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Open World Forum 2009 Migration With Telosys
Open World Forum 2009 Migration With Telosys
Open World Forum 2009 Migration With Telosys
Open World Forum 2009 Migration With Telosys
Open World Forum 2009 Migration With Telosys
Open World Forum 2009 Migration With Telosys
Open World Forum 2009 Migration With Telosys
Open World Forum 2009 Migration With Telosys
Open World Forum 2009 Migration With Telosys
Open World Forum 2009 Migration With Telosys
Open World Forum 2009 Migration With Telosys
Open World Forum 2009 Migration With Telosys
Open World Forum 2009 Migration With Telosys
Open World Forum 2009 Migration With Telosys
Open World Forum 2009 Migration With Telosys
Open World Forum 2009 Migration With Telosys
Open World Forum 2009 Migration With Telosys
Open World Forum 2009 Migration With Telosys
Open World Forum 2009 Migration With Telosys
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Open World Forum 2009 Migration With Telosys

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Telosys use case …

Telosys use case
How to migrate from Client/Server
to Java/Web ?

Published in: Technology, Education
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  • 1. Telosys use case How to migrate from client/server to Java/Web ? Laurent Guérin . SOGETI : National Practice Leader "Open Solutions" . OW2 : Telosys project leader laurent.guerin@sogeti.com
  • 2. The context Laurent Guérin - 2 octobre 2009 2
  • 3. The company • Activities & key figures ( year 2008 ) : Activities : - Security 80 % ( workplaces protection ) - Technology - Logistics - Mobile security - Other … Size : 6400 employees Turnover : 214 million € Location : France & Belgium Laurent Guérin - 2 octobre 2009 3
  • 4. The software ( the "old" application ) • Classical "client/server" application (Visual Basic) with a relational database • Used by security officers to manage a workplace supervision Events Team Equipments Logging etc... • Multilingual (French, English, Dutch) • Installed on each site Laurent Guérin - 2 octobre 2009 4
  • 5. The initial situation ( Client / Server ) Relational Database Installation required on each site ! Application + runtime Installation Application & update + runtime IT Resources management ! Runtimes ! Application Application + runtime + runtime The number of sites is growing quickly Application 2007 = + runtime Not accessible out of the VPN 3x nb of sites in 2006 Laurent Guérin - 2 octobre 2009 5
  • 6. The target ( new Web application ) Application Database "Online application" Server Server accessible via a browser Nothing to install Standard http environment : . http . HTML . XML . Java Open architecture . etc … ( extranet ? ) Lightweight client Potential new peripherals Potential R.O.I. Laurent Guérin - 2 octobre 2009 6
  • 7. The problematic • Technical migration ( + few evolutions ) No real functional value added Main goal : reduce the cost of the IT resources management • => The R.O.I. depends on the project efficiency : productivity required ! • The user experience must be preserved => good user interface => list of events must be up to AJAX date on the screen needed etc … Laurent Guérin - 2 octobre 2009 7
  • 8. The migration Laurent Guérin - 2 octobre 2009 8
  • 9. Project based on Open Source software • Infrastructure & middleware Linux Apache Tomcat 100 % MySQL free • Java framework 100 % Telosys framework simple LGPL • IDE Cost Eclipse Telosys tools (plugins) Efficiency Laurent Guérin - 2 octobre 2009 9
  • 10. Why Telosys ? Laurent Guérin - 2 octobre 2009 10
  • 11. Telosys framework • Telosys is a "global framework" ( "full-stack" / "multi-aspects" framework ) Only one ".jar" file "Keep it simple ( telosys.jar ) and pragmatic" Laurent Guérin - 2 octobre 2009 11
  • 12. Telosys framework : the "only" framework Laurent Guérin - 2 octobre 2009 12
  • 13. Telosys framework : the screens Based on No HTML <%@ taglib uri="/telosys/widgets" prefix="t" %> <t:screenbody data="employe" > JSP + taglib "widgets" <t:label x="40" y="60" txt="Code : " cl="PK_field_label" /> <t:label x="40" y="100" txt="Name : " /> Very close to <t:field x="200" y="60" id="code" data="#" size="6" maxlength="6" /> Client/Server <t:field x="200" y="100" id="name" data="#" size="30" maxlength="30" /> screens definitions <t:button x="460" y="100" id="b1" txt=“My button" onclick="…" /> </t:screenbody > Example : V.B. ".frm" ScreenManager XML / http ScreenData DAO <employe . code code="" "employe" . name mapping EMPLOYE name="" /> "societe" . Code ScreenMap "xxxx" . Name Client/Server dialog based on AJAX Generated Generated => Well suited for JavaBean DAO ( POJO ) C/S migration Laurent Guérin - 2 octobre 2009 13
  • 14. Telosys tools : code generation Generation Reliable Reposi- (always Database tory up to date) (XML) plugins Generation Telosys Templates Templates Wizards The existing C/S database The code generation improve dramatically the productivity Full Full Java CRUD Java Classes Screens Classes Skeletons Laurent Guérin - 2 octobre 2009 1414
  • 15. Telosys tools : a short demo ... How to … 1 – generate the lightweight repository 2 – generate all the "Data Access Layer" Laurent Guérin - 2 octobre 2009 15
  • 16. The benefits • High productivity Global simple & efficient workload gain : Code generation from 20% to 40% • Screens behavior Very close to original C/S screens Good user experience Natively based on AJAX Client/server dialog • High performances Scalability • Natively multilingual Laurent Guérin - 2 octobre 2009 16
  • 17. Generalization & extensions All client/server applications based on a relational database can be migrated in the same way • Visual Basic • Power Builder New tools : Same • NSDK / NatStar automatic DB screens • Delphi transfor- mation • WinDev • Oracle Forms • etc … Laurent Guérin - 2 octobre 2009 17
  • 18. Questions ? Reliable Efficient framework tools Laurent Guérin - 2 octobre 2009 18
  • 19. Web links • OW2 : http://www.ow2.org • Telosys : http://telosys.ow2.org • Telosys LinkedIN group : http://www.linkedin.com/groups?gid=1340197 Laurent Guérin - 2 octobre 2009 19

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