the egl workbench (eclipse)

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IBM Software Group

© 2006 IBM Corporation

The EGL Workbench (Eclipse)

This section introduces you to the Eclipse IDE (integrated development environment). Eclipse is the EGL workbench and project organizer. Learning how to use it, navigate, and develop within it is a key to success, with EGL.

2Last update: 12/04/2007

UNIT

EGL and the Workbench – terms and concepts

A Workbench Walk-Through

Creating an EGL “HelloWorld” Application

Topics:

RBD WorkbenchRBD Workbench


What is the RBD Workbench?

The RBD Workbench is the software that enables you to create, test, modify, run and deploy your EGL applications

It organizes and maintains your software development resources

It provides access to tools like editors, design tools, compilers and folders for managing your application’s contents

OrganizerOrganizer

ToolsTools

Edit and design facilityEdit and design facility

NOTENOTE – Several of the screen captures taken of the Workbench used WebSphere Application Server. If you are using Tomcat, the Project Explorer will look different. We will explain all relevant differences at the appropriate time during the course.


How do I develop with the RBD Workbench?

You will work with a variety of resources: EGL code, Web pages, Graphic images, Data files. The Workbench allows most of the resources associated with a project to be stored in a workspace – which is the highest-level folder that contains everything you can access during a development session.

Your Workbench session begins with the opening of a Workspace. Everything you have access to is inside this Workspace.

Workspace resources are organized into - Project(s)

- Folders

- Files

Project

Folders

Files

Workspace


What is in a Project?

Workspace projectsWorkspace projects organize and manage related application resources. They can be designed along lines of:

Batch – or – Online applications Different business applications (Accounts Payable, Inventory,

Claims, Part Assembly, etc.) Common (shared) projects consisting of data and record

definitions that can be reused

Projects also contain configuration dataconfiguration data, such as build files** and generation optionsgeneration options for EGL Java and/or COBOL generation

Projects may be further divided into foldersfolders

EGL “Web” projects contain the following high-level folders:\EGLSource\\Java Resources: src\\WebContent\

- See slide NOTESNOTES and the Help topic: Contents of an EGL Application

EGLSource

Files

WebPages

andWeb AppResource

Folders

JavaSource

Files


What is in \EGLSource\

\EGLSource\\EGLSource\ is the default folder that is the highest level folder under which all of your EGL resources are organized.

These EGL resources include EGL: Packages Files

Programs Libraries Services JSFHandlers EGL build-files …

Typically you will create sub-folders under \EGLSource\ to manage your EGL resources

We will define what is in all these EGL resources a bit later in this course

For now, it is enough to know that all EGL files end with the extension: .egl.egl

- See the Help topic: EGL Projects, Packages and Files


What is in Java Resources: src

\src\\src\ is the default highest level folder that contains all of the generated Java, for each and every successfully compiled (or in EGL terms, “generated”) EGL resource

You will rarely if ever need to actually open or even view the contents of \\src\src\

But the folder structure of \src\ will match \EGLSource\ one-for-one

Your generated java files will end with a .java.java extension


What is in \WebContent\

\WebContent\\WebContent\ is the default highest-level folder under which all of your web resources will be organized, including:

Application Server reserved folders: META-INF WEB-INF

Web Pages (*.jsp) and web page resources:\theme\ - Graphics (*.gif, *.jpg)

\theme\ - Template pages (*.htpl)

\theme\ - Cascading Style Sheets (*.css)

Note that your installed EGLWeb project might have a few additional folders and files – such as an \images\ directory, that we’ve supplied, containing graphics files you’ll use throughout the course

And if you’re not familiar with the above types of web files don’t worry. We’ll be covering them later on in the course

Content


Terms and Concepts – .EAR File – Simplified J2EE Deployment – for WASWAS Users

An EAR (EEnterprise ARARchive) file contains a J2EE application, which is a collection of J2EE modules. The modules contain Java generated from EGL. Because individual J2EE modules are contained within the EAR, they can easily be managed and deployed as a whole to WebSphere.

