actions.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: Actions.java,v 1.5 2005/05/17 16:40:13 jmettraux Exp $
 */

//
// Actions.java
//
// [e-mail]
//
// generated with 
// jtmpl 1.1.00 16.08.2003 John Mettraux ([e-mail])
//

package openwfe.org.auth;

import javax.security.auth.Subject;
import openwfe.org.Service;
import openwfe.org.actions.ServiceAction;


/**
 * This class, for the moment, holds a unique method that
 * executes the required action as a ServiceAction (openwfe.org.actions).
 * This ServiceAction class is part of the openwfe-service-actions.jar
 * which may be security controlled, thus the action may be 'impeached'.
 *
 * <p><font size=2>CVS Info :
 * <br>$Author: jmettraux $
 * <br>$Id: Actions.java,v 1.5 2005/05/17 16:40:13 jmettraux Exp $ </font>
 *
 * @author [e-mail]
 */
public abstract class Actions
{

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


    /**
     * the method
     */
    public static Object executeAction
        (Subject subject,
         Service service,
         String methodName,
         Object[] args)
    throws 
        java.rmi.RemoteException
    {
        {
            BasicPrincipal bp = BasicPrincipal.getBasicPrincipal(subject);
            if (bp != null)
            {
                log.debug
                    ("executing action on behalf of '"+bp.getName()+"'");
            }
        }

        try
        {
            if (args == null) args = new Object[] { };

            ServiceAction action = new ServiceAction
                (service,
                 methodName,
                 args);

            return 
                Subject.doAs(subject, action);
        }
        catch (java.security.PrivilegedActionException pae)
        {
            log.debug
                ("Failed to '"+methodName+"' on '"+service.getName()+"'", 
                 pae.getException());
            throw new java.rmi.RemoteException
                ("Failed to '"+methodName+"' on '"+service.getName()+"'", 
                 pae.getException());
        }
    }

}