
82: }
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