edititemaction.java

OpenWFE是一个开放源码的Java工作流引擎。它是一个完整的业务处理管理套件：一个引擎

/*
 * Copyright (c) 2001-2006, John Mettraux, OpenWFE.org
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without 
 * modification, are permitted provided that the following conditions are met:
 * 
 * . Redistributions of source code must retain the above copyright notice, this
 *   list of conditions and the following disclaimer.  
 * 
 * . 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.
 * 
 * . Neither the name of the "OpenWFE" nor the names of its contributors may be
 *   used to endorse or promote products derived from this software without
 *   specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
 * AND ANY EXPRESS 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 COPYRIGHT OWNER OR 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 USE, DATA, OR PROFITS; OR BUSINESS 
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
 * POSSIBILITY OF SUCH DAMAGE.
 *
 * $Id: EditItemAction.java 2908 2006-07-03 11:32:15Z jmettraux $
 */

//
// EditItemAction.java
//
// [e-mail]
//
// generated with 
// jtmpl 1.0.04 31.10.2002 John Mettraux ([e-mail])
//

package openwfe.org.uman.web.actions;

import java.rmi.Naming;
import java.security.Principal;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.security.auth.Subject;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionError;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.DynaActionForm;
import openwfe.org.auth.Grant;
import openwfe.org.uman.AdminSession;
import openwfe.org.rmi.session.WorkSessionServer;
import openwfe.org.uman.web.Handler;
import openwfe.org.uman.web.Definitions;


/**
 * Handling a request for item edition
 *
 * <p><font size=2>CVS Info :
 * <br>$Author: jmettraux $
 * <br>$Date: 2006-07-03 13:32:15 +0200 (Mon, 03 Jul 2006) $
 * <br>$Id: EditItemAction.java 2908 2006-07-03 11:32:15Z jmettraux $ </font>
 *
 * @author [e-mail]
 */
public class EditItemAction

    extends UmanAction

{

    private final static org.apache.log4j.Logger log = org.apache.log4j.Logger
        .getLogger(EditItemAction.class.getName());

    //
    // CONSTANTS (definitions)

    public final static String CLASS = "class";

    //
    // FIELDS

    //
    // CONSTRUCTORS

    //
    // METHODS

    public ActionForward execute
        (ActionMapping mapping,
         ActionForm form,
         HttpServletRequest req,
         HttpServletResponse res)
    throws 
        java.lang.Exception
    {
        ActionErrors errors = new ActionErrors();

        try
        {
            String grantName = req.getParameter(GRANT_NAME);
            String principalName = req.getParameter(PRINCIPAL_NAME);
            String permissionKey = req.getParameter(PERMISSION_KEY);

            Handler handler = null;
            Object itemToEdit = null;

            String className = req.getParameter(CLASS);

            if (className == null)
                //
                // item update
            {
                if (principalName != null)
                {
                    //itemToEdit = getAdminSession(req)
                    //    .getPrincipals().get(principalName);

                    itemToEdit = getPrincipal(req, principalName);
                }
                else if (grantName != null &&
                    permissionKey != null)
                {
                    Grant g = (Grant)getAdminSession(req)
                        .getGrants().get(grantName);

                    itemToEdit = g.getPermission(permissionKey);

                    req.getSession()
                        .setAttribute(GRANT_NAME, grantName);
                    req.getSession()
                        .setAttribute(PERMISSION_KEY, permissionKey);
                }
                else // if (grantName != null)
                {
                    itemToEdit = getAdminSession(req)
                        .getGrants().get(grantName);
                }

                //
                // find handler

                handler = getAdminSession(req).getHandlerMap()
                    .getHandler(itemToEdit.getClass());
            }
            else

                //
                // new item
            {
                //itemToEdit = null;

                //
                // extract new item class

                //log.debug("***************** className is >"+className+"<");

                Class clazz = Class.forName(className);

                //
                // find handler

                handler = getAdminSession(req).getHandlerMap()
                    .getHandler(clazz);

                if (grantName != null)
                    req.getSession().setAttribute(GRANT_NAME, grantName);
            }

            //
            // prepare form

            Object payload = null;

            if (className != null) 
                payload = className;
            else
                payload = itemToEdit;

            handler.loadInRequest(payload, req);

            req.getSession().setAttribute(Handler.HANDLER, handler);
            req.getSession().setAttribute(Handler.HANDLED_ITEM, itemToEdit);
        }
        catch (Exception e)
        {
            log.info("Error", e);

            errors.add
                (ActionErrors.GLOBAL_ERROR, 
                 new ActionError("wuman.error", ""+e));

            saveErrors(req, errors);
            return mapping.findForward(Definitions.FAILURE);
        }

        return mapping.findForward(Definitions.SUCCESS);
    }

}