OSID - osid.lexicon.TextPressAssignmentSession Service Interface Definition

Interface	osid.lexicon.TextPressAssignmentSession
Implements	`osid.OsidSession`
Used By	`osid.lexicon.LexiconManager`
Used By	`osid.lexicon.LexiconProxyManager`
Description	This session provides methods to re-assign `Texts` to `Press` mappings. A `Text` may appear in multiple `Press` objects and removing the last reference to a `Text` is the equivalent of deleting it. Each `Press` may have its own authorizations governing who is allowed to operate on it. Adding a reference of a `Text` to another `Press` is not a copy operation (eg: does not change its `Id`).
Method	canAssignTexts
Description	Tests if this user can alter text/press 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 press that may opt not to offer assignment operations to unauthorized users.
Return	`boolean`		`false` if lexicon is not authorized, `true` otherwise
Compliance	`mandatory`		This method must be implemented.
Method	canAssignTextsToPress
Description	Tests if this user can alter text/press 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 press that may opt not to offer assignment operations to unauthorized users.
Parameters	`osid.id.Id`	`pressId`	the `Id` of the `Press`
Return	`boolean`		`false` if lexicon is not authorized, `true` otherwise
Errors	NULL_ARGUMENT		`pressId` is `null`
Compliance	`mandatory`		This method must be implemented.
Method	getAssignablePressIds
Description	Gets a list of presses including and under the given press node in which any text can be assigned.
Parameters	`osid.id.Id`	`pressId`	the `Id` of the `Press`
Return	`osid.id.IdList`		list of assignable press `Ids`
Errors	NULL_ARGUMENT		`pressId` is `null`
Errors	OPERATION_FAILED		unable to complete request
Compliance	`mandatory`		This method must be implemented.
Method	getAssignablePressIdsForText
Description	Gets a list of presses including and under the given press node in which a specific text can be assigned.
Parameters	`osid.id.Id`	`pressId`	the `Id` of the `Press`
Parameters	`osid.id.Id`	`textId`	the `Id` of the `Text`
Return	`osid.id.IdList`		list of assignable press `Ids`
Errors	NULL_ARGUMENT		`pressId` or `textId` is `null`
Errors	OPERATION_FAILED		unable to complete request
Compliance	`mandatory`		This method must be implemented.
Method	assignTextToPress
Description	Adds an existing `Text` to a `Press`.
Parameters	`osid.id.Id`	`textId`	the `Id` of the `Text`
Parameters	`osid.id.Id`	`pressId`	the `Id` of the `Press`
Errors	ALREADY_EXISTS		`textId` is slready assigned to `pressId`
	NOT_FOUND		`textId` or `pressId` not found
	NULL_ARGUMENT		`textId` or `pressId` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	unassignTextFromPress
Description	Removes a `Text` from a `Press`.
Parameters	`osid.id.Id`	`textId`	the `Id` of the `Text`
Parameters	`osid.id.Id`	`pressId`	the `Id` of the `Press`
Errors	NOT_FOUND		`textId` or `pressId` not found or `textId` not assigned to `pressId`
	NULL_ARGUMENT		`textId` or `pressId` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	reassignTextToPress
Description	Moves a `Text` from one `Press` to another. Mappings to other `Presses` are unaffected.
Parameters	`osid.id.Id`	`textId`	the `Id` of the `Text`
	`osid.id.Id`	`fromPressId`	the `Id` of the current `Press`
	`osid.id.Id`	`toPressId`	the `Id` of the destination `Press`
Errors	NOT_FOUND		`textId, fromPressId`, or `toPressId` not found or `textId` not mapped to `fromPressId`
	NULL_ARGUMENT		`textId, fromPressId`, or `toPressId` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.