Source for file HarmoniHierarchyIterator.class.php

<?php
 
require_once(OKI2."/osid/hierarchy/HierarchyIterator.php");
require_once(HARMONI."oki2/shared/HarmoniIterator.class.php");
 
/**
 * HierarchyIterator provides access to these objects sequentially, one at a
 * time.  The purpose of all Iterators is to to offer a way for OSID methods
 * to return multiple values of a common type and not use an array.     Returning
 * an array may not be appropriate if the number of values returned is large
 * or is fetched remotely.    Iterators do not allow access to values by index,
 * rather you must access values in sequence. Similarly, there is no way to go
 * backwards through the sequence unless you place the values in a data
 * structure, such as an array, that allows for access by index.
 * 
 * <p>
 * OSID Version: 2.0
 * </p>
 *
 * @package harmoni.osid_v2.hierarchy
 * 
 * @copyright Copyright &copy; 2005, Middlebury College
 * @license http://www.gnu.org/copyleft/gpl.html GNU General Public License (GPL)
 *
 * @version $Id: HarmoniHierarchyIterator.class.php,v 1.8 2007/09/04 20:25:41 adamfranco Exp $
 */
class HarmoniHierarchyIterator
    extends HarmoniIterator
//    implements HierarchyIterator
 
{
 
    /**
     * Return true if there is an additional  Hierarchy ; false otherwise.
     *    
     * @return boolean 
     * 
     * @throws object HierarchyException An exception with one of
     *            the following messages defined in
     *            org.osid.hierarchy.HierarchyException may be thrown:     {@link }
     *            org.osid.hierarchy.HierarchyException#OPERATION_FAILED
     *            OPERATION_FAILED}, {@link }
     *            org.osid.hierarchy.HierarchyException#PERMISSION_DENIED
     *            PERMISSION_DENIED}, {@link }
     *            org.osid.hierarchy.HierarchyException#CONFIGURATION_ERROR
     *            CONFIGURATION_ERROR}, {@link }
     *            org.osid.hierarchy.HierarchyException#UNIMPLEMENTED
     *            UNIMPLEMENTED}
     * 
     * @access public
     */
    function hasNextHierarchy () { 
        return $this->hasNext();
    } 
 
    /**
     * Return the next Hierarchy.
     *    
     * @return object Hierarchy 
     * 
     * @throws object HierarchyException An exception with one of
     *            the following messages defined in
     *            org.osid.hierarchy.HierarchyException may be thrown:     {@link }
     *            org.osid.hierarchy.HierarchyException#OPERATION_FAILED
     *            OPERATION_FAILED}, {@link }
     *            org.osid.hierarchy.HierarchyException#PERMISSION_DENIED
     *            PERMISSION_DENIED}, {@link }
     *            org.osid.hierarchy.HierarchyException#CONFIGURATION_ERROR
     *            CONFIGURATION_ERROR}, {@link }
     *            org.osid.hierarchy.HierarchyException#UNIMPLEMENTED
     *            UNIMPLEMENTED}, {@link }
     *            org.osid.hierarchy.HierarchyException#NO_MORE_ITERATOR_ELEMENTS
     *            NO_MORE_ITERATOR_ELEMENTS}
     * 
     * @access public
     */
    function nextHierarchy () { 
        return $this->next();
    } 
}
 
?>