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Java > Open Source Codes > com > jcorporate > expresso > services > controller > configuration > ConfigurationBase


1 package com.jcorporate.expresso.services.controller.configuration;
2
3 /* ====================================================================
4  * The Jcorporate Apache Style Software License, Version 1.2 05-07-2002
5  *
6  * Copyright (c) 1995-2002 Jcorporate Ltd. All rights reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  *
12  * 1. Redistributions of source code must retain the above copyright
13  * notice, this list of conditions and the following disclaimer.
14  *
15  * 2. Redistributions in binary form must reproduce the above copyright
16  * notice, this list of conditions and the following disclaimer in
17  * the documentation and/or other materials provided with the
18  * distribution.
19  *
20  * 3. The end-user documentation included with the redistribution,
21  * if any, must include the following acknowledgment:
22  * "This product includes software developed by Jcorporate Ltd.
23  * (http://www.jcorporate.com/)."
24  * Alternately, this acknowledgment may appear in the software itself,
25  * if and wherever such third-party acknowledgments normally appear.
26  *
27  * 4. "Jcorporate" and product names such as "Expresso" must
28  * not be used to endorse or promote products derived from this
29  * software without prior written permission. For written permission,
30  * please contact info@jcorporate.com.
31  *
32  * 5. Products derived from this software may not be called "Expresso",
33  * or other Jcorporate product names; nor may "Expresso" or other
34  * Jcorporate product names appear in their name, without prior
35  * written permission of Jcorporate Ltd.
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37  * 6. No product derived from this software may compete in the same
38  * market space, i.e. framework, without prior written permission
39  * of Jcorporate Ltd. For written permission, please contact
40  * partners@jcorporate.com.
41  *
42  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
43  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
44  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
45  * DISCLAIMED. IN NO EVENT SHALL JCORPORATE LTD OR ITS CONTRIBUTORS
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47  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
48  * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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50  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
51  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
52  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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55  *
56  * This software consists of voluntary contributions made by many
57  * individuals on behalf of the Jcorporate Ltd. Contributions back
58  * to the project(s) are encouraged when you make modifications.
59  * Please send them to support@jcorporate.com. For more information
60  * on Jcorporate Ltd. and its products, please see
61  * <http://www.jcorporate.com/>.
62  *
63  * Portions of this software are based upon other open source
64  * products and are subject to their respective licenses.
65  */
66
67 import com.jcorporate.expresso.core.controller.ControllerException;
68 import com.jcorporate.expresso.core.controller.ControllerRequest;
69 import com.jcorporate.expresso.core.controller.State;
70 import com.jcorporate.expresso.kernel.ExpressoComponent;
71 import com.jcorporate.expresso.kernel.RootContainerInterface;
72 import com.jcorporate.expresso.kernel.management.ExpressoRuntimeMap;
73 import com.jcorporate.expresso.kernel.util.LocatorUtils;
74 import com.jcorporate.expresso.services.controller.Configuration;
75 import org.apache.log4j.Logger;
76
77 /**
78  * Base class state for managing the Expresso Configuration System
79  *
80  * @author Michael Rimov
81  * @version $Revision: 1.5 $ on $Date: 2004/11/17 20:48:17 $
82  * @since Expresso 5.1
83  */
84
85 public class ConfigurationBase extends State {
86     private Logger log = Logger.getLogger(ConfigurationBase.class);
87
88     protected LocatorUtils lc = null;
89
90     public ConfigurationBase(String JavaDoc name, String JavaDoc description) {
91         super(name, description);
92     }
93
94     /**
95      * Retreives the current runtime that we're working on. It does so by checking
96      * out each key in the session.
97      *
98      * @param request The ControllerRequest object used to get the session information
99      * @return The RootcontainerInterface or null if it couldn't be found.
100      */
101     protected RootContainerInterface getRuntime(ControllerRequest request)
102             throws ControllerException {
103         String JavaDoc key = Configuration.CURRENT_RUNTIME_KEY;
104         String JavaDoc curRuntime = (String JavaDoc) request.getSession().getPersistentAttribute(key);
105
106         RootContainerInterface returnValue = ExpressoRuntimeMap.getRuntime(curRuntime);
107         if (returnValue == null) {
108             log.error("Unable to find root container interface [aka runtime] for " + key);
109             return null;
110         }
111
112         lc = new LocatorUtils((ExpressoComponent) returnValue);
113         return returnValue;
114     }
115 }
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