OSID - osid.subscription.rules.SubscriptionEnablerPublisherAssignmentSession Service Interface Definition

Interface	osid.subscription.rules.SubscriptionEnablerPublisherAssignmentSession
Implements	`osid.OsidSession`
Used By	`osid.subscription.rules.SubscriptionRulesManager`
Used By	`osid.subscription.rules.SubscriptionRulesProxyManager`
Description	This session provides methods to re-assign `SubscriptionEnabler` to `Publisher` mappings. A `SubscriptionEnabler` may appear in multiple `Publisher` objects and removing the last reference to a `SubscriptionEnabler` is the equivalent of deleting it. Each `Subscription` may have its own authorizations governing who is allowed to operate on it. Adding a reference of a `SubscriptionEnabler` to another `Publisher` is not a copy operation (eg: does not change its `Id` ).
Method	canAssignSubscriptionEnablers
Description	Tests if this user can alter subscription enabler/publisher mappings. A return of true does not guarantee successful authorization. A return of false indicates that it is known mapping methods in this session will result in a `PERMISSION_DENIED` . This is intended as a hint to an application that may opt not to offer lookup operations to unauthorized users.
Return	`boolean`		`false` if mapping is not authorized, `true` otherwise
Compliance	`mandatory`		This method must be implemented.
Method	canAssignSubscriptionEnablersToPublisher
Description	Tests if this user can alter subscription enabler/publisher mappings. A return of true does not guarantee successful authorization. A return of false indicates that it is known mapping methods in this session will result in a `PERMISSION_DENIED` . This is intended as a hint to an application that may opt not to offer lookup operations to unauthorized users.
Parameters	`osid.id.Id`	`publisherId`	the `Id` of the `Publisher`
Return	`boolean`		`false` if mapping is not authorized, `true` otherwise
Errors	NULL_ARGUMENT		`publisherId` is `null`
Compliance	`mandatory`		This method must be implemented.
Method	getAssignablePublisherIds
Description	Gets a list of publishers including and under the given publisher node in which any publisher enabler can be assigned.
Parameters	`osid.id.Id`	`publisherId`	the `Id` of the `Publisher`
Return	`osid.id.IdList`		list of assignable subscription `Ids`
Errors	NULL_ARGUMENT		`publisherId` is `null`
Errors	OPERATION_FAILED		unable to complete request
Compliance	`mandatory`		This method must be implemented.
Method	getAssignablePublisherIdsForSubscriptionEnabler
Description	Gets a list of publishers including and under the given publisher node in which a specific publisher enabler can be assigned.
Parameters	`osid.id.Id`	`publisherId`	the `Id` of the `Publisher`
Parameters	`osid.id.Id`	`subscriptionEnablerId`	the `Id` of the `SubscriptionEnabler`
Return	`osid.id.IdList`		list of assignable publisher `Ids`
Errors	NULL_ARGUMENT		`publisherId` or `subscriptionEnablerId` is `null`
Errors	OPERATION_FAILED		unable to complete request
Compliance	`mandatory`		This method must be implemented.
Method	assignSubscriptionEnablerToPublisher
Description	Adds an existing `SubscriptionEnabler` to a `Publisher` .
Parameters	`osid.id.Id`	`subscriptionEnablerId`	the `Id` of the `SubscriptionEnabler`
Parameters	`osid.id.Id`	`publisherId`	the `Id` of the `Publisher`
Errors	ALREADY_EXISTS		`subscriptionEnablerId` is already assigned to `publisherId`
	NOT_FOUND		`subscriptionEnablerId` or `publisherId` not found
	NULL_ARGUMENT		`subscriptionEnablerId` or `publisherId` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	unassignSubscriptionEnablerFromPublisher
Description	Removes a `SubscriptionEnabler` from a `Publisher` .
Parameters	`osid.id.Id`	`subscriptionEnablerId`	the `Id` of the `SubscriptionEnabler`
Parameters	`osid.id.Id`	`publisherId`	the `Id` of the `Publisher`
Errors	NOT_FOUND		`subscriptionEnablerId` or `publisherId` not found or `subscriptionEnablerId` not assigned to `publisherId`
	NULL_ARGUMENT		`subscriptionEnablerId` or `publisherId` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	reassignSubscriptionEnablerToPublisher
Description	Moves a `SubscriptionEnabler` from one `Publisher` to another. Mappings to other `Publishers` are unaffected.
Parameters	`osid.id.Id`	`subscriptionEnablerId`	the `Id` of the `SubscriptionEnabler`
	`osid.id.Id`	`fromPublisherId`	the `Id` of the current `Publisher`
	`osid.id.Id`	`toPublisherId`	the `Id` of the destination `Publisher`
Errors	ALREADY_EXISTS		`subscriptionEnablerId` already assigned to `toPublisherId`
	NOT_FOUND		`subscriptionEnablerId, fromPublisherId` , or `toPublisherId` not found or `subscriptionEnablerId` not mapped to `fromPublisherId`
	NULL_ARGUMENT		`subscriptionEnablerId, fromPublisherId` , or `toPublisherId` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.