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Hello World: How to create a Java-based Web application without knowing Java technology

IBM Rational Business Developer and the business-oriented Enterprise Generation Language make it simple to create complex applications

Tim McMackin, Software engineer, IBM
Author photo
Tim McMackin is a technical writer for IBM's Enterprise Generation Language in Raleigh, NC. He has a background in writing for advertising technical products and has been with IBM since 2004.

Summary:  This tutorial demonstrates how to use IBM® Rational® Business Developer to create complex applications by using the Enterprise Generation Language (EGL), a simple business-oriented language, along with powerful graphical editing tools. The simple dynamic Web site that you will build for this example includes two pages: one to display a list of records in a database and another to allow users to change the data in one of those records. You can create this Java technology-based site without knowing any Java code nor the J2EE. You can download free trial versions of the software that you will need to work through this tutorial.

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Date:  22 Aug 2008 (Published 14 Sep 2007)
Level:  Introductory PDF:  A4 and Letter (1612 KB | 70 pages)Get Adobe® Reader®

Activity:  29270 views
Comments:  

Appendix B: The updatecustomer.egl file after the section Create an update page

The code that follows in Listing 4 is the completed version of the updatecustomer.egl file. If you see any errors marked by red X symbols in the file, make sure that your code matches this code:


Listing 4. Completed code for the updatecustomer.egl file
package jsfhandlers;

import eglderbyr7.egl.data.*;
import eglderbyr7.StatusRec;
import eglderbyr7.access.CustomerLib;


handler updatecustomer type JSFHandler
  {onConstructionFunction = onConstruction, 
    onPreRenderFunction = onPreRender,
    view = "updatecustomer.jsp"} 

  customer Customer;
  status StatusRec;
  
  function onPreRender(CID int)
    customer.CustomerId = CID;
    CustomerLib.GetCustomer(customer, status);
  end

  function onConstruction()
  end
  
  function updateRecord()
    CustomerLib.UpdateCustomer(customer, status);
    forward to "allcustomers";
  end

End

Return to Create an update page.

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