KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > org > apache > geronimo > kernel > classloader > AbstractResourceHandle


1 /**
2  * Licensed to the Apache Software Foundation (ASF) under one or more
3  * contributor license agreements. See the NOTICE file distributed with
4  * this work for additional information regarding copyright ownership.
5  * The ASF licenses this file to You under the Apache License, Version 2.0
6  * (the "License"); you may not use this file except in compliance with
7  * the License. You may obtain a copy of the License at
8  *
9  * http://www.apache.org/licenses/LICENSE-2.0
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  */
17 package org.apache.geronimo.kernel.classloader;
18
19 import java.io.IOException JavaDoc;
20 import java.io.InputStream JavaDoc;
21 import java.security.cert.Certificate JavaDoc;
22 import java.util.jar.Attributes JavaDoc;
23 import java.util.jar.Manifest JavaDoc;
24
25 /**
26  * @version $Rev: 476049 $ $Date: 2006-11-16 23:35:17 -0500 (Thu, 16 Nov 2006) $
27  */
28 public abstract class AbstractResourceHandle implements ResourceHandle {
29     public byte[] getBytes() throws IOException JavaDoc {
30         InputStream JavaDoc in = getInputStream();
31         try {
32             byte[] bytes = IoUtil.getBytes(in);
33             return bytes;
34         } finally {
35             IoUtil.close(in);
36         }
37     }
38
39     public Manifest JavaDoc getManifest() throws IOException JavaDoc {
40         return null;
41     }
42
43     public Certificate JavaDoc[] getCertificates() {
44         return null;
45     }
46
47     public Attributes JavaDoc getAttributes() throws IOException JavaDoc {
48         Manifest JavaDoc m = getManifest();
49         if (m == null) {
50             return null;
51         }
52
53         String JavaDoc entry = getUrl().getFile();
54         return m.getAttributes(entry);
55     }
56
57     public void close() {
58     }
59
60     public String JavaDoc toString() {
61         return "[" + getName() + ": " + getUrl() + "; code source: " + getCodeSourceUrl() + "]";
62     }
63 }
64
Popular Tags