serviceeventhandler.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: ServiceEventHandler.java 6475 2006-01-07 17:57:17Z 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.webapp.event;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.apache.commons.fileupload.DiskFileUpload;
import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileUpload;
import org.apache.commons.fileupload.FileUploadException;

import org.ofbiz.base.util.Debug;
import org.ofbiz.base.util.UtilHttp;
import org.ofbiz.base.util.UtilProperties;
import org.ofbiz.base.util.UtilValidate;
import org.ofbiz.entity.GenericValue;
import org.ofbiz.entity.util.ByteWrapper;
import org.ofbiz.service.DispatchContext;
import org.ofbiz.service.GenericServiceException;
import org.ofbiz.service.LocalDispatcher;
import org.ofbiz.service.ModelParam;
import org.ofbiz.service.ModelService;
import org.ofbiz.service.ServiceAuthException;
import org.ofbiz.service.ServiceValidationException;

/**
 * ServiceEventHandler - Service Event Handler
 *
 * @author     <a href="mailto:[e-mail]">Andy Zeneski</a>
 * @author     <a href="mailto:[e-mail]">David E. Jones</a>
 * @version    $Rev: 6475 $
 * @since      2.0
 */
public class ServiceEventHandler implements EventHandler {

    public static final String module = ServiceEventHandler.class.getName();

    public static final String SYNC = "sync";
    public static final String ASYNC = "async";

    /**
     * @see org.ofbiz.webapp.event.EventHandler#init(javax.servlet.ServletContext)
     */
    public void init(ServletContext context) throws EventHandlerException {
    }

    /**
     * @see org.ofbiz.webapp.event.EventHandler#invoke(java.lang.String, java.lang.String, javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
     */
    public String invoke(String eventPath, String eventMethod, HttpServletRequest request, HttpServletResponse response) throws EventHandlerException {
        // make sure we have a valid reference to the Service Engine
        LocalDispatcher dispatcher = (LocalDispatcher) request.getAttribute("dispatcher");
        if (dispatcher == null) {
            throw new EventHandlerException("The local service dispatcher is null");
        }
        DispatchContext dctx = dispatcher.getDispatchContext();
        if (dctx == null) {
            throw new EventHandlerException("Dispatch context cannot be found");
        }

        // get the details for the service(s) to call
        String mode = SYNC;
        String serviceName = null;

        if (eventPath == null || eventPath.length() == 0) {
            mode = SYNC;
        } else {
            mode = eventPath;
        }

        // nake sure we have a defined service to call
        serviceName = eventMethod;
        if (serviceName == null) {
            throw new EventHandlerException("Service name (eventMethod) cannot be null");
        }
        if (Debug.verboseOn()) Debug.logVerbose("[Set mode/service]: " + mode + "/" + serviceName, module);

        // some needed info for when running the service
        Locale locale = UtilHttp.getLocale(request);
        HttpSession session = request.getSession();
        GenericValue userLogin = (GenericValue) session.getAttribute("userLogin");

        // get the service model to generate context
        ModelService model = null;

        try {
            model = dctx.getModelService(serviceName);
        } catch (GenericServiceException e) {
            throw new EventHandlerException("Problems getting the service model", e);
        }

        if (model == null) {
            throw new EventHandlerException("Problems getting the service model");
        }

        if (Debug.verboseOn()) Debug.logVerbose("[Processing]: SERVICE Event", module);
        if (Debug.verboseOn()) Debug.logVerbose("[Using delegator]: " + dispatcher.getDelegator().getDelegatorName(), module);

        // get the http upload configuration
        String maxSizeStr = UtilProperties.getPropertyValue("general.properties", "http.upload.max.size", "-1");
        long maxUploadSize = -1;
        try {
            maxUploadSize = Long.parseLong(maxSizeStr);
        } catch (NumberFormatException e) {
            Debug.logError(e, "Unable to obtain the max upload size from general.properties; using default -1", module);
            maxUploadSize = -1;
        }

        // check for multipart content types which may have uploaded items
        boolean isMultiPart = FileUpload.isMultipartContent(request);
        Map multiPartMap = new HashMap();
        if (isMultiPart) {
            DiskFileUpload upload = new DiskFileUpload();
            upload.setSizeMax(maxUploadSize);

            List uploadedItems = null;
            try {
                uploadedItems = upload.parseRequest(request);
            } catch (FileUploadException e) {
                throw new EventHandlerException("Problems reading uploaded data", e);
            }
            if (uploadedItems != null) {
                Iterator i = uploadedItems.iterator();
                while (i.hasNext()) {
                    FileItem item = (FileItem) i.next();
                    String fieldName = item.getFieldName();
                    //byte[] itemBytes = item.get();

                    //Debug.log("Item Info : " + item.getName() + " / " + item.getSize() + " / " + item.getContentType(), module);
                    if (item.isFormField() || item.getSize() == 0) {
                        if (multiPartMap.containsKey(fieldName)) {
                            Object mapValue = multiPartMap.get(fieldName);
                            if (mapValue instanceof List) {
                                ((List) mapValue).add(item.getString());
                            } else if (mapValue instanceof String) {
                                List newList = new ArrayList();
                                newList.add((String) mapValue);
                                newList.add(item.getString());
                                multiPartMap.put(fieldName, newList);
                            } else {
                                Debug.logWarning("Form field found [" + fieldName + "] which was not handled!", module);
                            }
                        } else {
                            multiPartMap.put(fieldName, item.getString());
                        }
                    } else {
                        String fileName = item.getName();