com.vaadin.server

Class VaadinPortletService

java.lang.Object

com.vaadin.server.VaadinService

com.vaadin.server.VaadinPortletService

All Implemented Interfaces:

Serializable

public class VaadinPortletService
extends VaadinService

See Also:

Serialized Form

Field Summary

Fields inherited from class com.vaadin.server.VaadinService

URL_PARAMETER_CLOSE_APPLICATION, URL_PARAMETER_RESTART_APPLICATION

Constructor Summary

Constructors

Constructor and Description
VaadinPortletService(VaadinPortlet portlet, DeploymentConfiguration deploymentConfiguration)

Method Summary

Modifier and Type	Method and Description
protected List<RequestHandler>	createRequestHandlers() Called during initialization to add the request handlers for the service.
protected VaadinSession	createVaadinSession(VaadinRequest request) Creates a new Vaadin session for this service and request.
File	getBaseDirectory() Returns the context base directory.
String	getConfiguredTheme(VaadinRequest request) Gets the theme that is configured for this deployment, e.g.
String	getConfiguredWidgetset(VaadinRequest request) Gets the widgetset that is configured for this deployment, e.g.
static javax.portlet.PortletRequest	getCurrentPortletRequest() Gets the currently processed portlet request.
static VaadinPortletRequest	getCurrentRequest() Gets the currently processed Vaadin portlet request.
static VaadinPortletResponse	getCurrentResponse() Gets the currently processed Vaadin portlet response.
String	getMainDivId(VaadinSession session, VaadinRequest request, Class<? extends UI> uiClass) Creates and returns a unique ID for the DIV where the UI is to be rendered.
String	getMimeType(String resourceName) Returns the MIME type of the specified file, or null if the MIME type is not known.
VaadinPortlet	getPortlet() Retrieves a reference to the portlet associated with this service.
protected VaadinPortlet.RequestType	getRequestType(VaadinRequest request) Deprecated. As of 7.0. Will likely change or be removed in a future version
String	getServiceName() Gets a unique name for this service.
protected Lock	getSessionLock(WrappedSession wrappedSession) Gets the lock instance used to lock the VaadinSession associated with the given wrapped session.
String	getStaticFileLocation(VaadinRequest request) Return the URL from where static files, e.g.
InputStream	getThemeResourceAsStream(UI uI, String themeName, String resource) Finds the given theme resource from the web content folder or using the class loader and returns a stream for it.
protected void	handleSessionExpired(VaadinRequest request, VaadinResponse response) Called when the session has expired and the request handling is therefore aborted.
boolean	isStandalone(VaadinRequest request) Checks whether the UI will be rendered on its own in the browser or whether it will be included into some other context.
boolean	preserveUIOnRefresh(UIProvider provider, UICreateEvent event) Always preserve UIs in portlets to make portlet actions work.
protected VaadinSession	readFromHttpSession(WrappedSession wrappedSession) Performs the actual read of the VaadinSession from the underlying HTTP session after sanity checks have been performed.
protected void	removeFromHttpSession(WrappedSession wrappedSession) Performs the actual removal of the VaadinSession from the underlying HTTP session after sanity checks have been performed.
protected boolean	requestCanCreateSession(VaadinRequest request) Checks whether it's valid to create a new service session as a result of the given request.
protected void	setSessionLock(WrappedSession wrappedSession, Lock lock) Associates the given lock with this service and the given wrapped session.
protected void	writeToHttpSession(WrappedSession wrappedSession, VaadinSession session) Performs the actual write of the VaadinSession to the underlying HTTP session after sanity checks have been performed.

Methods inherited from class com.vaadin.server.VaadinService

accessSession, addServiceDestroyListener, addSessionDestroyListener, addSessionInitListener, cleanupSession, closeSession, createCriticalNotificationJSON, criticalNotification, destroy, ensureAccessQueuePurged, ensurePushAvailable, findUI, findVaadinSession, fireSessionDestroy, generateConnectorId, getApplicationUrl, getClassLoader, getCurrent, getDependencyFilters, getDeploymentConfiguration, getExistingSession, getLockAttributeName, getRequestHandlers, getServiceInitListeners, getSessionAttributeName, getSystemMessages, getSystemMessagesProvider, handleRequest, init, initConnectorIdGenerator, initDependencyFilters, isAtmosphereAvailable, isCsrfTokenValid, isOtherSessionLocked, isUIActive, loadSession, lockSession, reinitializeSession, removeServiceDestroyListener, removeSession, removeSessionDestroyListener, removeSessionInitListener, requestEnd, requestStart, runPendingAccessTasks, setClassLoader, setCurrent, setCurrentInstances, setDefaultClassLoader, setSystemMessagesProvider, storeSession, unlockSession, verifyNoOtherSessionLocked, writeStringResponse, writeUncachedStringResponse

Methods inherited from class java.lang.Object

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

Constructor Detail

VaadinPortletService

public VaadinPortletService(VaadinPortlet portlet,
                            DeploymentConfiguration deploymentConfiguration)
                     throws ServiceException

Throws:

ServiceException

Method Detail

createRequestHandlers

protected List<RequestHandler> createRequestHandlers()
                                              throws ServiceException

Description copied from class: VaadinService

Called during initialization to add the request handlers for the service. Note that the returned list will be reversed so the last handler will be called first. This enables overriding this method and using add on the returned list to add a custom request handler which overrides any predefined handler.

