do jsf with prime faces
TRANSCRIPT
EXPLORING JSF 2.0AND
PRIMEFACES
Cagatay Civici
PRIMETECHNOLOGY
Cagatay Civici
JSF EG (Expert Group) Member
PrimeFaces Lead
Apache MyFaces PMC
Speaker, Author, Reviewer
Consultant and Trainer for Prime Technology
Topics
JSF Overview
What’s New in JSF 2.0?
Go beyond with PrimeFaces
JSF Overview
Standard for Java EE
Component Oriented
Event Driven
RenderKits (web, mobile ...)
History
JSR 127 - JSF 1
JSR 252 - JSF 1.2
JSR-314 - JSF 2.0 <- Coolest one
JSF Ecosytem
Apache Software Foundation (MyFaces, Trinidad, Tobago, Tomahawk, ExtVal...)
Oracle (ADF Faces - Mojarra Implementation)
IBM (IBM JSF Component)
Prime Technology (PrimeFaces)
VMware/SpringSource (Spring WebFlow)
RedHat/JBoss (Seam, RichFaces)
JAVA EE 6 (CDI, Bean Validation)
Other *Faces libs
JSF 2.0 Highlights
Facelets/VDL
AJAX
Custom Components
Behaviors
Partial State
• Navigations• Resource Loading• Bookmarking• New Event API• Exception Handling• JSR-303 Bean Validation
and general pain relief
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JSP with JSF
Mismatch
JSP tags create JSF components
Content vs Component
Two different lifecycles
Facelets / VDL
XHTML based
Optimized for JSF
Templating
New View Declaration Language API
NOW STANDARD!
AJAX and JSF 1.x
Good match (Partial Output)
Wheel reinvented by;
Compatibility issues
PrimeFaces
RichFaces
IceFaces
OpenFaces
Trinidad
ADF Faces *Faces
Tomahawk
AJAX and JSF 2.0
Now Standard!
New APIs;
Server: PartialViewContext
Client: jsf.ajax.AjaxRequest
New tag;
<f:ajax />
AJAX and JSF 2.0
PartialViewContext API
Partial Processing (execute)
Partial Rendering (render)
Standard request parameters
f:ajaxAjax Behavior
<h:inputText value=”#{bean.value}”><f:ajax render=”display”/>
</h:inputText> <h:outputText id=”display” />
<h:inputText value=”#{bean.value}”><f:ajax render=”display” execute=”@this”/>
</h:inputText> <h:outputText id=”display” />
<h:inputText value=”#{bean.value}”><f:ajax render=”display” execute=”@this” event=”blur”/>
</h:inputText> <h:outputText id=”display” />
No XML
faces-config.xml is not optional
Get rid of;
<managed-bean />
<navigaton-case />
<component />, <renderer />
<converter />, <validator />
...
Managed Beans with JSF 1.x
<managed-bean><managed-bean-name>itemView</managed-bean-name><managed-bean-class>com.prime.view.itemView</managed-bean-class><managed-bean-scope>request</managed-bean-scope>
</managed-bean>
package com.prime.view;
public class ItemView { }
Managed Beans with JSF 2.0
NO XML
@ManagedBean public class ItemView { }
Dependencies with JSF 1.x<managed-bean><managed-bean-name>itemView</managed-bean-name><managed-bean-class>com.prime.view.itemView</managed-bean-class><managed-bean-scope>request</managed-bean-scope><managed-property>
<property-name>itemService</property-name><value>#{itemService}</value>
</managed-property> </managed-bean>
<managed-bean><managed-bean-name>itemService</managed-bean-name><managed-bean-class>com.prime.service.ItemServiceImpl</managed-bean-class><managed-bean-scope>application</managed-bean-scope>
</managed-bean>
package com.prime.view;
public class ItemView {private ItemService itemService;
//getter&setter }
Dependencies with JSF 2.0
@ManagedBean(name=”itemService”) @ApplicationScoped public class ItemServiceImpl implements ItemService {
}
NO XML
@ManagedBean public class ItemView {
@ManagedProperty(value=”itemService”)private ItemService itemService;
//getter&setter
}
Scopes
@RequestScoped
@ViewScoped
@SessionScoped
@CustomScoped
Flash scope
View Scope
Between request and session
Lives for postbacks
#{viewScope}
UIViewRoot.getViewMap()
Flash Scope
ROR concept
Lives in subsequent request
Survives redirect
Post-Redirect-Get
#{flash}
ExternalContext.getFlash()
System Events
Phaselisteners are not enough
Subscribe to various events in lifecycle
Application Events
Component Events
Application Events
Application wide events
ExceptionQueuedEvent
PostConstructApplicationEvent
PreDestroyApplicationEvent
more...
