1 // ========================================================================
2 // Copyright (c) 2006-2009 Mort Bay Consulting Pty. Ltd.
3 // ------------------------------------------------------------------------
4 // All rights reserved. This program and the accompanying materials
5 // are made available under the terms of the Eclipse Public License v1.0
6 // and Apache License v2.0 which accompanies this distribution.
7 // The Eclipse Public License is available at
8 // http://www.eclipse.org/legal/epl-v10.html
9 // The Apache License v2.0 is available at
10 // http://www.opensource.org/licenses/apache2.0.php
11 // You may elect to redistribute this code under either of these licenses.
12 // ========================================================================
13
14 package org.eclipse.jetty.plus.webapp;
15
16 import java.util.EventListener;
17
18 import javax.servlet.Filter;
19 import javax.servlet.Servlet;
20 import javax.servlet.ServletException;
21
22 import org.eclipse.jetty.plus.annotation.InjectionCollection;
23 import org.eclipse.jetty.plus.annotation.LifeCycleCallbackCollection;
24 import org.eclipse.jetty.plus.annotation.RunAsCollection;
25 import org.eclipse.jetty.servlet.FilterHolder;
26 import org.eclipse.jetty.servlet.ServletContextHandler.Decorator;
27 import org.eclipse.jetty.servlet.ServletHolder;
28 import org.eclipse.jetty.util.log.Log;
29 import org.eclipse.jetty.webapp.WebAppContext;
30
31 /**
32 * WebAppDecorator
33 *
34 *
35 */
36 public class PlusDecorator implements Decorator
37 {
38 protected WebAppContext _context;
39
40 public PlusDecorator (WebAppContext context)
41 {
42 _context = context;
43 }
44
45 /* ------------------------------------------------------------ */
46 /**
47 * @see org.eclipse.jetty.servlet.ServletContextHandler.Decorator#decorateFilterHolder(org.eclipse.jetty.servlet.FilterHolder)
48 */
49 public void decorateFilterHolder(FilterHolder filter) throws ServletException
50 {
51 }
52
53 /* ------------------------------------------------------------ */
54 /**
55 * @see org.eclipse.jetty.servlet.ServletContextHandler.Decorator#decorateFilterInstance(javax.servlet.Filter)
56 */
57 public <T extends Filter> T decorateFilterInstance(T filter) throws ServletException
58 {
59 decorate(filter);
60 return filter;
61 }
62
63 /* ------------------------------------------------------------ */
64 /**
65 * @see org.eclipse.jetty.servlet.ServletContextHandler.Decorator#decorateListenerInstance(java.util.EventListener)
66 */
67 public <T extends EventListener> T decorateListenerInstance(T listener) throws ServletException
68 {
69 decorate(listener);
70 return listener;
71 }
72
73 /* ------------------------------------------------------------ */
74 /**
75 * @see org.eclipse.jetty.servlet.ServletContextHandler.Decorator#decorateServletHolder(org.eclipse.jetty.servlet.ServletHolder)
76 */
77 public void decorateServletHolder(ServletHolder holder) throws ServletException
78 {
79 decorate(holder);
80 }
81
82 /* ------------------------------------------------------------ */
83 /**
84 * @see org.eclipse.jetty.servlet.ServletContextHandler.Decorator#decorateServletInstance(javax.servlet.Servlet)
85 */
86 public <T extends Servlet> T decorateServletInstance(T servlet) throws ServletException
87 {
88 decorate(servlet);
89 return servlet;
90 }
91
92 /* ------------------------------------------------------------ */
93 /**
94 * @see org.eclipse.jetty.servlet.ServletContextHandler.Decorator#destroyFilterInstance(javax.servlet.Filter)
95 */
96 public void destroyFilterInstance(Filter f)
97 {
98 destroy(f);
99 }
100
101
102 /* ------------------------------------------------------------ */
103 /**
104 * @see org.eclipse.jetty.servlet.ServletContextHandler.Decorator#destroyServletInstance(javax.servlet.Servlet)
105 */
106 public void destroyServletInstance(Servlet s)
107 {
108 destroy(s);
109 }
110
111 /**
112 * @see org.eclipse.jetty.servlet.ServletContextHandler.Decorator#destroyListenerInstance(java.util.EventListener)
113 */
114 public void destroyListenerInstance(EventListener l)
115 {
116 destroy(l);
117 }
118
119
120 protected void decorate (Object o)
121 throws ServletException
122 {
123
124 RunAsCollection runAses = (RunAsCollection)_context.getAttribute(RunAsCollection.RUNAS_COLLECTION);
125 if (runAses != null)
126 runAses.setRunAs(o);
127
128 InjectionCollection injections = (InjectionCollection)_context.getAttribute(InjectionCollection.INJECTION_COLLECTION);
129 if (injections != null)
130 injections.inject(o);
131
132 LifeCycleCallbackCollection callbacks = (LifeCycleCallbackCollection)_context.getAttribute(LifeCycleCallbackCollection.LIFECYCLE_CALLBACK_COLLECTION);
133 if (callbacks != null)
134 {
135 try
136 {
137 callbacks.callPostConstructCallback(o);
138 }
139 catch (Exception e)
140 {
141 throw new ServletException(e);
142 }
143 }
144 }
145
146 protected void destroy (Object o)
147 {
148 LifeCycleCallbackCollection callbacks = (LifeCycleCallbackCollection)_context.getAttribute(LifeCycleCallbackCollection.LIFECYCLE_CALLBACK_COLLECTION);
149 if (callbacks != null)
150 {
151 try
152 {
153 callbacks.callPreDestroyCallback(o);
154 }
155 catch (Exception e)
156 {
157 Log.warn("Destroying instance of "+o.getClass(), e);
158 }
159 }
160 }
161 }