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Colorado Software Summit: October 24 – 29, 2004 © Copyright 2004, Object Systems Group
Bill Dudney — Building JSF Applications Page 1
Building JSF ApplicationsArchitecting JSF Based Web Applications for the Real World
Bill DudneyObject Systems [email protected]
Colorado Software Summit: October 24 – 29, 2004 © Copyright 2004, Object Systems Group
Bill Dudney — Building JSF Applications Page 2
AgendaJSF Overview
Patterns & Architecture of JSFJSF Request/Response LifecycleComponents
Separation of ConcernsJSF User InterfaceServicesConnecting
Colorado Software Summit: October 24 – 29, 2004 © Copyright 2004, Object Systems Group
Bill Dudney — Building JSF Applications Page 3
What Is JSF?Standard Web Application Framework
Defines the Programming ModelReusable ComponentsBuilds HTML from ComponentsValidation & ConversionComponent Tree
Colorado Software Summit: October 24 – 29, 2004 © Copyright 2004, Object Systems Group
Bill Dudney — Building JSF Applications Page 4
Goals of JSFEase/Simplify DevelopmentSupport from/by toolsEvents easily tied to server side codeEase of extensionManage UI state
Colorado Software Summit: October 24 – 29, 2004 © Copyright 2004, Object Systems Group
Bill Dudney — Building JSF Applications Page 5
AgendaJSF Overview
Patterns & Architecture of JSFJSF Request/Response LifecycleComponents
Separation of ConcernsJSF User InterfaceServicesConnecting
Colorado Software Summit: October 24 – 29, 2004 © Copyright 2004, Object Systems Group
Bill Dudney — Building JSF Applications Page 6
Patterns & Architecture of JSFModel-View-ControllerComposite Component TreeServer Side Events
Colorado Software Summit: October 24 – 29, 2004 © Copyright 2004, Object Systems Group
Bill Dudney — Building JSF Applications Page 7
Standard MVCMajor Benefits
Separation of ConcernsLoose coupling
Won’t work on the webBrowsers don’t listen to server eventsWhat objects would observe models?
So what to do to get the benifits?
Colorado Software Summit: October 24 – 29, 2004 © Copyright 2004, Object Systems Group
Bill Dudney — Building JSF Applications Page 8
Enter JSF Web MVC
Colorado Software Summit: October 24 – 29, 2004 © Copyright 2004, Object Systems Group
Bill Dudney — Building JSF Applications Page 9
JSF Provides Web MVCController
FacesServletLifeCycleApplicationNavaigationHandlerActionListenerConversion and Validation
Colorado Software Summit: October 24 – 29, 2004 © Copyright 2004, Object Systems Group
Bill Dudney — Building JSF Applications Page 10
JSF Provides Web MVCView
RenderKitRenderers
ModelJavaBeansEJB’s
Extension PointsView & Controller are extensible
Colorado Software Summit: October 24 – 29, 2004 © Copyright 2004, Object Systems Group
Bill Dudney — Building JSF Applications Page 11
Typical Implementation
Colorado Software Summit: October 24 – 29, 2004 © Copyright 2004, Object Systems Group
Bill Dudney — Building JSF Applications Page 12
Composite Component TreeClient view is simple
Whole tree looks like one
ImplementationSimplified
Colorado Software Summit: October 24 – 29, 2004 © Copyright 2004, Object Systems Group
Bill Dudney — Building JSF Applications Page 13
Server Side EventsEvents are cued & consumed server side
Typically from user actions (button clicks, etc.)
Possible to add programatically
Observer Pattern
Colorado Software Summit: October 24 – 29, 2004 © Copyright 2004, Object Systems Group
Bill Dudney — Building JSF Applications Page 14
AgendaJSF Overview
Patterns & Architecture of JSFJSF Request/Response LifecycleComponents
Separation of ConcernsJSF User InterfaceServicesConnecting
Colorado Software Summit: October 24 – 29, 2004 © Copyright 2004, Object Systems Group
Bill Dudney — Building JSF Applications Page 15
JSF Request/Response LifecycleRestore ViewApply Request ValuesProcess ValidationsUpdate Model ValuesInvoke ApplicationRender Response
Colorado Software Summit: October 24 – 29, 2004 © Copyright 2004, Object Systems Group
Bill Dudney — Building JSF Applications Page 16
AgendaJSF Overview
Patterns & Architecture of JSFJSF Request/Response LifecycleComponents
Separation of ConcernsJSF User InterfaceServicesConnecting
Colorado Software Summit: October 24 – 29, 2004 © Copyright 2004, Object Systems Group
Bill Dudney — Building JSF Applications Page 17
UIComponentHub of the frameworkTypically Delegate
RenderingValidatingConverting
Colorado Software Summit: October 24 – 29, 2004 © Copyright 2004, Object Systems Group
Bill Dudney — Building JSF Applications Page 18
AgendaJSF Overview
Patterns & Architecture of JSFJSF Request/Response LifecycleComponents
Separation of ConcernsJSF User InterfaceServicesConnecting
Colorado Software Summit: October 24 – 29, 2004 © Copyright 2004, Object Systems Group
Bill Dudney — Building JSF Applications Page 19
Running Example
Colorado Software Summit: October 24 – 29, 2004 © Copyright 2004, Object Systems Group
Bill Dudney — Building JSF Applications Page 20
UIComponent Instances
Colorado Software Summit: October 24 – 29, 2004 © Copyright 2004, Object Systems Group
Bill Dudney — Building JSF Applications Page 21
Implementation
Colorado Software Summit: October 24 – 29, 2004 © Copyright 2004, Object Systems Group
Bill Dudney — Building JSF Applications Page 22
To the Code!
