1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
|
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.naming.resources;
import java.net.URLStreamHandler;
import java.net.URLStreamHandlerFactory;
import java.util.List;
import java.util.concurrent.CopyOnWriteArrayList;
/**
* Factory for Stream handlers to a JNDI directory context that also supports
* users specifying additional stream handler.
*
* @author <a href="mailto:remm@apache.org">Remy Maucherat</a>
*/
public class DirContextURLStreamHandlerFactory
implements URLStreamHandlerFactory {
// Singleton
private static DirContextURLStreamHandlerFactory instance =
new DirContextURLStreamHandlerFactory();
public static DirContextURLStreamHandlerFactory getInstance() {
return instance;
}
public static void addUserFactory(URLStreamHandlerFactory factory) {
instance.userFactories.add(factory);
}
private List<URLStreamHandlerFactory> userFactories =
new CopyOnWriteArrayList<URLStreamHandlerFactory>();
private DirContextURLStreamHandlerFactory() {
// Hide the default constructor
}
/**
* Creates a new URLStreamHandler instance with the specified protocol.
* Will return null if the protocol is not <code>jndi</code>.
*
* @param protocol the protocol (must be "jndi" here)
* @return a URLStreamHandler for the jndi protocol, or null if the
* protocol is not JNDI
*/
@Override
public URLStreamHandler createURLStreamHandler(String protocol) {
if (protocol.equals("jndi")) {
return new DirContextURLStreamHandler();
} else {
for (URLStreamHandlerFactory factory : userFactories) {
URLStreamHandler handler =
factory.createURLStreamHandler(protocol);
if (handler != null) {
return handler;
}
}
return null;
}
}
}
|
