[Struts-cvs] struts-resume/src/web/org/appfuse/webapp StartupServlet.java,NONE,1.1

[<mr...@us...>]

Update of /cvsroot/struts/struts-resume/src/web/org/appfuse/webapp
In directory sc8-pr-cvs1:/tmp/cvs-serv29189

Added Files:
	StartupServlet.java 
Log Message:


--- NEW FILE: StartupServlet.java ---
package org.appfuse.webapp;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.appfuse.common.Constants;

import cirrus.hibernate.Hibernate;
import cirrus.hibernate.HibernateException;

/**
 * Application Startup Servlet. All initialization is performed here.<br />
 * First the Servlet Init Parameters are parsed and validated.<br />
 * Then the Context init parameters are parsed and validated. <br />
 *
 * <p><a href="StartupServlet.java.html"><i>View Source</i></a></p>
 *
 * @author Matt Raible
 * @version $Revision: 1.1 $ $Date: 2003/01/08 05:53:04 $
 *
 * @web.servlet
 *     display-name="Startup Servlet"
 *     load-on-startup="1"
 *     name="startup"
 */
public class StartupServlet extends HttpServlet {

    /**
     * The <code>Log</code> instance for this class
     */
    private Log log = LogFactory.getLog(StartupServlet.class);

    /**
     * Validates the Init and Context parameters and sets servlet context
     * variables
     *
     * @throws ServletException if the init parameters are invalid or any
     * other problems occur during initialisation
     */
    public void init() throws ServletException {
        // retrieve Servlet Init Parameters first...

        // ensure Context Parameters are present and valid
        String daoType = getServletContext().getInitParameter(Constants.DAO_TYPE);

        // if daoType is not specified, use DAO as default
        if (daoType == null) {
            log.warn("No 'daoType' Context Parameter supplied in web.xml, using default (hibernate)");
            daoType = Constants.DAO_TYPE_HIBERNATE;
        }

		getServletContext().setAttribute(Constants.DAO_TYPE, daoType);
		
        // all Context Parameters present and valid...

        // Configure Hibernate.
        try {
            Hibernate.configure();
        } catch (HibernateException h) {
            log.fatal("Error configuring Hibernate!", h);
            throw new ServletException("Error configuring Hibernate", h);
        }
        
        // output the retrieved values for the Init and Context Parameters
        if (log.isDebugEnabled()) {
            log.debug("daoType: " + daoType);
            log.debug("Initialization complete [OK]");
        }

    }

} // end of StartupServlet