1 //
2 // ========================================================================
3 // Copyright (c) 1995-2013 Mort Bay Consulting Pty. Ltd.
4 // ------------------------------------------------------------------------
5 // All rights reserved. This program and the accompanying materials
6 // are made available under the terms of the Eclipse Public License v1.0
7 // and Apache License v2.0 which accompanies this distribution.
8 //
9 // The Eclipse Public License is available at
10 // http://www.eclipse.org/legal/epl-v10.html
11 //
12 // The Apache License v2.0 is available at
13 // http://www.opensource.org/licenses/apache2.0.php
14 //
15 // You may elect to redistribute this code under either of these licenses.
16 // ========================================================================
17 //
18
19 package org.eclipse.jetty.annotations;
20
21 import java.util.List;
22
23 import org.eclipse.jetty.annotations.AnnotationParser.ClassHandler;
24 import org.eclipse.jetty.util.MultiMap;
25 import org.eclipse.jetty.util.log.Log;
26 import org.eclipse.jetty.util.log.Logger;
27
28 /**
29 * ClassInheritanceHandler
30 *
31 * As asm scans for classes, remember the type hierarchy.
32 */
33 public class ClassInheritanceHandler implements ClassHandler
34 {
35 private static final Logger LOG = Log.getLogger(ClassInheritanceHandler.class);
36
37
38 MultiMap _inheritanceMap = new MultiMap();
39
40 public ClassInheritanceHandler()
41 {
42 }
43
44 public void handle(String className, int version, int access, String signature, String superName, String[] interfaces)
45 {
46 try
47 {
48 for (int i=0; interfaces != null && i<interfaces.length;i++)
49 {
50 _inheritanceMap.add (interfaces[i], className);
51 }
52 //To save memory, we don't record classes that only extend Object, as that can be assumed
53 if (!"java.lang.Object".equals(superName))
54 _inheritanceMap.add(superName, className);
55 }
56 catch (Exception e)
57 {
58 LOG.warn(e);
59 }
60 }
61
62 public List getClassNamesExtendingOrImplementing (String className)
63 {
64 return _inheritanceMap.getValues(className);
65 }
66
67 public MultiMap getMap ()
68 {
69 return _inheritanceMap;
70 }
71 }