Notes on Software Development, Platform and Modern is at Ion

8/14/2019 Notes on Software Development, Platform and Modern is at Ion

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Notes on SoftwareDevelopment, Platformand Modernisation

Alan McSweeney


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November 26, 2009 2

Objectives

Provide information on the advantages anddisadvantages of .NET and Java development andoperational platforms

Provide information on approaches to softwaredevelopment

Provide information on approaches to refresh of existingsoftware

Focus on banking systems and IBM platforms


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November 26, 2009 3

Agenda

Context of application development

Comparison of .Net and Java Application design and delivery landscape Software modernisation


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November 26, 2009 4

View of Application Development and Deployment

Decision is wider than just selecting a developmentplatform

Need to take account of other factors: Application lifecycle from application design, development,

testing, deployment and operation Refresh/modernisation of existing applications Other initiatives such as SOA Existing application development and deployment standards

and approaches Consider an integrated approach to application

development and deployment


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November 26, 2009 5

High Level View of Application and System Landscape

IT Assets

AccountabilityReduce Cost New Channels VisibilityNew Services

Customer ServiceShareholder Value Governance BusinessDrivers

BusinessRequirements

BetterInformation

insight

Support BusinessRequirements

Faster

EfficientDelivery Of

New Services

Automation of Existing

Processes

Reusable,Standard Services

Standard Integrationof Services

BusinessProcesses

ServicesServicesServicesServices

BusinessService

BusinessService

BusinessService

BusinessService

Services

BusinessService

Business UnitsLegacy SystemsWeb Sites Databases Core Applications


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November 26, 2009 6

View of Long-Term Application Landscape

IT Assets

Reusable,Standard Services

Standard Integrationof Services

BusinessProcesses

ServicesServicesServicesServices

BusinessService

BusinessService

BusinessService

BusinessService

Services

BusinessServiceService

OrientedArchitecture

IT Assets

Business UnitsLegacy SystemsWeb Sites Databases Core Applications

BusinessRequirements

BetterInformation

insight

Support BusinessRequirements

Faster

EfficientDelivery Of

New Services

Automation of Existing

Processes

BusinessProcess

Management

AccountabilityReduce Cost New Channels VisibilityNew Services

Customer ServiceShareholder Value GovernanceBusinessDrivers

BusinessProcess

Improvement


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November 26, 2009 7

Java and .NET Comparison Notes


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November 26, 2009 8

Java and .NET Comparison Notes

Both multi-tiered, similar computing technologies

Both support standards Both offer different tools and ways to achieve the same

goal A lot of parallelism can be seen Very difficult to compare and qualify the comparison

because each has its own advantages and disadvantages No right answer Depends on business and organisation context


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November 26, 2009 9

J2EE Application Architecture


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November 26, 2009 10

.NET Application Architecture


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Overview of J2EE and .NET

Visual Studio.NetRational, Eclipse, JBuilder etc.Tools support

Multiple Languages JAVALanguage support

CLR JREInterpreter

WindowsVariety of Operating systemsPortability

CLR (Common LanguageRuntime)

JVM (Java Virtual Machine)Execution Engine

ADO.NET JDBCDatabase Connectivity

.Net Managed ComponentsEJBsMiddle-Tier Components

ASP.NET JSPsWeb Pages and HTML

MicrosoftOracle, IBM, Oracle, Apache andmany others

Middleware Vendors

ProductStandardType of Technology

.NET.NET.NET.NET J2EE J2EE J2EE J2EEFEATUREFEATUREFEATUREFEATURE


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Detail of J2EE and .NET

Visual Studio .Net, the single IDE forbuilding .Net windows, webapplications, or XML Web services

Java features a wide variety of tools Rational, Eclipse, JBuilder, JDeveloperetc

Tools support

It is language independent and can useany language once a mapping existsfrom that language to IL

