com.vaadin.flow.router.internal

Class AbstractRouteRegistry

java.lang.Object

com.vaadin.flow.router.internal.AbstractRouteRegistry

All Implemented Interfaces:

RouteRegistry, Serializable

Direct Known Subclasses:

ApplicationRouteRegistry, SessionRouteRegistry

public abstract class AbstractRouteRegistry
extends Object
implements RouteRegistry

AbstractRouteRegistry with locking support and configuration.

For internal use only. May be renamed or removed in a future release.

Since:

1.3

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	AbstractRouteRegistry.Configuration Configuration interface to use for updating the configuration entity.

Constructor Summary

Constructors

Constructor and Description
AbstractRouteRegistry()

Method Summary

Modifier and Type	Method and Description
protected void	addErrorTarget(Class<? extends Component> target, Map<Class<? extends Exception>,Class<? extends Component>> exceptionTargetsMap) Add the given error target to the exceptionTargetMap.
Registration	addRoutesChangeListener(RoutesChangedListener listener) Adds the given route change listener to the registry.
void	clean() Clear all registered routes from the registry.
protected void	configure(AbstractRouteRegistry.Configuration command) Thread-safe update of the RouteConfiguration.
protected void	fireEvent(RoutesChangedEvent routeChangedEvent) Fire routes changed event to all registered listeners.
ConfiguredRoutes	getConfiguration() Get the current valid configuration.
NavigationRouteTarget	getNavigationRouteTarget(String url) Search for a route target using given navigation url argument.
Optional<Class<? extends Component>>	getNavigationTarget(String url) Gets the optional navigation target class for a given path.
Optional<Class<? extends Component>>	getNavigationTarget(String url, List<String> segments) Gets the optional navigation target class for a given Location matching with path segments.
List<RouteData>	getRegisteredRoutes() Get the RouteData for all registered navigation targets.
List<Class<? extends RouterLayout>>	getRouteLayouts(String path, Class<? extends Component> navigationTarget) Deprecated. instead use getNavigationRouteTarget(String) and retrieve the list of route layouts from the RouteTarget contained in the NavigationRouteTarget.
RouteTarget	getRouteTarget(Class<? extends Component> target, RouteParameters parameters) Gets the RouteTarget instance matching the given target component and route parameters.
Optional<String>	getTargetUrl(Class<? extends Component> navigationTarget) Get the url string for given navigation target.
Optional<String>	getTargetUrl(Class<? extends Component> navigationTarget, RouteParameters parameters) Get the url string for given navigation target.
Optional<String>	getTemplate(Class<? extends Component> navigationTarget) Get the main template for given navigation target.
protected boolean	hasLock()
void	removeRoute(Class<? extends Component> navigationTarget) Remove the given navigation target route registration.
void	removeRoute(String path) Remove the registration for given path.
void	removeRoute(String path, Class<? extends Component> navigationTarget) Remove navigationTarget for the path.
protected Optional<ErrorTargetEntry>	searchByCause(Exception exception) Get the exception handler for given exception or recurse by exception cause until possible exception with handler found.
protected Optional<ErrorTargetEntry>	searchBySuperType(Throwable exception) Search given exception super classes to get exception handler for if any exist.
void	setRoute(String path, Class<? extends Component> navigationTarget, List<Class<? extends RouterLayout>> parentChain) Register a navigation target with specified path and given parent layout chain.
void	update(Command command) Block updates to the registry configuration from other threads until update command has completed.

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractRouteRegistry

public AbstractRouteRegistry()

Method Detail

configure

protected void configure(AbstractRouteRegistry.Configuration command)

Thread-safe update of the RouteConfiguration.

Parameters:

command - command that will mutate the configuration copy.

update

public void update(Command command)

Description copied from interface: RouteRegistry

Block updates to the registry configuration from other threads until update command has completed. This makes the command changes atomic for the registry as no one else can change the registry state during the command.

Any other thread trying to configure current registry will be blocked until the update has released all the locks.

