Package com.vaadin.flow.server

Interface Summary

Interface	Description
BootstrapHandler.PageBuilder	Interface for objects capable of building the bootstrap page.
BootstrapListener	This event listener is notified when the bootstrap HTML is about to be generated and sent to the client.
Command	A generic command interface meant to be used for passing lambdas around.
DependencyFilter	Filter for dependencies loaded using @StyleSheet, @JavaScript and @HtmlImport.
ErrorHandler	Application errors handler.
ErrorHandlingCommand	Defines the interface to handle exceptions thrown during the execution of a FutureAccess.
ErrorRouteRegistry	Interface class for RouteRegistries that can be used to request for error navigation views for Exceptions.
FallibleCommand	Deprecated this command is an internal command and is not supposed to be used in application code
InputStreamFactory	Creates input stream instances that provides the actual data of a StreamResource.
PageConfigurator	Deprecated Deprecated due to multiple issues on feature design, like this won't work together with the PreserveOnRefresh annotation.
RequestHandler	Handler for producing a response to HTTP requests.
RouteRegistry	The RouteRegistry interface class that gives the out facing usage needs for a route registry implementation.
ServiceDestroyListener	Listener that gets notified when the VaadinService to which it has been registered is destroyed.
SessionDestroyListener	A listener that gets notified when a Vaadin service session is no longer used.
SessionExpiredHandler	A specialized RequestHandler which is capable of sending session expiration messages to the user.
SessionInitListener	Event listener that can be registered to a VaadinService to get an event when a new Vaadin service session is initialized for that service.
StaticFileHandler	Handler for static files.
StreamRegistration	Stream registration result.
StreamResourceWriter	Output stream consumer.
StreamVariable	StreamVariable is a special kind of variable whose value is streamed to an OutputStream provided by the StreamVariable.getOutputStream() method.
StreamVariable.StreamingEndEvent	Event passed to StreamVariable.streamingFinished(StreamingEndEvent) method the contents have been streamed to StreamVariable successfully.
StreamVariable.StreamingErrorEvent	Event passed to StreamVariable.streamingFailed(StreamingErrorEvent) method when the streaming ended before the end of the input.
StreamVariable.StreamingEvent	Streaming event interface.
StreamVariable.StreamingProgressEvent	Event passed to StreamVariable.onProgress(StreamingProgressEvent) method during the streaming progresses.
StreamVariable.StreamingStartEvent	Event passed to StreamVariable.streamingStarted(StreamingStartEvent) method before the streaming of the content to StreamVariable starts.
SynchronizedRequestHandler.ResponseWriter	ResponseWriter is optionally returned by request handlers which implement SynchronizedRequestHandler.synchronizedHandleRequest(VaadinSession, VaadinRequest, VaadinResponse, String) The ResponseWriter will be executed by SynchronizedRequestHandler.handleRequest(VaadinSession, VaadinRequest, VaadinResponse) without holding Vaadin session lock.
SystemMessagesProvider	Gives out system messages based on Locale.
UIInitListener	Event listener that can be registered for receiving an event when a UI is initialized.
VaadinConfig	Configuration in which VaadinService is running.
VaadinContext	Context in which VaadinService is running.
VaadinRequest	A generic request to the server, wrapping a more specific request type, e.g.
VaadinResponse	A generic response from the server, wrapping a more specific response type, e.g.
VaadinServiceInitListener	Listener for VaadinService initialization events.
WrappedSession	A generic session, wrapping a more specific session implementation, e.g.

