delegateaction.java

一个工作流设计及定义的系统,可以直接与数据库结合进行系统工作流程的定义及应用.

/*
 * Copyright (c) 2005, 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: DelegateAction.java,v 1.9 2005/05/17 16:41:01 jmettraux Exp $
 */

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

package openwfe.org.webclient.actions;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionForward;
import openwfe.org.webclient.Definitions;
import openwfe.org.webclient.OwfeSession;


/**
 * forwards a workitem to the next participant in the flow.
 * (in fact, just gives back the workitem to the worklist...)
 *
 * <p><font size=2>CVS Info :
 * <br>$Author: jmettraux $
 * <br>$Date: 2005/05/17 16:41:01 $
 * <br>$Id: DelegateAction.java,v 1.9 2005/05/17 16:41:01 jmettraux Exp $ </font>
 *
 * @author [e-mail]
 */
public class DelegateAction

    extends OpenWfeAction

{

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

    //
    // CONSTANTS (definitions)

    public final static String CHOOSE_TARGET 
        = "chooseTarget";
    public final static String TARGET_STORE_NAME 
        = "targetStoreName";
    public final static String TARGET_PARTICIPANT_NAME 
        = "targetParticipantName";

    //
    // FIELDS

    //
    // CONSTRUCTORS

    //
    // METHODS

    public ActionForward execute
        (final ActionMapping mapping,
         final ActionForm form,
         final HttpServletRequest req,
         final HttpServletResponse res)
    throws 
        java.lang.Exception
    {
        //
        // request for delegate screen 
        // or real delegation order (target store determined) ?
        
        try
        {
            String targetStoreName = 
                req.getParameter(TARGET_STORE_NAME);
            String targetParticipantName = 
                req.getParameter(TARGET_PARTICIPANT_NAME);

            if (targetStoreName == null && targetParticipantName == null)
            {
                //
                // 'save' changes to workitem

                OwfeSession.parseWorkItem(req);

                return mapping.findForward(CHOOSE_TARGET);
            }

            OwfeSession.delegate(req, targetStoreName, targetParticipantName);
        }
        catch (Exception e)
        {
            return handleException(mapping, req, "Delegate failed", e);
        }

        return mapping.findForward(Definitions.SUCCESS);
    }

}