org.springframework.web.portlet.context
Class PortletApplicationContextUtils

java.lang.Object
  org.springframework.web.portlet.context.PortletApplicationContextUtils

public abstract class PortletApplicationContextUtils
extends java.lang.Object

Convenience methods for retrieving the root WebApplicationContext for a given PortletContext. This is e.g. useful for accessing a Spring context from within custom Portlet implementations.

Since:

2.0

Author:

Juergen Hoeller, John A. Lewis

See Also:

ContextLoader, WebApplicationContextUtils, FrameworkPortlet, DispatcherPortlet

Nested Class Summary

private static class	PortletApplicationContextUtils.RequestObjectFactory Factory that exposes the current request object on demand.
private static class	PortletApplicationContextUtils.SessionObjectFactory Factory that exposes the current session object on demand.
private static class	PortletApplicationContextUtils.WebRequestObjectFactory Factory that exposes the current WebRequest object on demand.

Constructor Summary

PortletApplicationContextUtils()

Method Summary

private static PortletRequestAttributes	currentRequestAttributes() Return the current RequestAttributes instance as PortletRequestAttributes.
static ApplicationContext	getRequiredWebApplicationContext(PortletContext pc) Find the root WebApplicationContext for this portlet application, which is typically loaded via ContextLoaderListener or ContextLoaderServlet.
static ApplicationContext	getWebApplicationContext(PortletContext pc) Find the root WebApplicationContext for this portlet application, which is typically loaded via ContextLoaderListener or ContextLoaderServlet.
(package private) static void	registerEnvironmentBeans(ConfigurableListableBeanFactory bf, javax.servlet.ServletContext sc, PortletContext pc, PortletConfig config) Register web-specific environment beans ("contextParameters", "contextAttributes") with the given BeanFactory, as used by the Portlet ApplicationContext.
(package private) static void	registerPortletApplicationScopes(ConfigurableListableBeanFactory beanFactory, PortletContext pc) Register web-specific scopes ("request", "session", "globalSession") with the given BeanFactory, as used by the Portlet ApplicationContext.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

PortletApplicationContextUtils

public PortletApplicationContextUtils()

Method Detail

getWebApplicationContext

public static ApplicationContext getWebApplicationContext(PortletContext pc)

Find the root WebApplicationContext for this portlet application, which is typically loaded via ContextLoaderListener or ContextLoaderServlet.

Will rethrow an exception that happened on root context startup, to differentiate between a failed context startup and no context at all.

Parameters:

pc - PortletContext to find the web application context for

Returns:

the root WebApplicationContext for this web app, or null if none (typed to ApplicationContext to avoid a Servlet API dependency; can usually be casted to WebApplicationContext, but there shouldn't be a need to)

See Also:

WebApplicationContext.ROOT_WEB_APPLICATION_CONTEXT_ATTRIBUTE

getRequiredWebApplicationContext

public static ApplicationContext getRequiredWebApplicationContext(PortletContext pc)
                                                           throws java.lang.IllegalStateException

Find the root WebApplicationContext for this portlet application, which is typically loaded via ContextLoaderListener or ContextLoaderServlet.

Will rethrow an exception that happened on root context startup, to differentiate between a failed context startup and no context at all.

Parameters:

pc - PortletContext to find the web application context for

Returns:

the root WebApplicationContext for this web app (typed to ApplicationContext to avoid a Servlet API dependency; can usually be casted to WebApplicationContext, but there shouldn't be a need to)

Throws:

java.lang.IllegalStateException - if the root WebApplicationContext could not be found

See Also:

WebApplicationContext.ROOT_WEB_APPLICATION_CONTEXT_ATTRIBUTE

registerPortletApplicationScopes

static void registerPortletApplicationScopes(ConfigurableListableBeanFactory beanFactory,
                                             PortletContext pc)

Register web-specific scopes ("request", "session", "globalSession") with the given BeanFactory, as used by the Portlet ApplicationContext.

Parameters:

beanFactory - the BeanFactory to configure

pc - the PortletContext that we're running within

registerEnvironmentBeans

static void registerEnvironmentBeans(ConfigurableListableBeanFactory bf,
                                     javax.servlet.ServletContext sc,
                                     PortletContext pc,
                                     PortletConfig config)

Register web-specific environment beans ("contextParameters", "contextAttributes") with the given BeanFactory, as used by the Portlet ApplicationContext.

Parameters:

bf - the BeanFactory to configure

sc - the ServletContext that we're running within

pc - the PortletContext that we're running within

config - the PortletConfig of the containing Portlet

currentRequestAttributes

private static PortletRequestAttributes currentRequestAttributes()

Return the current RequestAttributes instance as PortletRequestAttributes.

See Also:

RequestContextHolder.currentRequestAttributes()