CDI Portlet Predefined Beans

Liferay DXP provides injectable portlet artifacts for CDI called Portlet Predefined Beans, as specified by JSR 362. There are two types of predefined beans:

Portlet Request Scoped Beans (@PortletRequestScoped
Dependent Scoped Beans (@Dependent scoped)

The table below describes these attributes for each bean:

Artifact: The bean’s type.

Bean EL Name: Expression Language (EL) name for accessing the bean in a JSP or JSF page.

Qualifier: Annotation applied to the bean for defining and selecting a bean implementation.

Valid during (phase): The portlet phases in which the bean is valid.

Portlet Request Scoped Beans

These beans have the @PortletRequestScoped annotation. Here are their artifact types, bean EL names, and annotation qualifiers, along with their valid portlet phases.

Table 1: Portlet Request Scoped Beans¹

Artifact	Bean EL Name	Qualifier	Valid during
`PortletConfig`	`portletConfig`	-	all
`PortletRequest`	`portletRequest`	-	all
`PortletResponse`	`portletResponse`	-	all
`ActionRequest`	`actionRequest`	-	action
`ActionResponse`	`actionResponse`	-	action
`HeaderRequest`	`headerRequest`	-	header
`HeaderResponse`	`headerResponse`	-	header
`RenderRequest`	`renderRequest`	-	render
`RenderResponse`	`renderResponse`	-	render
`EventRequest`	`eventRequest`	-	event
`EventResponse`	`eventResponse`	-	event
`ResourceRequest`	`resourceRequest`	-	resource
`ResourceResponse`	`resourceResponse`	-	resource
`StateAwareResponse`	`stateAwareResponse`	-	action, event
`MimeResponse`	`mimeResponse`	-	header, render, resource
`ClientDataRequest`	`clientDataRequest`	-	action, resource
`RenderParameters`	`renderParams`	-	all
`MutableRenderParameters`	`mutableRenderParams`	-	action, event
`ActionParameters`	`actionParams`	-	action
`ResourceParameters`	`resourceParams`	-	resource
`PortletContext`	`portletContext`	-	all
`PortletMode`	`portletMode`	-	all
`WindowState`	`windowState`	-	all
`PortletPreferences`	`portletPreferences`	-	all
`Cookies(List<Cookie>)`	`cookies`	-	all
`PortletSession`	`portletSession`	-	all
`Locales(List<Locale>)`	`locales`	-	all

These beans use the @Dependent scope. They’re of type java.lang.String, which is final. This disqualifies them from being proxied. To prevent using dependent scoped beans in a scope broader than their original scope, you should only inject them into @PortletRequestScoped beans.

Table 2: Dependent Scoped Beans²

Artifact	Bean EL Name	Qualifier	Valid during
`Namespace` (String)	`namespace`	`@Namespace`	all
`ContextPath` (String)	`contextPath`	`@ContextPath`	all
`WindowID` (String)	`windowId`	`@WindowId`	all
`Portlet name` (String)	`portletName`	`@PortletName`	all

CDI Dependency Injection

Martin Scott Nicklous, Java™ Portlet Specification 3.0, page 122.
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Martin Scott Nicklous, Java™ Portlet Specification 3.0, page 123.
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