Overrides:

createRequestHandlers in class VaadinService

Returns:

The list of request handlers used by this service.

Throws:

ServiceException - if a problem occurs when creating the request handlers

getPortlet

public VaadinPortlet getPortlet()

Retrieves a reference to the portlet associated with this service.

Returns:

A reference to the VaadinPortlet this service is using

getConfiguredWidgetset

public String getConfiguredWidgetset(VaadinRequest request)

Description copied from class: VaadinService

Gets the widgetset that is configured for this deployment, e.g. from a parameter in web.xml.

Specified by:

getConfiguredWidgetset in class VaadinService

Parameters:

request - the request for which a widgetset is required

Returns:

the name of the widgetset

getConfiguredTheme

public String getConfiguredTheme(VaadinRequest request)

Description copied from class: VaadinService

Gets the theme that is configured for this deployment, e.g. from a portal parameter or just some sensible default value.

Specified by:

getConfiguredTheme in class VaadinService

Parameters:

request - the request for which a theme is required

Returns:

the name of the theme

isStandalone

public boolean isStandalone(VaadinRequest request)

Description copied from class: VaadinService

Checks whether the UI will be rendered on its own in the browser or whether it will be included into some other context. A standalone UI may do things that might interfere with other parts of a page, e.g. changing the page title and requesting focus upon loading.

Specified by:

isStandalone in class VaadinService

Parameters:

request - the request for which the UI is loaded

Returns:

a boolean indicating whether the UI should be standalone

getStaticFileLocation

public String getStaticFileLocation(VaadinRequest request)

Description copied from class: VaadinService

Return the URL from where static files, e.g. the widgetset and the theme, are served. In a standard configuration the VAADIN folder inside the returned folder is what is used for widgetsets and themes. The returned folder is usually the same as the context path and independent of e.g. the servlet mapping.

Specified by:

getStaticFileLocation in class VaadinService

Parameters:

request - the request for which the location should be determined

Returns:

The location of static resources (should contain the VAADIN directory). Never ends with a slash (/).

getMimeType

public String getMimeType(String resourceName)

Description copied from class: VaadinService

Returns the MIME type of the specified file, or null if the MIME type is not known. The MIME type is determined by the configuration of the container, and may be specified in a deployment descriptor. Common MIME types are "text/html" and "image/gif".

Specified by:

getMimeType in class VaadinService

Parameters:

resourceName - a String specifying the name of a file

Returns:

a String specifying the file's MIME type

See Also:

ServletContext.getMimeType(String), PortletContext.getMimeType(String)

getBaseDirectory

public File getBaseDirectory()

Description copied from class: VaadinService

Returns the context base directory. Typically an application is deployed in a such way that is has an application directory. For web applications this directory is the root directory of the web applications. In some cases applications might not have an application directory (for example web applications running inside a war).

Specified by:

getBaseDirectory in class VaadinService

Returns:

The application base directory or null if the application has no base directory.

requestCanCreateSession

protected boolean requestCanCreateSession(VaadinRequest request)

Description copied from class: VaadinService

Checks whether it's valid to create a new service session as a result of the given request.

Specified by:

requestCanCreateSession in class VaadinService

Parameters:

request - the request

Returns:

true if it's valid to create a new service session for the request; else false

getRequestType

@Deprecated
protected VaadinPortlet.RequestType getRequestType(VaadinRequest request)

Deprecated. As of 7.0. Will likely change or be removed in a future version

Gets the request type for the request.

Parameters:

request - the request to get a request type for

Returns:

the request type

getCurrentPortletRequest

public static javax.portlet.PortletRequest getCurrentPortletRequest()

Gets the currently processed portlet request. The current portlet request is automatically defined when the request is started. The current portlet request can not be used in e.g. background threads because of the way server implementations reuse request instances.

Returns:

the current portlet request instance if available, otherwise null

getCurrentRequest

public static VaadinPortletRequest getCurrentRequest()

Gets the currently processed Vaadin portlet request. The current request is automatically defined when the request is started. The current request can not be used in e.g. background threads because of the way server implementations reuse request instances.

