includes/UserArray.php

   1 <?php
   2
   3 abstract class UserArray implements Iterator {
   4         static function newFromResult( $res ) {
   5                 $userArray = null;
   6                 if ( !wfRunHooks( 'UserArrayFromResult', array( &$userArray, $res ) ) ) {
   7                         return null;
   8                 }
   9                 if ( $userArray === null ) {
  10                         $userArray = self::newFromResult_internal( $res );
  11                 }
  12                 return $userArray;
  13         }
  14
  15         static function newFromIDs( $ids ) {
  16                 $ids = array_map( 'intval', (array)$ids ); // paranoia
  17                 if ( !$ids )
  18                         // Database::select() doesn't like empty arrays
  19                         return new ArrayIterator(array());
  20                 $dbr = wfGetDB( DB_SLAVE );
  21                 $res = $dbr->select( 'user', '*', array( 'user_id' => $ids ),
  22                         __METHOD__ );
  23                 return self::newFromResult( $res );
  24         }
  25
  26         protected static function newFromResult_internal( $res ) {
  27                 $userArray = new UserArrayFromResult( $res );
  28                 return $userArray;
  29         }
  30 }
  31
  32 class UserArrayFromResult extends UserArray {
  33         var $res;
  34         var $key, $current;
  35
  36         function __construct( $res ) {
  37                 $this->res = $res;
  38                 $this->key = 0;
  39                 $this->setCurrent( $this->res->current() );
  40         }
  41
  42         protected function setCurrent( $row ) {
  43                 if ( $row === false ) {
  44                         $this->current = false;
  45                 } else {
  46                         $this->current = User::newFromRow( $row );
  47                 }
  48         }
  49
  50         public function count() {
  51                 return $this->res->numRows();
  52         }
  53
  54         function current() {
  55                 return $this->current;
  56         }
  57
  58         function key() {
  59                 return $this->key;
  60         }
  61
  62         function next() {
  63                 $row = $this->res->next();
  64                 $this->setCurrent( $row );
  65                 $this->key++;
  66         }
  67
  68         function rewind() {
  69                 $this->res->rewind();
  70                 $this->key = 0;
  71                 $this->setCurrent( $this->res->current() );
  72         }
  73
  74         function valid() {
  75                 return $this->current !== false;
  76         }
  77 }