We use cookies to serve our customers and website visitors in the best possible way. Cookies are used for the proper functioning of the website and for improving the user experience, monitoring visitor traffic and marketing purposes. By continuing to browse the site, you agree to our use of cookies. You can read more about cookies here.
com.vaadin.flow.server.
Class BootstrapHandler
- java.lang.Object
-
- com.vaadin.flow.server.SynchronizedRequestHandler
-
- com.vaadin.flow.server.BootstrapHandler
-
All Implemented Interfaces:
public class BootstrapHandler extends SynchronizedRequestHandlerRequest handler which handles bootstrapping of the application, i.e. the initial GET request.
Since:
1.0
Author:
Vaadin Ltd
See Also:
-
-
Nested Class Summary
Nested Classes Modifier and Type Class and Description protected static classBootstrapHandler.BootstrapContextProvides context information for the bootstrap process.
static classBootstrapHandler.BootstrapUriResolverThe URI resolver used in the bootstrap process.
-
Constructor Summary
Constructors Constructor and Description BootstrapHandler()
-
Method Summary
All Methods Modifier and Type Method and Description protected BootstrapHandler.BootstrapContextcreateAndInitUI(Class<? extends UI> uiClass, VaadinRequest request, VaadinResponse response, VaadinSession session)protected static elemental.json.JsonObjectgetApplicationParameters(BootstrapHandler.BootstrapContext context)protected static elemental.json.JsonObjectgetInitialUidl(UI ui)Generates the initial UIDL message which is included in the initial bootstrap page.
protected static StringgetServiceUrl(BootstrapHandler.BootstrapContext context)Gets the service URL as a URL relative to the request URI.
protected static Class<? extends UI>getUIClass(VaadinRequest request)Returns the UI class mapped for servlet that handles the given request.
protected static StringreadResource(String fileName)protected static Optional<String>resolvePageTitle(BootstrapHandler.BootstrapContext context)Resolves the initial page title for the given bootstrap context and cancels any pending JS execution for it.
protected voidsetupPushConnectionFactory(PushConfiguration pushConfiguration, BootstrapHandler.BootstrapContext context)booleansynchronizedHandleRequest(VaadinSession session, VaadinRequest request, VaadinResponse response)Identical to
SynchronizedRequestHandler.handleRequest(VaadinSession, VaadinRequest, VaadinResponse)except theVaadinSessionis locked before this is called and unlocked after this has completed.-
Methods inherited from class com.vaadin.flow.server.SynchronizedRequestHandler
canHandleRequest, handleRequest
-
-
-
-
Method Detail
-
synchronizedHandleRequest
public boolean synchronizedHandleRequest(VaadinSession session, VaadinRequest request, VaadinResponse response) throws IOExceptionDescription copied from class:
SynchronizedRequestHandlerIdentical to
SynchronizedRequestHandler.handleRequest(VaadinSession, VaadinRequest, VaadinResponse)except theVaadinSessionis locked before this is called and unlocked after this has completed.Specified by:
synchronizedHandleRequestin classSynchronizedRequestHandlerParameters:
session- The session for the requestrequest- The request to handleresponse- The response object to which a response can be written.Returns:
true if a response has been written and no further request handlers should be called, otherwise false
Throws:
IOException- If an IO error occurredSee Also:
SynchronizedRequestHandler.handleRequest(VaadinSession, VaadinRequest, VaadinResponse)
-
getApplicationParameters
protected static elemental.json.JsonObject getApplicationParameters(BootstrapHandler.BootstrapContext context)
-
getServiceUrl
protected static String getServiceUrl(BootstrapHandler.BootstrapContext context)Gets the service URL as a URL relative to the request URI.
Parameters:
context- the bootstrap contextReturns:
the relative service URL
-
resolvePageTitle
protected static Optional<String> resolvePageTitle(BootstrapHandler.BootstrapContext context)Resolves the initial page title for the given bootstrap context and cancels any pending JS execution for it.
Parameters:
context- the bootstrap contextReturns:
the optional initial page title
-
createAndInitUI
protected BootstrapHandler.BootstrapContext createAndInitUI(Class<? extends UI> uiClass, VaadinRequest request, VaadinResponse response, VaadinSession session)
-
setupPushConnectionFactory
protected void setupPushConnectionFactory(PushConfiguration pushConfiguration, BootstrapHandler.BootstrapContext context)
-
getInitialUidl
protected static elemental.json.JsonObject getInitialUidl(UI ui)Generates the initial UIDL message which is included in the initial bootstrap page.
Parameters:
ui- the UI for which the UIDL should be generatedReturns:
a JSON object with the initial UIDL message
-
getUIClass
protected static Class<? extends UI> getUIClass(VaadinRequest request)Returns the UI class mapped for servlet that handles the given request.
This method is protected for testing purposes.
Parameters:
request- the request for the UIReturns:
the UI class for the request
-
-