1/*
2 * Copyright (C) 2009 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16package tests.support;
17
18import java.io.File;
19import java.net.URL;
20import java.net.URLClassLoader;
21
22/**
23 * Support class for creating a file-based ClassLoader. Delegates to either
24 * Dalvik's PathClassLoader or the RI's URLClassLoader, but does so by-name.
25 * This allows us to run corresponding tests in both environments.
26 */
27public abstract class Support_ClassLoader {
28
29    public abstract ClassLoader getClassLoader(URL url, ClassLoader parent);
30
31    public static ClassLoader getInstance(URL url, ClassLoader parent) {
32        try {
33            Support_ClassLoader factory;
34
35            String packageName = Support_ClassLoader.class.getPackage().getName();
36            if ("Dalvik".equals(System.getProperty("java.vm.name"))) {
37                factory = (Support_ClassLoader)Class.forName(
38                    packageName + ".Support_ClassLoaderDalvik").newInstance();
39            } else {
40                factory = (Support_ClassLoader)Class.forName(
41                    packageName + ".Support_ClassLoader$RefImpl").newInstance();
42            }
43
44            return factory.getClassLoader(url, parent);
45        } catch (Exception ex) {
46            throw new RuntimeException("Unable to create ClassLoader", ex);
47        }
48    }
49
50    /**
51     * Implementation for the reference implementation. Nothing interesting to
52     * see here. Please get along.
53     */
54    static class RefImpl extends Support_ClassLoader {
55        @Override
56        public ClassLoader getClassLoader(URL url, ClassLoader parent) {
57            return new URLClassLoader(new URL[] { url }, parent);
58        }
59    }
60}
61