lib/WikiDB/backend/dumb/BackLinkIter.php

   1 <?php // -*-php-*-
   2 // $Id$
   3
   4 require_once('lib/WikiDB/backend.php');
   5
   6 /**
   7  * This backlink iterator will work with any WikiDB_backend
   8  * which has a working get_links(,'links_from') method.
   9  *
  10  * This is mostly here for testing, 'cause it's slow,slow,slow.
  11  */
  12 class WikiDB_backend_dumb_BackLinkIter
  13 extends WikiDB_backend_iterator
  14 {
  15     function WikiDB_backend_dumb_BackLinkIter(&$backend, &$all_pages, $pagename) {
  16         $this->_pages = $all_pages;
  17         $this->_backend = &$backend;
  18         $this->_target = $pagename;
  19     }
  20
  21     function next() {
  22         while ($page = $this->_pages->next()) {
  23             $pagename = $page['pagename'];
  24             $links = $this->_backend->get_links($pagename, false);
  25             while ($link = $links->next()) {
  26                 if ($link['pagename'] == $this->_target) {
  27                     $links->free();
  28                     return $page;
  29                 }
  30             }
  31         }
  32     }
  33
  34     function free() {
  35         $this->_pages->free();
  36     }
  37 }
  38
  39 // Local Variables:
  40 // mode: php
  41 // tab-width: 8
  42 // c-basic-offset: 4
  43 // c-hanging-comment-ender-p: nil
  44 // indent-tabs-mode: nil
  45 // End:
  46
  47 ?>