Only Java is supportedLanguage support

.Net only supports the Windowsplatform

J2EE offers complete cross-platformportability

Portability

The CLR environment executes .Net'sMicrosoft Intermediate Language code

Java source code compiles intomachine-independent byte code, whichthe JVM interprets at runtime

Execution Engine

ADO.NET JDBCDatabase Connectivity

A variety of data sources can beaccessed by developers through .Net'sADO.Net classes

Two main types of entity beans are usedto model persistent data which arecontainer-managed and bean-managed

Data Access

.Net remoting allows calls to remoteobjects distributed across applicationdomains, processes, and machineboundaries

JNDI finds server-side components suchas EJBs or JMS queues

Calling Remote Objects

Manual transaction management orautomated through CLR

Manual transaction management orautomated through containers

Transactions

ASP.NET under Internet InformationServer (IIS)

JSPs and ServletsHTML generation

.NET.NET.NET.NET J2EE J2EE J2EE J2EEFEATUREFEATUREFEATUREFEATURE


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Generic Framework for Web Applications

Workflow EngineWorkflow EngineWorkflow EngineWorkflow Engine

WebWebWebWeb----based andbased andbased andbased and ----related Protocols (HTTP, SMTP, ...)related Protocols (HTTP, SMTP, ...)related Protocols (HTTP, SMTP, ...)related Protocols (HTTP, SMTP, ...)

Service Description, Discovery, Integration (UDDI)Service Description, Discovery, Integration (UDDI)Service Description, Discovery, Integration (UDDI)Service Description, Discovery, Integration (UDDI)

Service Description (WSDL)Service Description (WSDL)Service Description (WSDL)Service Description (WSDL)

Service Context (Who, Where, When, Why, ....)Service Context (Who, Where, When, Why, ....)Service Context (Who, Where, When, Why, ....)Service Context (Who, Where, When, Why, ....)

Virtual MachineVirtual MachineVirtual MachineVirtual Machine

Micro/Macro ServicesMicro/Macro ServicesMicro/Macro ServicesMicro/Macro Services

IntegrationIntegrationIntegrationIntegrationLayerLayerLayerLayer

LegacyLegacyLegacyLegacy

Backend ServerBackend ServerBackend ServerBackend Server

MainframeMainframeMainframeMainframeFrontendFrontendFrontendFrontend

LayerLayerLayerLayer(Web Server)(Web Server)(Web Server)(Web Server)

Web Service User/ProviderWeb Service User/ProviderWeb Service User/ProviderWeb Service User/Provider

Core Services (Calendar, Preferences, Transactions, ...)Core Services (Calendar, Preferences, Transactions, ...)Core Services (Calendar, Preferences, Transactions, ...)Core Services (Calendar, Preferences, Transactions, ...)

Core Elements of Web Application Framework

ClientsClientsClientsClients


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.Net Implementation of Framework

.NET Devices.NET Devices.NET Devices.NET Devices

.NET Servers.NET Servers.NET Servers.NET ServersSQL Server, Biztalk, Commerce, Exchange, Mobile Information,

Host Integration, Application Center

.NET Foundation Services.NET Foundation Services.NET Foundation Services.NET Foundation ServicesPassport, Calendar, Directory & Search, Notification & Messaging,

Personalization, Web-Store/XML, Dynamic Delivery of Software and Services

Common Language RuntimeCommon Language RuntimeCommon Language RuntimeCommon Language Runtime(Memory Management, Common Type System, Lifecycle Monitor)

.NET Framework & Tools.NET Framework & Tools.NET Framework & Tools.NET Framework & Tools

Base ClassesBase ClassesBase ClassesBase Classes(ADO.NET, XML, Threading, IO, ....)

