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A Complete Tour of JSF 2
This document provides a summary of the major new features in JavaServer Faces (JSF) 2.0, including Facelets as the preferred view declaration language, composite components, Ajax support, partial state saving, view parameters, system events, resources, behaviors, view traversal, annotations, navigation, exceptions, validation, EL improvements, and new scopes. It highlights contributions from the JSF expert group and community and provides resources for learning more about JSF 2.0.
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A Complete Tour of JSF 2
- 1. A Complete Tourof JavaServer Faces 2.0 Jim Driscoll [email_address] Andy Schwartz [email_address]
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- 4. Faces Expert GroupSun – Ed Burns, Roger Kitain (Spec leads)
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- 12. All ofthe Faces of Faces at Sun R Ed Burns Jim Driscoll Roger Kitain Ryan Lubke
- 13. Most ofthe Faces of the EG Andy Schwartz Dan Allen Alexandr Smirnov Ken Paulsen Martin Marinschek Pete Muir Kito Mann Joe Ottinger Ted Goddard Neil Griffin Jason Lee David Geary Mike Freedman Gavin King R Jeremy Grelle Keith Donald Ed Burns Jim Driscoll Roger Kitain Ryan Lubke
- 14. Some Facesof the Faces Community Andy Schwartz Dan Allen Jacob Hookom Alexandr Smirnov Ken Paulsen Martin Marinschek Matthias We ßendorf Pete Muir Alexander Jesse Imre O ßwald Yara Senger Lincoln Baxter III Adam Winer Craig McClanahan Kito Mann Rick Hightower Joe Ottinger Ted Goddard Neil Griffin Jason Lee Stan Silvert David Geary Mike Freedman Gavin King Hazem Saleh Çağatay Çivici Dennis Byrne Roger Keays Amy Fowler Max Katz R Jeremy Grelle Keith Donald
- 15. Community Ideas Innovationhappens everywhere
- 16. Most ideas wereproven in the community before adoption
- 17. Some approaches (i.e.,Ajax) required a good deal of merging
- 18. Highlights on eachfeature
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- 21. Facelets Almost exactlythe same as existing Facelets technology
- 22. JSP still supported,but... All new features will be in Facelets
- 23. Facelets now thepreferred View Declaration Language Designed for JSF from the beginning
- 24. Facelets XHTML based– document validation
- 25. Better error handling,including line numbers
- 26. Library prefixes asnamespaces
- 27. EL directly inpage: #{bean.propertyname} Templating made easy ui:composition, ui:define, ui:insert
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- 33. Composite Components EnableTrue Abstraction Create a true, reusable, component from an arbitrary region of a page
- 34. Built by composingother components Full support for using attached objects in the using page, and mapping them to arbitrary targets within the composite component Action methods
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- 36. Composite Components Buildson top of Resources and Facelets
- 37. Heavily leverages namingconventions Resource dir
- 38. Library name isdirectory name
- 39. Tag name isfile name Essentially special-case templating
- 40. Composite Component Infile ctx-root/resources/simpleout/out.xhtml: <composite:interface> <composite:attribute name="value" required="true"/> </composite:interface> <composite:implementation> <h:outputText value="#{cc.attrs.value}" style="background-color: yellow"/> </composite:implementation>
- 41. Composite Component <htmlxmlns="http://www.w3.org/1999/xhtml" xmlns:h="http://java.sun.com/jsf/html" xmlns:f="http://java.sun.com/jsf/core" xmlns:ez="http://java.sun.com/jsf/composite/simpleout"> .... <ez:out value="Test Value"/> ....
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- 43. Ajax Inspiration: ADFFaces, RichFaces, IceFaces, DynamicFaces
- 44. Two entry points:Declarative: <f:ajax> tag, uses AjaxBehavior
- 45. Programmatic ajax: resourcelibrary javax.faces , resource name jsf.js , JavaScript namespace jsf.ajax. jsf.ajax.request function
- 46. Ajax Declarative ajax:useful to ajaxify non ajax pages Add ajax behaviors “invisibly”
- 47. Supports many Ajaxusecases JavaScript Ajax API usage pattern jsf.ajax.request() JavaScript function
- 48. Integrate with existingAjax widgets Simplify lifecycle view: execute and render
- 49. Ajax Tag Example<h:outputText id="out1" value="#{count.count}"/> <h:commandButton value="Count"> <f:ajax render=”out1”/> </h:commandButton>
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- 51. Partial State SavingInspired by Trinidad state saving
- 52. Save only thestate that's changed since creation of the component tree
- 53. Per-view state sizeup to 4X smaller than before
- 54. Default for pageswritten with Facelets
- 55. Of interest toJava custom component authors
- 56. All standard componentsimplement this feature - your composite components will automatically take advantage of it.
