JSF 2.0 New Features

Source: Internet
Author: User
JSF 2.0Proposal has been posted on March 2007 and planned for the release in last quarter of 2008. It will be shipped Jee 6.0Release. Looking into
Features lits of JSF 2.0, It is added lots of interesting features in the list and also they are aiming to attract more new developers to use JSFTechnology.

JSF 2.0 features

Some of the interesting features between desBookmarking for URLs, expanding the existing lifecycle mechanic, more support
ForAjaxRequests, use annotations instead of faces-config.xml, introducing jsftemplating concepts
And much more. It seems
The list size is big It will be great to see when the final version is released. Basically it is categorized into four parts:
Development of development,New Features, Performance and adoption. We will look into the each category with brief explanation. This tips based onJsr314And the features list is taken from the original JSR document.

Development of Development
  • Component aggregation. allow development of M component
    Little or no Java coding. [a] perhaps consider a standard set
    Aggregations.
  • Allow for "Zero Configuration" Web applications. No
    Faces-config.xml, no web. xml. If necessary, annotations will be used
    Supplement the configuration data.
  • Vastly improve the developer experience with regard to error
    Messages that happen during iterative development, and even
    Deployment of the application. For example the EG will consider options
    Including, allowing the developer to tell the runtime what stage
    Development the web application is in, and take action accordingly:
    Development, test, deployment. Line precise error reporting. pluggable
    Exception Handling.
  • Provide default exception handling mechanisms. For example, all runtime errors get forwarded to an error page.
  • Eliminate the need to author a JSP tag handler when writing JSF components.
  • Leverage annotations to declare JSF artifacts (components, managed beans, navigation rules, etc) to the runtime.
  • Declarative renderers, otherwise known as renderers without resorting to out. println ().
  • Real World, production view description technology, including
    Templating: Include something influenced by facelets, jsftemplating or
    Tiles in the specification.
  • Make it very easy to create crud based applications.
New Features
  • Expand the request processing lifecycle to be aware of Ajax. This
    May include describing a small developer-contract footprint Javascript
    Library as part of the assumerver faces specification.
  • Separate the "build the tree" and "render the tree" processes into two separate lifecycle phases.
  • Allow for partial tree traversel during lifecycle execution via Ajax.
  • Allow for bookmarkable JSF pages. More broadly, if http get can be used, it shocould be used.
  • Decent client side, inter-component and form-level validation (leveraging JSR-303 validation if possible ).
  • First class support for bundling and delivering static Resources
    Associated with a component: images, stylesheets, scripts, etc. shold
    Be able to specify default locations for resources.
  • Strategic additions to the standard HTML renderkit: Date Picker, tree, Tab View, File Upload components.
  • Provide a mechanic to minimize the "Lost Update" and "duplicate
    Button press "problems. These mechanisms must be pluggable or
    Customizable from the user.
  • Page Actions: the ability to say, "When this page loads, invoke this action (via Ajax if necessary )."
  • Provide a mechanic to easily access persistent store.
Performance
  • Saving and restoring page deltas rather than saving and restoring the full view State each time.
  • Re-do uicomponent state saving with a view towards making stateless components the default.
  • Allow for moving as much of the event processing and inter-page
    Component interaction into the client as possible. This may imply
    Specifying Client Side controller framework.
  • Streamline the rendering process via caching if possible.
  • Improve the interceptor mechanic delivered via the phaselistener
    Feature so that the developer can control exactly what kinds
    Requests are allowed to be processed by each phaselistener instance.
Adoption
  • Enable components to have a client based lifecycle in addition,
    Or instead of the server based request/response lifecycle. Such
    Client based lifecycle wocould enable use-cases such as drag-and-drop,
    Master-detail and sub-dialogs on a single page Interface Web
    Application.
  • Improve the uicomponent specification to allow an increase in
    Interoperability of uicomponent libraries from arbitrary vendors.
  • Enable applications to use features that are defined in
    Extends erver faces specification but are intended for use in the Java EE
    Platform as a whole. For example, the managed bean facility is useful
    Even in an application that only uses servlets from Java EE
    Provides the rest of the Web application features from software outside
    Of the platform.
  • Allow JSF application resources to be accessed via rest.
  • Enable components that publish events via RSS/atom.
  • Add support for rest (jsr311)
  • Broad and pervasive support for scripting at all levels of
    Specification. It will be possible to use a scripting language to write
    All executable artifacts in a JSF application.
  • Specify command line interface for authoring JSF applications.
  • Support for passing values from page to page. This will be
    Standardization of the specified different dialog/conversation/scope/flash
    Ideas currently in use.
  • "Skinning", or "themeing" of components.
  • An important target user for assumerver faces technology is
    Developer who relies on an Internet Service Provider (ispv) to host
    Their application, as well as hosting their development environment. It
    Must be easy to iteratively develop a assumerver faces application that
    Is hosted entirely on an ISP.

From: http://www.javabeat.net/tips/116-new-features-in-jsf-20.html

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