Interface HierarchyList

All Superinterfaces:

AutoCloseable, Closeable, OsidList, OsidList

public interface HierarchyList
extends OsidList

Like all OsidLists , HierarchyList provides a means for accessing Id elements sequentially either one at a time or many at a time. Examples:

while (hl.hasNext()) {
     Hierarchy hierarchy = hl.getNextHierarchy();
}            
  

or

while (hl.hasNext()) {
     Hierarchy[] hierarchies = hl.getNextHierarchies(hl.available());
}            
  

Method Summary

Modifier and Type	Method	Description
Hierarchy[]	getNextHierarchies(long n)	Gets the next set of Hierarchy objects in this list.
Hierarchy	getNextHierarchy()	Gets the next Hierarchy in this list.

Methods inherited from interface Closeable

close

Methods inherited from interface OsidList

close

Modifier and Type	Method	Description
void	close()	Close this list.

Methods inherited from interface OsidList

available, hasNext, skip

Modifier and Type	Method	Description
long	available()	Gets the number of elements available for retrieval.
boolean	hasNext()	Tests if there are more elements in this list.
void	skip(long n)	Skip the specified number of elements in the list.

Method Details

getNextHierarchy

Hierarchy getNextHierarchy()
                    throws OperationFailedException

Gets the next Hierarchy in this list.

Returns:

the next Hierarchy in this list. The hasNext() method should be used to test that a next Hierarchy is available before calling this method.

Throws:

IllegalStateException - no more elements available in this list

OperationFailedException - unable to complete request

Compliance:

mandatory - This method must be implemented.

getNextHierarchies

Hierarchy[] getNextHierarchies(long n)
                        throws OperationFailedException

Gets the next set of Hierarchy objects in this list. The specified amount must be less than or equal to the return from available() .

Parameters:

n - the number of Hierarchy elements requested which must be less than or equal to available()

Returns:

an array of Hierarchy elements. The length of the array is less than or equal to the number specified.

Throws:

IllegalStateException - no more elements available in this list

OperationFailedException - unable to complete request

Compliance:

mandatory - This method must be implemented.