Returns:

the current Vaadin portlet request instance if available, otherwise null

getCurrentResponse

public static VaadinPortletResponse getCurrentResponse()

Gets the currently processed Vaadin portlet response. The current response is automatically defined when the request is started. The current response can not be used in e.g. background threads because of the way server implementations reuse response instances.

Returns:

the current Vaadin portlet response instance if available, otherwise null

createVaadinSession

protected VaadinSession createVaadinSession(VaadinRequest request)
                                     throws ServiceException

Description copied from class: VaadinService

Creates a new Vaadin session for this service and request.

Overrides:

createVaadinSession in class VaadinService

Parameters:

request - The request for which to create a VaadinSession

Returns:

A new VaadinSession

Throws:

ServiceException

getServiceName

public String getServiceName()

Description copied from class: VaadinService

Gets a unique name for this service. The name should be unique among different services of the same type but the same for corresponding instances running in different JVMs in a cluster. This is typically based on e.g. the configured servlet's or portlet's name.

Specified by:

getServiceName in class VaadinService

Returns:

the unique name of this service instance.

preserveUIOnRefresh

public boolean preserveUIOnRefresh(UIProvider provider,
                                   UICreateEvent event)

Always preserve UIs in portlets to make portlet actions work.

Overrides:

preserveUIOnRefresh in class VaadinService

Parameters:

provider - the UI provider responsible for the UI

event - the UI create event with details about the UI

Returns:

true if the UI should be preserved on refresh; false if a new UI instance should be initialized on refreshed.

getThemeResourceAsStream

public InputStream getThemeResourceAsStream(UI uI,
                                            String themeName,
                                            String resource)

Description copied from class: VaadinService

Finds the given theme resource from the web content folder or using the class loader and returns a stream for it.

Specified by:

getThemeResourceAsStream in class VaadinService

Parameters:

uI - The ui for which to find the resource

themeName - The name of the theme

resource - The name of the resource, e.g. "layouts/mycustomlayout.html"

Returns:

A stream for the resource or null if the resource was not found

getMainDivId

public String getMainDivId(VaadinSession session,
                           VaadinRequest request,
                           Class<? extends UI> uiClass)

Description copied from class: VaadinService

Creates and returns a unique ID for the DIV where the UI is to be rendered.

Specified by:

getMainDivId in class VaadinService

Parameters:

session - The service session to which the bootstrapped UI will belong.

request - The request for which a div id is needed

uiClass - The class of the UI that will be bootstrapped

Returns:

the id to use in the DOM

handleSessionExpired

protected void handleSessionExpired(VaadinRequest request,
                                    VaadinResponse response)

Description copied from class: VaadinService

Called when the session has expired and the request handling is therefore aborted.

Overrides:

handleSessionExpired in class VaadinService

Parameters:

request - The request

response - The response

writeToHttpSession

protected void writeToHttpSession(WrappedSession wrappedSession,
                                  VaadinSession session)

Description copied from class: VaadinService

Performs the actual write of the VaadinSession to the underlying HTTP session after sanity checks have been performed.

Called by VaadinService.storeSession(VaadinSession, WrappedSession)

Overrides:

writeToHttpSession in class VaadinService

Parameters:

wrappedSession - the underlying HTTP session

session - the VaadinSession to store

readFromHttpSession

protected VaadinSession readFromHttpSession(WrappedSession wrappedSession)

Description copied from class: VaadinService

Performs the actual read of the VaadinSession from the underlying HTTP session after sanity checks have been performed.

Called by VaadinService.loadSession(WrappedSession).

Overrides:

readFromHttpSession in class VaadinService

Parameters:

wrappedSession - the underlying HTTP session

Returns:

the VaadinSession or null if no session was found

removeFromHttpSession

protected void removeFromHttpSession(WrappedSession wrappedSession)

Description copied from class: VaadinService

Performs the actual removal of the VaadinSession from the underlying HTTP session after sanity checks have been performed.

Overrides:

removeFromHttpSession in class VaadinService

Parameters:

wrappedSession - the underlying HTTP session

setSessionLock

protected void setSessionLock(WrappedSession wrappedSession,
                              Lock lock)

Description copied from class: VaadinService

Associates the given lock with this service and the given wrapped session. This method should not be called more than once when the lock is initialized for the session.

Overrides:

setSessionLock in class VaadinService

Parameters:

wrappedSession - The wrapped session the lock is associated with

lock - The lock object

See Also:

VaadinService.getSessionLock(WrappedSession)

getSessionLock

protected Lock getSessionLock(WrappedSession wrappedSession)

Description copied from class: VaadinService

Gets the lock instance used to lock the VaadinSession associated with the given wrapped session.

This method uses the wrapped session instead of VaadinSession to be able to lock even before the VaadinSession has been initialized.

Overrides:

getSessionLock in class VaadinService

Parameters:

wrappedSession - The wrapped session

Returns:

A lock instance used for locking access to the wrapped session