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   1  <?php
   2  //--------------------------------------------------------------------------------
   3  // Copyright 2003 Procata, Inc.
   4  // Released under the LGPL license (http://www.gnu.org/copyleft/lesser.html)
   5  //--------------------------------------------------------------------------------
   6  /**
   7  * @package WACT_UTIL
   8  * @version $Id: emptydataset.inc.php,v 1.6 2004/06/15 03:03:50 jeffmoore Exp $
   9  */
  10  //--------------------------------------------------------------------------------
  11  /**
  12  * A null implementation of the DataSpace and Iterator
  13  * @see http://wact.sourceforge.net/index.php/EmptyDataSet
  14  * @access public
  15  * @package WACT_UTIL
  16  */
  17  class EmptyDataSet /* implements DataSource, Iterator */ {
  18  
  19      //--------------------------------------------------------------------------------
  20      // Iterator implementation
  21      /**
  22      * Iterator Method
  23      * @return void
  24      * @access public
  25      */
  26  	function reset() {
  27      }
  28      /**
  29      * Iterator Method
  30      * @return boolean FALSE
  31      * @access public
  32      */
  33  	function next() {
  34          return FALSE;
  35      }
  36      
  37      //--------------------------------------------------------------------------------
  38      // DataSource implementation
  39  
  40      function get($name) {
  41      }
  42  
  43      function set($name, $value) {
  44      }
  45      
  46      function remove($name) {
  47      }
  48      
  49      function removeAll() {
  50      }
  51  
  52      function import($property_list) {
  53      }
  54  
  55      function merge($property_list) {
  56      }
  57      
  58      function &export() {
  59          return array();
  60      }
  61  
  62      function isDataSource() {
  63          return TRUE;
  64      }
  65  
  66  	function registerFilter(&$filter) {
  67      }
  68  
  69  	function prepare() {
  70      }
  71  }
  72  ?>