ASP.NETASP.NETASP.NETASP.NET(Web Services, Web Forms,ASP.NET ApplicationServices)

Windows FormsWindows FormsWindows FormsWindows Forms(Controls, Drawing,WindowsApplication Services)


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Java Implementation of Framework

Service InterfaceService InterfaceService InterfaceService Interface

ServiceServiceServiceServiceContainerContainerContainerContainer

(J2EE, EJB, JSP, J2SE, J2ME,MIDP, Java Card)

ProcessProcessProcessProcessManagementManagementManagementManagement

ServiceServiceServiceServiceIntegrationIntegrationIntegrationIntegration

(SQL, JDBC, XML,XSLT, XP, JMS,

RMI, J2EE Connectors,...)

Service PlatformService PlatformService PlatformService Platform

Smart ManagementSmart ManagementSmart ManagementSmart Management(SNMP, CIM, WBEM, JMX)

Smart DeliverySmart DeliverySmart DeliverySmart Delivery(XML, HTML, XHTML,

WML, VoiceXML,XSLT, HTTP, SSL,XP, SOAP, WSDL,UDDI, ebXML, ...)

Web ServicesWeb ServicesWeb ServicesWeb ServicesSmart ProcessSmart ProcessSmart ProcessSmart Process(ebXML, XAML)

Smart PolicySmart PolicySmart PolicySmart Policy(LDAP, Kerberos, PKI,

OASIS Security))

Service Creation and AssemblyService Creation and AssemblyService Creation and AssemblyService Creation and Assembly(JB, JSP, EJB)


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.NET And/Or Java

Not just one or the other can use a mixed applicationenvironment Pure Windows applications are probablybetter done with .NET than Java

Java should be used when platform (or vendor-)independence is necessary/desirable

Java is more mature There is Java for .NET via IBM Rational Both can be used for web services - .NET is easier but J2EE is more scalable

Other practical factors must be taken into consideration


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Sample Scoring

Java, JVM are open standards****** Open StandardsOpen StandardsOpen StandardsOpen Standards

Deploy same code on multiple platforms

and multiple projects

****** ReuseReuseReuseReuse

VB code easier to learn***** Speed of developmentSpeed of developmentSpeed of developmentSpeed of development

Java more scalable for very large systems******* PerformancePerformancePerformancePerformance

VB/Com development since 1993****** ReliabilityReliabilityReliabilityReliability

VB,C#,J# all run in the same run-timeenvironment

***** Multiple Languages SingleMultiple Languages SingleMultiple Languages SingleMultiple Languages SinglePlatformPlatformPlatformPlatform

Java Can run on many platforms throughthe JVM

***** Single Language MultipleSingle Language MultipleSingle Language MultipleSingle Language MultiplePlatformsPlatformsPlatformsPlatforms

Execute Java Code on Mainframe***** ScalabilityScalabilityScalabilityScalability

VB.net and C# are easier to use than J2EE****** Ease Of Use (DevelopmentEase Of Use (DevelopmentEase Of Use (DevelopmentEase Of Use (DevelopmentEnvironment)Environment)Environment)Environment)

CommentsCommentsCommentsComments.NET.NET.NET.NET J2EE J2EE J2EE J2EECriteriaCriteriaCriteriaCriteria


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Java Development Options Comparison


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Application Design and Delivery Landscape Notes


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Application Design and Delivery Landscape

Bigger picture put application development in context

Look at bigger picture Management framework

Process and portfolio management

Change and release management Requirements management Quality management Analysis, design and develop

Deployment and operation


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Process and Portfolio Management IBM

Create, customiseand deploy an SOAGovernance Processusing IBM Rational Method Composer

Use IBM Rational Portfolio Manager toidentify and manage your software

development projects and resources,assess cost and ROI, and comply with

your SOA Governance policies


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Change and Release Management - IBMUse IBM Rational ClearCase

for full lifecycle management,and version control of development artifacts

Use IBM Rational ClearQuest forgeographically distributed activities,

changes and defect management

Use IBM Rational BuildForge to achieve a repeatable, automated

build process to accelerate software delivery

Use IBM Rational Asset Manager to define, create, group, store,search, retrieve, measure and

govern the re-use of developmentassets


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Requirements and Quality Management

Use IBM Rational ClearQuest and Rational Functional Tester for integrated test, activity and

quality management

Use Rational RequisitePro to ensure businessneeds drive IT investment and validate that thedeployed solutions meet quality measures,

managing requirements throughout thedevelopment lifecycle

Use IBM Rational Performance Tester to performperformance and load testing with local/remote

execution and monitoring


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Analysis, Design and Construction

Use WebSphere Business Modeler and Integration

Developer to model businessprocesses, simulate / socialise

business cases and makehuman / automated workflows

executable.

