public interface DemographicList extends OsidList
Like all OsidLists,
DemographicList
provides a means for accessing Demographic
elements
sequentially either one at a time or many at a time. Examples:
while (dl.hasNext()) { Demographic demographic = dl.getNextDemographic(); }or
while (dl.hasNext()) { Demographic[] demographics = dl.getNextDemographics(dl.available()); }
Modifier and Type | Method and Description |
---|---|
Demographic |
getNextDemographic()
Gets the next
Demographic in this list. |
Demographic[] |
getNextDemographics(long n)
Gets the next set of
Demographic elements in this list. |
Demographic getNextDemographic() throws OperationFailedException
Demographic
in this list. Demographic
in this list. The
hasNext()
method should be used to test that a next
Demographic
is available before calling this
method.IllegalStateException
- no more elements available in
this listOperationFailedException
- unable to complete requestmandatory
- This method must be implemented. Demographic[] getNextDemographics(long n) throws OperationFailedException
Demographic
elements in this list.
The specified amount must be less than or equal to the return from
available().
n
- the number of Demographic
elements requested
which must be less than or equal to available()
Demographic
elements.
The length of the array is less than or equal to the
number specified.IllegalStateException
- no more elements available in
this listOperationFailedException
- unable to complete requestmandatory
- This method must be implemented.