An EAR also has a Deployment Descriptor file which describes how it should be deployed to WebSphere. In addition, each module within the EAR has its own Deployment Descriptor.

An EAR file is similar to an iSeries “savefile for i” – or to a System z “load library” – which are files deployed on mainframes that also contain individual “modules”

EGLWebEAREGLWebEAR

otherother.WAR files.WAR files

DeploymentDeploymentDescriptorDescriptor

Utility Java ClassesUtility Java Classes.JAR files.JAR files

EGLWebEGLWeb.WAR file.WAR file(Modules)(Modules)


Where (under what folder and/or sub-folder) in your project would you look for the following files?

allcustomers.jsp _______________

allcustomers.java _______________

allcustomers.egl _______________

ibm.gif _______________

stylesheet.css _______________

True/False – all EGL source files (each and every one) will: a. End with an extension of .egl b. Be organized and exist under the \EGLSource\ folder – or a sub-folder in your project

Note – if you do not know what these file types are do not worry, we will be covering them and their use a bit later in the course.

Paper/Pencil Review Questions


Workbench Views

Workbench tools with visual content are portrayed in “views”

Views are windows which show relevant information about whatever you are currently looking at or working on.

Development tasks usually require many different views.

Programming: Code editing,

navigators, testing environment, debugging,…

Page design: Page layout graphic

editing, specifying page control properties site navigation/design

Page DataView

Content AreaView

PaletteView

ConsoleView

ProjectExplorer

View

NOTENOTE – Several of the screen captures taken of the Workbench used WebSphere Application Server. If you are using Tomcat, the Project Explorer will look different. We will explain all relevant differences at the appropriate time during the course.


Important Views

Out of the dozens of Workbench views available to assist you with your development, there are an essential nine:

1. Project Explorer

2. Content Area

3. Page Data

4. Palette

5. Properties

6. Console

7. Servers

8. Problems

9. Outline


Project Explorer – or Project Explorer ViewOrganizes your project…and…allows you to:

Create new resources: EGL programs, services, etc. Web pages and other files

Open files into the Content Area Manipulate files:

Delete, Move and Rename Run pages Debug EGL programs Generate (compile) Refactor

When “A” is changed change related “B” resources

Set project-level properties

By Right-clicking over a resource in the Project Explorer you access a “Context Menu” that provides options

By double-clicking over a resource in the Project Explorer you open that resource in the Content Area view

Right-clickContextMenu


Content Area

Double-clicking a file in Project Explorer opens it in the Content Area Content Area

The appropriate editor for that file-type will also open

Here’s Page Designer

Page Designer is an RBD editor that is used for laying out and creating your pages from JSF

(graphical) components.

Here’s the EGL editor. You might not be able to tell in black & white but the source is “colorized”:

• Keywords in maroon/bold• Identifiers (variables/function names) in black• Literals (within in “double-quotes”) in blue• Comments in green (not shown)


JSFHandler

Page Data View Page Data is one of the views you get

if you click on a .JSP file. It is a view of the JSF Handler JSF Handler (EGL)(EGL) resources that you can drag and drop onto your web page

DataData – which become labels and input/output controls

ActionsActions – which become Submit Buttons

ServicesServices – which become entire forms, based on their parameters and functions

Services

EGL FunctionEGL Variables

Drag ‘n Drop from Page Data

onto your Web Page


Palette View

Provides a drag & drag & dropdrop way to add controls to your U.I. (Web page or Rich Client or Text User Interface form)

Drag & Drop functionality of Page Designer

If the If the PalettePalette View is not available by default, open it from the View is not available by default, open it from the menu:menu: Window Show View Other… General (expand) Palette

If the If the PalettePalette View is not available by default, open it from the View is not available by default, open it from the menu:menu: Window Show View Other… General (expand) Palette


Properties View

Allows you to specify the behavior and characteristics of a U.I. control declaratively (without having to code at the source API level). One of the primary development constructs is that you:

1. Drag and drop a resource2. Customize its properties

Properties (View) of the Postalcode Input Text Field’s JSF attributes


Servers View – WebSphere Application Server

Allows you to start and stop the application server in which you run and debug your application. And to publish (re-deploy) your application.

