1 //
2 // ========================================================================
3 // Copyright (c) 1995-2013 Mort Bay Consulting Pty. Ltd.
4 // ------------------------------------------------------------------------
5 // All rights reserved. This program and the accompanying materials
6 // are made available under the terms of the Eclipse Public License v1.0
7 // and Apache License v2.0 which accompanies this distribution.
8 //
9 // The Eclipse Public License is available at
10 // http://www.eclipse.org/legal/epl-v10.html
11 //
12 // The Apache License v2.0 is available at
13 // http://www.opensource.org/licenses/apache2.0.php
14 //
15 // You may elect to redistribute this code under either of these licenses.
16 // ========================================================================
17 //
18
19 package org.eclipse.jetty.jndi.java;
20
21 import java.util.Hashtable;
22
23 import javax.naming.Context;
24 import javax.naming.Name;
25 import javax.naming.NamingException;
26 import javax.naming.spi.ObjectFactory;
27
28 import org.eclipse.jetty.util.log.Log;
29 import org.eclipse.jetty.util.log.Logger;
30
31
32 /** javaURLContextFactory
33 * <p>This is the URL context factory for the java: URL.
34 *
35 * <p><h4>Notes</h4>
36 * <p>
37 *
38 * <p><h4>Usage</h4>
39 * <pre>
40 */
41 public class javaURLContextFactory implements ObjectFactory
42 {
43 private static final Logger LOG = Log.getLogger(javaURLContextFactory.class);
44
45 /**
46 * Either return a new context or the resolution of a url.
47 *
48 * @param url an <code>Object</code> value
49 * @param name a <code>Name</code> value
50 * @param ctx a <code>Context</code> value
51 * @param env a <code>Hashtable</code> value
52 * @return a new context or the resolved object for the url
53 * @exception Exception if an error occurs
54 */
55 public Object getObjectInstance(Object url, Name name, Context ctx, Hashtable env)
56 throws Exception
57 {
58 // null object means return a root context for doing resolutions
59 if (url == null)
60 {
61 if(LOG.isDebugEnabled())LOG.debug(">>> new root context requested ");
62 return new javaRootURLContext(env);
63 }
64
65 // return the resolution of the url
66 if (url instanceof String)
67 {
68 if(LOG.isDebugEnabled())LOG.debug(">>> resolution of url "+url+" requested");
69 Context rootctx = new javaRootURLContext (env);
70 return rootctx.lookup ((String)url);
71 }
72
73 // return the resolution of at least one of the urls
74 if (url instanceof String[])
75 {
76 if(LOG.isDebugEnabled())LOG.debug(">>> resolution of array of urls requested");
77 String[] urls = (String[])url;
78 Context rootctx = new javaRootURLContext (env);
79 Object object = null;
80 NamingException e = null;
81 for (int i=0;(i< urls.length) && (object == null); i++)
82 {
83 try
84 {
85 object = rootctx.lookup (urls[i]);
86 }
87 catch (NamingException x)
88 {
89 e = x;
90 }
91 }
92
93 if (object == null)
94 throw e;
95 else
96 return object;
97 }
98
99 if(LOG.isDebugEnabled())LOG.debug(">>> No idea what to do, so return a new root context anyway");
100 return new javaRootURLContext (env);
101 }
102 };