Overview of JSF 2.0

JavaServer™ Faces 2.0 Overview • Roger Kitain • Enterprise Java Platforms >

JSF 2.0 – What We Heard • Top Goals 1)Page Declaration Language (PDL) 2)Make custom components much easier to develop 3)Ajax Support 4)Reduce the configuration burden

Page Declaration Language • Based on Facelets • Facelets: > first non-JSP PDL designed for JSF > Some differences from JSP: > Pages compiled to abstract structure - when executed builds JSF component view > Don't need TLD for tag attributes > Page templating

Easier component Development <html xmlns=\"http://www.w3.org/1999/xhtml\" xmlns:h=\"http://java.sun.com/jsf/html\" xmlns:ez=\"http://java.sun.com/jsf/composite/simpleout\"> ... <h1>Yellow Text Example</h1> <h:form id=\"form1\"> <ez:out value=\"Test Value\"/> <p><h:commandButton value=\"reload\"/></p> </h:form> </html>

Easier component Development <html xmlns=\"http://www.w3.org/1999/xhtml\" xmlns:h=\"http://java.sun.com/jsf/html\" xmlns:composite=\"http://java.sun.com/jsf/composite\"> ... <composite:interface name=\"out\" displayName=\"Very Basic Output Component\" preferred=\"true\"...> <composite:attribute name=\"value\" required=\"false\"/> </composite:interface> <composite:implementation> <h:outputText value=\"#{compositeComponent.attrs.value}\" style=\"background-color: yellow\"/> </composite:implementation> </body> </html>

Ajax Support • Resource Delivery Mechanism • Partial View Processing • Partial View Rendering ↑ In JSF 2.0 Spec • Ajaxification Capability • Ajax Enabled Components ↓ In Component Library R

Ajax Support Partial View Processing Ajax Request execute:4,5 Apply Request Process Restore View Values Validations 1 2 1 Render Invoke Update Model 1 Response Application Values 2 3 4 5 Execute Portion

Ajax Support Partial View Processing Ajax Request render:4,5 Apply Request Process Restore View Values Validations 1 2 1 Render Invoke Update Model 1 Response Application Values 2 3 4 5 Render Portion

Ajax Support • JavaScript namespace registered with OpenAjax • JavaScript API for performing Ajax interations with JSF > collecting/encoding view state > sending requests > processing Ajax response and Dom updates

Ajax Support Ajaxification Capability • A way to give ajax capability to existing JSF components without writing any JavaScript • Specification will define core tag <h:commandButton value=”submit”> <f:ajaxRequest render=”myOutput” /> </h:commandButton> ... <h:outputText id=”myOutput” />

Reduce Configuration Burden Annotation Support • An alternative to XML configuration • @FacesComponent, @FacesConverter, @ManagedBean • “Scope” Annotations: > @RequestScope, @SessionScope, @ApplicationScope

Summary • Collected feedback from community and EG members • Defined top goals for specification • Diverse set of EG members

Overview of JSF 2.0

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