Package com.google.appengine.api.users

Interface UserService

public interface UserService

The UserService provides information useful for forcing a user to log in or out, and retrieving information about the user who is currently logged-in.

Method Summary

Modifier and Type	Method	Description
String	createLoginURL(String destinationURL)	Returns a URL that can be used to display a login page to the user.
String	createLoginURL(String destinationURL, @Nullable String authDomain)	Returns a URL that can be used to display a login page to the user.
String	createLoginURL(String destinationURL, String authDomain, String federatedIdentity, Set<String> attributesRequest)	Deprecated. Use of federatedIdentity is no longer supported.
String	createLogoutURL(String destinationURL)	Returns a URL that can be used to log the current user out of this app.
String	createLogoutURL(String destinationURL, @Nullable String authDomain)	Returns a URL that can be used to log the current user out of this app.
@Nullable User	getCurrentUser()	If the user is logged in, this method will return a User that contains information about them.
boolean	isUserAdmin()	Returns true if the user making this request is an admin for this application, false otherwise.
boolean	isUserLoggedIn()	Returns true if there is a user logged in, false otherwise.

Method Detail

createLoginURL

String createLoginURL(String destinationURL)

Returns a URL that can be used to display a login page to the user.

Parameters:

destinationURL - where the user will be redirected after they log in.

Returns:

The URL that will present a login prompt.

Throws:

IllegalArgumentException - If the destinationURL is not valid.

createLoginURL

String createLoginURL(String destinationURL,
                      @Nullable String authDomain)

Returns a URL that can be used to display a login page to the user.

Parameters:

destinationURL - where the user will be redirected after they log in.

authDomain - not used.

Returns:

The URL that will present a login prompt.

Throws:

IllegalArgumentException - If the destinationURL is not valid.

createLoginURL

@Deprecated
String createLoginURL(String destinationURL,
                      String authDomain,
                      String federatedIdentity,
                      Set<String> attributesRequest)

Deprecated.

Use of federatedIdentity is no longer supported. Please change calls to a method that does not take the parameter.

Returns a URL that can be used to redirect the user to a third party for federated login.

Parameters:

destinationURL - where the user will be redirected after they log in.

authDomain - not used.

federatedIdentity - Setting this parameter to a non-null value will throw an IllegalArgumentException. OpenID 2.0 support has been decommissioned. Please see https://cloud.google.com/appengine/docs/deprecations/open_id for details.

attributesRequest - not used.

Returns:

The URL that will present a login prompt.

Throws:

IllegalArgumentException - If the destinationURL is not valid or if federatedIdentity is not null

createLogoutURL

String createLogoutURL(String destinationURL)

Returns a URL that can be used to log the current user out of this app.

Parameters:

destinationURL - where the user will be redirected after they log out.

Returns:

The URL that will log the user out.

Throws:

IllegalArgumentException - If the destinationURL is not valid.

createLogoutURL

String createLogoutURL(String destinationURL,
                       @Nullable String authDomain)

Returns a URL that can be used to log the current user out of this app.

Parameters:

destinationURL - where the user will be redirected after they log out.

authDomain - not used.

Returns:

The URL that will log the user out.

Throws:

IllegalArgumentException - If the destinationURL is not valid.

isUserLoggedIn

boolean isUserLoggedIn()

Returns true if there is a user logged in, false otherwise.

isUserAdmin

boolean isUserAdmin()

Returns true if the user making this request is an admin for this application, false otherwise.

Throws:

IllegalStateException - If the current user is not logged in.

getCurrentUser

@Nullable User getCurrentUser()

If the user is logged in, this method will return a User that contains information about them. Note that repeated calls may not necessarily return the same User object.

Returns:

User if the user is logged in, null otherwise.