CDI alignment

JSF 2.2 starts CDI integration, provides built-in CDI compatible ViewScoped and @FlowScoped, and all CDI scopes are compatible with JSF.

In JSF 2.3, more CDI alignments are added.

A lots of JSF built-in facilities are exposed as CDI beans, and can be injected as general CDI beans.

In JSF 2.2, to get JSF facilities.

FacesContext context= FacesContext.getCurrentInstance();
ExternalContext externalContext = FacesContext.getCurrentInstance().getExternalContext();
Map<String, Object> cookieMap = FacesContext.getCurrentInstance().getExternalContext().getRequestCookieMap();
Map<String, Object> viewMap = FacesContext.getCurrentInstance().getViewRoot().getViewMap();

In JSF 2.3, you can inject them directly in your backing bean.

@Inject
FacesContext facesContext;

@Inject
ExternalContext externalContext;

@Inject
@RequestCookieMap
Map<String, Object> cookieMap;

@Inject
@ViewMap
Map<String, Object> viewMap;

And all of these can be resolved via EL in facelets template.

There is a table listed all supported facilities in Arjan Tijms's blog entry, What's new in JSF 2.3? .

Artifact	EL name	Qualifier	Type
Application	#{application}	-	java.lang.Object (javax.servlet.ServletContext)
ApplicationMap	#{applicationScope}	@ApplicationMap	java.util.Map
CompositeComponent	#{cc}	(Not injectable)	javax.faces.component.UIComponent
Component	#{component}	(Not injectable)	javax.faces.component.UIComponent
RequestCookieMap	#{cookie}	@RequestCookieMap	java.util.Map
FacesContext	#{facesContext}	-	javax.faces.context.FacesContext
Flash	#{flash}	-	javax.faces.context.Flash
FlowMap	#{flowScope}	@FlowMap	java.util.Map
HeaderMap	#{header}	@HeaderMap	java.util.Map
HeaderValuesMap	#{headerValues}	@HeaderValuesMap	java.util.Map
InitParameterMap	#{initParam}	@InitParameterMap	java.util.Map
RequestParameterMap	#{param}	@RequestParameterMap	java.util.Map
RequestParameterValuesMap	#{paramValues}	@RequestParameterValuesMap	java.util.Map
Request	#{request}	(Not injectable)	java.lang.Object (javax.servlet.http.HttpServletRequest)
RequestMap	#{requestScope}	@RequestMap	java.util.Map
ResourceHandler	#{"resource"}	-	javax.faces.application.ResourceHandler
Session	#{session}	(Not injectable)	java.lang.Object (javax.servlet.http.HttpSession)
SessionMap	#{sessionScope}	@SessionMap	java.util.Map
View	#{view}	-	javax.faces.component.UIViewRoot
ViewMap	#{viewScope}	@ViewMap	java.util.Map
ExternalContext	#{externalContext} (new)	-	javax.faces.context.ExternalContext