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| 1 | <?php |
| 2 | |
| 3 | namespace MediaWiki\Extension\MathSearch\StackExchange; |
| 4 | |
| 5 | use MediaWiki\MediaWikiServices; |
| 6 | use Wikibase\DataModel\Entity\Item; |
| 7 | use Wikibase\Repo\WikibaseRepo; |
| 8 | |
| 9 | class IdMap { |
| 10 | |
| 11 | /** @var \Wikimedia\Rdbms\IDatabase */ |
| 12 | private $dbw; |
| 13 | /** @var Item */ |
| 14 | private $item; |
| 15 | /** @var \Wikibase\Lib\Store\EntityStore */ |
| 16 | private $store; |
| 17 | /** |
| 18 | * @var \HashBagOStuff |
| 19 | */ |
| 20 | private $cache; |
| 21 | /** @var self|null */ |
| 22 | private static $instance; |
| 23 | |
| 24 | private function __construct() { |
| 25 | $this->dbw = MediaWikiServices::getInstance() |
| 26 | ->getConnectionProvider() |
| 27 | ->getPrimaryDatabase(); |
| 28 | |
| 29 | $this->item = new Item(); |
| 30 | $this->store = WikibaseRepo::getEntityStore(); |
| 31 | // don't store too many keys |
| 32 | $this->cache = new \HashBagOStuff( [ 'maxKeys' => 10000 ] ); |
| 33 | } |
| 34 | |
| 35 | /** |
| 36 | * @return IdMap |
| 37 | */ |
| 38 | public static function getInstance() { |
| 39 | if ( !self::$instance ) { |
| 40 | self::$instance = new IdMap(); |
| 41 | } |
| 42 | |
| 43 | return self::$instance; |
| 44 | } |
| 45 | |
| 46 | private function getNewQid() { |
| 47 | $this->item->setId( null ); |
| 48 | $this->store->assignFreshId( $this->item ); |
| 49 | |
| 50 | return $this->item->getId(); |
| 51 | } |
| 52 | |
| 53 | public function addQid( int $extId, int $extIdType ) { |
| 54 | $cacheKey = "$extIdType.$extId"; |
| 55 | if ( $this->cache->hasKey( $cacheKey ) ) { |
| 56 | return $this->cache->get( $cacheKey ); |
| 57 | } |
| 58 | $fields = [ |
| 59 | 'math_external_id' => $extId, |
| 60 | 'math_external_id_type' => $extIdType, |
| 61 | ]; |
| 62 | |
| 63 | $qid = $this->dbw->selectField( 'math_wbs_entity_map', 'math_local_qid', $fields ); |
| 64 | if ( !$qid ) { |
| 65 | $qid = $this->getNewQid()->getNumericId(); |
| 66 | $fields['math_local_qid'] = $qid; |
| 67 | $this->dbw->insert( 'math_wbs_entity_map', $fields ); |
| 68 | } |
| 69 | $this->cache->set( $cacheKey, $qid ); |
| 70 | |
| 71 | return $qid; |
| 72 | } |
| 73 | |
| 74 | public function addWikiText( int $qid, $parent, int $type, string $text ) { |
| 75 | $cond = [ |
| 76 | 'math_local_qid' => $qid, |
| 77 | ]; |
| 78 | $table = 'math_wbs_text_store'; |
| 79 | $entryExists = $this->dbw->selectRowCount( $table, 'math_local_qid', $cond ); |
| 80 | |
| 81 | $fields = [ |
| 82 | 'math_local_qid' => $qid, |
| 83 | 'math_reply_to' => $parent, |
| 84 | 'math_post_type' => $type, |
| 85 | 'math_body' => $text, |
| 86 | ]; |
| 87 | |
| 88 | if ( $entryExists ) { |
| 89 | $this->dbw->update( $table, $fields, $cond ); |
| 90 | } else { |
| 91 | $this->dbw->insert( $table, $fields ); |
| 92 | } |
| 93 | } |
| 94 | } |