Use IBM Rational Software Architect

to understand yourexisting architecture

and drive its evolution,using analysis,modeling and

transformation capabilitiesacross UML and source

code boundaries

Use IBM s Eclipse-powered Rational

Application Developer to code,generate, unit test,analyze and debugyour applications &services across the

Java, Web, Portal andopen standards

landscapes


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Govern The Process of Software Development

Budget Statusfrom Rational Portfolio Manager Rational Portfolio Manager Rational Portfolio Manager Rational Portfolio Manager

Defect Glide Pathfrom Rational ClearQuest Rational ClearQuest Rational ClearQuest Rational ClearQuest

Testing Statusfrom Rational Rational Rational Rational TestManager TestManager TestManager TestManager

Requirements Volatilityfrom Rational RequisitePro Rational RequisitePro Rational RequisitePro Rational RequisitePro

Code Churnfrom Rational ClearCase Rational ClearCase Rational ClearCase Rational ClearCase


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Software Modernisation Notes


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Software Modernisation Issues

To enable flexibility, IT must overcome challenges suchas:

No electronic inventory of current IT assets Complex application architectures Skills lock-in

Islands of development No flexibility for new investments


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Rational Toolset

Use RationalRationalRationalRational ClearQuestClearQuestClearQuestClearQuest Test ManagerTest ManagerTest ManagerTest Manager to manage your testingprocess integrating requirements from RationalRationalRationalRational RequisiteProRequisiteProRequisiteProRequisitePro

Use Rational Manual TesterRational Manual TesterRational Manual TesterRational Manual Tester to provide comprehensive testing of anything including printed documents, internal processes, etc. Save time and improve quality by automating tests with RationalRationalRationalRational

Functional Tester (RFT),Functional Tester (RFT),Functional Tester (RFT),Functional Tester (RFT), including extensions for 3270, 5250,and VT

Ensure scalability of applications which expose existing assets innew ways (e.g. services) with Rational Performance Tester (RPT)Rational Performance Tester (RPT)Rational Performance Tester (RPT)Rational Performance Tester (RPT)

Identify vulnerabilities, privacy issues, quality exposures, andstandards non-compliance with RationalRationalRationalRational AppScanAppScanAppScanAppScan


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Application Transformation

zSeriesiSeriesUnix

Windows

AutomatedConversion

RationalApplicationDeveloper

(RAD)

ApplicationApplicationApplicationApplicationEnvironmentsEnvironmentsEnvironmentsEnvironments

ApproachApproachApproachApproachRationalRationalRationalRational

ManagementManagementManagementManagementToolsToolsToolsTools

Refactoring

RationalBusiness

Developer(RBD)

iSeries

DeploymentDeploymentDeploymentDeployment

WindowsLinux


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Modernise Asset Management

Understand and analyse the impact of change acrossheterogeneous enterprise applications using X-Analysis

Manage assets across their lifecycle from design andcreation to consumption and change withRational Asset Manager (RAM)

Deploy and manage runtime services usingWebSphere Service Registry & Repository (WSRR)


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Spectrum of Options for Application Modernisation

Existing CoreExisting CoreExisting CoreExisting CoreBusinessBusinessBusinessBusinessApplicationsApplicationsApplicationsApplications

