/*
* JBoss, Home of Professional Open Source.
* Copyright 2006, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.console.plugins.helpers;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
/**
* <description>
*
* @see <related>
*
* @author <a href="mailto:sacha.labourey@cogito-info.ch">Sacha Labourey</a>.
* @version $Revision: 57191 $
*
* <p><b>Revisions:</b>
*
* <p><b>23 dec 2002 Sacha Labourey:</b>
* <ul>
* <li> First implementation </li>
* </ul>
*/
public class ServletPluginHelper
extends javax.servlet.http.HttpServlet
{
// Constants -----------------------------------------------------
public static final String WRAPPER_CLASS_PARAM = "WrapperClass";
// Attributes ----------------------------------------------------
protected ServletConfig config = null;
protected PluginWrapper wrapper = null;
// Static --------------------------------------------------------
// Constructors --------------------------------------------------
// Public --------------------------------------------------------
// Z implementation ----------------------------------------------
// HttpServlet overrides -----------------------------------------
public void init (ServletConfig config) throws ServletException
{
try
{
super.init (config);
this.config = config;
wrapper = createPluginWrapper ();
wrapper.init (config);
}
catch (Throwable e)
{
//throw new ServletException ("Failed to init plugin", e);
// @todo, cleanup the logic to display an unavailable place holder
log("Failed to init plugin, "+e.getMessage());
}
}
public void destroy ()
{
if( wrapper != null )
{
wrapper.destroy ();
}
super.destroy ();
}
// Package protected ---------------------------------------------
// Protected -----------------------------------------------------
protected PluginWrapper createPluginWrapper () throws Exception
{
String tmp = config.getInitParameter(WRAPPER_CLASS_PARAM);
if (tmp != null && !"".equals(tmp))
{
// These plugins do provide their own wrapper implementation
//
Class clazz = Thread.currentThread().getContextClassLoader().loadClass(tmp);
return (PluginWrapper) (clazz.newInstance());
}
// Otherwise we make the hypothesis that the script provides
// all required information
//
return new BasePluginWrapper ();
}
// Private -------------------------------------------------------
// Inner classes -------------------------------------------------
}
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