1 //
2 // ========================================================================
3 // Copyright (c) 1995-2016 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 /**
33 * javaURLContextFactory
34 * <p>
35 * This is the URL context factory for the <code>java:</code> URL.
36 */
37 public class javaURLContextFactory implements ObjectFactory
38 {
39 private static final Logger LOG = Log.getLogger(javaURLContextFactory.class);
40
41 /**
42 * Either return a new context or the resolution of a url.
43 *
44 * @param url an <code>Object</code> value
45 * @param name a <code>Name</code> value
46 * @param ctx a <code>Context</code> value
47 * @param env a <code>Hashtable</code> value
48 * @return a new context or the resolved object for the url
49 * @exception Exception if an error occurs
50 */
51 public Object getObjectInstance(Object url, Name name, Context ctx, Hashtable env)
52 throws Exception
53 {
54 // null object means return a root context for doing resolutions
55 if (url == null)
56 {
57 if(LOG.isDebugEnabled())LOG.debug(">>> new root context requested ");
58 return new javaRootURLContext(env);
59 }
60
61 // return the resolution of the url
62 if (url instanceof String)
63 {
64 if(LOG.isDebugEnabled())LOG.debug(">>> resolution of url "+url+" requested");
65 Context rootctx = new javaRootURLContext (env);
66 return rootctx.lookup ((String)url);
67 }
68
69 // return the resolution of at least one of the urls
70 if (url instanceof String[])
71 {
72 if(LOG.isDebugEnabled())LOG.debug(">>> resolution of array of urls requested");
73 String[] urls = (String[])url;
74 Context rootctx = new javaRootURLContext (env);
75 Object object = null;
76 NamingException e = null;
77 for (int i=0;(i< urls.length) && (object == null); i++)
78 {
79 try
80 {
81 object = rootctx.lookup (urls[i]);
82 }
83 catch (NamingException x)
84 {
85 e = x;
86 }
87 }
88
89 if (object == null)
90 throw e;
91 else
92 return object;
93 }
94
95 if(LOG.isDebugEnabled())LOG.debug(">>> No idea what to do, so return a new root context anyway");
96 return new javaRootURLContext (env);
97 }
98 };