OSID - osid.financials.AccountBusinessAssignmentSession Service Interface Definition

Interface	osid.financials.AccountBusinessAssignmentSession
Implements	`osid.OsidSession`
Used By	`osid.financials.FinancialsManager`
Used By	`osid.financials.FinancialsProxyManager`
Description	This session provides methods to re-assign `Accounts` to `Businesses`. An `Account` may appear in multiple `Businesses` and removing the last reference to an `Account` is the equivalent of deleting it. Each `Business` may have its own authorizations governing who is allowed to operate on it. Adding a reference of an `Account` to another `Business` is not a copy operation (eg: does not change its `Id`).
Method	canAssignAccounts
Description	Tests if this user can alter account/business 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	canAssignAccountToBusiness
Description	Tests if this user can alter account/business 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`	`businessId`	the `Id` of the `Business`
Return	`boolean`		`false` if mapping is not authorized, `true` otherwise
Errors	NULL_ARGUMENT		`businessId` is `null`
Compliance	`mandatory`		This method must be implemented.
Method	getAssignableBusinessIds
Description	Gets a list of businesses including and under the given business node in which any account can be assigned.
Parameters	`osid.id.Id`	`businessId`	the `Id` of the `Business`
Return	`osid.id.IdList`		list of assignable business `Ids`
Errors	NULL_ARGUMENT		`businessId` is `null`
Errors	OPERATION_FAILED		unable to complete request
Compliance	`mandatory`		This method must be implemented.
Method	getAssignableBusinessIdsForAccount
Description	Gets a list of businesses including and under the given business node in which a specific account can be assigned.
Parameters	`osid.id.Id`	`businessId`	the `Id` of the `Business`
Parameters	`osid.id.Id`	`accountId`	the `Id` of the `Account`
Return	`osid.id.IdList`		list of assignable business `Ids`
Errors	NULL_ARGUMENT		`businessId` or `accountId` is `null`
Errors	OPERATION_FAILED		unable to complete request
Compliance	`mandatory`		This method must be implemented.
Method	assignAccountToBusiness
Description	Adds an existing `Account` to a `Business`.
Parameters	`osid.id.Id`	`accountId`	the `Id` of the `Account`
Parameters	`osid.id.Id`	`businessId`	the `Id` of the `Business`
Errors	ALREADY_EXISTS		`accountId` is already assigned to `businessId`
	NOT_FOUND		`accountId` or `businessId` not found
	NULL_ARGUMENT		`accountId` or `businessId` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	unassignAccountFromBusiness
Description	Removes an `Account` from a `Business`.
Parameters	`osid.id.Id`	`accountId`	the `Id` of the `Account`
Parameters	`osid.id.Id`	`businessId`	the `Id` of the `Business`
Errors	NOT_FOUND		`accountId` or `businessId` not found or `accountId` not assigned to `businessId`
	NULL_ARGUMENT		`accountId` or `businessId` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.