ICEfaces and JSF 2.0 on GlassFish

www.icefaces.org

ICEfaces is… ICEfaces is an Ajax framework that allows developers to easily create rich Internet applications (RIA) in pure Java. • Open source • Standards-based • Extends JavaServer Faces • Develop rich Web Applications in pure Java, not JavaScript • Integrated with GlassFish and Friends – Provides NetBeans IDE Plugin • Endorsed migration for Woodstock users – Supports Ajax Push applications via Grizzly – Leverages enterprise capabilities of GlassFish • Security, Scalability: Clustering, Load Balancing and Failover – Integrates with 3rd Party frameworks and middleware • WebSpace, WebStack Easy Ajax for Java developers www.icefaces.org

Agenda • Ajax Push Overview • Application Programming Basics • On the Wire • Code Walkthrough • Asynchronous Request Processing • Security • Custom Components (JSF 1.2 and JSF 2.0) • JSF 2.0 Ajax • JSF 2.0 Notable Enhancements • Summary www.icefaces.org

Multi-user AuctionMonitor www.icefaces.org

Multi-user Locking Ted selects record for editing www.icefaces.org

Multi-user Locking Joe selects same record, requests lock www.icefaces.org

Multi-user Locking Ted responds, and accepts or denies www.icefaces.org

Push in Portlets Portal page with three portlets www.icefaces.org

Push in Portlets Joe searches for a city www.icefaces.org

Push in Portlets All three portlets are updated www.icefaces.org

Ajax Push Illustrated Ted Server Deryk www.icefaces.org

Ajax Push Illustrated Ajax Request Ted Server Deryk www.icefaces.org

Ajax Push Illustrated JSF Lifecycle + DOM diff Ted Server Deryk www.icefaces.org

Ajax Push Illustrated Ajax Response Ted Server Ajax Push Deryk www.icefaces.org

What is Ajax Push For? • Distance learning • Collaborative authoring • Auctions • Shared WebDAV filesystem • Blogging and reader comments • SIP-coordinated mobile applications • Hybrid chat/email/discussion forums • Customer assistance on sales/support pages • Multi-step business process made collaborative • Shared trip planner or restaurant selector with maps • Shared calendar, “to do” list, project plan • Games • Enterprise shared record locking and negotiation www.icefaces.org

Ajax Programming, Ideally. PageBean.java Page.xhtml <f:view public class PageBean { xmlns:f=“http://java.sun.com/jsf/core” String message; xmlns:h=quot;http://java.sun.com/jsf/html“ > public String getMessage() { <html> return message; <body> } <h:form> <h:inputText public void value=“#{pageBean.message}” /> setMessage(String message) { </h:form> this.message = message; </body> } </html> } </f:view> Presentation Model Declarative User Interface www.icefaces.org

Ajax Push Programming To keep track of groups of users: SessionRenderer.addCurrentSession(“GlassFishTV”); Asynchronously and elsewhere in the application ... presentation.setSlide(7); SessionRenderer.render(“GlassFishTV”); www.icefaces.org

Ajax Push Techniques • Poll – send a request to the server at some interval – response is “empty” if there is no update • Http Streaming – send a request and wait for response – write “endless” response in chunks • Long Poll – send a request to the server and wait for response – indistinguishable from “slow” server www.icefaces.org

Long Polling over HTTP GET /auctionMonitor/block/receive-updates?icefacesID=1209765435 HTTP/1.1 Accept: */* Cookie: JSESSIONID=75CF2BF3E03F0F9C6D2E8EFE1A6884F4 Connection: keep-alive Host: vorlon.ice:18080 www.icefaces.org

Long Polling over HTTP GET /auctionMonitor/block/receive-updates?icefacesID=1209765435 HTTP/1.1 Accept: */* Cookie: JSESSIONID=75CF2BF3E03F0F9C6D2E8EFE1A6884F4 Connection: keep-alive Host: vorlon.ice:18080 Chat message “Howdy” www.icefaces.org

Long Polling over HTTP GET /auctionMonitor/block/receive-updates?icefacesID=1209765435 HTTP/1.1 Accept: */* Cookie: JSESSIONID=75CF2BF3E03F0F9C6D2E8EFE1A6884F4 Connection: keep-alive Host: vorlon.ice:18080 Chat message “Howdy” HTTP/1.1 200 OK Content-Type: text/xml;charset=UTF-8 Content-Length: 180 Date: Tue, 10 Mar 2009 22:49:49 GMT Server: Sun Java System Application Server 9.1_01 <updates> <update address=quot;_id0:_id5:0:chatTextquot;> <span id=quot;_id0:_id5:0:chatTextquot;>Howdy</span> </update> </updates> www.icefaces.org

webmc.jspx <f:view xmlns:f=quot;http://java.sun.com/jsf/corequot; xmlns:h=quot;http://java.sun.com/jsf/htmlquot;> <html> <head> <title>WebMC</title> </head> <body> <h3>WebMC</h3> <h:form> <h:panelGrid columns=quot;1quot;> <h:outputText value=quot;Presentationquot;/> <h:graphicImage value=quot;#{user.slideURL}quot;/> </h:panelGrid> <h:panelGrid columns=quot;1quot; > <h:outputText value=quot;Chatquot;/> <h:outputText value=quot;#{user.chatLog}quot;/> <h:inputText value=quot;#{user.chatInput}quot;/> <h:commandButton actionListener=quot;#{user.submit}quot;/> </h:panelGrid> www.icefaces.org

UserBean.java public class UserBean { public String getSlideURL() { Set by presentation moderator return slideURL; slide controls } public String getChatLog() { return chatLog; } public String getChatInput() { return chatInput; } public void setChatInput(String text) { chatInput = text; append(chatLog, text); } } www.icefaces.org

