OSID - osid.billing.Customer Service Interface Definition

Interface	osid.billing.Customer
Implements	`osid.OsidObject`
Implements	`osid.Temporal`
Description	A `Customer` represents data associated to a resource representing a customer. Contact information for this object can be managed in the Contact OSID.
Method	getResourceId
Description	Gets the resource `Id` representing the customer.
Return	`osid.id.Id`		the resource `Id`
Compliance	`mandatory`		This method must be implemented.
Method	getResource
Description	Gets the resource.
Return	`osid.resource.Resource`		the resource
Errors	OPERATION_FAILED		unable to complete request
Compliance	`mandatory`		This method must be implemented.
Method	getCustomerNumber
Description	Gets the customer account number.
Return	`string`		the customer number
Compliance	`mandatory`		This method must be implemented.
Method	hasActivity
Description	Tests if this customer is linked to a financial activity,
Return	`boolean`		`true` if this customer has an activity, `false` otherwise
Compliance	`mandatory`		This method must be implemented.
Method	getActivityId
Description	Gets the activity `Id.`
Return	`osid.id.Id`		the activity `Id`
Errors	ILLEGAL_STATE		`hasActivity()` is `false`
Compliance	`mandatory`		This method must be implemented.
Method	getActivity
Description	Gets the activity.
Return	`osid.financials.Activity`		the activity
Errors	ILLEGAL_STATE		`hasActivity()` is `false`
Errors	OPERATION_FAILED		unable to complete request
Compliance	`mandatory`		This method must be implemented.
Method	getCustomerRecord
Description	Gets the customer record corresponding to the given `Customer` record `Type.` This method is used to retrieve an object implementing the requested record. The `customerRecordType` may be the `Type` returned in `getRecordTypes()` or any of its parents in a `Type` hierarchy where `hasRecordType(customerRecordType)` is `true` .
Parameters	`osid.type.Type`	`customerRecordType`	the type of customer record to retrieve
Return	`osid.billing.records.CustomerRecord`		the customer record
Errors	NULL_ARGUMENT		`customerRecordType` is `null`
	OPERATION_FAILED		unable to complete request
	UNSUPPORTED		`hasRecordType(customerRecordType)` is `false`
Compliance	`mandatory`		This method must be implemented.