Component Events
View based events
PostAddToViewEvent
PreValidateEvent
PreRenderViewEvent
more...<h:inputText value=”#{bean.value}”><f:event type=”preValidate” listener=”#{bean.preValidate}” />
</h:inputText>
Event Listeners
New API SystemEventListener
isListenerForSource(Object source)
processEvent(SystemEvent event)
Configure via xml or @ListenerFor
Application.subscribeToEvent(event, listener);
UIComponent.subscribeToEvent(event, listener);
Navigations
Implicit Navigation
Configurable NavigationHandler
Navigations with JSF 1.x<navigation-rule><from-view-id>/source.xhtml</from-view-id><navigation-case>
<from-outcome>success</from-outcome><to-view-id>target.xhtml</to-view-id>
</navigation-case> </navigation-rule>
public String buttonClick() {return “success”;
}
source.xhtml target.xhtml
Navigations with JSF 2.0
public String buttonClick() {return “target”;
}
source.xhtml target.xhtml
NO XML
GET Support
Navigate by GET
View Metadata and View Parameters
Bookmarkable URLs
Post-Redirect-Get
GET Support with JSF 1.x
Assigned when bean is used for first time
No validation/conversion support
No post assignment listener (init view)
<managed-bean><managed-bean-name>itemView</managed-bean-name><managed-bean-class>com.prime.view.itemView</managed-bean-class><managed-bean-scope>request</managed-bean-scope><managed-property>
<property-name>itemId</property-name><value>#{param[‘itemId’]}</value>
</managed-property> </managed-bean>
http://www.site.com/itemView.jsf?itemId=10
GET Support with JSF 2.0
Introducing ViewParameters
Validation/conversion support
Post assignment listener (init view)
<f:view><f:metadata>
<f:viewParam name=”itemId” value=”#{itemView.itemId}” /></f:metadata>
</f:view>
http://www.site.com/itemView.jsf?itemId=10
GET Support with JSF 2.0
Validation/conversion support
<f:view><f:metadata>
<f:viewParam name=”itemId” value=”#{itemView.itemId}”><f:validator validatorId=”itemValidator” />
</f:viewParam></f:metadata>
</f:view>
GET Support with JSF 2.0
Post mapping listener<f:view><f:metadata>
<f:viewParam name=”itemId” value=”#{itemView.itemId}”><f:validator validatorId=”itemValidator” />
</f:viewParam>
<f:event type=”preRenderView” listener=”#{itemView.loadItem}”/></f:metadata>
</f:view>
public void loadItem() {//load item with itemId from datatabase
}
GET Support with JSF 1.2
GET component h:outputLink
Manual URL generation
No support for;
context-path
navigation-rules
<h:outputLink value=”#{request.contextPath}”/itemView.jsf?itemId=10>View Item
</h:outputLink>
GET Support with JSF 2.0
<h:button /> and <h:link />
Auto generated Bookmarkable URLs
Integrated with Navigation Rules
<h:link outcome=”main” />
<h:button outcome=”main” includeViewParams=”true”/>
<h:button outcome=”main” includeViewParams=”true”><f:param name=”itemId” value=”#{itemView.itemId}” />
</h:button>
Project Stage
Runtime hint
Mostly for use of implementation and extensions
Development, Production, SystemTest, UnitTest
Application.getProjectStage()
<context-param><param-name>javax.faces.PROJECT_STAGE</param-name><param-value>Development</param-value>
</context-param>
Behaviors
Attaching behaviors
One built-in client behavior, f:ajax
<h:commandButton value=”Submit” onclick=”return confirm(‘Sure?’)”/>
<h:commandButton value=”Submit”><custom:confirmation message=”Sure?” />
</h:commandButton>
State Saving in JSF 1.x
Full Component Tree saved/restored
Attributes saved/restored
Performance/Memory issues
Burden for component developer
State Saving in JSF 2.0
Partial State Saving
Initial state is marked
Deltas are saved and helper
StateHelper API for developers
Much less in size
Resource Loading with JSF 1.xLoading bundles resources from jar
Custom Servlet or Filter required
Resource Loading with JSF 2.0
New Resource APIs for;
Registering
Relocating
Loading
locale, version support
New components
<h:outputStylesheet /> and <h:outputScript />
Registering
Resources located at;
/webroot/resources/mylib
/jar/META-INF/resources/mylib@ResourceDependency(name=”cool.js”, library=”mycoollib”)
public class MyCoolComponent extends UIComponent {}
@ResourceDependencies {@ResourceDependency(name=”cool.js”, library=”mycoollib”)@ResourceDependency(name=”cool.css”, library=”mycoollib”)
}public class MyCoolComponent extends UIComponent {}
Relocating
Resources placed at head or body
<h:head />, <h:body />
UIViewRoot.addComponentResource API
@ResourceDependency(name=”cool.js”, library=”mycoollib”, target=”head”)public class MyCoolComponent extends UIComponent {}
Resource Components
Load from webroot or jar
<h:outputStylesheet name=”cool.css” library=”mycoollib” />
<h:outputScript name=”cool.js” library=”mycoollib” target=”head”/>
<h:graphicImage name=”cool.png” library=”mycoollib”/>
<h:graphicImage value=”#{resource[‘mycoollib:cool.png’}”/>
Resources in CSS
#{resource} variable
Generates;
.header {background:url(“#{resource[‘mylib:header.png’]}”);
}
.header {background:url(“/myapp/javax.faces.resource/header.png?ln=mylib”);
}
Bean ValidationJSR-303 Integration
Reuse constraints@NotNull
@Size(min=5, max=10) private String title;
<h:inputText value=”#{bean.item.title}” required=”true”><f:validateLength min=”5” max=”10” />
</h:inputText/>
instead of
<h:inputText value=”#{bean.item.title}” />
UI ComponentsStandard JSF Components (button, radio, checkbox)
Third Party Suites (e.g. PrimeFaces)
But how to build your own?