UserBean.java (Ajax Push) import com.icesoft.faces.async.render.SessionRenderer; public class UserBean { String presentationName; public UserBean() { presentationName = LoginBean.getPresentationName(); SessionRenderer.addCurrentSession(presentationName); } public void submit() { SessionRenderer.render(presentationName); } } www.icefaces.org

Ajax Components with ICEfaces • Automatic Ajax updates • No JavaScript Development • Easy Ajax Component Suite – No JavaScript component wiring – No manually defined update regions • Ajax transport handled by ICEfaces • Woodstock conversion: utilities and compatible components • --- – Asynchronous application-driven browser updates – All 50+ components are Ajax Push aware www.icefaces.org

A Thread for Every Client? • Blocking requests with Servlet 2.5 consumes threads • GlassFish/Grizzly, Tomcat 6, Jetty, and Servlet 3.0 provide asynchronous request processing • Many connections handled with a small thread pool www.icefaces.org

GlassFish Suspend with Grizzly. CometContext context = CometEngine.getEngine().register(contextPath); context.setExpirationDelay(20 * 1000); SuspendableHandler handler = new SuspendableHandler(); handler.attach(response); cometContext.addCometHandler(handler); class SuspendableHandler implements CometHandler { public void onEvent(CometEvent event) { response.getWriter().println(event.attachment()); cometContext.resumeCometHandler(this); } Asynchronously and elsewhere in the application ... presentation.setSlide(7); cometContext.notify(message); www.icefaces.org

Multiple Applications and Browser Connection Limits http:// host / ajaxpush / Asynchronous Connections Glassfish Grizzly Ajax Push Server ICEfaces ICEfaces JMS Application Application www.icefaces.org

Security for Ajax Push • Build security in layers – Java – JavaServer Faces – SSL • Script injection – JavaScript – SQL • Cross-site request forgery • Cross-site scripting www.icefaces.org

Custom Components (JSF 1.2) • Implement MyComponent.java extending UIInput • Implement MyComponentRenderer.java • Implement MyComponentTag.java • Add component and renderer to faces-config.xml • Add MyComponentTag to TLD www.icefaces.org

Facelets in JSF 2 • Facelets now part of JSF standard • Also know as the Page Declaration Language (PDL)‫‏‬ • First non-JSP PDL designed for JSF • Some differences from JSP: – Pages compiled to abstract structure – Builds JSF component view when executed – Don't need TLD for tag attributes – Page templating • Opens the door for easier component development www.icefaces.org

Custom Components in JSF 2 • Components built via markup templates • Also known as composite components • Composite Component: any Facelet markup file that resides in a resource library • Custom components can also be developed in Java as per JSF 1.2 www.icefaces.org

Custom Components in JSF 2 (Use) www.icefaces.org

Custom Components in JSF 2 (Definition) www.icefaces.org

Ajax in JSF 2.0 • Resource Delivery Mechanism • Partial View Processing • Partial View Rendering • Ajax Client/Server In JSF 2.0 Spec In Component Library • Ajax Enabled Components www.icefaces.org

Ajax in JSF 2 Partial View Processing Ajax Request execute:4,5 Apply Request Process Restore View Validations Values Render Invoke Update Model 1 Response Application Values 2 3 Execute Portion 4 5 www.icefaces.org

Ajax in JSF 2 Partial View Rendering Ajax Request render:4,5 Apply Request Process Restore View Validations Values Render Invoke Update Model 1 Response Application Values 2 3 Render Portion 4 5 www.icefaces.org

Ajax in JSF 2 • Standard JavaScript API – jsf.ajax.request, jsf.ajax.response – jsf.ajax.addOnError, jsf.ajax.addOnEvent – jsf.getProjectStage, jsf.getViewState • Standard Response Format – XML based – “instruction set” for: – updating DOM, attribute changes, script execution – inserting into DOM, deleting DOM nodes, extensions • Standard Subtree Execution and Rendering – frameworks may also plug in their own traversal strategy • Declarative Ajax (f:ajax)‫‏‬ • Net result is Ajax component interoperability www.icefaces.org

Enhancements in JSF 2 • System Events – Represent specific points in time for a JSF application – For example, listen for: – when a component was added to parent – when a component is about to be rendered – Listeners implement javax.faces.event.SystemEventListener • “view” scope – allows attributes to be associated with a view – attributes persist until a new view is navigated to – can be accessed via EL (like request or session)‫‏‬ • Annotations – An alternative to XML configuration – @FacesComponent, @FacesConverter, @ManagedBean – @RequestScoped, @SessionScoped, @ApplicationScoped www.icefaces.org

Enhancements in JSF 2 • Resources – Facility for serving resources (CSS, JavaScript, images, etc..)‫‏‬ – Can be packaged under web application – Under “resources” directory – Or into classpath under META-INF/resources – Typically reside in libraries – Resources can be versioned • Exceptions – Exception handling facility allows queuing of exceptions – Also leverages System Event facility – publish ExceptionEvent(s); subscribe to ExceptionEvent(s)‫‏‬ www.icefaces.org

Summary The Asynchronous Web Revolution is Now • Ajax Push will revolutionize human interaction • Ajax Push is the key to enterprise collaboration for the Web • JSF 2.0 is the language for developing web applications • Ajax Push can scale on GlassFish with Asynchronous Request Processing • ICEfaces provides the high-level capabilities for enterprise collaboration features in your application www.icefaces.org www.icefaces.org ICESOFT TECHNOLOGIES INC.

Thank You Contact Us: Toll Free: +1 877 263 3822 USA International: +1 403 663 3322 product.support@icesoft.com www.icefaces.org 44

ICEfaces and JSF 2.0 on GlassFish

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