Specified by:

update in interface RouteRegistry

Parameters:

command - command to execute for the update

fireEvent

protected void fireEvent(RoutesChangedEvent routeChangedEvent)

Fire routes changed event to all registered listeners.

Parameters:

routeChangedEvent - event containing changes

addRoutesChangeListener

public Registration addRoutesChangeListener(RoutesChangedListener listener)

Description copied from interface: RouteRegistry

Adds the given route change listener to the registry.

Specified by:

addRoutesChangeListener in interface RouteRegistry

Parameters:

listener - listener to be informed on route changes

Returns:

registration to remove the listener

hasLock

protected boolean hasLock()

getConfiguration

public ConfiguredRoutes getConfiguration()

Get the current valid configuration.

Note! there may exist a possibility that someone updates this while it's being read, but the given configuration is valid at the given point in time.

Returns:

current state of the registry as a value object

getRegisteredRoutes

public List<RouteData> getRegisteredRoutes()

Description copied from interface: RouteRegistry

Get the RouteData for all registered navigation targets.

Specified by:

getRegisteredRoutes in interface RouteRegistry

Returns:

list of routes available for this registry

getRouteLayouts

@Deprecated
public List<Class<? extends RouterLayout>> getRouteLayouts(String path,
                                                                       Class<? extends Component> navigationTarget)

Deprecated. instead use getNavigationRouteTarget(String) and retrieve the list of route layouts from the RouteTarget contained in the NavigationRouteTarget.

Description copied from interface: RouteRegistry

Get the layout chain for given navigation target on the targeted path.

This chain may be pre-defined or generated from annotation data.

Specified by:

getRouteLayouts in interface RouteRegistry

Parameters:

path - path to use for resolving chain

navigationTarget - navigation target to get layout chain for

Returns:

layout chain of target

See Also:

RouteTarget.getParentLayouts()

getTargetUrl

public Optional<String> getTargetUrl(Class<? extends Component> navigationTarget)

Description copied from interface: RouteRegistry

Get the url string for given navigation target.

Specified by:

getTargetUrl in interface RouteRegistry

Parameters:

navigationTarget - navigation target to get registered route for, not null

Returns:

Optional navigation target url string or Optional.empty() if navigation target was not found

getTargetUrl

public Optional<String> getTargetUrl(Class<? extends Component> navigationTarget,
                                     RouteParameters parameters)

Description copied from interface: RouteRegistry

Get the url string for given navigation target.

Specified by:

getTargetUrl in interface RouteRegistry

Parameters:

navigationTarget - navigation target to get registered route for, not null

parameters - parameters for the target url.

Returns:

Optional navigation target url string or Optional.empty() if navigation target was not found

getTemplate

public Optional<String> getTemplate(Class<? extends Component> navigationTarget)

Description copied from interface: RouteRegistry

Get the main template for given navigation target.

In case of annotated target the main template is composed of the Route annotation value prefixed by all RoutePrefix values of the parent RouterLayouts chain.

Specified by:

getTemplate in interface RouteRegistry

Parameters:

navigationTarget - navigation target to get route definition for, not null

Returns:

Optional navigation target template string or Optional.empty() if navigation target was not found

setRoute

public void setRoute(String path,
                     Class<? extends Component> navigationTarget,
                     List<Class<? extends RouterLayout>> parentChain)

Description copied from interface: RouteRegistry

Register a navigation target with specified path and given parent layout chain. Any ParentLayout, Route or RouteAlias will be ignored in route handling.

Specified by:

setRoute in interface RouteRegistry

Parameters:

path - path to register navigation target to

navigationTarget - navigation target to register into session scope

parentChain - chain of parent layouts that should be used with this target

removeRoute

public void removeRoute(Class<? extends Component> navigationTarget)

Description copied from interface: RouteRegistry

Remove the given navigation target route registration.

Note! this will remove target route and if possible any RouteAlias route that can be found for the class.

