Class FrameworkPortlet
- java.lang.Object
- javax.portlet.GenericPortlet
- org.springframework.web.portlet.GenericPortletBean
- org.springframework.web.portlet.FrameworkPortlet
- All Implemented Interfaces:
EventListener
,EventPortlet
,Portlet
,PortletConfig
,ResourceServingPortlet
,Aware
,ApplicationListener<ContextRefreshedEvent>
,EnvironmentAware
,EnvironmentCapable
- Direct Known Subclasses:
DispatcherPortlet
public abstract class FrameworkPortlet extends GenericPortletBean implements ApplicationListener<ContextRefreshedEvent>
Base portlet for Spring's portlet framework. Provides integration with a Spring application context, in a JavaBean-based overall solution.This class offers the following functionality:
- Manages a Portlet
ApplicationContext
instance per portlet. The portlet's configuration is determined by beans in the portlet's namespace. - Publishes events on request processing, whether or not a request is successfully handled.
Subclasses must implement
doActionService(javax.portlet.ActionRequest, javax.portlet.ActionResponse)
anddoRenderService(javax.portlet.RenderRequest, javax.portlet.RenderResponse)
to handle action and render requests. Because this extendsGenericPortletBean
rather than Portlet directly, bean properties are mapped onto it. Subclasses can overrideinitFrameworkPortlet()
for custom initialization.Regards a "contextClass" parameter at the portlet init-param level, falling back to the default context class (
XmlPortletApplicationContext
) if not found. Note that, with the default FrameworkPortlet, a context class needs to implement theConfigurablePortletApplicationContext
SPI.Passes a "contextConfigLocation" portlet init-param to the context instance, parsing it into potentially multiple file paths which can be separated by any number of commas and spaces, like "test-portlet.xml, myPortlet.xml". If not explicitly specified, the context implementation is supposed to build a default location from the namespace of the portlet.
Note: In case of multiple config locations, later bean definitions will override ones defined in earlier loaded files, at least when using one of Spring's default ApplicationContext implementations. This can be leveraged to deliberately override certain bean definitions via an extra XML file.
The default namespace is "'portlet-name'-portlet", e.g. "test-portlet" for a portlet-name "test" (leading to a "/WEB-INF/test-portlet.xml" default location with XmlPortletApplicationContext). The namespace can also be set explicitly via the "namespace" portlet init-param.
- Since:
- 2.0
- Author:
- William G. Thompson, Jr., John A. Lewis, Juergen Hoeller
- See Also:
doActionService(javax.portlet.ActionRequest, javax.portlet.ActionResponse)
,doRenderService(javax.portlet.RenderRequest, javax.portlet.RenderResponse)
,setContextClass(java.lang.Class<?>)
,setContextConfigLocation(java.lang.String)
,setNamespace(java.lang.String)
Field Summary
Fields Modifier and Type Field Description static Class<?>
DEFAULT_CONTEXT_CLASS
Default context class for FrameworkPortlet.static String
DEFAULT_NAMESPACE_SUFFIX
Suffix for Portlet ApplicationContext namespaces.static String[]
DEFAULT_USERINFO_ATTRIBUTE_NAMES
Default USER_INFO attribute names to search for the current username: "user.login.id", "user.name".static String
PORTLET_CONTEXT_PREFIX
Prefix for the PortletContext attribute for the Portlet ApplicationContext.Fields inherited from class org.springframework.web.portlet.GenericPortletBean
logger
Constructor Summary
Constructors Constructor Description FrameworkPortlet()
Method Summary
All Methods Instance Methods Abstract Methods Concrete Methods Modifier and Type Method Description protected LocaleContext
buildLocaleContext(PortletRequest request)
Build a LocaleContext for the given request, exposing the request's primary locale as current locale.protected ApplicationContext
createPortletApplicationContext(ApplicationContext parent)
Instantiate the Portlet ApplicationContext for this portlet, either a default XmlPortletApplicationContext or a custom context class if set.void
destroy()
Close the ApplicationContext of this portlet.protected abstract void
doActionService(ActionRequest request, ActionResponse response)
Subclasses must implement this method to do the work of action request handling.protected void
doDispatch(RenderRequest request, RenderResponse response)
Delegate render requests to processRequest/doRenderService.protected abstract void
doEventService(EventRequest request, EventResponse response)
Subclasses must implement this method to do the work of event request handling.protected abstract void
doRenderService(RenderRequest request, RenderResponse response)
Subclasses must implement this method to do the work of render request handling.protected abstract void