Class Summary

Class	Description
AbstractDeploymentConfiguration	An abstract base class for DeploymentConfiguration implementations.
AbstractStreamResource	Abstract stream resource class.
Attributes	The Attributes class represents a set of attributes.
BootstrapHandler	Request handler which handles bootstrapping of the application, i.e.
BootstrapHandler.BootstrapContext	Provides context information for the bootstrap process.
BootstrapHandler.BootstrapPageBuilder	Builds bootstrap pages.
BootstrapHandler.BootstrapUriResolver	The URI resolver used in the bootstrap process.
BootstrapPageResponse	This represents the state of a bootstrap page being generated.
Constants	Constants used by the server side framework.
CustomizedSystemMessages	Contains the system messages used to notify the user about various critical situations that can occur.
DefaultDeploymentConfiguration	The default implementation of DeploymentConfiguration based on a base class for resolving system properties and a set of init parameters.
DefaultErrorHandler	The default implementation of ErrorHandler.
DefaultSystemMessagesProvider	System messages provider using the built-in default system messages.
DependencyFilter.FilterContext	Provides context information for the dependency filter operation.
DeploymentConfigurationFactory	Creates DeploymentConfiguration filled with all parameters specified by the framework users.
DevModeHandler	Handles getting resources from webpack-dev-server.
ErrorEvent	An error thrown by the framework and handled by an ErrorHandler.
FrontendVaadinServlet	This servlet handles static resources and webjars.
FutureAccess	Encapsulates a Command submitted using VaadinSession.access(Command).
HandlerHelper	Contains helper methods for VaadinServlet and generally for handling VaadinRequests.
InitialPageSettings	Deprecated Use BootstrapPageResponse instance passed via BootstrapListener instead, or acquire the UI via BootstrapListener for certain modifications and configuration.
InitParameters	Constants for all servlet init parameters.
InlineTargets	Data holder class for collected Inline annotations to be added to the initial page.
PropertyDeploymentConfiguration	The property handling implementation of DeploymentConfiguration based on a base class for resolving system properties and a set of init parameters.
PwaConfiguration	Holds the configuration from the PWA annotation.
PwaIcon	Implementation of icons used in PWA resources.
PwaRegistry	Registry for PWA data.
ServiceContextUriResolver	A URI resolver which resolves paths for loading through VaadinService resource methods.
ServiceDestroyEvent	Event fired to ServiceDestroyListener when a VaadinService is being destroyed.
ServiceInitEvent	Event fired to VaadinServiceInitListener when a VaadinService is being initialized.
ServletHelper	Deprecated Use HandlerHelper instead
SessionDestroyEvent	Event fired when a Vaadin service session is no longer in use.
SessionInitEvent	Event gets fired when a new Vaadin service session is initialized for a Vaadin service.
SessionRouteRegistry	SessionRouteRegistry is a mutable route registry that is valid in the scope of VaadinSession.
StaticFileServer	Handles sending of resources from the WAR root (web content) or META-INF/resources in the case that VaadinServlet is mapped using "/*".
StreamReceiver	Represents a receiver for data upload from the client.
StreamResource	Represents dynamically generated data.
StreamResourceRegistry	Registry for StreamResource instances.
SynchronizedRequestHandler	RequestHandler which takes care of locking and unlocking of the VaadinSession automatically.
SystemMessages	Contains the system messages used to notify the user about various critical situations that can occur.
SystemMessagesInfo	Provides information available for SystemMessagesProvider when defining what SystemMessages to use.
UIInitEvent	Event fired to UIInitListener when a UI has been initialized.
UnsupportedBrowserHandler	A RequestHandler that presents an informative page if the browser in use is unsupported.
VaadinService	An abstraction of the underlying technology, e.g.
VaadinServlet	The main servlet, which handles all incoming requests to the application.
VaadinServletConfig	VaadinConfig implementation for Servlets.
VaadinServletContext	VaadinContext that goes with VaadinServletService.
VaadinServletRequest	Wrapper for HttpServletRequest.
VaadinServletResponse	Wrapper for HttpServletResponse.
VaadinServletService	A service implementation connected to a VaadinServlet.
VaadinSession	Contains everything that Vaadin needs to store for a specific user.
Version	Provides information about the current version of the framework.
WebBrowser	Provides information about the web browser the user is using that is directly available in the request, for instance browser name and version and IP address.
WrappedHttpSession	Wrapper for HttpSession.

Enum Summary

Enum	Description
HandlerHelper.RequestType	Framework internal enum for tracking the type of a request.
InitialPageSettings.Position	Append position enum.
InitialPageSettings.WrapMode	Content wrapping mode enum.
PwaIcon.Domain	Place where icon belongs to (header or manifest.webmanifest).
ServletHelper.RequestType	Framework internal enum for tracking the type of a request.
VaadinSessionState	The lifecycle state of a VaadinSession.

Exception Summary

Exception	Description
AmbiguousRouteConfigurationException	Exception indicating that the application's routes already has the navigation target with the given path.
BootstrapException	A Vaadin internal runtime exception thrown when the writing of the bootstrap page in BootstrapHandler fails for some reason.
ExecutionFailedException	Thrown by FallibleCommand if it's unable to complete its execution.
InvalidApplicationConfigurationException	Exception indicating that the application's routes have been configured incorrectly.
InvalidCustomElementNameException	Exception indicating that the custom-element name is invalid.
InvalidI18NConfigurationException	Exception indicating that the application's I18N localization has been configured incorrectly.
InvalidRouteConfigurationException	Exception indicating that the application's routes have been configured incorrectly.
InvalidRouteLayoutConfigurationException	Exception indicating that Route layouts configuration has problems.
NoInputStreamException	Exception for when there is no InputStream available.
NoOutputStreamException	Exception for when there is no OutputStream available.
ServiceException	Thrown for problems which occur in the VaadinService layer.
SessionExpiredException	Exception indicating that the session has expired.
UploadException	Upload exception class.
VaadinConfigurationException	Exception thrown for failures in the generation of a deployment configuration object.

Annotation Types Summary

Annotation Type	Description
PWA	Defines application PWA properties.
VaadinServletConfiguration	Deprecated Leftover from Vaadin Framework 8 where the developer typically defines their own servlet class.
VaadinServletConfiguration.InitParameterName	Defines the init parameter name for methods in VaadinServletConfiguration.