wumansession.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: WumanSession.java,v 1.12 2005/05/17 16:41:00 jmettraux Exp $
 */

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

package openwfe.org.uman.web;

import java.security.Permission;
import javax.servlet.ServletContext;
import openwfe.org.auth.Grant;
import openwfe.org.auth.Principal;
import openwfe.org.uman.AdminSession;


/**
 * Encapsulating the admin session and its 'edited' state.
 *
 * <p><font size=2>CVS Info :
 * <br>$Author: jmettraux $
 * <br>$Date: 2005/05/17 16:41:00 $
 * <br>$Id: WumanSession.java,v 1.12 2005/05/17 16:41:00 jmettraux Exp $ </font>
 *
 * @author [e-mail]
 */
public class WumanSession
{

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

    //
    // FIELDS

    public boolean isModified = false;

    protected ServletContext servletContext = null;
    protected String username = null;
    protected AdminSession session = null;
    protected java.util.Map principals = null;
    protected java.util.Map grants = null;

    //
    // CONSTRUCTORS

    public WumanSession 
        (ServletContext context, String username, AdminSession session)
    throws 
        Exception
    {
        this.servletContext = context;
        this.username = username;
        this.session = session;
        reset();
    }

    //
    // METHODS

    public String getUsername ()
    {
        return this.username;
    }

    public AdminSession getAdminSession ()
    {
        return this.session;
    }

    public java.util.Map getPrincipals ()
    {
        return this.principals;
    }

    public java.util.Collection getPrincipalValues ()
    {
        return this.principals.values();
    }

    public java.util.Map getGrants ()
    {
        return this.grants;
    }

    public java.util.Set getGrantNames ()
    {
        return this.grants.keySet();
    }

    public java.util.Collection getGrantValues ()
    {
        return this.grants.values();
    }

    public void removeGrant (String grantName)
    {
        this.grants.remove(grantName);

        java.util.Iterator it = this.principals.values().iterator();
        while (it.hasNext())
        {
            Principal p = (Principal)it.next();
            p.getGrants().remove(grantName);
        }

        this.isModified = true;
    }

    public void removePrincipal (String principalName)
    {
        this.principals.remove(principalName);

        this.isModified = true;
    }

    public void replacePermission
        (String grantName, String permissionKey, Permission permission)
    {
        //log.debug("grantName     >"+grantName+"<");
        //log.debug("permissionKey >"+permissionKey+"<");
        //log.debug("permission     "+permission);

        Grant grant = (Grant)this.grants.get(grantName);

        grant.removePermission(permissionKey);
        grant.addPermission(permission);

        this.isModified = true;
    }

    public void removePermission
        (String grantName, String permissionKey)
    {
        Grant grant = (Grant)this.grants.get(grantName);

        grant.removePermission(permissionKey);

        this.isModified = true;
    }

    public void commit ()
        throws Exception
    {
        this.session.updatePrincipals(this.principals);
        this.session.updateGrants(this.grants);
        this.session.save();

        this.isModified = false;
    }

    public void reset ()
        throws Exception
    {
        this.principals = this.session.getPrincipals();
        this.grants = this.session.getGrants();

        this.isModified = false;
    }

    public void logout ()
        throws Exception
    {
        this.principals = null;
        this.grants = null;
        this.isModified = false;
        this.session.release();
    }

    public java.util.List getHandledClasses (Class parentClass)
    {
        try
        {
            return HandlerMap.getHandlerMap(this.servletContext)
                .getHandledClasses(parentClass);
        }
        catch (Exception e)
        {
            log.debug("Problem with the HandlerMap", e);

            java.util.List result = new java.util.ArrayList(1);
            result.add("--error-- "+e);
            return result;
        }
    }

    public HandlerMap getHandlerMap ()
        throws WumanException
    {
        return HandlerMap.getHandlerMap(this.servletContext);
    }

}