Context Menu for the Servers view


Console View

Allows you to see a trace of the run-time events and messages to “system out” that happen as your application executes on the server.

ApplicationServer

Messages

RunningWebPage


Problems View Allows you to see syntax or structural problems in your application.

Note, by double-clicking on a problem the file in question is opened in the Content Area, and your mouse is positioned to the line (and even characters) in question.

Hyper-linkedProblem Description

in the Problems view

Source filecontaining

the problem


Outline View

Provides a consolidated, click-able list of your programs:

Imports Functions Variables Other EGL resources

Especially useful for: Navigating throughout large

source files Large, complex web pages Top-Down code analysis

Learning – or getting the giste of some code quickly


Working With Views You can maximizemaximize a view by

double-clicking in the middle of the View Tab (and re-size the view back, by doing the same)

You can CloseClose a view (inadvertently or on purpose) – by clicking the X

You can Re-open a viewRe-open a view by pulling down the Window menu, and selecting: Show Show View >View >


Workbench Perspectives Perspectives organize views and other tools into groupings designed for particular roles, oriented to specific tasks

There are only a few perspectives you will use:

Web Perspective Used for creating and

testing Web applications

EGL Perspective Used for creating and

testing batch and Text User Interface applications

Debug Perspective Used to debug

applications

Data Perspective Used to view relational

data and run SQL interactively Workbench in the Web Perspective

*** *** Different Perspectives offer different Views of your development resources ***

That is, the views available will change, and even change position in the IDE depending on your current Perspective.


Working With Perspectives

There are only a few things you will do with Perspectives (besides use them)

OpenOpen Perspective From your current workbench perspective, open a new perspective with its

default views and tools

ResetReset Perspective Return to the RBD installation defaults, for a perspective

CloseClose Perspective Close a perspective if no longer needed for your work at the moment

CustomizeCustomize and savesave a perspective When you have used the Workbench a lot, you may want to create your own

custom perspectives, with customized views and tools, etc.

All in-use perspectives can be switched back and forth from an icon at the top-right corner of your Workbench which shows the perspectives


Workspace Preferences – Customizing the Workbench

The Preferences dialog (under the Windows menu) allows you to customize your workspace development environment.

From the main Preferences dialog you should check:

EGL with BIRT report support

EGL support with JSF Component Interfaces

Other preferences you can customize:

EditorEditor You can change the editor’s

appearance Page DesignerPage Designer

Specify whether to delete associated files

SQL Database ConnectionsSQL Database Connections Specify a connection to an

external database (DB2, IDS, etc.) for SQLRetrieve

Click ApplyClick Apply


Workspace Preferences – Customizing the Workbench – Modify SQL Preferences

The SQL Preferences allow you to customize how the RBD tooling generates SQL resources

From the SQLSQL Preferences dialog check:

Change to lower case and capitalize first letter after underscore

Remove underscores



Workspace Preferences Lab – EGL Editor

Editor PreferencesEditor Preferences You can change the editor’s appearance,

and how it treats and displays your source statements

UNUN-check:-check: Annotate errors as you type

Optionally – feel free to try out other editor preferences



OPTIONALOPTIONAL Workspace Preferences Lab – EGL Editor Templates

Statement templates allow you to customize the default Intelli-sense (accessed via Ctrl/Spacebar - Content Assist) development. From EGL Template preferences you can: Add new statement/

templates Edit existing templates Remove un-wanted

templates Export all of your templates

for sharing with a group Import a set of templates

Optional Workshop Using the slide and

Preference, create a new template as shown here (you can copy/paste the pattern code from the Notes section of this slide).

