fieldtoenv.java

国外的一套开源CRM

/*
 * $Id: FieldToEnv.java,v 1.2 2003/09/14 05:40:41 jonesde Exp $
 *
 *  Copyright (c) 2001, 2002 The Open For Business Project - www.ofbiz.org
 *
 *  Permission is hereby granted, free of charge, to any person obtaining a
 *  copy of this software and associated documentation files (the "Software"),
 *  to deal in the Software without restriction, including without limitation
 *  the rights to use, copy, modify, merge, publish, distribute, sublicense,
 *  and/or sell copies of the Software, and to permit persons to whom the
 *  Software is furnished to do so, subject to the following conditions:
 *
 *  The above copyright notice and this permission notice shall be included
 *  in all copies or substantial portions of the Software.
 *
 *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 *  OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 *  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 *  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
 *  CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT
 *  OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR
 *  THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
package org.ofbiz.minilang.method.envops;

import java.util.*;

import org.w3c.dom.*;
import org.ofbiz.base.util.*;
import org.ofbiz.minilang.*;
import org.ofbiz.minilang.method.*;

/**
 * Copies a map field to an environment field
 *
 * @author     <a href="mailto:[e-mail]">David E. Jones</a>
 * @version    $Revision: 1.2 $
 * @since      2.0
 */
public class FieldToEnv extends MethodOperation {
    
    public static final String module = FieldToEnv.class.getName();
    
    ContextAccessor envAcsr;
    ContextAccessor mapAcsr;
    ContextAccessor fieldAcsr;

    public FieldToEnv(Element element, SimpleMethod simpleMethod) {
        super(element, simpleMethod);
        envAcsr = new ContextAccessor(element.getAttribute("env-name"));
        mapAcsr = new ContextAccessor(element.getAttribute("map-name"));
        fieldAcsr = new ContextAccessor(element.getAttribute("field-name"));

        // set fieldAcsr to their defualt value of envAcsr if empty - this is the way it USED to work, so still supporting it, but a parsing error will result
        if (fieldAcsr.isEmpty()) {
            fieldAcsr = envAcsr;
        }
        // this is the new way that makes more sense, ie the destination should default to the source
        if (envAcsr.isEmpty()) {
            envAcsr = fieldAcsr;
        }
    }

    public boolean exec(MethodContext methodContext) {
        Object fieldVal = null;

        if (!mapAcsr.isEmpty()) {
            Map fromMap = (Map) mapAcsr.get(methodContext);

            if (fromMap == null) {
                Debug.logWarning("Map not found with name " + mapAcsr + ", not copying field", module);
                return true;
            }

            fieldVal = fieldAcsr.get(fromMap, methodContext);
        } else {
            // no map name, try the env
            fieldVal = fieldAcsr.get(methodContext);
        }

        if (fieldVal == null) {
            if (Debug.verboseOn()) Debug.logVerbose("Field value not found with name " + fieldAcsr + " in Map with name " + mapAcsr + ", not copying field", module);
            return true;
        }

        envAcsr.put(methodContext, fieldVal);
        return true;
    }
}