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JSF 2.3: More CDI alignments

More CDI alignments

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 facilites are exposed as CDI beans, and can be injected as general CDI beans.
In JSF 2.2, to get JSF facilites.
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 facilites 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<String, Object>
CompositeComponent #{cc} (Not injectable) javax.faces.component.UIComponent
Component #{component} (Not injectable) javax.faces.component.UIComponent
RequestCookieMap #{cookie} @RequestCookieMap java.util.Map<String, Object>
FacesContext #{facesContext} - javax.faces.context.FacesContext
Flash #{flash} - javax.faces.context.Flash
FlowMap #{flowScope} @FlowMap java.util.Map<Object, Object>
HeaderMap #{header} @HeaderMap java.util.Map<String, String>
HeaderValuesMap #{headerValues} @HeaderValuesMap java.util.Map<String, String[]>
InitParameterMap #{initParam} @InitParameterMap java.util.Map<String, String>
RequestParameterMap #{param} @RequestParameterMap java.util.Map<String, String>
RequestParameterValuesMap #{paramValues} @RequestParameterValuesMap java.util.Map<String, String[]>
Request #{request} (Not injectable) java.lang.Object (javax.servlet.http.HttpServletRequest)
RequestMap #{requestScope} @RequestMap java.util.Map<String, Object>
ResourceHandler #{"resource"} - javax.faces.application.ResourceHandler
Session #{session} (Not injectable) java.lang.Object (javax.servlet.http.HttpSession)
SessionMap #{sessionScope} @SessionMap java.util.Map<String, Object>
View #{view} - javax.faces.component.UIViewRoot
ViewMap #{viewScope} @ViewMap java.util.Map<String, Object>
ExternalContext #{externalContext} (new) - javax.faces.context.ExternalContext

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