To use the new template, from inside an EGL source file (within a function)

Type if Press Ctrl/Spacebar


OPTIONALOPTIONAL Workspace Preferences Lab – EGL Editor Templates/Modify Defaults

Besides adding new statements, you may want to modify the existing Editor Templates: Change the defaults Add new Properties

Optional Workshop Select the handler egl-jsf handler egl-jsf

PageDesigner Page Code PageDesigner Page Code generationgeneration template

Click Edit… Add the EGL handler property shown

Click OK To save your edits

Click OK To save your Template preferences

cancelOnPageTransition=yes,cancelOnPageTransition=yes,


Really OptionalReally Optional Workspace Preferences Lab – EGL Editor

Optional/Challenge Workshop. You can add a new editor to work with your EGL source files by doing the following:

1. From Preferences > General > Editors, click File AssociationsFile Associations

2. From the File types: list, select *.egl

3. From Associated editors: 1. Click Add…

2. From External Programs – select from the list …or…

3. Browse to your own custom editor and select it (example shown is WordPad)

4. Click OK5. Click OK

To use the new editor, from Project Explorer, Right-Click Select Open With


Help

There is a robust help system with documentation and examples available in many categories:

Keyword search

Category search

Web Resources Points you to the EGL forum

and home page on DeveloperWorks

Tutorials Gallery Contains additional in-the-box

education samples

Samples Gallery Contains working, sample

applications

Cheat Sheets Contains step-by-step “how-

to” instructions


PC Graphical/Mouse-Driven Development Skills

You will do two things with Workbench:

1. Type EGL statements (business logic) using the EGL Editor, and sometimes type other short properties in Workbench dialogs and fields. This is no different from programming in any other toolset or language

2. Navigate through the Workbench, and do “drag & drop” development (with your mouse). If you’re new to drag & drop development here’s a quick lesson.

Left-mouse buttonSelect something - Click a field - Click a drawer in the Palette - Select a file in the Content Area

Scroll up and down/Right and left

Double-click a resource in Project Explorer to open it in the Content Area

Open an RBD menu (at the top)

By selecting (Left-mouse) and holding, you drag and drop a resource: - Drag an EGL variable onto a page - Drag JSF Component onto a page

Right-mouse button

Open a “context menu”

- From a Page in the Content Area - Edit Page Code – bring up the EGL for the page - Run a page

- Project Explorer – the context menu allows you to - Create a new resource - Delete/move - Generate (compile) a resource - Run a page on the Server


Review

1. Content Area ___ The highest level folder that contains all of project folders you can work with. You choose this right after launching RBD

2. Page Data ___ Where you customize a web page Control’s appearance and behavior

3. Project Explorer ___ The area in which you edit files and use Page Designer to layout and create web pages.

4. Perspective ___ A perspective that displays and organizes views that are optimal for doing web application development with EGL

5. Servers View ___ A View that allows you to select and open files, delete them, create new files, generate (“compile”) and run web pages

6. Console View ___ The View that shows your JSF Handler’s declared variables, functions and services (available for direct drag & drop operations on a page)

7. Preferences ___ The View that contains drawers of visual components to work with in Page Designer (like HTML, EGL and JSF Components)

8. Problems View ___ An organized collection of Views

9. Properties View ___ The area of the Workbench where you customize the workspace’s behavior, setup

10. Palette ___ The View that allows you to stop and start your Application Server

11. Web Perspective ___ The view that contains all of the syntactical errors in your EGL source, and configuration errors for your project

12. Workspace ___ The view that shows application server run-time messages

Match the Following Terms and RBD Vocabulary


Review

Answer the following questions:

1. Under what menu option, can you access windows to change perspectives and open Views, modify your Workspace preferences?

2. From the product help, search on: mathlib sqrtmathlib sqrt Check out both the mathlib and the function

3. Questions on the Palette View - What are the two options in the EGL drawer in the Palette? - Under what Palette drawer can you find a Horizontal Rule? - Under what Palette drawer can you find a Command – Button?

4. From the Properties view, what is the Id: property associated with this field?

5. From what View (and how) do you open a file (i.e. how do you load a file into) the Content Area for editing or browsing?

6. List the steps to Run a .JSP page, on the server?

7. What View exposes (shows) EGL variables and functions from a JSFHandler, and allows you to drag them onto the Content Area to create JSF controls and fields?

