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org.apache.jetspeed.request.JetspeedRequestContextComponent	0%	0%

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.jetspeed.request;
18
19		import java.lang.reflect.Constructor;
20		import java.util.HashMap;
21		import java.util.Map;
22
23		import javax.servlet.ServletConfig;
24		import javax.servlet.http.HttpServletRequest;
25		import javax.servlet.http.HttpServletResponse;
26
27		import org.apache.commons.logging.Log;
28		import org.apache.commons.logging.LogFactory;
29		import org.apache.jetspeed.PortalReservedParameters;
30		import org.apache.jetspeed.aggregator.CurrentWorkerContext;
31		import org.apache.jetspeed.userinfo.UserInfoManager;
32
33		/**
34		* JetspeedRequestContextComponent
35		*
36		* @author <a href="mailto:taylor@apache.org">David Sean Taylor</a>
37		* @version $Id: JetspeedRequestContextComponent.java 587064 2007-10-22 11:54:11Z woonsan $
38		*/
39		public class JetspeedRequestContextComponent implements RequestContextComponent
40		{
41	0	private String contextClassName = null;
42	0	private Class contextClass = null;
43		/** The user info manager. */
44		private UserInfoManager userInfoMgr;
45	0	private ThreadLocal tlRequestContext = new ThreadLocal();
46		private Map requestContextObjects;
47
48	0	private final static Log log = LogFactory.getLog(JetspeedRequestContextComponent.class);
49
50		public JetspeedRequestContextComponent(String contextClassName)
51	0	{
52	0	this.contextClassName = contextClassName;
53	0	this.requestContextObjects = new HashMap();
54	0	}
55
56		public JetspeedRequestContextComponent(String contextClassName,
57		UserInfoManager userInfoMgr)
58	0	{
59	0	this.contextClassName = contextClassName;
60	0	this.userInfoMgr = userInfoMgr;
61	0	this.requestContextObjects = new HashMap();
62	0	}
63
64		public JetspeedRequestContextComponent(String contextClassName,
65		UserInfoManager userInfoMgr,
66		Map requestContextObjects)
67	0	{
68	0	this.contextClassName = contextClassName;
69	0	this.userInfoMgr = userInfoMgr;
70	0	this.requestContextObjects = requestContextObjects;
71	0	}
72
73		public RequestContext create(HttpServletRequest req, HttpServletResponse resp, ServletConfig config)
74		{
75	0	RequestContext context = null;
76
77		try
78		{
79	0	if (null == contextClass)
80		{
81	0	contextClass = Class.forName(contextClassName);
82		}
83
84	0	Constructor constructor =
85		contextClass.getConstructor(
86		new Class[] {
87		HttpServletRequest.class,
88		HttpServletResponse.class,
89		ServletConfig.class,
90		UserInfoManager.class,
91		Map.class});
92	0	context = (RequestContext) constructor.newInstance(new Object[] { req, resp, config, userInfoMgr, requestContextObjects});
93
94		}
95	0	catch (Exception e)
96		{
97	0	String msg = "JetspeedRequestContextComponent: Failed to create a Class object for RequestContext: " + e.toString();
98	0	log.error(msg);
99	0	}
100	0	tlRequestContext.set(context);
101	0	return context;
102		}
103
104		public void release(RequestContext context)
105		{
106	0	tlRequestContext.set(null);
107	0	}
108
109		/**
110		* The servlet request can always get you back to the Request Context if you need it
111		* This static accessor provides this capability
112		*
113		* @param request
114		* @return RequestContext
115		*/
116		public RequestContext getRequestContext(HttpServletRequest request)
117		{
118	0	RequestContext rc = (RequestContext) request.getAttribute(PortalReservedParameters.REQUEST_CONTEXT_ATTRIBUTE);
119	0	if(rc != null)
120		{
121	0	return rc;
122		}
123		else
124		{
125	0	log.error("Cannot call getRequestContext(HttpServletRequest request) before it has been created and set for this thread.");
126	0	throw new IllegalStateException("Cannot call getRequestContext(HttpServletRequest request) before it has been created and set for this thread.");
127		}
128		}
129
130		public RequestContext getRequestContext()
131		{
132	0	RequestContext rc = null;
133
134	0	if (CurrentWorkerContext.getParallelRenderingMode())
135		{
136	0	rc = (RequestContext) CurrentWorkerContext.getAttribute(PortalReservedParameters.REQUEST_CONTEXT_ATTRIBUTE);
137		}
138		else
139		{
140	0	rc = (RequestContext) tlRequestContext.get();
141		}
142
143	0	if(rc != null)
144		{
145	0	return rc;
146		}
147		else
148		{
149	0	log.error("Cannot call getRequestContext() before it has been created and set for this thread.");
150	0	throw new IllegalStateException("Cannot call getRequestContext() before it has been created and set for this thread.");
151		}
152		}
153
154		}

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