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package com.companyname.ofbizdemo.services;
import java.util.Map;

import org.apache.ofbiz.base.util.Debug;
import org.apache.ofbiz.entity.Delegator;
import org.apache.ofbiz.entity.GenericEntityException;
import org.apache.ofbiz.entity.GenericValue;
import org.apache.ofbiz.service.DispatchContext;
import org.apache.ofbiz.service.ServiceUtil;

public class OfbizDemoServices {

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

    public static Map<String, Object> createOfbizDemo(DispatchContext dctx, Map<String, ? extends Object> context) {
        Map<String, Object> result = ServiceUtil.returnSuccess();
        Delegator delegator = dctx.getDelegator();
        try {
            GenericValue ofbizDemo = delegator.makeValue("OfbizDemo");
            // Auto generating next sequence of ofbizDemoId primary key
            ofbizDemo.setNextSeqId();
            // Setting up all non primary key field values from context map
            ofbizDemo.setNonPKFields(context);
            // Creating record in database for OfbizDemo entity for prepared value
            ofbizDemo = delegator.create(ofbizDemo);
            result.put("ofbizDemoId", ofbizDemo.getString("ofbizDemoId"));
            Debug.log("==========This is my first Java Service implementation in Apache OFBiz. OfbizDemo record created successfully with ofbizDemoId:" + ofbizDemo.getString("ofbizDemoId"));
        } catch (GenericEntityException e) {
            Debug.logError(e, moduleMODULE);
            return ServiceUtil.returnError("Error in creating record in OfbizDemo entity ........" + moduleMODULE);
        }
        return result;
    }
} 

package com.companyname.ofbizdemo.events;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.ofbiz.base.util.Debug;
import org.apache.ofbiz.base.util.UtilMisc;
import org.apache.ofbiz.base.util.UtilValidate;
import org.apache.ofbiz.entity.Delegator;
import org.apache.ofbiz.entity.GenericValue;
import org.apache.ofbiz.service.GenericServiceException;
import org.apache.ofbiz.service.LocalDispatcher;

public class OfbizDemoEvents {

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

    public static String createOfbizDemoEvent(HttpServletRequest request, HttpServletResponse response) {
        Delegator delegator = (Delegator) request.getAttribute("delegator");
        LocalDispatcher dispatcher = (LocalDispatcher) request.getAttribute("dispatcher");
        GenericValue userLogin = (GenericValue) request.getSession().getAttribute("userLogin");

        String ofbizDemoTypeId = request.getParameter("ofbizDemoTypeId");
        String firstName = request.getParameter("firstName");
        String lastName = request.getParameter("lastName");

        if (UtilValidate.isEmpty(firstName) || UtilValidate.isEmpty(lastName)) {
            String errMsg = "First Name and Last Name are required fields on the form and can't be empty.";
            request.setAttribute("_ERROR_MESSAGE_", errMsg);
            return "error";
        }
        String comments = request.getParameter("comments");

        try {
            Debug.logInfo("=======Creating OfbizDemo record in event using service createOfbizDemoByGroovyService=========", moduleMODULE);
            dispatcher.runSync("createOfbizDemoByGroovyService", UtilMisc.toMap("ofbizDemoTypeId", ofbizDemoTypeId,
                    "firstName", firstName, "lastName", lastName, "comments", comments, "userLogin", userLogin));
        } catch (GenericServiceException e) {
            String errMsg = "Unable to create new records in OfbizDemo entity: " + e.toString();
            request.setAttribute("_ERROR_MESSAGE_", errMsg);
            return "error";
        }
        request.setAttribute("_EVENT_MESSAGE_", "OFBiz Demo created succesfully.");
        return "success";
    }
}