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| 1 | <?php |
| 2 | /** |
| 3 | * Class to walk into a list of Title objects. |
| 4 | * |
| 5 | * Note: this entire file is a byte-for-byte copy of UserArrayFromResult.php |
| 6 | * with s/User/Title/. If anyone can figure out how to do this nicely |
| 7 | * with inheritance or something, please do so. |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify |
| 10 | * it under the terms of the GNU General Public License as published by |
| 11 | * the Free Software Foundation; either version 2 of the License, or |
| 12 | * (at your option) any later version. |
| 13 | * |
| 14 | * This program is distributed in the hope that it will be useful, |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | * GNU General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU General Public License along |
| 20 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 21 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 22 | * http://www.gnu.org/copyleft/gpl.html |
| 23 | * |
| 24 | * @file |
| 25 | */ |
| 26 | |
| 27 | namespace MediaWiki\Title; |
| 28 | |
| 29 | use Countable; |
| 30 | use Iterator; |
| 31 | use Wikimedia\Rdbms\IResultWrapper; |
| 32 | |
| 33 | /** |
| 34 | * @newable |
| 35 | * @note marked as newable in 1.35 for lack of a better alternative, |
| 36 | * but should probably become part of the TitleFactory service. |
| 37 | */ |
| 38 | class TitleArrayFromResult implements Countable, Iterator { |
| 39 | /** @var IResultWrapper */ |
| 40 | public $res; |
| 41 | |
| 42 | /** @var int */ |
| 43 | public $key; |
| 44 | |
| 45 | /** @var Title|false */ |
| 46 | public $current; |
| 47 | |
| 48 | /** |
| 49 | * @stable to call |
| 50 | * |
| 51 | * @param IResultWrapper $res |
| 52 | */ |
| 53 | public function __construct( $res ) { |
| 54 | $this->res = $res; |
| 55 | $this->key = 0; |
| 56 | $this->setCurrent( $this->res->current() ); |
| 57 | } |
| 58 | |
| 59 | /** |
| 60 | * @param \stdClass|false $row |
| 61 | * @return void |
| 62 | */ |
| 63 | protected function setCurrent( $row ) { |
| 64 | if ( $row === false ) { |
| 65 | $this->current = false; |
| 66 | } else { |
| 67 | $this->current = Title::newFromRow( $row ); |
| 68 | } |
| 69 | } |
| 70 | |
| 71 | /** |
| 72 | * @return int |
| 73 | */ |
| 74 | public function count(): int { |
| 75 | return $this->res->numRows(); |
| 76 | } |
| 77 | |
| 78 | public function current(): Title { |
| 79 | return $this->current; |
| 80 | } |
| 81 | |
| 82 | public function key(): int { |
| 83 | return $this->key; |
| 84 | } |
| 85 | |
| 86 | public function next(): void { |
| 87 | $row = $this->res->fetchObject(); |
| 88 | $this->setCurrent( $row ); |
| 89 | $this->key++; |
| 90 | } |
| 91 | |
| 92 | public function rewind(): void { |
| 93 | $this->res->rewind(); |
| 94 | $this->key = 0; |
| 95 | $this->setCurrent( $this->res->current() ); |
| 96 | } |
| 97 | |
| 98 | /** |
| 99 | * @return bool |
| 100 | */ |
| 101 | public function valid(): bool { |
| 102 | return $this->current !== false; |
| 103 | } |
| 104 | } |
| 105 | |
| 106 | /** @deprecated class alias since 1.41 */ |
| 107 | class_alias( TitleArrayFromResult::class, 'TitleArrayFromResult' ); |