function hosting_update_6015 in Hosting 6.2

Same name and namespace in other branches

1. 7.4 hosting.install \hosting_update_6015()
2. 7.3 hosting.install \hosting_update_6015()

Delete URL aliases for sites that have been deleted.

Ideally we'd do this in a single DB query, but there isn't a nice performant way to do it, so we do more DB queries instead of using potentially a lot of memory. Basically this may take a long time to run, but it shouldn't run out of resources doing so.

File

./hosting.install, line 375

Install, update and uninstall for the hosting module.

Code

function hosting_update_6015(&$sandbox) {
  $ret = array();
  if (!isset($sandbox['progress'])) {
    $sandbox['progress'] = 0;
    $sandbox['current_pid'] = 0;
    $sandbox['max'] = db_result(db_query('SELECT COUNT(pid) FROM {url_alias} WHERE dst LIKE "hosting/c/%" AND pid > 0'));
  }
  $aliases = db_query_range("SELECT pid, src, dst FROM {url_alias} WHERE dst LIKE 'hosting/c/%' AND pid > %d ORDER BY pid ASC", $sandbox['current_pid'], 0, 50);
  while ($alias = db_fetch_object($aliases)) {

    // Get the node ID for the alias.
    $nid = preg_replace('#^node/#', '', $alias->src);
    if (is_numeric($nid)) {

      // Check to see if the corresponding context has been deleted.
      if (!db_result(db_query('SELECT COUNT(nid) FROM {hosting_context} WHERE nid = %d', $nid))) {
        db_query('DELETE FROM {url_alias} WHERE pid = %d', $alias->pid);
      }
    }
    $sandbox['progress']++;
    $sandbox['current_pid'] = $alias->pid;
  }
  $ret['#finished'] = empty($sandbox['max']) ? 1 : $sandbox['progress'] / $sandbox['max'];
  return $ret;
}