Custom Components with JSF 1.x
5 different artifacts required
faces-config.xml config<component /> <renderer/ > jsp tld config
JSP Tag Class Component Class
Renderer Class
Custom Components with JSF 2.0
One .xhtml file is enough
component.xhtml
DatePicker Demo
<prime:datePicker />
/webroot/resources/prime/datepicker.xhtml
/webroot/resources/jquery/...
Next Generation Component Suite
Most Popular JSF 2.0 Library
100+ components (Everything you need)
Lightweight: one jar, no dependencies, zero-config
Skinning support with 25+ themes and theme creator
Extensive documentation
Huge and active community
jQuery based
Mobile UI Kit: TouchFaces
Ajax Push support
Open Source (Apache License)
PRIMEFACES
Setup
No setup required, drop the jar and add the namespace;
xmlns:p=”http://primefaces.prime.com.tr/ui”
<p:editor />
PrimeFaces UI
PrimeFaces Ajax
Based on standard JSF 2.0 Ajax APIs
Extensions;
p:ajax
callbacks
p:ajaxStatus
jquery based client side api implementation
Callbacks
onstart
oncomplete
onsuccess
onerror
p:ajax f:ajaxonevent
onerror
Callback Params
Pass data from server to client as JSON
Built-in callback param : “validationFailed”public void save() {
Request context = RequestContext.getCurrentInstance(); context.addCallbackParam(“saved”, true);
}
<p:commandButton value=”Submit” oncomplete=”handleComplete(xhr, status, args)” actionListener=”#{bean.save}”/>
function handleComplete(xhr, status, args) {var saved = args.saved;
}
Unobstrusive<p:schedule value=”#{bean.mode}” editable=”true”/>
<div id=”_gen”></div> <script type=”text/javascript”>
new PrimeFaces.widget.Schedule(‘_gen’, {editable:true}); </script>
JSF Page:
Renders:
You get:
Progressive Enhancement<p:button value=”Submit” />
<button id=”gen”>Submit</button> <script type=”text/javascript”>
new PrimeFaces.widget.Button(‘_gen’); </script>
JSF Page:
Renders:
You get:
Themes
Integrated with ThemeRoller
25+ Built-in Themes
Online ThemeCreator to create your own easily
Theme Gallery
How to Create Your Own
No need to know CSS
Disable default skin
See: http://vimeo.com/14235640
<context-param><param-name>primefaces.skin</param-name><param-value>none</param-value>
</context-param>
PrimeFaces Demo
Ajax Push
Powered by Atmosphere Framework
Currently Proof-of-Concept (http-streaming)
Future;
WebSockets, Long-Polling, Http-Streaming
TouchFaces
Mobile UI components
Optimized for webkit (eg IPhone, Android)
Native looking webapps
jqtouch based
TouchFaces Demo
Translate Chat - Ajax Push PathFinder - GPS TwitFaces
Weather Notes News
Integration
Spring Core
Spring WebFlow
Seam
CDI
Portlets
IDE Support
Documentation
400+ pages (for now)
Component reference, examples, tips
Community Support
Huge community, 500 posts every week
Enterprise Support
Fast reponse times
Priority forum access
Custom component development
http://www.primefaces.org/support.html
2.2 Trailer
Trainings
Prime Technology Courses (onsite and online);
JSF2 and PrimeFaces
JSF2 - Spring - JPA (popular)
JSF - Seam - JPA
JSF2 - CDI- JPA (Java EE 6)
and more
www.prime.com.tr/training.html
