OSID - osid.course.program.CredentialList Service Interface Definition

Interface	osid.course.program.CredentialList
Implements	`osid.OsidList`
Used By	`osid.course.program.CredentialCourseCatalogSession`
	`osid.course.program.CredentialLookupSession`
	`osid.course.program.CredentialQuerySession`
	`osid.course.program.CredentialSearchResults`
	`osid.course.program.Program`
	`osid.course.program.ProgramOffering`
Description	Like all `OsidLists`, `CredentialList` provides a means for accessing `Credential` elements sequentially either one at a time or many at a time. Examples: while (cl.hasNext()) { Credential credential = cl.getNextCredential(); } or while (cl.hasNext()) { Credential[] credentials = cl.getNextCredentials(cl.available()); }
Method	getNextCredential
Description	Gets the next `Credential` in this list.
Return	`osid.course.program.Credential`		the next `Credential` in this list. The `hasNext()` method should be used to test that a next `Credential` is available before calling this method.
Errors	ILLEGAL_STATE		no more elements available in this list
Errors	OPERATION_FAILED		unable to complete request
Compliance	`mandatory`		This method must be implemented.
Method	getNextCredentials
Description	Gets the next set of `Credential` elements in this list. The specified amount must be less than or equal to the return from `available()`.
Parameters	`cardinal`	`n`	the number of `Credential` elements requested which must be less than or equal to `available()`
Return	`osid.course.program.Credential[]`		an array of `Credential` elements. The length of the array is less than or equal to the number specified.
Errors	ILLEGAL_STATE		no more elements available in this list
Errors	OPERATION_FAILED		unable to complete request
Compliance	`mandatory`		This method must be implemented.