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Java > Open Source Codes > org > ungoverned > oscar > FakeURLStreamHandler


1 /*
2  * Oscar - An implementation of the OSGi framework.
3  * Copyright (c) 2004, Richard S. Hall
4  * All rights reserved.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions
8  * are met:
9  *
10  * * Redistributions of source code must retain the above copyright
11  * notice, this list of conditions and the following disclaimer.
12  * * Redistributions in binary form must reproduce the above copyright
13  * notice, this list of conditions and the following disclaimer in
14  * the documentation and/or other materials provided with the
15  * distribution.
16  * * Neither the name of the ungoverned.org nor the names of its
17  * contributors may be used to endorse or promote products derived
18  * from this software without specific prior written permission.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
23  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
24  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
25  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
26  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
30  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31  *
32  * Contact: Richard S. Hall (heavy@ungoverned.org)
33  * Contributor(s):
34  *
35 **/

36 package org.ungoverned.oscar;
37
38 import java.io.IOException JavaDoc;
39 import java.net.URL JavaDoc;
40 import java.net.URLConnection JavaDoc;
41 import java.net.URLStreamHandler JavaDoc;
42
43 /**
44  * This class implements a fake stream handler. This class is necessary in
45  * some cases when assigning <tt>CodeSource</tt>s to classes in
46  * <tt>BundleClassLoader</tt>. In general, the bundle location is an URL
47  * and this URL is used as the code source for the bundle's associated
48  * classes. The OSGi specification does not require that the bundle
49  * location be an URL, though, so in that case we try to generate a
50  * fake URL for the code source of the bundle, which is just the location
51  * string prepended with the "location:" protocol, by default. We need
52  * this fake handler to avoid an unknown protocol exception.
53 **/

54 class FakeURLStreamHandler extends URLStreamHandler JavaDoc
55 {
56     protected URLConnection JavaDoc openConnection(URL JavaDoc url) throws IOException JavaDoc
57     {
58         return null;
59     }
60 }
61
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