doResourceService(ResourceRequest request, ResourceResponse response)
Subclasses must implement this method to do the work of resource request handling.Class<?>
getContextClass()
Return the custom context class.String
getContextConfigLocation()
Return the explicit context config location, if any.String
getNamespace()
Return the namespace for this portlet, falling back to default scheme if no custom namespace was set.ApplicationContext
getPortletApplicationContext()
Return this portlet's ApplicationContext.String
getPortletContextAttributeName()
Return the PortletContext attribute name for this portlets's ApplicationContext.protected String
getTitle(RenderRequest renderRequest)
Overridden for friendlier behavior in unit tests.protected String
getUsernameForRequest(PortletRequest request)
Determine the username for the given request.protected void
initFrameworkPortlet()
This method will be invoked after any bean properties have been set and the ApplicationContext has been loaded.protected ApplicationContext
initPortletApplicationContext()
Initialize and publish the Portlet ApplicationContext for this portlet.protected void
initPortletBean()
Overridden method of GenericPortletBean, invoked after any bean properties have been set.void
onApplicationEvent(ContextRefreshedEvent event)
ApplicationListener endpoint that receives events from this servlet's WebApplicationContext.protected void
onRefresh(ApplicationContext context)
Template method which can be overridden to add portlet-specific refresh work.protected void
postProcessPortletApplicationContext(ConfigurableApplicationContext pac)
Post-process the given Portlet ApplicationContext before it is refreshed and activated as context for this portlet.void
processAction(ActionRequest request, ActionResponse response)
Delegate action requests to processRequest/doActionService.void
processEvent(EventRequest request, EventResponse response)
protected void
processRequest(PortletRequest request, PortletResponse response)
Process this request, publishing an event regardless of the outcome.void
refresh()
Refresh this portlet's application context, as well as the dependent state of the portlet.void
serveResource(ResourceRequest request, ResourceResponse response)
void
setContextClass(Class<?> contextClass)
Set a custom context class.void
setContextConfigLocation(String contextConfigLocation)
Set the context config location explicitly, instead of relying on the default location built from the namespace.void
setNamespace(String namespace)
Set a custom namespace for this portlet, to be used for building a default context config location.void
setPublishContext(boolean publishContext)
Set whether to publish this portlet's context as a PortletContext attribute, available to all objects in the web container.void
setPublishEvents(boolean publishEvents)
Set whether this portlet should publish a PortletRequestHandledEvent at the end of each request.void
setThreadContextInheritable(boolean threadContextInheritable)
Set whether to expose the LocaleContext and RequestAttributes as inheritable for child threads (using anInheritableThreadLocal
).void
setUserinfoUsernameAttributes(String[] userinfoUsernameAttributes)
Set the list of attributes to search in the USER_INFO map when trying to find the username of the current user.Methods inherited from class org.springframework.web.portlet.GenericPortletBean
addRequiredProperty, createEnvironment, getEnvironment, getPortletContext, getPortletName, init, initBeanWrapper, setEnvironment
Methods inherited from class javax.portlet.GenericPortlet
doEdit, doHeaders, doHelp, doView, getContainerRuntimeOptions, getDefaultNamespace, getInitParameter, getInitParameterNames, getNextPossiblePortletModes, getPortletConfig, getProcessingEventQNames, getPublicRenderParameterNames, getPublishingEventQNames, getResourceBundle, getSupportedLocales, init, render
Field Detail
DEFAULT_CONTEXT_CLASS
public static final Class<?> DEFAULT_CONTEXT_CLASS
Default context class for FrameworkPortlet.- See Also:
XmlPortletApplicationContext
DEFAULT_NAMESPACE_SUFFIX
public static final String DEFAULT_NAMESPACE_SUFFIX
Suffix for Portlet ApplicationContext namespaces. If a portlet of this class is given the name "test" in a context, the namespace used by the portlet will resolve to "test-portlet".- See Also:
- Constant Field Values
PORTLET_CONTEXT_PREFIX
public static final String PORTLET_CONTEXT_PREFIX
Prefix for the PortletContext attribute for the Portlet ApplicationContext. The completion is the portlet name.
DEFAULT_USERINFO_ATTRIBUTE_NAMES
public static final String[] DEFAULT_USERINFO_ATTRIBUTE_NAMES
Default USER_INFO attribute names to search for the current username: "user.login.id", "user.name".
