OSID - osid.logging.LogEntryLogAssignmentSession Service Interface Definition

Interface	osid.logging.LogEntryLogAssignmentSession
Implements	`osid.OsidSession`
Used By	`osid.logging.LoggingManager`
Used By	`osid.logging.LoggingProxyManager`
Description	This session provides methods to re-assign log entries to `Logs`. A `LogEntry` may map to multiple `Log` objects and removing the last reference to a `LogEntry` is the equivalent of deleting it. Each `Log` may have its own authorizations governing who is allowed to operate on it. Moving or adding a reference of a `LogEntry` to another `Log` is not a copy operation (eg: does not change its `Id`).
Method	canAssignLogEntries
Description	Tests if this user can alter log entry/log 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 assignment operations to unauthorized users.
Return	`boolean`		`false` if mapping is not authorized, `true` otherwise
Compliance	`mandatory`		This method must be implemented.
Method	canAssignLogEntriesToLog
Description	Tests if this user can alter log entry/log 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 assignment operations to unauthorized users.
Parameters	`osid.id.Id`	`logId`	the `Id` of the `Log`
Return	`boolean`		`false` if mapping is not authorized, `true` otherwise
Errors	NULL_ARGUMENT		`logId` is `null`
Compliance	`mandatory`		This method must be implemented.
Method	getAssignableLogIds
Description	Gets a list of log including and under the given log node in which any log entry can be assigned.
Parameters	`osid.id.Id`	`logId`	the `Id` of the `Log`
Return	`osid.id.IdList`		list of assignable log `Ids`
Errors	NULL_ARGUMENT		`logId` is `null`
Errors	OPERATION_FAILED		unable to complete request
Compliance	`mandatory`		This method must be implemented.
Method	getAssignableLogIdsForLogEntry
Description	Gets a list of log including and under the given log node in which a specific log entry can be assigned.
Parameters	`osid.id.Id`	`logId`	the `Id` of the `Log`
Parameters	`osid.id.Id`	`logEntryId`	the `Id` of the `LogEntry`
Return	`osid.id.IdList`		list of assignable log `Ids`
Errors	NULL_ARGUMENT		`logId` or `logEntryId` is `null`
Errors	OPERATION_FAILED		unable to complete request
Compliance	`mandatory`		This method must be implemented.
Method	assignLogEntryToLog
Description	Adds an existing `LogEntry` to a `Log`.
Parameters	`osid.id.Id`	`logEntryId`	the `Id` of the `LogEntry`
Parameters	`osid.id.Id`	`logId`	the `Id` of the `Log`
Errors	ALREADY_EXISTS		`logEntryId` is already assigned to `logId`
	NOT_FOUND		`logEntryId` or `logId` not found
	NULL_ARGUMENT		`logEntryId` or `logId` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	unassignLogEntryFromLog
Description	Removes a `LogEntry` from a `Log`.
Parameters	`osid.id.Id`	`logEntryId`	the `Id` of the `LogEntry`
Parameters	`osid.id.Id`	`logId`	the `Id` of the `Log`
Errors	NOT_FOUND		`logEntryId` or `logId` not found or `logEntryId` not assigned to `logId`
	NULL_ARGUMENT		`logEntryId` or `logId` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	reassignLogEntryToLog
Description	Moves a `LogEntry` from one `Log` to another. Mappings to other `Logs` are unaffected.
Parameters	`osid.id.Id`	`logEntryId`	the `Id` of the `LogEntry`
	`osid.id.Id`	`fromLogId`	the `Id` of the current `Log`
	`osid.id.Id`	`toLogId`	the `Id` of the destination `Log`
Errors	ALREADY_EXISTS		`logEntryId` already assigned to `toLogId`
	NOT_FOUND		`logEntryId, fromLogId`, or `toLogId` not found or `logEntryId` not mapped to `fromLogId`
	NULL_ARGUMENT		`logEntryId, fromLogId`, or `toLogId` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.