Source for file HarmoniQualifierIterator.class.php

<?php 
 
require_once(OKI2."/osid/authorization/QualifierIterator.php");
require_once(HARMONI."oki2/shared/HarmoniIterator.class.php");
 
/**
 * QualifierIterator is the iterator for a collection of Qualifiers.
 * 
 * <p>
 * OSID Version: 2.0
 * </p>
 *
 * @package harmoni.osid_v2.authorization
 * 
 * @copyright Copyright &copy; 2005, Middlebury College
 * @license http://www.gnu.org/copyleft/gpl.html GNU General Public License (GPL)
 *
 * @version $Id: HarmoniQualifierIterator.class.php,v 1.8 2007/09/04 20:25:38 adamfranco Exp $
 */
class HarmoniQualifierIterator
    extends HarmoniIterator
//    implements QualifierIterator
 
{
    /**
     * Return true if there is an additional  Qualifier ; false otherwise.
     *    
     * @return boolean 
     * 
     * @throws object AuthorizationException An exception with
     *            one of the following messages defined in
     *            org.osid.authorization.AuthorizationException may be thrown:
     *            {@link }
     *            org.osid.authorization.AuthorizationException#OPERATION_FAILED
     *            OPERATION_FAILED}, {@link }
     *            org.osid.authorization.AuthorizationException#PERMISSION_DENIED
     *            PERMISSION_DENIED}, {@link }
     *            org.osid.authorization.AuthorizationException#CONFIGURATION_ERROR
     *            CONFIGURATION_ERROR}, {@link }
     *            org.osid.authorization.AuthorizationException#UNIMPLEMENTED
     *            UNIMPLEMENTED}
     * 
     * @access public
     */
    function hasNextQualifier () { 
        return $this->hasNext();
    } 
 
    /**
     * Return the next Qualifier.
     *    
     * @return object Qualifier 
     * 
     * @throws object AuthorizationException An exception with
     *            one of the following messages defined in
     *            org.osid.authorization.AuthorizationException may be thrown:
     *            {@link }
     *            org.osid.authorization.AuthorizationException#OPERATION_FAILED
     *            OPERATION_FAILED}, {@link }
     *            org.osid.authorization.AuthorizationException#PERMISSION_DENIED
     *            PERMISSION_DENIED}, {@link }
     *            org.osid.authorization.AuthorizationException#CONFIGURATION_ERROR
     *            CONFIGURATION_ERROR}, {@link }
     *            org.osid.authorization.AuthorizationException#UNIMPLEMENTED
     *            UNIMPLEMENTED}
     * 
     * @access public
     */
    function nextQualifier () { 
        return $this->next();
    }
    
    /**
     * Return the next Qualifier.
     *    
     * @return object Qualifier 
     * 
     * @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 next () {
        // If this is the first element access, inform our AZ cache that we are 
        // working with this set of nodes so that it can fetch AZs for all of 
        // them at once.
        if ($this->_i == -1) {
            $isAuthorizedCache = IsAuthorizedCache::instance();
            $isAuthorizedCache->queueAssetArray($this->_elements);
        }
        
        return parent::next();
    } 
}
 
?>