Constructor Detail
FrameworkPortlet
public FrameworkPortlet()
Method Detail
setContextClass
public void setContextClass(Class<?> contextClass)
Set a custom context class. This class must be of type ApplicationContext; when using the default FrameworkPortlet implementation, the context class must also implement ConfigurablePortletApplicationContext.
getContextClass
public Class<?> getContextClass()
Return the custom context class.
setNamespace
public void setNamespace(String namespace)
Set a custom namespace for this portlet, to be used for building a default context config location.
getNamespace
public String getNamespace()
Return the namespace for this portlet, falling back to default scheme if no custom namespace was set. (e.g. "test-portlet" for a portlet named "test")
setContextConfigLocation
public void setContextConfigLocation(String contextConfigLocation)
Set the context config location explicitly, instead of relying on the default location built from the namespace. This location string can consist of multiple locations separated by any number of commas and spaces.
getContextConfigLocation
public String getContextConfigLocation()
Return the explicit context config location, if any.
setPublishContext
public void setPublishContext(boolean publishContext)
Set whether to publish this portlet's context as a PortletContext attribute, available to all objects in the web container. Default is true.This is especially handy during testing, although it is debatable whether it's good practice to let other application objects access the context this way.
setPublishEvents
public void setPublishEvents(boolean publishEvents)
Set whether this portlet should publish a PortletRequestHandledEvent at the end of each request. Default is true; can be turned off for a slight performance improvement, provided that no ApplicationListeners rely on such events.- See Also:
PortletRequestHandledEvent
setThreadContextInheritable
public void setThreadContextInheritable(boolean threadContextInheritable)
Set whether to expose the LocaleContext and RequestAttributes as inheritable for child threads (using anInheritableThreadLocal
).Default is "false", to avoid side effects on spawned background threads. Switch this to "true" to enable inheritance for custom child threads which are spawned during request processing and only used for this request (that is, ending after their initial task, without reuse of the thread).
WARNING: Do not use inheritance for child threads if you are accessing a thread pool which is configured to potentially add new threads on demand (e.g. a JDK
ThreadPoolExecutor
), since this will expose the inherited context to such a pooled thread.
setUserinfoUsernameAttributes
public void setUserinfoUsernameAttributes(String[] userinfoUsernameAttributes)
Set the list of attributes to search in the USER_INFO map when trying to find the username of the current user.
initPortletBean
protected final void initPortletBean() throws PortletException
Overridden method of GenericPortletBean, invoked after any bean properties have been set. Creates this portlet's ApplicationContext.- Overrides:
initPortletBean
in classGenericPortletBean
- Throws:
PortletException
- if subclass initialization fails
initPortletApplicationContext
protected ApplicationContext initPortletApplicationContext()
Initialize and publish the Portlet ApplicationContext for this portlet.Delegates to
createPortletApplicationContext(org.springframework.context.ApplicationContext)
for actual creation. Can be overridden in subclasses.- Returns:
- the ApplicationContext for this portlet
createPortletApplicationContext
protected ApplicationContext createPortletApplicationContext(ApplicationContext parent)
Instantiate the Portlet ApplicationContext for this portlet, either a default XmlPortletApplicationContext or a custom context class if set.This implementation expects custom contexts to implement ConfigurablePortletApplicationContext. Can be overridden in subclasses.
- Parameters:
parent
- the parent ApplicationContext to use, or null if none- Returns:
- the Portlet ApplicationContext for this portlet
- See Also:
setContextClass(java.lang.Class<?>)
,XmlPortletApplicationContext
postProcessPortletApplicationContext
protected void postProcessPortletApplicationContext(ConfigurableApplicationContext pac)
Post-process the given Portlet ApplicationContext before it is refreshed and activated as context for this portlet.The default implementation is empty.
refresh()
will be called automatically after this method returns.- Parameters:
pac
- the configured Portlet ApplicationContext (not refreshed yet)- See Also:
createPortletApplicationContext(org.springframework.context.ApplicationContext)
,ConfigurableApplicationContext.refresh()
getPortletContextAttributeName
public String getPortletContextAttributeName()
Return the PortletContext attribute name for this portlets's ApplicationContext.The default implementation returns PORTLET_CONTEXT_PREFIX + portlet name.
getPortletApplicationContext
public final ApplicationContext getPortletApplicationContext()
Return this portlet's ApplicationContext.
initFrameworkPortlet
protected void initFrameworkPortlet() throws PortletException
This method will be invoked after any bean properties have been set and the ApplicationContext has been loaded.The default implementation is empty; subclasses may override this method to perform any initialization they require.
- Throws:
PortletException
- in case of an initialization exception
refresh
public void refresh()
Refresh this portlet's application context, as well as the dependent state of the portlet.
onApplicationEvent
public void onApplicationEvent(ContextRefreshedEvent event)
ApplicationListener endpoint that receives events from this servlet's WebApplicationContext.The default implementation calls
onRefresh(org.springframework.context.ApplicationContext)
in case of aContextRefreshedEvent
, triggering a refresh of this servlet's context-dependent state.- Specified by:
onApplicationEvent
in interfaceApplicationListener<ContextRefreshedEvent>
- Parameters:
event
- the incoming ApplicationContext event
onRefresh
protected void onRefresh(ApplicationContext context)
Template method which can be overridden to add portlet-specific refresh work. Called after successful context refresh.This implementation is empty.
