mergeutils.java

这是一个关于工作流管理的系统

/*
 * 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: MergeUtils.java,v 1.4 2005/05/17 16:40:25 jmettraux Exp $
 */

//
// MergeUtils.java
//
// [e-mail]
//
// generated with 
// jtmpl 1.1.01 2004/05/19 ([e-mail])
//

package openwfe.org.engine.expressions.sync;

import openwfe.org.engine.workitem.Attribute;
import openwfe.org.engine.workitem.InFlowWorkItem;


/**
 * This utility class currently holds only one method fro merging 
 * workitems : merge().
 *
 * <p><font size=2>CVS Info :
 * <br>$Author: jmettraux $
 * <br>$Id: MergeUtils.java,v 1.4 2005/05/17 16:40:25 jmettraux Exp $ </font>
 *
 * @author [e-mail]
 */
public abstract class MergeUtils
{

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

    /**
     * The target will be overriden with the fields of the source
     */
    public static InFlowWorkItem merge 
        (InFlowWorkItem target, final InFlowWorkItem source)
    {
        //
        // workitem fields

        final java.util.Iterator it = 
            source.getAttributes().keySet().iterator();
        while (it.hasNext())
        {
            final Attribute key = (Attribute)it.next();
            final Attribute value = source.getAttributes().get(key);

            target.getAttributes().put(key, value);
        }

        //
        // workitem attributes
        
        /*
         * maybe some differientation between the two history tracks
         * would be good
         */
        target.getHistory().addAll(source.getHistory());

        //
        // ok

        return target;
    }

}