8. By the way, what isis an EGL JSFHandler? (Search the help on: JSFHandler Part – and select, Elements of a Web Application)


Lab Assignment – Workbench “Test Drive” – 1 of 2

Do the following:

1.1. Launch RBDLaunch RBD and select your workspace (the one you set up and configured in Chapter 0)

2.2. FindFind (by opening folders in Project Explorer and opening files in the Content Area) the following resources (files):

allcustomers.java – the Java generated by RBD for the allcustomers page allcustomers.egl – the EGL JSF Handler for the allcustomers web page allcustomers.jsp – the allcustomers web page stylesheet.css – the default cascading style sheet for this project – See Notes EGLWeb.eglbld – the default “build file” for this project – See Notes

Make the files in the Content AreaContent Area full-screen, then size them back down

Close all of the files in the Content AreaContent Area

• Find and close the ConsoleConsole view then re-open the Console view

• From Project ExplorerProject Explorer – explore your project (Open and close several of the folders under: EGLSource and WebContent)


Lab Assignment – Workbench “Test Drive” – 2 of 2Do a bit more test driving:

5. From the Palette view – find (locate) the following (Note – you’ll need open a .JSP page in the Content Area, in order to see the Palette view)

• Enhanced Faces Components: Enhanced Faces Components: • Command Button, Input text, Image,

• An HTMLHTML: Horizontal Rule, Table, Image

• An EGLEGL variable

6. From the WindowWindow menu, open the DebugDebug Perspective

• Using the icons (top right hand corner of Workbench) switch from the Debug to the Web Perspective

• Close the Debug perspective

7. Reset your “current” (should be Web) Perspective

8. From the Servers view, start your application server

9. From Project ExplorerProject Explorer, Run allcustomers.jspRun allcustomers.jsp on the server

10.From HelpHelp:1. Search on the EGL topic: DataItem

2. From Tutorials Gallery/Tours run the Enterprise Generation Language tour

3. Find and open the EGL Cheat Sheets category. View one or more (time permitting)

Lab


UNIT

EGL and the Workbench terms and concepts

A Workbench Walk-Through

Creating an EGL “HelloWorld” ApplicationCreating an EGL “HelloWorld” Application

Topics:

RBD WorkbenchRBD Workbench


The Pages (you will create)

Following the detailed steps in this lab, you will build these two simple Web pages with EGL and the RBD tools.


The Workflow Process – From 10,000 Feet The steps you will follow to create these pages consist of:

1. Launch RBD and select your Workspace2. Create a new web page from a pre-built template3. Customize the page’s default layout4. Edit the EGL code that enables the business logic for the page5. Drag & drop EGL variables on the page to create new JSF Components6. Run (test) the page on the server

Now begin the lab from the detailed instructions starting on the next slide…


Lab – Launch RBD and select your Workspace

(If RBD is not already up and running)

From the Windows start menu launch RBD

From the initial prompt, specify or browse to and select your Workspace

Your EGLWeb project should open


Create a new Web Page Using a Page Template From Project Explorer Right clickRight click

over \WebContent\ and select: New

Web Page

Name the page: hello1hello1.jsp.jsp From: Sample TemplatesSample Templates Family A (no navigation)Family A (no navigation)

Select A_gray.htplA_gray.htpl

Click Finish Finish


In the Content Area: Modify the default page header text and add a few line breaks (using the Enter key)

After you’ve completed the above, Right-click over the Web Page,

…and select Edit Page CodeEdit Page Code

Customize the hello1.jsp Web Page


When you create a new .JSP page with RBD, it automatically creates a JSFHandler for the page to allow you to call services and code your business logic.

