/*
* $Header: /home/cvspublic/jakarta-struts/src/share/org/apache/struts/actions/AddFormBeanAction.java,v 1.3 2001/02/21 00:35:52 craigmcc Exp $
* $Revision: 1.3 $
* $Date: 2001/02/21 00:35:52 $
*
* ====================================================================
*
* The Apache Software License, Version 1.1
*
* Copyright (c) 1999-2001 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution, if
* any, must include the following acknowlegement:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowlegement may appear in the software itself,
* if and wherever such third-party acknowlegements normally appear.
*
* 4. The names "The Jakarta Project", "Struts", and "Apache Software
* Foundation" must not be used to endorse or promote products derived
* from this software without prior written permission. For written
* permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache"
* nor may "Apache" appear in their names without prior written
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*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*
*/
package org.apache.struts.actions;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionFormBean;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.util.RequestUtils;
/**
* <p>A standard <strong>Action</strong> that calls the
* <code>addFormBean()</code> method of our controller servlet to add a new
* action form definition dynamically. The new definition replaces any
* existing definition for the same bean name. This action expects request
* parameters whose names match the properties of <code>ActionFormBean</code>.
* </p>
*
* @author Craig R. McClanahan
* @version $Revision: 1.3 $ $Date: 2001/02/21 00:35:52 $
*/
public class AddFormBeanAction extends Action {
// --------------------------------------------------------- Public Methods
/**
* Process the specified HTTP request, and create the corresponding HTTP
* response (or forward to another web component that will create it).
* Return an <code>ActionForward</code> instance describing where and how
* control should be forwarded, or <code>null</code> if the response has
* already been completed.
*
* @param mapping The ActionMapping used to select this instance
* @param actionForm The optional ActionForm bean for this request (if any)
* @param request The HTTP request we are processing
* @param response The HTTP response we are creating
*
* @exception IOException if an input/output error occurs
* @exception ServletException if a servlet exception occurs
*/
public ActionForward perform(ActionMapping mapping,
ActionForm form,
HttpServletRequest request,
HttpServletResponse response)
throws IOException, ServletException {
// Construct a new ActionFormBean instance
ActionFormBean formBean = null;
try {
Class clazz = Class.forName(getServlet().getFormBeanClass());
formBean = (ActionFormBean) clazz.newInstance();
} catch (Throwable t) {
throw new ServletException("ActionFormBean", t);
}
RequestUtils.populate(formBean, request);
// Validate the parameters of the new instance
boolean ok = true;
response.setContentType("text/plain");
PrintWriter writer = response.getWriter();
if (formBean.getName() == null) {
writer.println("FAIL - Missing 'name' parameter");
ok = false;
}
if (formBean.getType() == null) {
writer.println("FAIL - Missing 'type' parameter");
ok = false;
}
if (!ok) {
writer.flush();
writer.close();
return (null);
}
// Update the configuration of our controller servlet
getServlet().addFormBean(formBean);
// Return a successful response
writer.println("OK");
writer.flush();
writer.close();
return (null);
}
}