- Parameters:
context
- the current Portlet ApplicationContext- See Also:
refresh()
getTitle
protected String getTitle(RenderRequest renderRequest)
Overridden for friendlier behavior in unit tests.- Overrides:
getTitle
in classGenericPortlet
processAction
public final void processAction(ActionRequest request, ActionResponse response) throws PortletException, IOException
Delegate action requests to processRequest/doActionService.- Specified by:
processAction
in interfacePortlet
- Overrides:
processAction
in classGenericPortlet
- Throws:
PortletException
IOException
doDispatch
protected final void doDispatch(RenderRequest request, RenderResponse response) throws PortletException, IOException
Delegate render requests to processRequest/doRenderService.- Overrides:
doDispatch
in classGenericPortlet
- Throws:
PortletException
IOException
serveResource
public void serveResource(ResourceRequest request, ResourceResponse response) throws PortletException, IOException
- Specified by:
serveResource
in interfaceResourceServingPortlet
- Overrides:
serveResource
in classGenericPortlet
- Throws:
PortletException
IOException
processEvent
public void processEvent(EventRequest request, EventResponse response) throws PortletException, IOException
- Specified by:
processEvent
in interfaceEventPortlet
- Overrides:
processEvent
in classGenericPortlet
- Throws:
PortletException
IOException
processRequest
protected final void processRequest(PortletRequest request, PortletResponse response) throws PortletException, IOException
Process this request, publishing an event regardless of the outcome. The actual event handling is performed by the abstractdoActionService()
anddoRenderService()
template methods.
buildLocaleContext
protected LocaleContext buildLocaleContext(PortletRequest request)
Build a LocaleContext for the given request, exposing the request's primary locale as current locale.- Parameters:
request
- current HTTP request- Returns:
- the corresponding LocaleContext
getUsernameForRequest
protected String getUsernameForRequest(PortletRequest request)
Determine the username for the given request.The default implementation first tries the UserPrincipal. If that does not exist, then it checks the USER_INFO map. Can be overridden in subclasses.
- Parameters:
request
- current portlet request- Returns:
- the username, or
null
if none found - See Also:
PortletRequest.getUserPrincipal()
,PortletRequest.getRemoteUser()
,PortletRequest.USER_INFO
,setUserinfoUsernameAttributes(java.lang.String[])
doActionService
protected abstract void doActionService(ActionRequest request, ActionResponse response) throws Exception
Subclasses must implement this method to do the work of action request handling.The contract is essentially the same as that for the
processAction
method of GenericPortlet.This class intercepts calls to ensure that exception handling and event publication takes place.
- Parameters:
request
- current action requestresponse
- current action response- Throws:
Exception
- in case of any kind of processing failure- See Also:
GenericPortlet.processAction(javax.portlet.ActionRequest, javax.portlet.ActionResponse)
doRenderService
protected abstract void doRenderService(RenderRequest request, RenderResponse response) throws Exception
Subclasses must implement this method to do the work of render request handling.The contract is essentially the same as that for the
doDispatch
method of GenericPortlet.This class intercepts calls to ensure that exception handling and event publication takes place.
- Parameters:
request
- current render requestresponse
- current render response- Throws:
Exception
- in case of any kind of processing failure- See Also:
GenericPortlet.doDispatch(javax.portlet.RenderRequest, javax.portlet.RenderResponse)
doResourceService
protected abstract void doResourceService(ResourceRequest request, ResourceResponse response) throws Exception
Subclasses must implement this method to do the work of resource request handling.The contract is essentially the same as that for the
serveResource
method of GenericPortlet.This class intercepts calls to ensure that exception handling and event publication takes place.
- Parameters:
request
- current resource requestresponse
- current resource response- Throws:
Exception
- in case of any kind of processing failure- See Also:
GenericPortlet.serveResource(javax.portlet.ResourceRequest, javax.portlet.ResourceResponse)
doEventService
protected abstract void doEventService(EventRequest request, EventResponse response) throws Exception
Subclasses must implement this method to do the work of event request handling.The contract is essentially the same as that for the
processEvent
method of GenericPortlet.This class intercepts calls to ensure that exception handling and event publication takes place.
- Parameters:
request
- current event requestresponse
- current event response- Throws:
Exception
- in case of any kind of processing failure- See Also:
GenericPortlet.processEvent(javax.portlet.EventRequest, javax.portlet.EventResponse)
destroy
public void destroy()
Close the ApplicationContext of this portlet.- Specified by:
destroy
in interfacePortlet
- Overrides:
destroy
in classGenericPortlet
- See Also:
ConfigurableApplicationContext.close()