Using the EGL Editor, code the following:code the following:

A stringstring variable named field1field1

A statement that assigns a “literal” literal” to field1field1

A new EGL function that forwards the field1 value to a new page (you will create the hello2.jsp page in the next step of this lab)

Press:Press: Ctrl+Shift+F Ctrl+Shift+F ( simultaneously )

This will format your source as shown in the screen capture

To save your EGL statements, To save your EGL statements, eithereither:: Click the Save fileSave file icon in the top left section of the menu Click your mouse inside the JSFHandler code, and press: Ctrl+SCtrl+S

Add EGL Statements to the JSFHandler

Don’tDon’t change this(even if it doesn’t match)

Note the semi-colons ; that end your new EGL statements;

Note the semi-colons ; that end your new EGL statements;


Return to Page Designer for: hello1.jsphello1.jsp(hint: Click the hello1.jsphello1.jsp tab in the Content Area)

(From the Page Data view)

Expand the Data folderSelect: field1 - string

Left-click and hold (the mouse button down)Drag and Drop it

…onto the page next to a line break

Add an EGL Field to the hello1.jsp Page – 1 of 3

Note: When you drag and drop Page Data variables onto hello1.jsp, the RBD tooling automatically generates all of the Java/J2EE APIs needed to render Server-Side EGL data in the browser as HTML labels and values in the browser.

Note: When you drag and drop Page Data variables onto hello1.jsp, the RBD tooling automatically generates all of the Java/J2EE APIs needed to render Server-Side EGL data in the browser as HTML labels and values in the browser.


(From Insert Control) create input/output fields by specifying:

Updating an existing recordUpdating an existing record

Click the Options…Options… button, (From Options) unun-check the Delete

button

Click OKOK

…then click FinishFinish

Add an EGL Field to the hello1.jsp Page – 2 of 3


(From Page Data)

Expand the Actions folderSelect (Left-click, hold) and drag and drop the fwd()

function on top ofon top of the Submit Button

Bind an EGL Function to the Submit Button on the .JSP Page – 3 of 3


1. Right-click1. Right-click over the page and select Run on Server…Run on Server…

2. Save2. Save any un-saved resources3. If you are using Tomcat

3a. Make sure that: Update context rootUpdate context root… is checked – and…Click: FinishFinish

Run the .JSP Page

Note – if your page does Note – if your page does notnot display, please go to the display, please go to the next slide to diagnosenext slide to diagnose


If your page does not display and you are not using Tomcat, or if you get other Exception errors when trying to run: hello1.jsp, please:

Double-check to ensure there are no syntax errors in hello1.egl ( no X’s )

If there are syntax errors, correct them and try again (mouse-over the X’s to see what’s wrong)

If there are no syntax errors, and you’re using WebSphere, and your page doesn’t display, please ask your instructor for assistance

If you are using Tomcat, as your Application Server, And if, after trying to Run on server – you get an error

like the following

Restart the Tomcat server:Restart the Tomcat server:(From the ServersServers tab) Click the Restart the server icon

Then try running the: hello1.jsphello1.jsp page on the server again.

What if I Get a Server Error When I Run My Page?


Lab – Part 2 – Create hello2.jsp Page and the hello2.egl Code

From the EGL editor, add the following:

A stringstring variable named: field2field2Add a parameter to: onConstruction(field1 stringstring)

Add this assignment statement

Add this new Function

- Press Ctrl+Shift+FCtrl+Shift+F to format your code

- Save your work (press Ctrl/SCtrl/S – or click the Save icon)

(From Project Explorer) Right-click over \WebContent\ \WebContent\ and create a new web page – named: hello2.jsphello2.jsp

• Select the same template for the new page (A_gray)

(Working with hello2.jsp in the Content Area) Customize the page’s default text

Right-click over the page and select: Edit Page CodeEdit Page Code


Add an EGL Field and Function to the .JSP Page

1. (From Page Data) Select (left-click, hold), Drag & Drop the field2 - string variable on the page• Configure the controls produced – and

create an output (read-only) field:

2. (From Page Data) Expand the Actions folder Select (left-click, hold), Drag & Drop the

returnToHello1() EGL function on the page. This will create a Submit Button which fires off a call

to your EGL business logic inside the returnToHello1 function, when the user clicks it at run-time

Page Data ViewA graphical window into

the variables and functions inside the EGL JSF Handler

for this .JSP page


Run hello1.jsp – Test Your Work

(From Project Explorer) Right-click over, and select run run hello1.jsphello1.jsp on the server If you are using Tomcat make sure that: Update context rootUpdate context root… is checked – and…

