001: /* ====================================================================
002: * The Jcorporate Apache Style Software License, Version 1.2 05-07-2002
003: *
004: * Copyright (c) 1995-2003 Jcorporate Ltd. All rights reserved.
005: *
006: * Redistribution and use in source and binary forms, with or without
007: * modification, are permitted provided that the following conditions
008: * are met:
009: *
010: * 1. Redistributions of source code must retain the above copyright
011: * notice, this list of conditions and the following disclaimer.
012: *
013: * 2. Redistributions in binary form must reproduce the above copyright
014: * notice, this list of conditions and the following disclaimer in
015: * the documentation and/or other materials provided with the
016: * distribution.
017: *
018: * 3. The end-user documentation included with the redistribution,
019: * if any, must include the following acknowledgment:
020: * "This product includes software developed by Jcorporate Ltd.
021: * (http://www.jcorporate.com/)."
022: * Alternately, this acknowledgment may appear in the software itself,
023: * if and wherever such third-party acknowledgments normally appear.
024: *
025: * 4. "Jcorporate" and product names such as "Expresso" must
026: * not be used to endorse or promote products derived from this
027: * software without prior written permission. For written permission,
028: * please contact info@jcorporate.com.
029: *
030: * 5. Products derived from this software may not be called "Expresso",
031: * or other Jcorporate product names; nor may "Expresso" or other
032: * Jcorporate product names appear in their name, without prior
033: * written permission of Jcorporate Ltd.
034: *
035: * 6. No product derived from this software may compete in the same
036: * market space, i.e. framework, without prior written permission
037: * of Jcorporate Ltd. For written permission, please contact
038: * partners@jcorporate.com.
039: *
040: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
041: * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
042: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
043: * DISCLAIMED. IN NO EVENT SHALL JCORPORATE LTD OR ITS CONTRIBUTORS
044: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
045: * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
046: * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
047: * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
048: * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
049: * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
050: * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
051: * SUCH DAMAGE.
052: * ====================================================================
053: *
054: * This software consists of voluntary contributions made by many
055: * individuals on behalf of the Jcorporate Ltd. Contributions back
056: * to the project(s) are encouraged when you make modifications.
057: * Please send them to support@jcorporate.com. For more information
058: * on Jcorporate Ltd. and its products, please see
059: * <http://www.jcorporate.com/>.
060: *
061: * Portions of this software are based upon other open source
062: * products and are subject to their respective licenses.
063: */
064: package com.jcorporate.expresso.kernel;
065:
066: import com.jcorporate.expresso.core.misc.ConfigManager;
067: import com.jcorporate.expresso.kernel.exception.ConfigurationException;
068: import org.apache.log4j.Logger;
069:
070: import javax.servlet.ServletConfig;
071: import javax.servlet.ServletException;
072: import javax.servlet.http.HttpServlet;
073:
074: /**
075: * This is an initialization servlet that provides a running example on how
076: * to load an Expresso runtime system
077: *
078: * @author Michael Rimov
079: * @since Expresso 5.1
080: */
081: public class RuntimeInitServlet extends HttpServlet {
082:
083: /**
084: * Logging directory parameter
085: */
086: private String loggingDirectory;
087:
088: /**
089: * Expresso Services Config location
090: */
091: private String expressoServicesConfig;
092:
093: /**
094: * Logging configuration
095: */
096: private String loggingConfig;
097:
098: /**
099: * Log4j Log
100: */
101: private Logger log;
102:
103: /**
104: * Expresso runtime root container
105: */
106: private RootContainerInterface root;
107:
108: public RuntimeInitServlet() {
109: }
110:
111: /**
112: * Initialize the Expresso runtime system.
113: *
114: * @param sc The ServletConfig. The Servlet config in web.xml needs to
115: * have 3 parameters set: loggingDirectory, expressoConfig, and loggingConfig.
116: * @throws javax.servlet.ServletException upon instantiation error
117: */
118: public void init(ServletConfig sc)
119: throws javax.servlet.ServletException {
120: super .init(sc);
121:
122: try {
123: long startTime = System.currentTimeMillis();
124: loggingDirectory = sc
125: .getInitParameter(ConfigManager.LOG_DIR_PARAM_NAME);
126: expressoServicesConfig = sc
127: .getInitParameter("expressoConfig");
128: loggingConfig = sc.getInitParameter("loggingConfig");
129: root = SystemFactory.buildExpressoComponentSystem(
130: expressoServicesConfig, loggingConfig,
131: loggingDirectory);
132:
133: log = Logger.getLogger(RuntimeInitServlet.class);
134: long endTime = System.currentTimeMillis();
135: log.info("Completed initialization in "
136: + (endTime - startTime) / 1000 + " seconds");
137: } catch (ConfigurationException ex) {
138: this .log("Error loading Expresso Configuration", ex);
139: throw new ServletException(
140: "Error loading Expresso Configuration", ex);
141: }
142: }
143:
144: /**
145: * Destroys the servlet and the Global Expresso runtime container.
146: */
147: public void destroy() {
148: if (log != null) {
149: log.info("Destroying Global Runtime Container");
150: }
151:
152: if (root != null) {
153: root.destroy();
154: }
155: }
156:
157: }
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