1 // ========================================================================
2 // Copyright (c) 2009 Intalio, Inc.
3 // ------------------------------------------------------------------------
4 // All rights reserved. This program and the accompanying materials
5 // are made available under the terms of the Eclipse Public License v1.0
6 // and Apache License v2.0 which accompanies this distribution.
7 // The Eclipse Public License is available at
8 // http://www.eclipse.org/legal/epl-v10.html
9 // The Apache License v2.0 is available at
10 // http://www.opensource.org/licenses/apache2.0.php
11 // You may elect to redistribute this code under either of these licenses.
12 // ========================================================================
13 package org.eclipse.jetty.osgi.boot.utils;
14
15 import org.eclipse.jetty.osgi.boot.utils.internal.DefaultBundleClassLoaderHelper;
16 import org.osgi.framework.Bundle;
17
18 /**
19 * Is there a clean OSGi way to go from the Bundle object to the classloader of
20 * the Bundle ? You can certainly take a class inside the bundle and get the
21 * bundle's classloader that way. Getting the classloader directly from the
22 * bundle would be nice.
23 * <p>
24 * We could use fragments that are specific to each OSGi implementation. Using
25 * introspection here to keep packaging simple and avoid the multiplication of
26 * the jars.
27 * </p>
28 * <p>
29 * The default implementation relies on introspection and supports equinox-3.5
30 * and felix-2.0.0
31 * </p>
32 */
33 public interface BundleClassLoaderHelper
34 {
35
36 /** The name of the custom implementation for this interface in a fragment. */
37 public static final String CLASS_NAME = "org.eclipse.jetty.osgi.boot.utils.BundleClassLoaderHelperImpl";
38
39 /** The default instance supports felix and equinox */
40 public static BundleClassLoaderHelper DEFAULT = new DefaultBundleClassLoaderHelper();
41
42 /**
43 * @return The classloader of a given bundle. Assuming the bundle is
44 * started.
45 */
46 public ClassLoader getBundleClassLoader(Bundle bundle);
47
48 }