includes/user/UserArrayFromResult.php

   1 <?php
   2 /**
   3  * Class to walk into a list of User objects.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  */
  22
  23 use Wikimedia\Rdbms\IResultWrapper;
  24
  25 class UserArrayFromResult extends UserArray implements Countable {
  26         /** @var IResultWrapper */
  27         public $res;
  28
  29         /** @var int */
  30         public $key;
  31
  32         /** @var bool|User */
  33         public $current;
  34
  35         /**
  36          * @param IResultWrapper $res
  37          */
  38         function __construct( $res ) {
  39                 $this->res = $res;
  40                 $this->key = 0;
  41                 $this->setCurrent( $this->res->current() );
  42         }
  43
  44         /**
  45          * @param bool|stdClass $row
  46          * @return void
  47          */
  48         protected function setCurrent( $row ) {
  49                 if ( $row === false ) {
  50                         $this->current = false;
  51                 } else {
  52                         $this->current = User::newFromRow( $row );
  53                 }
  54         }
  55
  56         /**
  57          * @return int
  58          */
  59         public function count() {
  60                 return $this->res->numRows();
  61         }
  62
  63         /**
  64          * @return User
  65          */
  66         function current() {
  67                 return $this->current;
  68         }
  69
  70         function key() {
  71                 return $this->key;
  72         }
  73
  74         function next() {
  75                 $row = $this->res->next();
  76                 $this->setCurrent( $row );
  77                 $this->key++;
  78         }
  79
  80         function rewind() {
  81                 $this->res->rewind();
  82                 $this->key = 0;
  83                 $this->setCurrent( $this->res->current() );
  84         }
  85
  86         /**
  87          * @return bool
  88          */
  89         function valid() {
  90                 return $this->current !== false;
  91         }
  92 }