Specified by:

removeRoute in interface RouteRegistry

Parameters:

navigationTarget - navigation target class to remove

removeRoute

public void removeRoute(String path)

Description copied from interface: RouteRegistry

Remove the registration for given path.

In case navigationTarget is a HasUrlParameter, path argument needs to include the parameter placeholder which is added automatically. Otherwise, using RouteRegistry.removeRoute(String, Class) is preferred in such a case.

Specified by:

removeRoute in interface RouteRegistry

Parameters:

path - path for which to remove the navigation target.

removeRoute

public void removeRoute(String path,
                        Class<? extends Component> navigationTarget)

Description copied from interface: RouteRegistry

Remove navigationTarget for the path.

This method will check if indeed navigationTarget is registered with path.

In case navigationTarget is a HasUrlParameter, the path needs to be specified exactly as it is in the Route annotation or as it was registered using RouteRegistry.setRoute(String, Class, List), without the parameter placeholder which is automatically added.

Specified by:

removeRoute in interface RouteRegistry

Parameters:

path - path to remove from registry

navigationTarget - path navigation target to remove

clean

public void clean()

Description copied from interface: RouteRegistry

Clear all registered routes from the registry.

Specified by:

clean in interface RouteRegistry

getNavigationRouteTarget

public NavigationRouteTarget getNavigationRouteTarget(String url)

Description copied from interface: RouteRegistry

Search for a route target using given navigation url argument.

Specified by:

getNavigationRouteTarget in interface RouteRegistry

Parameters:

url - the navigation url used to search a route target.

Returns:

a NavigationRouteTarget instance containing the RouteTarget and RouteParameters extracted from the url argument according with the route configuration.

getRouteTarget

public RouteTarget getRouteTarget(Class<? extends Component> target,
                                  RouteParameters parameters)

Description copied from interface: RouteRegistry

Gets the RouteTarget instance matching the given target component and route parameters.

Specified by:

getRouteTarget in interface RouteRegistry

Parameters:

target - a component class which is a navigation target.

parameters - parameter values that may be used with given target.

Returns:

the RouteTarget instance matching the given target component and route parameters.

getNavigationTarget

public Optional<Class<? extends Component>> getNavigationTarget(String url)

Description copied from interface: RouteRegistry

Gets the optional navigation target class for a given path. Returns an empty optional if no navigation target corresponds to the given url.

Specified by:

getNavigationTarget in interface RouteRegistry

Parameters:

url - the path to get the navigation target for, not null

Returns:

optional of the navigation target corresponding to the given path

getNavigationTarget

public Optional<Class<? extends Component>> getNavigationTarget(String url,
                                                                List<String> segments)

Description copied from interface: RouteRegistry

Gets the optional navigation target class for a given Location matching with path segments.

Specified by:

getNavigationTarget in interface RouteRegistry

Parameters:

url - path to get navigation target for, not null

segments - segments given for path

Returns:

optional navigation target corresponding to the given location with given segments if any applicable targets found.

See Also:

Location

addErrorTarget

protected void addErrorTarget(Class<? extends Component> target,
                              Map<Class<? extends Exception>,Class<? extends Component>> exceptionTargetsMap)

Add the given error target to the exceptionTargetMap. This will handle existing overlapping exception types by assigning the correct error target according to inheritance or throw if existing and new are not related.

Parameters:

target - error handler target

exceptionTargetsMap - map of existing error handlers

Throws:

InvalidRouteConfigurationException - if trying to add a non related exception handler for which a handler already exists

searchByCause

protected Optional<ErrorTargetEntry> searchByCause(Exception exception)

Get the exception handler for given exception or recurse by exception cause until possible exception with handler found.

Parameters:

exception - exception to get handler for

Returns:

Optional containing found handler or empty if none found

searchBySuperType

protected Optional<ErrorTargetEntry> searchBySuperType(Throwable exception)

Search given exception super classes to get exception handler for if any exist.

Parameters:

exception - exception to get handler for

Returns:

Optional containing found handler or empty if none found