New UIrefacing or rewriting

Web browser UIOr Rich UI

ModernScreens

Portal

ExtractDesign

Re-BuildNew

ApplicationEGL

Java

ILE

EGL

Java

COBOL

Transformation/ Conversion

Discoveryand

Analysis

RefactoringRationalized

EfficientVersionof the

Application

ReusableComponents

orServices

SOA


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Application Analysis, Discovery and Maintenance

Objective and accurate forensics for impact analysis

System wide perspective Visualisation Drill-Down from high-level to detail Non System/technology expert inclusion Improved development quality and productivity

Share critical information accurately Make large scale changes possible: field resizing


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Automated Repository Generation

CrossCrossCrossCross----ReferenceReferenceReferenceReferenceDataDataDataData

Data ModelData ModelData ModelData Model

DataDataDataData

SourceSourceSourceSource

Data BaseData BaseData BaseData Base

ProgramsProgramsProgramsPrograms

DisplaysDisplaysDisplaysDisplays

Existing SystemExisting SystemExisting SystemExisting System

Business RuleBusiness RuleBusiness RuleBusiness RuleLogicLogicLogicLogic

Business LogicBusiness LogicBusiness LogicBusiness LogicBusiness LogicBusiness LogicBusiness LogicBusiness LogicValidationCalculationsSecondary ReadsSecondary UpdatesBatch Calls

Data ModelData ModelData ModelData ModelData ModelData ModelData ModelData ModelData DictionaryLogical Files/ViewsKey MapRelationshipsSpecial Fields

CrossCrossCrossCrossCrossCrossCrossCross--------Ref DataRef DataRef DataRef DataRef DataRef DataRef DataRef DataAll ObjectsAll SourceAll LanguagesAll Variables

AutomatedAutomatedAutomatedAutomatedExtraction andExtraction andExtraction andExtraction and

RefreshRefreshRefreshRefresh

XXXX----Analysis RepositoryAnalysis RepositoryAnalysis RepositoryAnalysis Repository


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Business Rule Extraction

Legacy Code Code ComponentsLegacy Code Code Components

BusinessRule

Narratives


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Software Rewrites New IDE ToolEclipse/Rational/ Eclipse/Rational/ Eclipse/Rational/ Eclipse/Rational/ Visual Studio/EGL/ Visual Studio/EGL/ Visual Studio/EGL/ Visual Studio/EGL/

PlexPlexPlexPlex/LANSA /LANSA /LANSA /LANSA

Discovery, Analysis & MaintenanceXXXX----AnalysisAnalysisAnalysisAnalysis

X-Referencing& Documentation

X-Referencing& Documentation

Relational DataModel

Relational DataModel

Business RuleLogic

Business RuleLogic

GraphicalFunctionDiagrams

GraphicalFunctionDiagrams

RPG as PseudoCode

RPG as PseudoCode

Data FlowCharting

Data FlowCharting

UML& DDLExtraction

UML& DDLExtraction

RSxRSxRSxRSx/Together/CA GEN /Together/CA GEN /Together/CA GEN /Together/CA GENSoftware Modeling Tools

Activity, Use-Case& Class Diagrams

Activity, Use-Case& Class Diagrams

Data ModelRedesign

Data ModelRedesign Persistence

CRUDSOA

Persistence

CRUDSOA

JSF/Java/RCPWeb2.0/Ajax

JSF/Java/RCPWeb2.0/Ajax

.Net/ASP/C#Silverlight/XAML

.Net/ASP/C#Silverlight/XAML

PHP/MySQLPHP/MySQLX-Migrate


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VB6 Modernisation

Automatic conversion to either .NET or JAVA


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PowerBuilder Modernisation

PowerMigrator tool Migration process:

1: Gathering requirements 2: Generate JSP 3: Generate Component

Templates 4: Select, Slice and Move 5: Testing 6: Debug 7: Deploy


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PowerBuilder Migration Architecture


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Sample Banking Application Infrastructure

Sample internet bankingapplication layers


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Sample Banking Application Components


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More Information

Alan [email protected]

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Notes on Software Development, Platform and Modern is at Ion