Click: Finish Finish (at Select Tasks) Note that you will do this every timeevery time you run a page using Tomcat


(OPTIONALOPTIONAL) Lab3 Create an EGL Batch Program

(From Project Explorer) Right-click over EGLSource, and select:

New > Program

From the New EGL Program part wizard, specify: Package:

kbprogramskbprograms EGL source file name:

kbprogramkbprogram

Click Click FFinishinish


Lab3 – continued – Code the Batch EGL ProgramThe tooling will create a skeleton EGL batch program. Edit the

program, and add the following statements:

Four variable declarations

Assignment statements

Invoke a function

Add a function that adds that calculates simple interest

// Comments are optional

(FYI) The slide ***Notes contain finished code for the above.


Lab3 – continued – Save and Debug the Batch Program

1. Save your edits by clicking the Save icon on the toolbar

2. Add a breakpoint to your EGL program, by double-clicking in theEditor’s gray left-hand border

3. (from Project Explorer) Right-click over kbprogram.egl Select: Debug EGL ProgramDebug EGL Program

Click YesYes – at Confirm Perspective Switch

*** See Notes*** See Notes, if you’re using the Vista O.S.


Lab3 – continued – Modify the Values and Step (F5) Through the Code Double-click the

values in the Variables View to over-ride your assignment statements (note – click right on top of the variable Values)

Press F5F5 to step through your EGL statements – one line at a time. Note that as the values change the Variables view updates.

When you are finished, from the top right corner Close the Debug Perspective

*** See *** See Slide NotesSlide Notes

*** See *** See Slide NotesSlide Notes


Extend This Batch Program Workshop (More Optional Lab Work)

Time permitting: Return to the Web Perspective:

1. Add the new EGL functions shown in this screen capture

2. From inside the main()main() function invoke the new functions

3. Save your edits – and clean up any EGL syntax errors - which will appear as a red

4. Debug (step through) your new code. Between function invocations, consider zeroing out (resetting) the result variable values for each computation:

- principal- principal

- interest- interest

- nbrYears- nbrYears

5. Close the Debug Perspective, and return to the Web Perspective

*** See Slide Notes for *** See Slide Notes for the finished codethe finished code

*** See Slide Notes for *** See Slide Notes for the finished codethe finished code


Optional Lab4 – Working With EGL Code Formatter – 1 of 2You have already seen that Ctrl+Shift+FCtrl+Shift+F will format your code,

when you are editing inside a file. But there are several other things you should know about this tooling feature:

1. You can format code for: Files All of the EGL files in a Package

Right-click Right-click over the file or package, and selecting FormatFormat This allows you to apply the source code formatting rules to

more than one file, in one operation

Feel free to try this on kbprogram.egl All of the files in the jsfhandlersjsfhandlers folder


Optional Lab4 – Working With EGL Code Formatter – 2 of 2To see or change the Formatter Rules

From: PreferencesPreferences

EGL EGL

EditorEditor

FormatterFormatter

Click: Show…Show…To view the current rules

New…New…To define custom EGL code formatting rules

Note that you could (when finished with new rules)

Export them to your fellow project team members


Optional Optional Lab5 - Create an Online Calculator

If time permits, create the following new, EGL web page

Using this EGL JSFHandler logic

And these controls – dragged from Page Data:

Challenge LabChallenge Lab - Create the rest of the basic functions (and web page buttons) for your calculator: Subtract/Multiply/Divide


OptionalOptional Lab6 – Create a Typical Login Page

Create the following new web page Name: hello3.jsphello3.jsp

Layout

EGL Code

Notes: Don’t worry about comments

//I am an EGL comment

Don’t worry about blank lines If you get syntax errors

(Red X’s appear) Mouse-over them to read what’s wrong


Now that you have completed this unit, you should have: Navigated the eclipse IDE, Opened project folders and files Set project properties Defined and used the following eclipse views and perspectives:

Views– Content Area

– Project Explorer

– Page Data

– Palette

– Console

– Servers

– Capabilities

Perspectives– Web

– Debug

Unit Summary

the egl workbench (eclipse)

Documents