removerelated.java

Sequoia ERP是一个真正的企业级开源ERP解决方案。它提供的模块包括：电子商务应用(e-commerce), POS系统(point of sales),知识管理,存货与仓库管理

/*
 * $Id: RemoveRelated.java 5462 2005-08-05 18:35:48Z jonesde $
 *
 *  Copyright (c) 2001-2005 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.entityops;

import org.ofbiz.base.util.Debug;
import org.ofbiz.entity.GenericEntityException;
import org.ofbiz.entity.GenericValue;
import org.ofbiz.minilang.SimpleMethod;
import org.ofbiz.minilang.method.ContextAccessor;
import org.ofbiz.minilang.method.MethodContext;
import org.ofbiz.minilang.method.MethodOperation;
import org.w3c.dom.Element;

/**
 * Uses the delegator to remove entities related to the specified value object from the datasource
 *
 * @author     <a href="mailto:[e-mail]">David E. Jones</a>
 * @version    $Rev: 5462 $
 * @since      2.0
 */
public class RemoveRelated extends MethodOperation {
    
    public static final String module = RemoveRelated.class.getName();
    
    ContextAccessor valueAcsr;
    String relationName;
    String doCacheClearStr;

    public RemoveRelated(Element element, SimpleMethod simpleMethod) {
        super(element, simpleMethod);
        valueAcsr = new ContextAccessor(element.getAttribute("value-name"));
        relationName = element.getAttribute("relation-name");
        doCacheClearStr = element.getAttribute("do-cache-clear");
    }

    public boolean exec(MethodContext methodContext) {
        boolean doCacheClear = !"false".equals(doCacheClearStr);
        String relationName = methodContext.expandString(this.relationName);
        
        GenericValue value = (GenericValue) valueAcsr.get(methodContext);
        if (value == null) {
            String errMsg = "In remove-related a value was not found with the specified valueAcsr: " + valueAcsr + ", not removing related";

            Debug.logWarning(errMsg, module);
            if (methodContext.getMethodType() == MethodContext.EVENT) {
                methodContext.putEnv(simpleMethod.getEventErrorMessageName(), errMsg);
                methodContext.putEnv(simpleMethod.getEventResponseCodeName(), simpleMethod.getDefaultErrorCode());
            } else if (methodContext.getMethodType() == MethodContext.SERVICE) {
                methodContext.putEnv(simpleMethod.getServiceErrorMessageName(), errMsg);
                methodContext.putEnv(simpleMethod.getServiceResponseMessageName(), simpleMethod.getDefaultErrorCode());
            }
            return false;
        }

        try {
            methodContext.getDelegator().removeRelated(relationName, value, doCacheClear);
        } catch (GenericEntityException e) {
            Debug.logError(e, module);
            String errMsg = "ERROR: Could not complete the " + simpleMethod.getShortDescription() + " process [problem removing the relation " + relationName + " of the value " + valueAcsr + " value: " + e.getMessage() + "]";

            if (methodContext.getMethodType() == MethodContext.EVENT) {
                methodContext.putEnv(simpleMethod.getEventErrorMessageName(), errMsg);
                methodContext.putEnv(simpleMethod.getEventResponseCodeName(), simpleMethod.getDefaultErrorCode());
            } else if (methodContext.getMethodType() == MethodContext.SERVICE) {
                methodContext.putEnv(simpleMethod.getServiceErrorMessageName(), errMsg);
                methodContext.putEnv(simpleMethod.getServiceResponseMessageName(), simpleMethod.getDefaultErrorCode());
            }
            return false;
        }
        return true;
    }

    public String rawString() {
        // TODO: something more than the empty tag
        return "<remove-related/>";
    }
    public String expandedString(MethodContext methodContext) {
        // TODO: something more than a stub/dummy
        return this.rawString();
    }
}