- 57. Partial State SavingPartialStateHolder behavioral interface, extends existing StateHolder . PartialStateHolder.markInitialState() StateHelper , from UIComponent , does most of the work: replace ivars with keys within StateHelper No longer need custom saveState/restoreState() implementations
- 58. Simplify Custom Componentspublic class MyInput extends UIComponentBase { private enum Keys { name } public String getName() { return getStateHelper().get(name); } public void setName(String nameParam) { getStateHelper().put(name, nameParam); } }
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- 60. View Parameters Inspiredby Page Parameters from JBoss Seam
- 61. Provides a wayto map request parameters to special components within the view
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- 64. View Parameters <f:metadata> <f:viewParam name="foo" value="#{bean.foo}"/> </f:metadata> page1.xhtml?foo=bar bean.foo will equal “bar”
- 65. View Parameters UIViewParameter extends UIInput
- 66. All attached objectsvalid for UIInput are valid – validation and conversion
- 67. Breaks the tyrannyof POST
- 68. Lays the foundationfor Bookmarkable pages
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- 70. System Events Influencedby JSFTemplating Inspired by Solaris Dtrace, Linux strace, etc. Publish/Subscribe event bus for things that happen during the JSF Lifecycle
- 71. Adds to eventlistening abilities: FacesEvent/FacesListener
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- 75. System Events Listenerscan be registered at three scopes component UIComponent.subscribeToEvent()
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- 77. application Application.subscribeToEvent()Publish is always Application.publishEvent()
- 78. Declarative System Events<h:inputText> <f:event type="preValidate" listener="#{bean.doSomePreValidation}"/> </h:inputText>
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- 80. Resources Avoid needfor separate Filter or Servlet.
- 81. Resources are logicallyrelated to components, treat them that way.
- 82. Load from Classpath,or filesystem
- 83. Full support for“Library” concept, I18N, Versioning
- 84. Resources Java API@ResourceDependency or @ResourceDependencies annotation on UIComponent , Renderer , Validator , Converter , ClientBehavior attributes for resource name, library name
- 85. attribute for target:head, body, form
- 86. Built in supportfor CSS, Image, JavaScript resources
- 87. Resources Markup API<h:head> , <h:body> Used for resource relocation targets <h:outputScript> , <h:outputStylesheet> Attributes for resource name, library name
- 88. Attribute for target:head, body, form
- 89. Smart includes, usefulfor composite components
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- 92. Examples of use<a href="#{resource['header.jpg']}" />
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- 95. Behaviors A Behavior is an interface and invents a new type of “attached object” which takes part in decode/encode.
- 96. ClientBehavior extends Behavior
- 97. Define things thathappen in the view, in the browser
- 98. Currently only onestandard ClientBehavior implementation: AjaxBehavior
- 99. New interface: ClientBehaviorHolder , implemented by all components in javax.faces.component.html
- 100. Special ClientBehaviorRenderer, does not extend Renderer . getScript() , decode()
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- 102. View Traversal 1.2:UIComponent.invokeOnComponent() Single component in context VisitContext.createVisitContext()
- 103. UIComponent.visitTree(VisitContext) Multiple componentsin context Used on Ajax requests for partial traversal
- 104. Used by new StateManagementStrategy
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- 118. With implicit Navigation,may eliminate need for faces-config.xml in many cases
- 119. Navigation Bookmarkable PagesUses View Parameters to ensure request params are validated before rendering page
- 120. New components <h:link> , <h:button> , cause the browser to submit GET request, contrast with <h:command{Button|Link}>
- 121. <f:param> addGET params
- 122. <h:button outcome=”next” value=”Go”includeViewParams=”true”/> Inverse mapping of view params
- 123. Navigation Implicit NavigationIf you don’t want all that <navigation-rules> stuff, you can put the navigation logic straight in the page. Conditional Navigation – if statements
- 124. ConfigurableNavigationHandler Query navigationrules at run-time
- 125. Exceptions ExceptionHandler canbe decorated
- 126. all interesting exceptionsflow through the exception handler!
- 127. new exception type:UpdateModelException ValidatorException contains multiple FacesMessages
- 128. EL #{component} , #{cc} (composite component) : get the “currently” processed component / composite component
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- 131. EL Make ActionEventparam optional for action-listeners
- 132. For EE6, ELmethod invocation supports parameters makes f:setPropertyActionListener obsolete
- 133. Validation Integration withJSR 303: Bean Validation @NotEmpty private String name;
- 134. default validator: javax.faces.Bean– automatically applied to all input fields Default-validator: hook up a validator for all instances of EditableValueHolder
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- 136. New Validation Tags<f:validateBean> Beans validation tag <f:validateRequired> Required field <f:validateRegexp> Regular expression validation
- 137. New Scopes “conversation” comes from Java Contexts and Dependency Injection (JSR 299) nee “Weld”
- 138. Flash: inspired byRuby on Rails accessible from EL or ExternalContext
- 139. useful for storingdata for use on the “next” request
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- 141. New Scopes View:persists as long as user interacts with the same view managed-beans can be put in view-scope Custom Scopes
- 142. Project Stage Inspiredby Rails
- 143. Development Better errorreporting, debugging Production Better performance
- 144. Using JSF 2.0Now Project Mojarra FCS in a few weeks
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- 146. Color coded JavaDocshttp://javaserverfaces.dev.java.net/docs/2.0/ New in 2.0
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- 148. Deprecated in 2.0(JSP) M
- 149. Blogs for moredetail http://andyschwartz.wordpress.com/2009/07/31/whats-new-in-jsf-2/
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- 155. David Geary's writeup:http://www.ibm.com/developerworks/java/library/j-jsf2fu1/index.html Java EE Tutorial (out soon)
- 156. Several additional bookswill be out this year
- 157. A Complete Tourof JavaServer Faces 2.0 Jim Driscoll [email_address] Andy Schwartz [email_address]