® © 2009 IBM Corporation IBM Software Group Application Transformation using EGL Todd Britton IBM...

®

© 2009 IBM Corporation

IBM Software Group

Application Transformation using EGL

Todd Britton

IBM Rational

Todd Britton

IBM Rational

IBM Software Group | EGL Simplify InnovationIBM Software Group UI Modernization via EGL RUI

2

Options for “moving forward”

100%

75%

50%

25%

0%Year 1+ Year 3+ Year 5+ Year n…

The Legacy Bar(Running your Business Today)

Re-Write

Replace

Tra

nsf

orm

Equivalent

Equivalent

Equivalent

Functionality

Performance

and Stability


COBOL

COBOL

3

Evolve Past Development InvestmentsTransform your legacy applications…

HPS/AppBuilder

**

RPG

Ideal/Datacom

Enterprise

EGL

Green ScreensGreen Screens

RMEi

RMEn

RMEca

Testing, Remediation, Deployment

AutomatedConversion Tooling

z – CICS

z – IMS

z – Linux

z – zAAP

z – WAS

i – WAS

i – Native

Linux

AIX

WindowsRMErui

•Modernize UI’s

•Reduce Operating Costs

•Platform flexibility

•Easy transition for existing developers


Rational Migration Extension Philosophy

Low risk Procedural to procedural; OO to OO

Lateral move first, enhancements follow (if desired)

Frequent deliveries of running applications (Agile processes)

Short timeframes High level of automation … “factory” approach

Reasonable cost High level of automation … “factory” approach

Low cost resources where it makes sense

Easy Maintainability Leverage existing, extensive investments in current applications and developers

EGL and EGL Rich UI as targets for procedural sources

Java as target for OO sources

High Flexibility EGL allows broad deployment flexibility

4


Function Declaration

Assignment Statements

Date Formatting Function

Data access

Database Access

Array Lookup


Transition from 5250 to EGL Rich UI 1. Need a modern, “real” web user interface

Original 5250Automated Migration

to EGL/RUIEnriched UI


Demo



Doweq … … Filsfl write overlay read sflctl prcsfl …end

Original Program

sflctl …overlay …

Original layout

Do while … … Filsfl show overlay converse sflctl prcsfl …end

EGL Program


EGL RUIHandler

EGL Service

RUI Gateway

GetRelatedRows()

End

RelatedData

Automated

Migration

Automated

Migration

After migration:

•UI layout, Controller logic, and business logic

•migrated to EGL

•controller/business logic run on server

•low risk/quick results

•True “Web 2.0” UI

•driven by controller logic on server

•enrich UI using any web 2.0 widgets

•Migrated program placed in an EGL Service

•Easy extensibility



9

Doweq … … Filsfl write overlay read sflctl prcsfl …end

Original Program


Original Layout

Do while … … Filsfl show overlay converse sflctl prcsfl …end

EGL Program


EGL RUIHandler

EGL Service

RUI Gateway

Filsfl()End

Prcsfl()End

GetRelatedRows()End

…

SflctlEnd

OverlayEnd

DisplayGridEnd

…

EGL RUIHandler

EGL Service

GetRelatedRows()

End

RelatedData

Automated

Migration

Automated

Migration

On your schedule:

•Refactor …

•Move controller logic out to RUIHandler

•Create “operations” in EGL business logic

•Focus on flexibility and reusability


Migration to EGLExtra Benefit: move to SOA after migration

Service part: a generatable part containing code that will be accessed:

- from EGL code by way of a local or TCP/IP connection (EGL Service).

- from any code by way of an HTTP connection (EGL Web service).

Interface part: Used to access external services as EGL services or simply to provide

separation of concern.

At development time… Focus on the business logic Implement SOA design elements: services and interfaces Leverage existing business developers for new SOA development Ignore deployment targets/technology while coding/testing

Deploy EGL services…To any platform (Java to WAS/Tomcat, COBOL to CICS, i5/OS ) As a Web service (uses SOAP) As a private service (uses CICS ECI or TCP)

Leverage external web services… EGL Interfaces

represent external web servicesare created via import from WSDLallow the EGL developer to stay within the context of EGL programming

Refactor migrated EGL code

EGL Program

EGL Program

EGL Service

Java

IBM Software Group | EGL Simplify InnovationIBM Software Group UI Modernization via EGL RUIRational Application Transformation Briefing SheetRational Application Transformation Briefing Sheet

Customer:

Business: Agri-business ISV

Location: Orlando

Context: Requirements: Support for additional platforms (currently only support IBM i)

Can’t find RPG skills

Richer User Interfaces

Scope of problem: 5M LOC of RPG systems

Have very large and complex RPG programs

Solution: Migrating applications to EGL

Largest RPG program migrated: 27,000 lines

Building new user interfaces in EGL RUI

First application in progress; presenting this at their User Conference in March


Positioning of UI modernization offerings

Use these options when … HATS transformation

– Time is of the essence or

– Tactical, low-budget situations

– Source code is not available

HATS service wrapping and build new UI

– A UI technology other than EGL RUI has been selected to build new UI’s for existing logic or

– Source code is not available

Migration of interactive programs to EGL RUI

– Need to adopt a long term UI modernization solution or

– Want to take advantage of the latest web 2.0 widgets and capabilities or

– Need better web performance


Summary• Existing RPG or COBOL apps will exist for a long time and need a strategic new UI

• Screen scraping good for tactical web UI

• Strategic web solutions needed

• EGL and EGL RUI• Easy transition for RPG/COBOL developers

• Best Web 2.0 tooling on the market today

• Automated migration to EGL can give you a competitive advantage• Evolve RPG and COBOL assets into Web 2.0 … strategic UI modernization solution

• UI Enrichment opportunities abound

• Low risk, Quick ROI

• Easy transition for RPG and COBOL developers

• Flexible deployment targets

• Highly productive and flexible language and environment

• Migrate at your own rate and pace: interactive programs only, complete applications, or entire systems

• Next Steps• Run a pilot

• Contact Todd Britton ([email protected]) or one of our key partners for more details

® © 2009 IBM Corporation IBM Software Group Application Transformation using EGL Todd Britton IBM...

Documents

Transcript of ® © 2009 IBM Corporation IBM Software Group Application Transformation using EGL Todd Britton IBM...