Package org.exoplatform.caldav.plugin

Class NoSubscriptionChannel

java.lang.Object

org.exoplatform.caldav.plugin.NoSubscriptionChannel

All Implemented Interfaces:

CalendarSubscriptionChannel

public final class NoSubscriptionChannel
extends Object
implements CalendarSubscriptionChannel

The subscription channel of an account no contributed channel recognises: no subscription is read in its listing, and nothing can be edited. The null object of CalendarSubscriptionChannel.

Field Summary

Fields

Modifier and Type	Field	Description
static final String	CHANNEL_ID	The identifier of the absent channel.
static final NoSubscriptionChannel	INSTANCE	The single instance.

Method Summary

Modifier and Type	Method	Description
<T> T	asSubscriber(CalDavEndpoint endpoint, String userUid, Function<SubscriptionEdits,T> job)	Refuses: no session can be opened.
String	id()	The channel's stable identifier, for the log.
CalendarOwners	ownersOf(CalDavEndpoint endpoint)	Refuses: no listing can be read.
CalendarSubscription	subscriptionOf(String href, String principal)	No subscription: the collection is what the DAV listing says.
String	userUidOf(String principal)	No uid: nobody is addressed.

Methods inherited from class java.lang.Object

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

Field Details

CHANNEL_ID

public static final String CHANNEL_ID

The identifier of the absent channel.

See Also:

• Constant Field Values

INSTANCE

public static final NoSubscriptionChannel INSTANCE

The single instance.

Method Details

id

public String id()

The channel's stable identifier, for the log.

Specified by:

id in interface CalendarSubscriptionChannel

Returns:

the identifier, never blank

userUidOf

public String userUidOf(String principal)

No uid: nobody is addressed.

Specified by:

userUidOf in interface CalendarSubscriptionChannel

Parameters:

principal - the principal

Returns:

null

subscriptionOf

public CalendarSubscription subscriptionOf(String href,
 String principal)

No subscription: the collection is what the DAV listing says.

Specified by:

subscriptionOf in interface CalendarSubscriptionChannel

Parameters:

href - the collection

principal - the account's principal

Returns:

null

asSubscriber

public <T> T asSubscriber(CalDavEndpoint endpoint,
 String userUid,
 Function<SubscriptionEdits,T> job)

Refuses: no session can be opened.

Specified by:

asSubscriber in interface CalendarSubscriptionChannel

Type Parameters:

T - what the job would produce

Parameters:

endpoint - the user's endpoint

userUid - the user's uid

job - the edits

Returns:

never

Throws:

UnsupportedOperationException - always

ownersOf

public CalendarOwners ownersOf(CalDavEndpoint endpoint)

Refuses: no listing can be read.

Specified by:

ownersOf in interface CalendarSubscriptionChannel

Parameters:

endpoint - the account's endpoint

Returns:

never

Throws:

UnsupportedOperationException - always