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Open World Forum 2009 Migration With Telosys

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Publicada em

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

Publicada em: Tecnologia, Educação
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Open World Forum 2009 Migration With Telosys

  1. 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. 2. The context Laurent Guérin - 2 octobre 2009 2
  3. 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. 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. 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. 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. 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. 8. The migration Laurent Guérin - 2 octobre 2009 8
  9. 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. 10. Why Telosys ? Laurent Guérin - 2 octobre 2009 10
  11. 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. 12. Telosys framework : the "only" framework Laurent Guérin - 2 octobre 2009 12
  13. 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. 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. 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. 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. 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. 18. Questions ? Reliable Efficient framework tools Laurent Guérin - 2 octobre 2009 18
  19. 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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